bluuebunny/crossref_metadata_2025 huggingface dataset:
Roches et minéraux du collectionneur : d'Ottawa à North Bay et Huntsville (Ontario); de Gatineau (Hull) à Waltham et Témiscaming (Québec)
Authors: Sabina A P
Published: November 2010

Occurrences of minerals, rocks, and fossils are described from about 200 easily accessible localities on either side of the Ottawa River from Ottawa - Gatineau (Hull) to North Bay. They are reached by following Highway 17 in Ontario and Highway 148 in Quebec.
Most of the collecting localities are in Renfrew County, Ontario. A wide variety of minerals are found in this area, and some localities are known for the museum-type specimens collected from them. The earliest mines were the apatite and iron mines that were operated in the 1880s. Other deposits
were subsequently worked for corundum, molybdenite, zinc, celestine, garnet, pyrite, beryl, marble, limestone, feldspar, rare-element minerals, and dolomite. Numerous former feldspar mines as well as deposits of kyanite, garnet, muscovite, niobium, and brucite occur in the Nipissing District. Some
of these deposits are accessible only by boat. The region north of the Ottawa River between Gatineau (Hull) and Waltham was formerly mined for iron, mica, feldspar, apatite, uranium, molybdenum, lead-zinc, and limestone. A dolomite deposit is currently (2005) being operated. Occurrences of brucite,
pyroaurite, szaibelyite, cordierite, scapolite, and asbestos are also known. Farther west, in the Témiscaming - Kipawa area, a wide variety of minerals include garnet, kyanite, and amazonite, and the rare-mineral suite of the Kipawa complex. In recent years, the Témiscaming area has been
the scene of exploration for diamonds, and some diamonds have been reported from a location south of Lake Beauchêne. Minerals and/or rocks that could be used for lapidary purposes include feldspar (peristerite, sunstone), rose quartz, graphic granite, and corundum from Renfrew County; feldspar
(peristerite, amazonite), jaspilite, and graphic granite from the North Bay area; peristerite and cordierite from the Quebec side of the Ottawa River. Ordovician fossils may be collected from numerous roadcuts, rock outcrops, and quarries in the Ottawa - Pembroke and Aylmer
areas.
A comparison of automatic and supervised methods for extracting lithological end members from hyperspectral data: application to lithological mapping in southern Baffin Island, Nunavut
Authors: Harris J R , Ponomarev P , Shang S , Budkewitsch P , Rogge D
Published: November 2010

This paper compares two automatic methods (unsupervised classification and an end-member extraction algorithm) and a supervised method (ground collection of training areas followed by matched filter classification) for producing a spectral map over a small area
in eastern Baffin Island in the Canadian Arctic. The spectral maps and automatically generated spectra used to produce the spectral maps are compared to the spectral map and spectra produced using the supervised approach.

Both the supervised and unsupervised methods discussed in this paper provide spectralmaps that provide similar lithological information when compared to the mapped geology. The supervised approach provides the results that are the most comparable to the mapped geology and this is not unexpected as
this approach benefits from fieldwork and supporting geochemical and thin-section analysis.
An outline of reaction equilibrium
Authors: Froese E
Published: November 2010

The consideration of the mole numbers of chemical species as variables characterizing a macroscopic state makes it possible to define the affinity of a chemical reaction in terms of thermodynamic concepts. This approach leads to the basic relationship of reaction
equilibrium in a closed system with one chemical reaction:
<>

where G is the total Gibbs energy, (epsilon) is the extent of reaction,Gi is the partial molar Gibbs energy of a species, and (nu)i is the stoichiometric coefficient. The partial derivative <> is commonly designated as the Gibbs
energy change of reaction and given the symbol (Delta)G. At arbitrary values of (epsilon), (epsilon) can be regarded as a constraint keeping the system in a metastable equilibrium. Upon release of this constraint, a negative value of (Delta)G indicates a tendency of the reaction to proceed from
reactants to products. Relationships required to evaluate (Delta)G at a given pressure, temperature, and composition of solid and gaseous species are discussed.
Digital surficial geology data of the Greater Toronto and Oak Ridges Moraine area, southern Ontario
Authors: Sharpe D R , Barnett P J , Brennand T A , Gorrell G , Russell H A
J
Published: November 2010

This CD-ROM digital release contains digital files for the surficial geology of the Greater Toronto and Oak Ridges Moraine areas. The data on this CD-ROM has been released previously as hardcopy Geological Survey of Canada Open File 3062. Additionally, all of the
1:50 000 scale mapsheets in this release have been released in hardcopy format by either the Geological Survey of Canada or Ontario Geological Survey. New mapping was completed for the nine mapsheets within the NATMAP study area. This re-mapping is based on new field work complemented by archival
field data. Combined most maps have > 1,000 field sites. The six maps outside the NATMAP area have been re-mapped with a minimum of new fieldwork but include re-assessed archival data and a simple common legend. The summary map here retains the linework, legend, and many of the symbols of
the 1:50 000 map series.
The geology coverage on this CD-ROM is provided in a variety of vector formats (E00, Shape, MapInfo).
This CD-ROM does not contain any base information from Geomatics Canada National Topographic Database.
The Oak Ridges Moraine NATMAP and Hydrogeology Project has been a collaborative geoscience project with the Ontario Geological Survey, Ontario Ministry of Environment and the Ontario Ministry of Natural Resources.
GIS-enabled subsurface time and depth structure maps, Cambrian to Cretaceous, Great Bear and Mackenzie plains, Northwest Territories
Authors: MacLean B C
Published: November 2010

A dataset consisting of over 300 reflection seismic lines, 75 wells, and numerous surface maps was used to develop a set of subsurface maps which are presented here in a digital GIS format. Map contours are in units of reflection time (msec) or metres and depths
are relative to a datum of 305 m (1000') above sea level. The area of study extends from 63° to 66° north latitude and from Great Bear Lake in the east to the Mackenzie Mountains in the west and contains the physiographic areas of Great Bear Plain, Mackenzie Plain, and the Franklin
Mountains including the McConnell and St Charles ranges. The maps all show relatively thin and undeformed Phanerozoic strata under Great Bear Plain that dip westward towards the Laramide deformed belts. Deepest (or thickest) strata are associated either with foreland basins or a central area of
subsidence involving rhomboid shaped grabens. Prominent tectonic features include the Cambrian Mackenzie Trough and Mahony Arch, grabens of Cambrian and younger age that affect the underlying Proterozoic strata, and the multi-phase Keele Arch. Overprinting these are features created by movement of
Cambrian salt and by regional tectonics imposed during the Laramide Orogeny.
Uranium-lead geochronology of two intrusions in the southern Bowser Basin, British Columbia
Authors: Haggart J W , Woodsworth G J , McNicoll V J
Published: November 2010

We report new U-Pb data for two intrusions that cut Bowser Lake Group strata in the southern Bowser Basin.Agranitic rock from the Mount Priestley stock gave a U-Pb zircon crystallization age of 51.8 ± 0.3 Ma. Zircons from a porphyritic andesite dyke on the
ridge north of Stenstrom Creek gave a crystallization age of 83.2 ± 0.2 Ma. These ages are similar to others from the southern Bowser Basin and suggest two episodes of magmatism in the basin, one in the latest Cretaceous and one in the Early Eocene.
Comparison of single- and multichannel high-resolution seismic data for shallow stratigraphy mapping in St. Lawrence River estuary, Quebec
Authors: Bellefleur G , Duchesne M J , Hunter J , Long B F , Lavoie D
Published: November 2010

During the summer of 2004, over 1150 km of high-resolution marine seismic-reflection data were acquired along 28 profiles in the St. Lawrence River estuary. The main objectives of the survey were to study the stratigraphy of unconsolidated Quaternary sediments,
to locate areas with natural gas, and to provide information on shallow structures and rock types of the basement. The seismic data were acquired with a single-channel and a multichannel streamer to assess improvements and differences between seismic images resulting from the two acquisition
geometries. In general, the single- and multichannel data display very similar regional geological information. The multichannel data locally provides additional details for some geological structures within the unconsolidated sediments and underlying bedrock.
Correlations in the Lower Cretaceous Parsons Group in the vicinity of Parsons Lake, Beaufort-Mackenzie area, N.W.T.
Authors: Dixon J
Published: November 2010

Detailed correlations within the Parsons Group indicate the presence of a major unconformity within the Kamik Formation, the youngest unit within the group. Also revealed is the development of the Parsons structure during the formation of this unconformity, as
well as younger events.
Production of a residual gravity anomaly map for Gaspésie (northern Appalachian Mountains), Quebec, by a graphical method
Authors: Pinet N , Keating P , Brouillette P , Dion D -J , Lavoie D
Published: November 2010

The authors present a residual gravity map for Gaspésie based on a separation of the regional and residual fields by a graphical method. This map results from the smoothing of 24 gravity profiles with lengths that far exceed the dimension of the zone of
interest. The base value of the regional field has been estimated by taking into account surface data and by calculating the maximum gravity lows associated with
relatively low-density Silurian-Devonian rocks. The residual gravity map includes all the gravity features that are clearly associated with shallow sources and shows a minimum distortion of the shape of the anomalies.
Surficial geology, Cottonwood, British Columbia
Authors: Blais-Stevens A , Clague J J
Published: November 2010

The surficial geology of the Cottonwood map area provides a record of the late Quaternary history of central British Columbia near the centre of the former Cordilleran Ice Sheet. The map depicts a variety of sediment units of glacial and non-glacial origin
superposed on a hillshade derived from a Digital Elevation Model (DEM). From oldest to youngest, the units are bedrock, till, glaciofluvial deposits, glaciolacustrine deposits, colluvium, alluvium, and organic deposits. Till, the most aerially extensive deposit, was deposited by glacier ice and
consists of boulder- to pebble-sized clasts in a matrix of sand, silt, and clay. Till underlies north-trending drumlins that indicate ice flow to the north. Glaciofluvial deposits consist of stratified, well-sorted to poorly-sorted sand and gravel. They are associated with eskers, terraces, and
blankets. Some glaciofluvial deposits are kettled. Glaciolacustrine deposits comprise sand, silt, and clay deposited in a former glacial lake impounded by decaying ice masses. Colluvium is derived mainly from glaciolacustrine deposits that failed along river banks. Alluvium consists of fine silt,
sand, and minor gravel deposited along modern streams after deglaciation. Organic deposits include peat and organic-rich mud that have accumulated in poorly drained depressions formed in older sediments and bedrock.
Digital geoscience atlas of Baffin Island (south of 70°N and east of 80°W), Nunavut
Authors: St-Onge M R , Ford A , Henderson I
Published: November 2010

This Open File contains: (1) a geological bedrock compilation (1:500 000 scale); (2) planar and linear structural point data; (3) scanned images of source maps utilized for the bedrock compilation; (4) sample number, radiometric age, interpretation, dated
material, and analytical method for available geochronology data; (5) a compilation of geochemical data for volcanic and granitoid units; (6) a compilation of mineral occurrences detected through ground observations, geochemical analyses of rock samples for target elements, or geophysical surveys;
(7) aeromagnetic (total field and 1st derivative) and gravity compilations; (8) 3-D models and radiometric data; (9) available surficial material compilations (1:100 000 and 1:250 000 scales); (10) hydrographic features and topographic contours (1:250 000 scale); (11) a digital elevation model and
shaded relief map; and (12) a Landsat image for Baffin Island and adjacent islands (Nunavut) south of 70°N and east of 80°W.
The purpose of this Open File is to provide a complete, digital, internally consistent, and geo-referenced collection of spatial data that can be cross-referenced and will assist interested parties in mineral exploration, environmental studies, land-use planning, and other investigations requiring
up-to-date Earth Sciences information and data.
Atlas géoscientifique numérique, ceinture de Cape Smith et environs, péninsule d'Ungava, Québec-Nunavut
Authors: St-Onge M R , Lamothe D , Henderson I , Ford A
Published: November 2010

This Open File contains (1) a geological bedrock compilation (1:300 000 scale); (2) planar and linear structural point data; (3) scanned images of source maps utilized for the bedrock and surficial compilation; (4) sample number, radiometric age, interpretation,
dated material, and analytical method for available geochronology data; (5) a compilation of geochemical data for volcanic and granitoid units; (6) lithology and mineral assemblage data; (7) aeromagnetic (total field and 1st derivative) and gravity compilations; (8) 3-D models and radiometric data;
(9) available surficial material compilations (1:5 000 000 and 1:250 000 scales); (10) hydrographic features and topographic contours (1:250 000 scale); (11) a digital elevation model and shaded relief map; (12) cross-sections; and (13) a Landsat image of the Cape Smith Belt and adjacent domains.
The purpose of this Open File is to provide a complete, digital, internally consistent, and geo-referenced collection of spatial data that can be cross-referenced and will assist interested parties in mineral exploration, environmental studies, land-use planning, and other investigations requiring
up-to-date Earth Sciences information and data.
Mapping sensitive benthic habitats in the Strait of Georgia, coastal British Columbia: deep-water sponge and coral reefs
Authors: Conway K W ,   Geological Survey of Canada, Barrie J V , Hill P R , Austin W C , Picard K
Published: November 2010

The reef-forming scleractinian coral, Lophelia pertusa has been recovered in bottom samples and observed as a dense debris field during remote-operated vehicle transects on a terrace on the flank of a steep-sided seamount-like knoll in the central Strait of
Georgia, British Columbia. The coral debris has a minimum thickness of 33 cm and extends over several hectares in water depths of 225 to 255 m, suggesting that the coral community dominated this site for several centuries. Lophelia pertusa forms extensive reefs in many regions of the world,
suggesting that a cold-water coral reef existed at this site in the recent past. This site and a sample from the west coast of Vancouver Island represent the first recognized British Columbia occurrences of Lophelia pertusa. In addition, regional multibeam surveys have revealed the presence of small
(< 1 square km) Hexactinellid sponge reefs in waters 100 to 140 mdeep along the eastern approaches to the Gulf Islands in the southern Strait of Georgia in areas of low-relief glacial deposits. The surfaces of these reefs are covered with large Hexactinosidan sponges, predominately
Heterochone calyx and Aphrocallistes vastus, or mantled with broken sponges where anthropogenic impacts, including trawling, have occurred. Mapping of these and other sensitive habitats will allow effective ocean management measures to be undertaken by the responsible
agencies.
Pore-size distribution of samples from the Mallik 5L-38 well, Northwest Territories
Authors: Connell-Madore S , Katsube T J
Published: November 2010

Pore-size distribution analysis was performed on twenty-eight sediment samples from the Mallik 5L-38 research well, Northwest Territories. This study includes analysis and interpretation of pore-size distribution data obtained by mercury-injection porosimetry
measurements. The purpose of this paper is to document, within the framework of the JAPEX/JNOC/GSC Mallik Gas Hydrate Research Project, results of pore-size analysis and to provide pore-structure information on the sediments.
The mercury porosity, storage, and connecting porosity values are in the ranges of 7.71-47.41%, 0.43-46.48%, and 0.61-12.9%, respectively. There are two prominent pore-size distribution modes visible related to grain-size distribution differences. There are six anomalous fine sand and
silty sand samples (P2EJA-11,-17, -21, -22, -27, and -28) that have considerably higher storage porosities (30%).
2005 reconnaissance field program in Peel Plateau and Peel Plain region, Northwest Territories and Yukon Territory
Authors: Pyle L J , Jones A L , Gal L P , Abbott J G , McCracken A D , Fowler M G , Stasiuk L
D
Published: November 2010

In 2005, reconnaissance fieldwork was carried out in Peel Plateau and Peel Plain (Peel region) which lies along the northern Mackenzie corridor. Peel region is a prospective petroleum province that straddles the Northwest Territories - Yukon Territory border, and
the focus of a four-year, multi-agency study. Reconnaissance on the regional geology and petroleum potential included surveying river exposures in Peel region and along the deformation front that flanks the western and southern edges of Peel Plateau (Richardson and Mackenzie mountains, respectively)
within Trail River (NTS 106 L), Snake River (NTS 106 F), Ramparts River (NTS 106 G), and Sans Sault Rapids (NTS 106 H) map areas. Rock-Eval® pyrolysis forTOCof potential source-rock horizons indicates excellent original source-rock potential of the Canol and Hare Indian formations. Conodont samples
provide new biostratigraphic ages for Ordovician to Devonian strata. Conodont colour alteration index values range from 2 to 5.
Croissance et fonte de glaciers d'âge holocène dans la région de la rivière Keel, dans l'île de Baffin, au Nunavut
Authors: St-Jean M , Lauriol B , Clark I D , Utting D J
Published: November 2010

This study presents climatological and glaciological elements linked to the growth and melting of three small ice caps in the Keel River area, Baffin Island, Nunavut. An hypothesis for the formation of plateau glaciers related to Neoglacial climate cooling 4000
to 5000 years ago, is questioned by the results of isotopic analyses of ice samples (delta-18O = -25 per mille to -21 per mille; delta-D = -190 per mille to -161 per mille) and radiocarbon dating. Mosses buried on the margin of one of the domes were dated at 3720 BP and leaves from the glacier
surface, at 240 BP. Furthermore, the three ice caps have lost about half their area in the last 44 years.
Geological setting of Ag-Pb-Zn veins in the Purcell Basin, British Columbia
Authors: Paiement J -P , Beaudoin G , Paradis S
Published: November 2010

The Proterozoic Purcell Basin in Canada (Belt Basin in U.S.A.) contains numerous Ag-Pb-Zn vein deposits and stratiform massive sulphide Pb-Zn-Ag deposits. In the Coeur d'Alene district in Idaho, veins have been divided in two types: Proterozoic Pb-Zn-rich veins
and Mesozoic Ag-Pb-Zn rich veins. Based on previous Pb-isotope work, the vein deposits of the Purcell Supergroup in British Columbia can be divided into the same two groups. Representative veins of the Purcell Supergroup having a Proterozoic and Mesozoic Pb-isotope signature were sampled during the
2006 field season and are described in this paper. Preliminary results show that the Pb-Zn-rich veins are massive and only present in the Aldridge Formation, and the Ag-Pb-Zn-rich veins mainly consist of galena in a quartz gangue, and crosscut various strata of the Purcell Supergroup. Further work
will attempt to characterize the sources of the mineralizing fluids, and the
O, S, C, and Pb isotopic composition in both types of veins and compare them to the Coeur d'Alène district in Idaho, U.S.A.
Sedimentology, correlation, and depositional environment of the upper Purcell Supergroup, northern Purcell Basin, southeastern British Columbia
Authors: Gardner D , Johnston S T
Published: November 2010

The upper Purcell Supergroup was deposited in a marine to lagoonal setting ca. 1.4 Ga. Sections measured and mapping completed during the summer 2006, in combination with existing maps, permits a test of previous stratigraphic correlations. Replacement of Dutch
Creek Formation to the west by the La France Creek Group reflects the westward thinning and increased sand content of this unit. The Dutch Creek Formation is replaced to the south by the Gateway and Roosville formations. A micaceous north-tapering sandstone unit, the Phillips Formation, separates
the Gateway and Roosville formations, and provides a record of syndepositional change in the architecture of the Purcell Basin. The authors speculate on potential reasons for Phillips Formation pinch out and attribute it to either continued basin subsidence to the south or to the presence of an
unidentified large-scale fault.
Chasm and Dog Creek lithofacies, Chilcotin Group basalt, Bonaparte Lake map area, British Columbia
Authors: Farrell R E , Andrews G D M , Russell J K , Anderson R G
Published: November 2010

A diverse range of lithofacies occur within the Neogene Chilcotin Group in south-central British Columbia. Stratigraphic sections at Chasm Park and Dog Creek are dominated by subaerial, flat-lying basaltic lavas on top of, or interstratified with, minor pillow
basalt and hyaloclastite units. The stratigraphic successions show depositional environments consistent with lava emplacement into mature
paleochannels containing rivers and lakes. The nature of deposits observed in the Chasm and Dog Creek sequences show pronounced differences in the style of subaerial lava emplacement related to the differences in effusion rates, proximity to the vent, and paleotopography. A fundamental conclusion
is that the complex stratigraphy of the subaerial lavas of the Chilcotin Group define a variety of lithofacies; the Chasm and Dog Creek lithofacies are defined in this paper.
Paskapoo groundwater study. Part I: hydrogeological properties of the Paskapoo Formation determined from six continuous cores
Authors: Grasby S , Tan W , Chen Z , Hamblin A P
Published: November 2010

This CD contains a report that summarizes results of hydrogeological properties measured from six deep coreholes. Fifty-six representative sandstone samples of the Paskapoo Formation were collected for thin section petrography to determine mineralogical,
textural, digenetic and aquifer characteristics. Major mineralogical compositions, grain constituents and porosity were semi-quantified using visual estimation. Petrography data is summarized in table format, including framework mineralogy, diagenetic minerals, rock type, texture and porosity.
Representative photomicrographs with descriptions of the thin sections are provided. Helium porosity measurements were made for all sandstone samples with corresponding thin sections. In addition, air-permeameter measurements, conducted by the Alberta Geological Survey, were taken along the cores.
All results and data are presented here. CD is in PDF format.
Geological and geochemical data from the Canadian Arctic Islands. Part IV: gasoline range and saturate fraction gas chromatograms of oil samples
Authors: Obermajer M , Dewing K , Fowler M G
Published: November 2010

Digital files of gasoline range and C15+ saturate fraction gas chromatograms of 37 oil samples obtained from exploration boreholes in the Canadian Arctic Islands are presented. Each sample is assigned to a stratigraphic unit. The significance of the data is not
discussed here.
Paskapoo groundwater study part IV: detailed outcrop measured sections of the Paskapoo formation in the Red Deer region, Alberta
Authors: Hamblin A P
Published: November 2010

The Paskapoo Formation, of Paleocene age, is an important, but poorly understood groundwater aquifer in western Alberta, and is now emerging as a shallow gas reservoir. Because the Paskapoo represents the bedrock at surface over its area of occurrence, and has
not previously been a major hydrocarbon target, there has been little study of outcrop or subsurface data. This report summarizes outcrop fieldwork along the Red Deer River, in an east-west transect, both eastward and westward of the city of Red Deer, where Paskapoo rocks are intermittently exposed.
In this report, the information is presented as 12 standard measured sections, with text descriptions of units and paleocurrent data, which (from east to west) approximate a continuous succession of the lower and middle portions of the formation. The lower Paskapoo is characterized by thick,
multi-storied fluvial channel sandstones (Haynes Member) with dispersal toward the east-northeast. The middle Paskapoo comprises primarily thinly interbedded siltstones and sandstones (Lacombe Member) also with dispersal toward the east-northeast. This report is meant to be complementary to two
other Open File reports: one on the Paskapoo (and related stratigraphic units) of the Calgary region (GSC OF 5536), and a second describing relevant cores in the central Alberta region (GSC OF 5537).
Shear wave measurements for earthquake response evaluation in Orleans, Ontario
Authors: Crow H , Pyne M , Hunter J A , Pullan S E , Motazedian D , Pugin A
Published: November 2010

The Geological Survey of Canada and Carleton University collected shear wave data at 63 seismic sites in the Ottawa suburb of Orleans as part of the Eastern Canada Geohazards Assessment Project. Data collection techniques included reflection/refraction and
landstreamer profiling. Previous collection and analysis of high-resolution borehole velocity logs in 18 borings in the Ottawa-Montreal area led to the definition of an average shear-wave velocity-depth function unique to these sediments. This formula, when applied to 835 borehole logs from within
Orleans, was used to estimate a Vs30 value at each location, based on the soil type described in the log. The combined data from surface seismic sites and derived velocity-depth calculations were contoured to produce a Vs30 map of Orleans. Shear wave velocity and post-glacial thickness information
was also used to produce a fundamental site period map.
High Vs30 values (>1500 m/s) were calculated in areas of thin overburden, and very low Vs30 values (<180 m/s) were obtained in areas underlain by thick deposits of post-glacial sediments. Of note is a buried bedrock valley with steep sides which extends in an elongate, NE-SW
trend for approximately 2.5 km under Orleans. Borehole data alone did not clearly define the extent or depth of the clay-filled bedrock valley, which reached a depth of 95 meters in places. Due to the high velocity contrast between post-glacial sediments and bedrock in the Ottawa area, ongoing
research is being carried out to address the unusually high soil amplification factors observed in the study area.
Intermediate to mafic volcaniclastic units in the peripheral Blake River Group, Abitibi Greenstone Belt, Quebec: origin and implications for volcanogenic massive sulphide exploration
Authors: Ross P -S , Percival J A , Mercier-Langevin P , Goutier J , McNicoll V J , Dubé B
Published: November 2010

Three regionally mappable, plagioclase-rich, intermediate to mafic volcaniclastic units from the peripheral parts of the Archean Blake River Group show intriguing similarities, including a lack of an intimate association with lava flows; and a bedded aspect, with
thick, coarse beds displaying a typical sequence of internal features, suggesting deposition from high-density mass flows. The bounding facies and the great volume of variably amygdaloidal clasts and plagioclase crystals contained in the deposits supports major submarine explosive eruptions as the
source of the bulk of the material. The physical resemblance between the different volcaniclastic units initially suggested a stratigraphic correlation, but preliminary geochemical data argues against this: the D'Alembert tuff consists of basaltic andesite and andesite of transitional to
calc-alkaline affinity, whereas the Stadacona unit essentially comprises tholeiitic basalt, with very different profiles on multi-element plots. Any hypothesis involving a megacaldera and a huge underlying magma chamber to explain the origin of these volcaniclastic units would need to justify such
chemical differences. The authors favour a simpler scenario in which the D'Alembert tuff and the Stadacona unit were derived from much smaller, geographically and chemically distinct magma chambers. The explosive eruptions could have taken place at different times and no stratigraphic correlation
between the volcaniclastic units is necessary. Peripheral areas of the Blake River Group contain more fragmental material than the traditional Noranda camp, and therefore offer exploration potential for large volcanogenic massive sulphide deposits formed in part by subseafloor replacement, which are
preferentially hosted in volcaniclastic rocks (e.g. Bouchard-Hébert, LaRonde Penna).
Investigation of geothermal energy resources, Nova Scotia and Prince Edward Island
Authors:   John A. Leslie and Associates Limited
Published: November 2010

Data pertinent to the assessment of the geothermal energy resources of Nova Scotia and Prince Edward Island have been compiled and collected. Hot water in both on-shore and off-shore aquif ers and hot dry rock within Palaeozoic intrusives are considered as
potential geothermal resources and, therefore, constituted the principal study areas. Although there is insuff icient data available to delineate specific target areas, there is ample suggestion that geologic environments may exist with as yet indeterminate potential. Further investigations are
recommended so that the geothermal energy resources of the region may be fully evaluated.
The identification of structural linears from Landsat imagery in northwestern Ontario
Authors:   Geo-analysis Ltd
Published: November 2010

A lineament study covering an area of 1S6,000 krn 2 in northwestern Ontario has been completed from Landsat imagery. Mean lineament azimuths for seven geological subprovinces are: 069° (English River), 064° (Wabigoon), 07S 0 (Quetico), 084° (Wawa),
060° (Lake Superior Basin), OSS 0 (Port Arthur Homocline) and 1S3° (Nipigon Plate). A 1:1,000,000 compilation of the mapped linears shows many interesting apparent structural trends and demains of coherent deformational style. Maps of lineament density and intersection frequency shows
several areal minima. While some lows correspond to areas of thick glacial caver, 23 other areas appear to be regions of genuine low lineament density.
Living theologically – Towards a theology of Christian practice in terms of the theological triad of orthodoxy, orthopraxy and orthopathy as portrayed in Isaiah 6:1–8: A narrative approach
Authors: Woodbridge Noel B.
Published: November 2010

This article explores the connection between life and theology. Today, many people do not understand the connection between theology and everyday life. In particular, many of today’s theological students are leaving theological institutions and entering the ministry with a fragmented theology instead of an integrated theology. A brief historical and literature review indicates that there are three perspectives in contemporary theology, namely the theological triad of orthodoxy, orthopathy and orthopraxy. A brief analysis of the three perspectives indicates a close connection between theology and everyday life: theology and life are linked in praise (orthodoxy), action (orthopraxy) and passion (orthopathy). This article focuses on the paradigm of narrative theology and shows that, when used correctly, narrative theology provides the building blocks for systematic theology and biblical theology. Narrative theology also provides helpful insights when it takes into account legitimate literary concerns, such as the historical background of the Bible passage and the author’s theology and purpose. The close connection between theology and everyday life is clearly portrayed in a narrative approach to Isaiah 6:1–8, especially when it illustrates how the story (narrative) shapes each of the three perspectives of the theological triad.
Management competencies in higher education: Perceived job importance in relation to level of training required
Authors: Potgieter Ingrid L. , Coetzee Melinde
Published: November 2010

Orientation: The increasing changes and demands placed on higher education institutions in the 21st century and resultant impact on the roles and responsibilities of heads of department (HODs) have led to an increasing emphasis on the development of core HOD management competencies.Research purpose: The aim of this article is to determine the relationship between a specific set of HOD managerial competencies identified as being important for the job and the level of training required in terms of these competencies.Motivation for the study: Research has provided evidence that HODs are often ill-prepared for their managerial role, which requires the development of specific management competencies to enable them to fulfil their roles effectively.Research design, approach and method: A non-experimental quantitative survey design approach was followed and correlational data analyses were performed. A cross-sectional sample of 41 HODs of 22 departments from various faculties of a higher education institution in Gauteng participated in this study. The Management Competency Inventory (MCI) of Visser (2009) was applied as a measure.Main findings: The Pearson product-moment analysis indicated that there is a significant relationship between the competencies indicated as being important for the job and the level of training required.Practical/Managerial implications: Training needs of HODs should be formally assessed and the depth of training required in terms of the identified management competencies should be considered in the design of training programmes.Contributions/Value-add: The information obtained in this study may potentially serve as a foundation for the development of an HOD training programme in the South African higher education environment.
Multiphysics superensemble forecast applied to Mediterranean heavy precipitation situations
Authors: Vich M. , Romero R.
Published: November 2010

Abstract. The high-impact precipitation events that regularly affect the western Mediterranean coastal regions are still difficult to predict with the current prediction systems. Bearing this in mind, this paper focuses on the superensemble technique applied to the precipitation field. Encouraged by the skill shown by a previous multiphysics ensemble prediction system applied to western Mediterranean precipitation events, the superensemble is fed with this ensemble. The training phase of the superensemble contributes to the actual forecast with weights obtained by comparing the past performance of the ensemble members and the corresponding observed states. The non-hydrostatic MM5 mesoscale model is used to run the multiphysics ensemble. Simulations are performed with a 22.5 km resolution domain (Domain 1 in http://mm5forecasts.uib.es) nested in the ECMWF forecast fields. The period between September and December 2001 is used to train the superensemble and a collection of 19~MEDEX cyclones is used to test it. The verification procedure involves testing the superensemble performance and comparing it with that of the poor-man and bias-corrected ensemble mean and the multiphysic EPS control member. The results emphasize the need of a well-behaved training phase to obtain good results with the superensemble technique. A strategy to obtain this improved training phase is already outlined.
When Academia Comes to Market: Does University Affiliation Reduce the Uncertainty of IPOs?
Authors: Bonardo Damiano , Paleari Stefano , Vismara Silvio
Published: November 2010

Companies obtain significant benefits and resources from university affiliations. Building on recent contributions in organizational theory and signalling theory, the authors argue that such relationships redress investors' concerns over the legitimacy of firms and act as an uncertainty-reducing signal. They study the population of university spin-offs that have gone public in Europe over the last decade, and find that academic affiliation reduces uncertainty and enhances the chances of survival in the long term, controlling for characteristics related to firm quality, including measures of intellectual and relational capital as well as corporate governance mechanisms. Thus, external stakeholders consider academic affiliation as a valuable and non-substitutable resource.
Brownian motion in fluctuating periodic potentials
Authors: Abad Enrique , Mielke Andreas
Published: November 2010

This work deals with the overdamped motion of a particle in a fluctuating one‐dimensional periodic potential. If the potential has no inversion symmetry and its fluctuations are asymmetric and correlated in time, a net flow can be generated at finite temperatures. We present results for the stationary current for the case of a piecewise linear potential, especially for potentials being close to the case with inversion symmetry. The aim is to study the stationary current as a function of the potential. Depending on the form of the potential, the current changes sign once or even twice as a function of the correlation time of the potential fluctuations. To explain these current reversals, several mechanisms are proposed. Finally, we discuss to what extent the model is useful to understand the motion of biomolecular motors.
Fermi‐liquid quasi‐particles and ‐superconductivity in the two‐dimensional Hubbard model
Authors: Wermbter S.
Published: November 2010

A frequency‐ and momentum‐renormalization‐group acceleration together with an analytical approach is used to obtain the retarded Green's function in the self‐consistent and conserving fluctuation‐exchange (FLEX) approximation for the two‐dimensional Hubbard model in the normal state and in the superconducting state. The analytical expressions for this approach are given. For band‐fillings near half filling the self‐energy in the normal state exhibits Fermi‐liquid behaviour for, low temperatures and frequencies near the chemical potential, if the momentum is chosen near the Fermi‐surface. However due to the presence of large many body effects the observed Fermi‐liquid region near the chemical potential and near the Fermi‐surface is very small. Results for the single particle density of states, the occupation number and the spectral function are presented. The superconducting state with symmetry is obtained for U = 2 to U = 6 and a (U, n)‐phase diagram for the transition temperature Tc is presented. A maximum Tc/t of 0.0275 is obtained for U = 6 near half filling.
Static potential renormalization in time‐dependent fields
Authors: Brandes T.
Published: November 2010

We consider the scattering of electrons at a static potential under the influence of an additional time‐dependent, homogeneous electric field (‘microwave’). Starting from a plane wave basis, we derive a generalization of the Born (first) order approximation in arbitrary strong oscillating fields. As an example, we evaluate the Friedel density oscillations around a static scatterer whose potential is renormalized by the microwave. The microwave leads to a band of inelastic scattering channels with effective potentials, the shape of which can be ‘tuned’ by the microwave polarization and strength.
Models for Prediction of V600EBRAF and Melanoma Cells Growth Inhibitory Activities of Pyridoimidazolones
Authors: Dutt R. , Madan A. K.
Published: November 2010

Targeted inhibition of activated BRAF mutation has emerged as a most promising and putative therapeutic approach for the anticancer drug development. In the present study, an in‐silico approach using decision tree and moving average analysis has been applied to a data set comprising of 43 analogues of pyridoimidazolones for development of models for prediction of both V600EBRAF and melanoma cells (BRAF WM266.4) growth inhibitory activities. A decision tree was mainly employed for determining the importance of molecular descriptors (n = 46). The value of majority of these descriptors for each analogue in the dataset was computed using E‐Dragon software (version 1.0). The decision tree learned the information from the input data with an accuracy of 98% and correctly predicted the cross‐validated (10‐fold) data with accuracy up to 79%. A total of three non‐correlating descriptors, identified best by the decision tree analysis, were subsequently utilized for development of suitable models using moving average analysis. These proposed models resulted in the prediction of V600EBRAF inhibitory activity (IC50) and melanoma cells growth (SRB GI50) inhibitory activity with an overall accuracy of ≥90%. The statistical significance of models/descriptors was assessed through intercorrelation analysis, sensitivity, specificity and Matthew's correlation coefficient.
Evaluation of Polyhydroxybenzophenones as α‐Glucosidase Inhibitors
Authors: Hu Xuesen , Xiao Yang , Wu Jianlong , Ma Lin
Published: November 2010

This experiment was designed to synthesize 18 kinds of polyhydroxybenzophenones by using Friedel‐Crafts reaction, and to measure the inhibitory activity on α‐glucosidase with p‐nitrophenyl‐β‐D‐galactopyranoside (PNPG) as a substrate. Here, acarbose (IC50 = 1674.75 µmol L−1) was used as the reference inhibitor. The results demonstrated that most of the target compounds had remarkable inhibitory activities on α‐glucosidase. Among all these compounds, 2,4,4′,6‐butahydroxydiphenylketone (11) was found to be the most potent α‐glucosidase inhibitor with an IC50 value of 10.62 µmol L−1. In addition, we found these compounds were competitive inhibitors through the kinetic analysis. The results suggested that such compounds might be utilized for the development of new candidates for diabetes treatment.
Stevioside and Related Compounds – Molecules of Pharmaceutical Promise: A Critical Overview
Authors: Brahmachari Goutam , Mandal Lalan C. , Roy Rajiv , Mondal Sadhan , Brahmachari Arun K.
Published: November 2010

Stevioside, anent‐kaurene type of diterpenoid glycoside, is a natural sweetener extracted from leaves ofStevia rebaudiana(Bertoni) Bertoni. Stevioside and a few related compounds are regarded as the most common active principles of the plant. Such phytochemicals have not only been established as non‐caloric sweeteners, but reported to exhibit some other pharmacological activities also. In this article, natural distribution of stevioside and related compounds, their structural features, plausible biosynthetic pathways along with an insight into the structure–sweetness relationship are presented. Besides, the pharmacokinetics, wide‐range of pharmacological potentials, safety evaluation and clinical trials of theseent‐kaurene glycosides are revisited.
Identifying roles for neurotransmission in circuit assembly: Insights gained from multiple model systems and experimental approaches
Authors: Bleckert Adam , Wong Rachel O. L.
Published: November 2010

In the adult nervous system, chemical neurotransmission between neurons is essential for information processing. However, neurotransmission is also important for patterning circuits during development, but its precise roles have yet to be identified, and some remain highly debated. Here, we highlight viewpoints that have come to be widely accepted or still challenged. We discuss how distinct techniques and model systems employed to probe the developmental role of neurotransmission may reconcile disparate ideas. We underscore how the effects of perturbing neurotransmission during development vary with model systems, the stage of development when transmission is altered, the nature of the perturbation, and how connectivity is assessed. Based on findings in circuits with connectivity arranged in layers, we raise the possibility that there exist constraints in neuronal network design that limit the role of neurotransmission. We propose that activity‐dependent mechanisms are effective in refining connectivity patterns only when inputs from different cells are close enough, spatially, to influence each other's outcome.
Outcomes after laparoscopic intestinal resection in obese versus non-obese patients
Authors: Khoury W , Stocchi L , Geisler D
Published: November 2010

Background

The degree of benefit derived from laparoscopic bowel resection in obese compared with non-obese patients is poorly understood.

Methods

A total of 436 obese patients (body mass index (BMI) at least 30 kg/m2, mean 34·9 kg/m2) who underwent laparoscopic bowel resection during 1992–2008 were identified from a prospective database. An equal number of non-obese patients (mean BMI 24·8 kg/m2) was case-matched by age, sex, year of surgery, American Society of Anesthesiologists score, diagnosis and type of operation. Patients with previous major abdominal surgery were excluded. Postoperative morbidity and recovery were compared between obese and non-obese patients.

Results

Mean duration of operation (171·5 versus 157·3 min; P = 0·017), estimated blood loss (EBL; 224·9 versus 164·6 ml; P = 0·001) and conversion rate (13·3 versus 7·1 per cent; P = 0·003) were increased significantly in obese patients. Overall postoperative morbidity was also greater (32·1 versus 25·7 per cent; P = 0·041), particularly wound infection rate (10·6 versus 4·8 per cent; P = 0·002). Among laparoscopically completed operations, obese patients had higher rates of overall morbidity (31·5 versus 24·2 per cent; P = 0·026) and wound infection (10·2 versus 4·4 per cent; P = 0·002). Conversion was associated with increased EBL, intraoperative complications, overall morbidity and length of stay in both groups. The effect of conversion in worsening outcomes was comparable in obese and non-obese patients, except for a greater increase in incision length (11·0 versus 8·0 cm; P = 0·001) and EBL (304·8 versus 89·8 ml; P = 0·001) in obese patients.

Conclusion

Laparoscopic bowel resection results in greater morbidity in obese than in non-obese individuals. This difference remains comparable whether the procedure is completed laparoscopically or converted.
Structural Basis for the Properties of Two Single‐Site Proline Mutants of CYP102A1 (P450BM3)
Authors: Whitehouse Christopher J. C. , Yang Wen , Yorke Jake A. , Rowlatt Benjamin C. , Strong Anthony J. F. , Blanford Christopher F. , Bell Stephen G. , Bartlam Mark , Wong Luet‐Lok , Rao Zihe
Published: November 2010

The crystal structures of the haem domains of Ala330Pro and Ile401Pro, two single‐site proline variants of CYP102A1 (P450BM3) from Bacillus megaterium, have been solved. In the A330P structure, the active site is constricted by the relocation of the Pro329 side chain into the substrate access channel, providing a basis for the distinctive CH bond oxidation profiles given by the variant and the enhanced activity with small molecules. I401P, which is exceptionally active towards non‐natural substrates, displays a number of structural similarities to substrate‐bound forms of the wild‐type enzyme, notably an off‐axial water ligand, a drop in the proximal loop, and the positioning of two I‐helix residues, Gly265 and His266, the reorientation of which prevents the formation of several intrahelical hydrogen bonds. Second‐generation I401P variants gave high in vitro oxidation rates with non‐natural substrates as varied as fluorene and propane, towards which the wild‐type enzyme is essentially inactive. The substrate‐free I401P haem domain had a reduction potential slightly more oxidising than the palmitate‐bound wild‐type haem domain, and a first electron transfer rate that was about 10 % faster. The electronic properties of A330P were, by contrast, similar to those of the substrate‐free wild‐type enzyme.