bluuebunny/crossref_metadata_2025 huggingface dataset:
Foraminiferal biostratigraphy and palaeoenviron- mental analysis of the basal part of Kalamavka formation (Late Miocene, Ierapetra Basin, Eastern Crete)
Authors: Drinia H. , Antonarakou A. , Louvari M. A.
Published: January 2017

This work involves a preliminary quantitative analysis of benthic foraminifera for the purpose of the determination of palaeoenvironmental parameters (oxygenation, palaeobathymetry) of the depositional environment of the lower part of the typical section of Kalamavka Formation, in Ierapetra Basin, eastern Crete. The sediments of the studied section contain a rich foraminiferal fauna, mainly dominated by planktonic species. High resolution planktonic foraminiferal record reveals the presence of N. atlantica praeatlantica, N. acostaensis, P. siakensis suggesting an early Tortonian chronostratigraphic age. The quantitative assessment of palaeodepth, suggests deposition at middle shelf to bathyal water depths with moderate organic matter fluxes and elevated oxygen contents of the bottom water, typical for this water depth interval.
Rock characterization for the foundation of two water reservoirs using geophysical and borehole data
Authors: Vafidis A. , Andronikidis A. , Hamdan H. , Kritikakis G. , Economou N. , Panagopoulos G. , Zanettidis S. , Merziotis D. , Pateras S. , Nikoforakis E. , Blais J. P.
Published: January 2017

In this work, we present the results of a geophysical survey at Malia, Crete, Greece. This survey combines VES, electrical tomography and seismic refraction at two sites where equal number of water reservoirs is planned to be constructed for the needs of a hybrid power station using wind-hydro pumping renewable energy. The geophysical sections are interpreted using geological and borehole data. This survey determines the thickness of the overburden, defines the quality of the carbonate bedrock, detects faults   and weathered zones in carbonates. One major very low resistivity anomaly was detected at the northern investigated area, which corresponds to completely fractured or weathered limestone, while a 25m deep fracture zone, was detected at the southern investigated area.
Preliminary results of high resolution paleoceanography and paleoclimatology during sapropel S1 deposition (South Limnos Basin, North Aegean Sea).
Authors: Kostopoulou S. , Triantaphyllou M. B. , Dimiza M. D. , Gogou A. , Bouloubassi I. , Rousakis G. , Parinos C. , Diamantopoulou An. , Geraga M. , Lykousis V.
Published: January 2017

The paleoenviromental conditions during the depositional interval of sapropel S1 in the northeastern Aegean (gravity core M-4, length 2.53 m; south Limnos basin) are studied based on quantitative micropaleontological (benthic and planktonic foraminifera) and geochemical (OC, δ13Corg) analyses. Special feature of core M-4 is the thickness of S1 layer (96 cm). Our study points that sapropelic layer S1a has been deposited in more dysoxic and warmer conditions in respect to S1b. Both primary productivity and preservation of organic material are more intense during the lower part of S1. An interruption of the sapropelic conditions at 8.0 Ka BP which is mainly characterized by the increase of agglutinated foraminiferal forms confirms both higher oxygen bottom conditions and freshwater input.
Biostratigraphical and sedimentological study of an Upper Cretaceous succession in the Sami area (central area of Kefallinia, W. Greece)
Authors: Zoumpouli E. , Pomoni-Papaioannou F. , Zelilidis A. , Iliopoulos G.
Published: January 2017

On the island of Kefallinia, which lies at the external edge of the Hellenides fold and thrust system, appear the Paxi and the Ionian Zones. In this study, an Upper Cretaceous carbonate succession, which is a part of the Paxi Zone, cropping out near the area of Sami (central area of Kefallinia), is discussed in detail with regard to its depositional facies, microfacies, biostratigraphy and palaeoenviroments. Detailed sedimentological and palaeontological investigations have been carried out on seven sections and petrographic analysis of thin-sections that led to the recognition of a number of microfacies types grouped into four facies zones. There was recorded a supratidal- intertidal (restricted)-intertidal (open lagoon)- subtidal (or shallow subtidal) vertical transition. Supratidal facies are characterized by fenestral and peloidal wackestone / packstone, intertidal (restricted) facies are represented by bioclastic wackestone and bindstone, whereas intertidal (open lagoon) facies are indicated by bioclastic packstone. Finally subtidal facies are dominated by bioclastic floatstone and grainstone. Benthic foraminifera are especially abundant and along with calcareous algae are the most important fossils used for age determination. The benthic foraminiferal genera that were identified (Cuneolina sp., Quinqueloculina sp., Nezzazata sp., Pseudonummoloculina sp., Dicyclina sp.), in addition with the observed calcareous algae, rudist and gastropods provide significant data for the depositional environments and the paleoecology of the Paxi Zone during the Upper Cretaceous.
Applying artificial neural networks in slope stability related phenomena
Authors: Tsangaratos P. , Benardos A.
Published: January 2017

Over the past years, Artificial Neural Networks (ANN) have been successfully used for the modelling in a great number of geoscience applications. In this paper we discuss the architecture and the way ANN work, presenting a specific learning algorithm which has been applied in the estimation of landslide susceptibility within a GIS environment.
Hydrothermal methane fluxes from the soil at Lakki plain (Nisyros Island, Greece)
Authors: D’Alessandro W. , Gagliano A. L. , Kyriakopoulos K. , Parello F.
Published: January 2017

Methane and CO2 flux measurements from the soils were made with the accumulation chamber method in Lakki plain covering an area of about 0.06 km2 including the main fumarolic areas of Kaminakia, Stefanos and Phlegeton. Flux values measured at 77 sites range from –3.4 to 1420 mg m-2 d-1 for CH4 and from 0.1 to 383 g m-2 d-1 for CO2. The three fumarolic areas show very different methane degassing patterns, Kaminakia showing the highest flux values. Methane output can be estimated in about 0.01 t a-1 from an area of about 2500 m2 at Phlegeton, about 0.1 t a-1 from an area of about 20,000 m2 at Stefanos and about 0.25 t a-1 from an area of about 30,000 m2 at Kaminakia. The total output from the entire geothermal system of Nisyros should not exceed 1 t a-1. Previous estimates of the CH4 output at Nisyros, based on soil CO2 output and CH4/CO2 ratios in fumarolic gases, were more than one order of magnitude higher. The present work further underscores the utmost importance of direct CH4 flux data.
Recent coastline changes of fan-deltas in the Western Gulf of Corinth, Central Greece
Authors: Perrou Th. , Kaza I. , Efthymiadis V. , Karymbalis E. , Chalkias C.
Published: January 2017

This study deals with the assessment of recent shoreline change rates along the fandeltas of Finix, Tholopotamo, Lagadi, Meganitas, Selinous, Kerinitis, and Vouraikos streams by using GIS and Remote Sensing techniques. These Late Holocene fandeltas have been formed by high gradient braided streams that deposit their coarse sediment load along the southern coast (North Peloponnese) of the western Gulf of Corinth. For the purposes of the study a spatial database was constructed, organized and implemented consisting of analogue detailed (at the scale of 1:5000) topographic diagrams, and orthorectified aerial photos taken in 1945, 1996 and 2008. Comparisons of fan-deltas shoreline positions for the periods 1945 vs. 1996 and 1945 vs. 2008 were made and the segments of the coastline along the aprons of the fan-deltas which are subject to erosion accretion were defined. Coastal erosion is the main dominant geomorphic process along a significant part of the fan deltas coastline. The highest retreat rate value (2.44 m/yr for the period 1945-1996) was estimated for the Finix stream fan delta, about 150 m west of the river mouth, while the highest accretion rates since 1945 (3.10 and 3.00 m/yr) occurred at the mouths of Vouraikos and Selinous rivers respectively.
Resistivity investigation for well-site definition around Barika Village, Southeast Sulaimany city, Iraqi Kurdistan region.
Authors: Ghaib A. F. , Abdulla H. , Anwar H.
Published: January 2017

An electrical resistivity survey involving Vertical Electrical Soundings (VES) was carried out in the Barika collective village, southeast of Sulaimany City in the Iraqi Kurdistan Region, to study groundwater characteristics such as depth, thickness and aquifer boundaries. Vertical electrical soundings by Schlumberger array were conducted in this area. The resistivity Schlumberger soundings which have a maximum current electrode spacing (AB) of 800m were carried out at fourteen sites along lines in the NE-SW and NW-SE directions. Interpretation of these soundings showed the presence of three geoelectrical horizons. The upper one is representing the alluvialdeposits with 3Ωm to 60Ωm range of resistivity values reflecting the heterogeneity of the slope deposits. The middle one is taken to be the unconfined jointed aquifer represented by the Tanjero Formation with a resistivity range of 10Ωm to 42Ωm and a thickness range of 24m to 106m. The third horizon is representing the lower part of the TanjeroFormation with a relatively high resistivity range of 51Ωm to 556Ωm. Based on these results and upon our recommendations, a successful water well was drilled yielding quite enough amount of fresh water.
Flood fatalities in Athens, Greece: 1880- 2010.
Authors: Diakakis M. , Katsetsiadou K. , Pallikarakis A.
Published: January 2017

Flood-related deaths in urban environments constitute a major issue in flood risk management especially during the last decades, as global urban population grows larger. This work focuses on the analysis of flood-related fatalities in Athens metropolitan area, in Greece between 1880 and 2010. To this aim, a database is compiled, recording spatial and temporal distribution of fatal flood incidents, along with demographic information on the victims. GIS is used to map and spatially analyze the incidents in question and to examine possible migration trends. Results showed a total  of  182  fatalities  across  Athens  basin,  presenting  a  decreasing  trend,  even though  flood  event  numbers  are  rising.  Males,  youngsters  and  elderly  people showed an overrepresentation amongst the victims in comparison with the country’s general population. Fatal incidents presented a higher spatial density in the central and southwestern parts of the city indicating a higher persistence of flood phenomena in these areas. A gradual migration of fatality locations, from the central parts of the city, towards the outer suburbs during the study period was identified following the city’s spatial expansion.
Coseismic stress distribution along active structures and their influence on timedependent probability values.
Authors: Paradisopoulou P. , Papadimitriou E. , Mirek J. , Karakostas V.
Published: January 2017

Based on the fact that stress changes caused by the coseismic slip of strong events can be incorporated into quantitative earthquake probability estimates, the goal of this study is to estimate the probability of the next strong earthquake (M≥6.5) on a known fault segment in a future time interval (30 years). The probability depends on the calculation of ΔCFF and the estimate of the occurrence rate of a characteristic earthquake, conditioned to the elapsed time since the previous event. The Coulomb stress changes caused by previous earthquakes are computed and their influence are considered by the introduction of a permanent shift on the time elapsed since theprevious earthquake or by a modification of the expected mean recurrence time. The occurrence rate is calculated, taking into account both permanent and temporary perturbations. The estimated probability values correspond to the probabilities along each fault segment with discretization of 1km, illustrating the probability distribution across the specific fault. In order to check whether the estimated probability vary with depth, all the estimations were performed for each fault at depths of 8, 10, 12 and 15 km.
Landslide detection using ALOS optical and radar data. A case study from the Ilia prefecture.
Authors: Nikolakopoulos K. G. , Choussiafis Ch. , Karathanassi V.
Published: January 2017

In this study the usefulness of the ALOS optical and radar data for landslide monitoring  is  examined.  ALOS  contains  three  sensors,  commonly  referred  to  as  the “three eyes” of ALOS. These sensors are: the Panchromatic Remote-Sensing Instrument for Stereo Mapping (PRISM), the Advanced Visible and Near Infrared Radiometer type 2 (AVNIR-2), and the Phased Array type L-band Synthetic Aperture Radar (PALSAR). The area of study is located in a small village named Sykies near to the city of Andritsena in Western Peloponnese. The area suffered during the last years from enormous fires. As a result many landslides have been recorded. One of the latest Landslides has been recorded on January 2009 as a consequence of heavy rains. That landslide was mapped in situ using differential GPS. The possibility of detecting and mapping the specific landslide using ALOS data is examined in this study and the results are presented. Thirty ALOS radar images within a period of three years, two ALOS Prism data sets and two ALOS AVNIR collected over the same area within a year were used.
Basin and local scale detection of ground subsidence through persistent scatterer interferometry: The Anthemountas Basin (Northern Greece) case study.
Authors: Raspini F. , Loupasakis C. , Rozos D. , Moretti S.
Published: January 2017

In the framework of the Terrafirma Extension project, a study has been established for ground motion detection and mapping in the Anthemountas basin (Central Macedonia). Terrafirma promotes the exploitation of Persistent Scatterer Interferometry (PSI) techniques, a remote sensing technology based on multi-temporal satellite Synthetic Aperture Radar (SAR) imagery. The potential of SAR interferometry has been exploited through the innovative Wide Area Mapping approach, recently implemented by the German Space Agency (DLR) and aimed at measuring land deformation over large areas. Interferometric results from 1995-2001 by ERS1/2 satellites has been analyzed at a basin scale to investigate spatial patterns of land motion in the wider Anthemountas plain, where subsidence phenomena related to intense groundwater extraction is clearly manifested.  The   WAP results turned out to be a valuable tool for the characterization at local scale of the land subsidence in the runaways area of the Macedonia airport and in the village of Perea, affected in 2005-2006 by a series of tensile ground ruptures due to excessive groundwater withdrawal. Besides the study of the  phenomenon, this work confirmed the suitability of PSI techniques to detect and measure surface displacements with millimetre accuracy and also to reconstruct the deformations history of the investigated areas through displacement time series analysis.
Remote sensing techniques as a tool for detecting water outflows. The case study of Cephalonia Island. p.1519
Authors: Stefouli M. , Vasileiou E. , Charou E. , Stathopoulos N. , Perrakis A. , Giampouras P.
Published: January 2017

The amount of water flowing into the seas and oceans has slowly but steadily increased in recent years, signifying a possible speeding up of the water cycle due to climate change. The detection of the water outflows and the exploitation of them are very important to the rational water management. Remote sensing techniques has been  proven  a  valuable  tool  for  the  detection  and  identification  of  submarine groundwater discharge-SGD (Submarine Groundwater Discharge). In this study   the island of Cephalonia in Ionian sea, Greece is considered as a case study. A  6 Km  sea   buffer zone around the island is studied using Landsat images. Submarine groundwater discharge has been detected through remote sensing methods and the results have been combined with the tectonism and hydrogeological conditions of the island. A quantitative analysis of temperature in the    buffer zone was   carried out. The   sea thermal anomalies in the same zone were also investigated.
Palladium and platinum in hydrothermal systems: The case of porphyry-Cu systems and sulfides associated with ophiolite complexes.
Authors: Eliopoulos D.G. , Economou-Eliopoulos M.
Published: January 2017

Data on the Pt and Pd contents in sea-floor massive sulfides related to ophiolite complexes indicated elevated Pt contents, up to 1 wt % Pt in sulfides from East Pacific Rise, up to 1000 ppb Pd or Pt in sulfides from mid-Atlantic Ridge and the Pindos ophiolite complex (Greece). Recently, elevated levels of Pd and Pt, have been reported from mineralization associated with alkaline porphyry deposits, such as the Skouries porphyry deposit (Greece), Cordillera of British Columbia, Elatsite (Bulgaria), Santo Tomas II in the Philippines and elsewhere. Current state of knowledge on the solubility of platinum-group elements was applied on hydrothermal systems related to the mineralization in ophiolite complexes and porphyry Cu-Mo-Au±Pd±Pt deposits toward a better understanding of the PGE mineralization in hydrothermal systems and the unknown Pd and Pt potential in porphyry-Cu systems. Ore reserves, mineralogical and geochemical ore data for porphyry-Cu systems are considered to be an encouraging factor for the presence of precious metals. In particular, the occurrence of merenskyite (palladium telluride) associated with chalcopyrite, coupled with the experimental data indicate that porphyry systems are capable to transport significant amounts of Pd and Pt.
Quantitative determination of mineral matter in lignite by X-RAY spectrometry, using the Compton effect.
Authors: Perdikatsis V.
Published: January 2017

For the evaluation of lignite quality, apart from the calorific value, it is necessary to determine the mineral phases, which are deposited simultaneously with the organic matter during the formation of peat or formed epigenetically during the coalification stages. The mineral matter content is usually expressed as ash, after the combustion of lignite, and its determination is a quite time consuming process. In this paper an attempt is made for a fast and easy quantitative determination of mineral matter in lignite samples with unknown concentrations, with the use of an X-ray spectrometer and in particular the Compton effect of the X-ray tube. The intensity of the Compton peak is a function of the mass absorption coefficient of the lignite sample, which in turn depends on the type and amount of the mineral matter contained. Using this property of the Compton Effect, the percentage of mineral matter of lignite was determined. The method was verified by analyzing lignites with known concentrations of inorganic mater. The results of this study showed, that the mineral matter content can be determined, by the proposed method, fast and accurately without lignite combustion.
Rockfalls: influence of rock hardness on the trajectory of falling rock blocks.
Authors: Asteriou P. , Saroglou H. , Tsiambaos G.
Published: January 2017

Rockfalls pose significant hazard on human activities and infrastructure. The assessment of rockfall risk along roads and on other human activities is of great importance. Geological assessment can predict the outbreak of such events; explain the mechanism of occurrence and assist in the effective design of protection measures. The trajectory of a falling block is significantly affected by its response to the impact with the slope, since block kinematics properties mainly depend on the coefficient of restitution values. In this research a laboratory procedure based on the free fall of small blocks of different rock types and artificial materials was implemented in order to address the effect of their mechanical properties on the coefficient of restitution values. From the evaluation of testing results a correlation between kinematic coefficient of restitution and Schmidt rock hardness is proposed.
Safety assessment and remedial measures design for an extensive rockfall along the main road to Kimi, East Euboea, Greece
Authors: Loupasakis C. , Lalos G. , Rozos D.
Published: January 2017

The steep morphology and the intense tectonic fragmentation of the mountainous areas of Greece combined with the dense road network create conditions favorable for the manifestation of rockfalls. Numerous events are recorded through the years, some of them causing injuries or even worse loss of lifes. The rockfall that took place along the Kimi – Platana – Paralia provincial road on August 2008, was studied in detail and is presented in the current paper. The rock detachment area was defined 200m away and at an altitude of 140m (130m higher from the road), while the rock pieces detached had a maximum volume of 4m3. The final consequences were two crashed cars and a heavily injured civilian. The causual factors as well as the proposed remedial measures, estimated by the use of RocFall by Rockscience Ltd., are described in detail. Furthermore, the temporary remedial measures applied by contractors are evaluated, pointing their defects.
CSD correction as a tool for estimating 3d block size distribution.
Authors: Rusi M. , Hoxha P.
Published: January 2017

For the headrace Moglicë-Grabovë, part of Devoll Hydropower Project in Albania, two different techniques of tunnelling are planned: DS TBM for the Flysch series starting in Moglicë and Drill & Blast for the Ophiolite section, starting in Grabovë. A major question concerning the tunnelling seems to find the point where DS-TBM excavation from the Moglicë side should stop to “wait” for the Drill&Blast excavation from the Shemsit access tunnel side. Assumed that the so called “block in matrix” rock mass is very unfavourable, respectively disqualifying for TBM excavation. These mixtures of hard blocks embedded in weaker and finer matrix that are very difficult to characterize, frequently challenge the engineering geologists with the characterization, design and construction problems associated with them. Evaluating Block Size Distribution in the BiM rock zone of this project area has been only the first step in characterizing all the geological and geotechnical parameters of the rock mass which will influence a decision that has major economic consequences. CSDCorrections 1.39 is the program used to convert the two dimensional data gathered from thin sections, outcrops, photographs etc. to true three dimensional crystal size distributions (CSD).
A re-assessesment of the shallow paleomagnetic inclinations of the Western Cyclades, Greece
Authors: Bradley K.E. , Vassilakis E. , Weiss B.P. , Royden L.H.
Published: January 2017

Consistently shallow paleomagnetic inclinations measured in Early to Middle Miocene lacustrine and dacitic volcanic rocks of the Kymi-Aliveri basin have been cited as evidence for an anomalous geomagnetic field geometry or northward drift of the Aegean Sea region. We present new paleomagnetic data from the lacustrine beds that are instead not anomalously shallow and consistent with deposition near their present-day latitude as predicted by global apparent polar wander paths. Anomalously shallow inclinations and easterly declinations reported from the Oxylithos volcanics are an artifact of an inappropriate tilt correction. The excessively shallow paleomagnetic inclinations reported from the deformed Middle Miocene plutons on Mykonos and Naxos are consistent with reorientation of an original thermoremanent magnetization acquired during cooling below 580°C by subsequent ductile strain at temperatures of 400-500°C. Magnetization overprints observed in these rocks may reflect the acquisition of a stable chemical remanent magnetization lying parallel to the transposed high-temperature magnetization as the result of low-temperature (<350°C) maghemitization. We therefore find no convincing evidence for an anomalous Middle Miocene field geometry, northward drift of the Aegean, or back-tilting of the low-angle normal faults that constitute the North Cycladic Detachment System.
Characterization of a new laboratory ceramic product from industrial by-products as raw materials and caustic magnesia as additive
Authors: Skliros V. , Lampropoulou P. G. , Tsikouras B. , Hatzipanagiotou K. , Christogerou A. , Angelopoulos G. N.
Published: January 2017

A new ceramic product is introduced by mixing caustic magnesia, produced in the laboratory from pure, high quality magnesite, and natural silt. Bottom ash and red mud, two well known environmentally hazardous industrial by-products, were also added in the mixture. After testing various recipes we concluded that addition of 5% caustic magnesia in the ceramic product greatly enhances its performance. Increase bonding of the ceramic microstructure is attributed to the formation of periclase necks, the concurrent formation of small quantities of amorphous material and the homogeneously distributed pores during the experimental firing of the mixture. Combined X-ray Diffractometry and Scanning Electron Microscopy of the ceramic product revealed the occurrence of unreactive phases, inherited by the raw materials, as well as newly-formed albite and magnesioferrite. Our results show that utilization of by-products may be important and environmental friendly materials in producing low cost ceramic building materials.
Environmental pressures to the water resources in the wider area of Roditsa, in Sperchios River Delta of Eastern Central Greece
Authors: Katsifa M. , Koumantakis I. , Stathopoulos N. , Vasileiou E.
Published: January 2017

The aim of this paper is to describe the ``pressures`` in the water environment, focusing in the water quality regime. The study area is located in the east – southeast of Lamia, southwest of the mountain Orthris, up to Maliakos gulf. The groundwater quality, regarding its irrigative use, ranges between good and moderate. The main sources of water deterioration are agricultural activities and sea intrusion near the coastline. Similar conditions are observed in the surface water of the area. Concerning the qualitative suitability of the water for irrigation, in the majority of the area’s surface water samples that were tested, there is a fluctuation between good and moderate. The hydrological data from the karstic springs were evaluated and several estimations were made, for describing their hydrodynamic regime. Certain proposals are suggested for the sustainable management of the water resources, concerning the proper use of the karstic springs and surface water, the reuse of sewage water, the exploitation of groundwater and a number of further actions that should be taken under consideration based on the European legislation
emoval of malachite green dye from aqueous solutions by diasporic Greek raw bauxite
Authors: Georgiadis I.K. , Papadopoulos A. , Filippidis A. , Godelitsas A. , Tsirambides A. , Vogiatzis D.
Published: January 2017

Raw bauxite from Klisoura mine (Prefecture of Fokida, Greece) containing 72 wt.% diaspore, 16 wt.% hematite, 6 wt.% quartz, 4 wt.% anatase and 2 wt.% calcite, has been used for the removal of malachite green dye from aqueous solutions. The batch type experiments were conducted with 10 ml of solution, at pH = pHZPC = 6.7 and contact time 1 h. The initial concentration of malachite green dye was 10 mg/l, the bauxite quantity was 0.02 g, 0.04 g, 0.06 g, 0.1 g and 0.2 g. The highest adsorption capacity achieved was 4.5 mg/g (90% removal) using 0.02 g bauxite. The removal capacity of raw bauxite is comparable to other non-conventional adsorbents, such as neem sawdust, sugar cane dust and cane root carbon.
Environmental monitoring of soil pollution in urban areas (a case study from Heraklion city, Central Crete, Greece)
Authors: Kokinou E. , Belonaki C. , Sakadakis D. , Sakadaki K.
Published: January 2017

Main scope of the present study is to combine topographic and geological data, magnetic susceptibility and thermomagnetic analysis in order to investigate the magnetic properties of the near surface soils in possible polluted urban areas. For this purpose, a power plant with a dense traffic net around it, located in the NW section of Heraklion city in Crete was selected to be the study area. Surface soil samples have been collected from the area under investigation and they were analyzed in order to estimate the spatial distribution of the magnetic susceptibility. Loci of high values of the magnetic susceptibility within the study area gave rise to further proceed to thermomagnetic analysis of the selected samples. GIS techniques were used for mapping the magnetic measurements on the various topographic and geological features of the area. The digital elevation model was created by the digitization of the topographic map contours (1:5000 scale maps). The combination of the above techniques indicate high values of the magnetic susceptibility especially in the northeastern part of the investigated area, possibly related to pollution due to the presence of heavy metals.
ON THE OCCURRENCE OF PRIMITIVE ORBITOIDES SPECIES IN GAVROVO – TRIPOLITZA PLATFORM (MAINALON MOUNTAIN, PELOPONNESUS, GREECE)
Authors: Zambetakis-Lekkas A.
Published: January 2017

Orbitoides genus is considered as a cosmopolitan one, with a worldwide distribution. It characterizes the open shelf sedimentation of late Cretaceous. Therefore, primitive species of the genus have not the same large paleogeographic distribution as the more evolved species. While evolved species of Orbitoides genus are frequently referred in Hellenids, primitive species are reported for the first time in Mainalon Mountain in central Peloponnessus (Zambetakis-Lekkas & Alexopoulos 2007). In this paper primitive Orbitoides species in the above area are studied and discussed. A new species seems to be identified.
A MINERALOGICAL STUDY OF SOME MYCENAEAN SEALS EMPLOYING MOBILE RAMAN MICROSCOPY
Authors: Economou G. , Konstantinidi-Syvridi E. , Kougemitrou I. , Perraki M. , Smith D.C.
Published: January 2017

The National Archaeological Museum in Athens is the largest archaeological museum in Greece, and one of the most important museums in the world, devoted to Ancient Greek art and history. Among other exhibits, it owns a large collection of gemstones some of which were used during prehistoric times (Mycenaean period) as seals. Their shape varies from round to oval, flattish or cylindrical, and they are delicately engraved as intaglios with a variety of depictions (lions, bulls, man, etc). They show a wide range of colours from reddish, brown, to purplish and blue. The six sealstones described here come from the Chamber Tombs of Mycenae (15th-14th cent. BC). Museum exhibit labels recognize them as varieties of quartz such as jasper (NAM 3138), sardonyx (NAM 2316 & 2865), agate (NAM 4928), amazonite (NAM 2863) and gold-mounted carnelian (NAM 6489). Raman Spectroscopic analysis has been carried out with a new MRM (Mobile Raman Microscope) using a Kaiser Holoprobe with a NIR 785nm laser. The Raman spectra acquired from 1s-60s measurements confirmed that, in all six sealstones, quartz was the major mineral species clearly identified by its characteristic peaks. The second most important phase was moganite, a little-known polymorph of quartz. The amber-coloured sealstone (NAM 6489) was confirmed as carnelian, whereas the blue-green amazonite-coloured sealstone (NAM 2863) was not detected as amazonite. Small amounts of haematite were detected in the NAM 2865 & NAM 3138.
ORACLES ON FAULTS: A PROBABLE LOCATION OF A “LOST” ORACLE OF APOLLO NEAR OROVIAI (NORTHERN EUBOEA ISLAND, GREECE) VIEWED IN ITS GEOLOGICAL AND GEOMORPHOLOGICAL CONTEXT
Authors: Mariolakos I. , Nikolopoulos V. , Bantekas I. , Palyvos N.
Published: January 2017

At a newly discovered archaeological site at Aghios Taxiarches in Northern Euboea, two votive inscribed stelae were found in 2001 together with hellenistic pottery next to ancient wall ruins on a steep and high rocky slope. Based on the inscriptions and the geographical location of the site we propose the hypothesis that this is quite probably the spot where the oracle of “Apollo Selinountios” (mentioned by Strabo) would stand in antiquity. The wall ruins of the site are found on a very steep bedrock escarpment of an active fault zone, next to a hanging valley, a high waterfall and a cave. The geomorphological and geological environment of the site is linked directly to the regional geodynamical context of Central Greece, a region of tectonic turmoil throughout the Pleistocene and Holocene, characterised by distinct landscapes produced by the activity of active fault zones, intense seismicity, and in part, volcanism and hydrothermal activity. The geomorphological and geological similarities of the Ag. Taxiarches site with those of the oracle at Delphi, seem to provide further support to the hypothesis that the former site can well be that of an ancient oracle, given the recently established connections between the geological environment at Delphi and Apollo’s oracle there. Definitive verification of our hypothesis can only be obtained by further, detailed archaeological study, whereas geological/geomorphological, geochemical, and geochronological studies would be necessary to clarify the connection that the cave lying next to the wall remains may had with the site’s function.
PALAEOCLIMATIC EVOLUTION IN LOUTRA ARIDEAS CAVE (ALMOPIA SPELEOPARK, MACEDONIA, N. GREECE) BY STABLE ISOTOPIC ANALYSIS OF FOSSIL BEAR BONES AND TEETH
Authors: Zisi N. , Dotsika E. , Tsoukala E. , Giannakopoulos A. , Psomiadis D.
Published: January 2017

Carbon and oxygen stable isotope values (δ13C, δ18O) were obtained from structural carbonate in the bioapatite of bear bones (Ursus ingressus) from Loutra Arideas cave, Almopia Speleopark, Macedonia, N. Greece. Samples of Late Pleistocene bear bones were studied for palaeoclimatic reconstruction of the area. The age range of the fossil layers is from 32ka BP to a maximum of 38ka BP. Generally, the palaeoclimatic proxy is correlated with literature data for climatic variations in the area during Late Pleistocene, whereas dietary behavior was investigated taking into account possible diagenetic processes that may have affected the carbonate matrix of the bones.
THE STUDY OF HEAVY METAL CONCENTRATIONS IN THE RED MUD DEPOSITS AT THE GULF OF CORINTH, USING MULTIVARIATE TECHNIQUES
Authors: Iatrou M. , Papatheodorou G. , Geraga M. , Ferentinos G.
Published: January 2017

Detailed geochemical analyses were performed on the recent sedimentary cover (0 – 15 cm) of the northern flank of the Gulf of Corinth, in western Greece. Man-made metalliferous deposits have been formed on the sea-bed of the Gulf due to the discharge of red mud tailings on the shelf of the Antikyra Bay. The metalliferous deposits have been incorporated in the sedimentation regime of the area. A large grid of sediment samples collected from surface and subsurface red mud deposits and the surrounding natural sediments were analysed for Ag, Al, Cd, Co, Cr, Cu, Fe, Hg, Mg, Mn, Ni, Pb, Si, Ti, V, and Zn concentrations, using Atomic Absorption Spectrometry (AAS). Also, Total Organic Carbon and Calcium Carbonateswere determined. Additionally, correlation between heavy metal concentrations and grain-size data was examined. High heavy metal content values were measured on the floor of the Corinth basin, but the highest heavy metal concentrations occur near the discharge site. In subsurface sediments the heavy metal content (Fe, Ni, Cr, Pb, V, Ag, Co, Al, Cd, Ti, Hg) is significantly higher in the red and reddish mud sediments than in the natural mud sediments. The heavy metal content values decrease from top to base within red-mud deposits. Multivariate statistical methods (Cluster and Facto analysis) were applied on the heavy metal composition and grain-size dataset in order to investigate the inter-element relationships as well as the relationships between the geochemical and sedimentological data.
RESEARCH PROJECTS TO STUDY THE SEA FLOOR AND SUB-BOTTOM SEDIMENTS FUNDED BY THE RECENT EUROPEAN COMMISSION FRAMEWORK PROGRAMS: THE I.G.M.E. PARTICIPATION
Authors: Perissoratis C. , Ioakim Chr.
Published: January 2017

Since 1983, after the participation of Greece in the European Union (EU), IGME has carried out many research projects relevant to earth sciences funded by the European Commission (EC). Especially in the sector of Marine Sciences, a number of projects have been funded in cooperation with other European Institutes. The main targets of the research projects were relevant to the tasks described in the various framework programs (FP) evaluated by the EC, with the tasks changing according to the decision of the European Parliament. The marine projects became gradually larger in terms of the number of the participating Institutes while their target focused more toward to the society needs such as the sustainable energy resources and environmental problems. In this presentation we will describe the research projects relevant to the above targets that were carried out in the last 10 years partly or entirely in the Greek seas.
EVIDENCE OF COLD SEEPING IN PLIO-PLEISTOCENE SEDIMENTS OF SE PELOPONESE: THE FOSSIL CARBONATE CHIMNEYS OF NEAPOLIS REGION
Authors: Sakellariou D. , Fountoulis I. , Lykousis V.
Published: January 2017

Unique, upright standing, chimney-like structures outcropping in (Plio-)Pleistocene sediments of Neapolis region, SE Peloponese are studied thoroughly. The up to 5m high and 3m wide structures, previously interpreted either as “rhizoliths” or hypercalcified giant sponges or fossilized palm trees, display a wide range of morphological types and are composed of hard, several cm thick, carbonate tube. Their orifice is filled up with muddy, sandy or fine conglomerate material, which reflects the sedimentary nature of the surrounding formation, and is penetrated by numerous whitish, mm-thin, carbonate veins. Their formation and spatial occurrence is genetically associated with two intersecting systems of diaclases/fractures, also sealed with carbonate material. We interpret these structures as non-volcanic, fossil, gas chimneys, related to cold seeping (biogenic methane? seeping). The intersecting diaclases have been used as conduits for the upward fluid migration, thus, the gas seeping process must have taken place after the diagenesis of the host sedimentary formations. The impressive outcrops of carbonate gas chimneys in the Neapolis region is the first evident of cold seeping, eventually related with mud volcanism, in the Plio-Pleistocene sedimentary basins of the Hellenic Forearc.
ROCK SLOPE STABILITY PROBLEMS IN NATURAL SIGHTSEEING AREAS - AN EXAMPLE FROM ARVANITIA, NAFPLIO, GREECE
Authors: Loupasakis C. , Galanakis D. , Rozos D.
Published: January 2017

The morphological and geological setting of Greece, the active tectonics and the irrational human activities results to the fact that several natural sightseeing areas or even more, archaeological sites and monuments are located in areas with unfavourable geotechnical conditions. The selection of the proper support and protection measures in most of the cases appear to be very difficult because the applied measures must reassure the minimum aesthetic destruction of the sites. The natural sightseeing area of the Arvanitia walkway, in Nafplio city, is a typical example of site, with extensive human activities, manifesting serious rockfall stability problems. The applied stability analysis pointed out the geotechnical problems and allowed the suggestion of measures for the improvement of the geotechnical behaviour of the rock mass. The measures were planned with respect to the natural beauty and the historical character of the site. Further more, the stability problems located at the slopes of the Kastoria lake walkway are briefly presented. The differences between the two sites revealed the geotechnical problems arising when the landplaning engineers do not take under consideration the engineering geological conditions during the construction of infrastructures.
GEOARCHAEOLOGICAL STUDIES IN URBAN AND SUBURBAN AREAS OF THE ARGOLIS PREFECTURE.
Authors: Zananiri I. , Chiotis E. , Tsombos P. , Hademenos V. , Zervakou A.
Published: January 2017

The application of earth science principles and techniques to the understanding of the archaeo-logical record has become a common practice, while reducing the archaeological risk is possible by clarifying areas of archaeological potential at an early stage. Towards this scope non-invasive geophysical magnetometry surveys were carried out at the city of Argos, successfully locating areas of interest for future excavations. Geoarchaeology studies in the Argolis Prefecture also involved the spatial location of the archaeological protection zones in the city of Nafplio, by combining data from the Official Government Gazettes, aerial photographs and high-resolution satellite images. Another study dealt with the palaeogeographic evolution of the broader Palea Epidavros area; fieldwork comprised electric resistivity soundings, total field magnetic measurements and two research boreholes at different altitudes. Finally, geoarchaeological research was employed to locate rocks suitable for the restoration of the Grave Circle A of Mycenae. The data management and cartographic representation was performed, in all cases, using Geographic Information Systems, where a geographic database was created, including all available information: local geology, topographic features, satellite images and archaeological data.
VISUALIZATION OF DATASETS FROM URBAN GEOLOGY STUDIES USING GOOGLE EARTH: THE CASE STUDY OF NAFPLIO, ARGOLIS PREFECTURE.
Authors: Zananiri I. , Zervakou A. , Tsombos P. , Chiotis E.
Published: January 2017

The systematic use of tools provided in Geographic Information Systems in data mapping makes easy the management of the data acquired from urban geology studies. However, the information derived concern not only the scientific society but also the local authorities and the general public. Thus, a simple way of data dissemination had to be adopted. Online tools, such as those pioneered by Google EarthTM (GE), are changing the way in which scientists and the general public interact with geospatial data in a virtual environment. In the past years since its 2005 introduction, GE has introduced numerous applications, in geosciences as well as in many socio-economic disciplines. I.G.M.E., in the framework of CSF 2000 – 2006 (Operational Program “Competitiveness”), implemented the project called “Collection, codification and documentation of geothematic information for urban and suburban areas in Greece. Pilot studies”. Data management and cartographic representation was performed using G.I.S., where a geographic database was created, including all available information for the studied areas: geology, topography, satellite images, geophysical, geochemical, geotechnical, hydrogeological and geoarchaeological data. Critical information from the geodatabase concerning the study area of the city of Nafplio, Argolis Prefecture, were imported in Google Earth and stored as a Keywhole Markup Language Zipped file, rendering a 2-D layer in GE directly, to facilitate dissemination.
ARCHAEOMAGNETIC STUDIES IN KILNS FROM N. GREECE
Authors: Aidona E. , Kondopoulou D. , Alexandrou M. , Ioannidis N.
Published: January 2017

Archaeomagnetism combines the magnetic properties of baked materials with Archaeology. The archaeomagnetic method can be applied to any kind of permanent - in situ or displaced- burnt structures, such as kilns, ovens, hearths, burnt floors, tiles, bricks and pottery fragments, the latter for intensity measurements only. In this study we present the latest archaeomagnetic results from archaeological sites which are distributed in N. Greece (Polymylos, Sani, Thesssaloniki). The Natural Remanent Magnetization (NRM) and the magnetic susceptibility of the samples have been initially measured. The samples have been subjected to magnetic cleaning (AF and Thermal demagnetizations) and this procedure revealed the characteristic component of the ancient magnetic field. Rock magnetic experiments such as acquisition of the Isothermal Remanent Magnetization (IRM) and thermomagnetic analysis have been performed in pilot samples in order to identify the main magnetic carriers. Finally the secular variation curves for Greece and the SCHA.DIF.3K model were used in order to date these archaeological structures. This dating improved or modified the estimated archaeological ages.
EVIDENCE FOR INDUCED SEISMICITY FOLLOWING THE 2001 SKYROS MAINSHOCK
Authors: Adamaki A.K. , Tsaklidis G. M. , Papadimitriou E. E. , Karakostas V. G
Published: January 2017

Estimation of the seismicity rate changes caused by a major earthquake is based upon the assumption that the earthquake occurrence can be described by stochastic processes. Three stochastic models are applied to the data, i.e. the homogeneous Poisson model, the non-homogeneous Poisson model with two different rate functions, and the Autoregressive model AR(2). The two latter models seem to be adequate to properly simulate the earthquake production in a given area. The identification of the model which best fits the data, enables the estimations of the seismicity rate changes and the numbers of the earthquakes following a specific main shock.
ACTIVE SEISMOTECTONIC STRUCTURES IN THE AREA OF CHIOS ISLAND, NORTH AEGEAN SEA, REVEALED FROM MICROSEISMICITY AND FAULT PLANE SOLUTIONS
Authors: Karakostas V. G. , Papadimitriou E. E. , Tranos M. D. , Papazachos C. B.
Published: January 2017

Data from a digital seismological network operating during April–July 2002 were used for the microseismicity study of the area around Chios Island (East Aegean Sea, Greece). Numerous microearthquakes were detected and more than 950 well–located hypocenters were obtained along with 96 reliably determined focal mechanisms. The epicentral distribution and focal mechanisms of several earthquakes revealed that the NE–SW striking dextral strike–slip faults dominate in the study area as is the dominant pattern in North Aegean Sea. An earthquake swarm near Psara Island and a cluster offshore the west coast of Chios Island are associated with NW–SE trending left–lateral strike–slip faults, orthogonal to the dextral ones. Near the west coast of the Island the microseismicity evidences that oblique faulting dominates, whereas onshore and offshore the North Chios Island, clusters of events manifest the activation of either E–W or N–S striking normal faults. This complex deformation pattern is the manifestation of the dextral strike–slip faulting termination against conjugate sinistral ones, the transition from strike–slip to normal through the oblique faulting, as well as the activation of biaxial normal faulting in places.
Σύγκριση και διακαλλιτεχνικές προσεγγίσεις στη Συγκριτική Φιλολογία
Authors: Αγγελάτος Δημήτρης
Published: January 2017

Δεν διατίθεται περίληψη
Το περιηγητικό ρεύμα στον 19ο αιώνα. Ένας πολιτισμικός διάλογος ή ένας διάλογος πολιτισμών
Authors: Βιγγοπούλου Ιόλη
Published: January 2017

Δεν διατίθεται περίληψη.
Λόγος περί μεθόδου: Για την υπέρβαση της ιστοριογραφίας και την ανάδειξη του συγκριτισμού ως μεθόδου ανάλυσης του θεατρικού φαινομένου
Authors: Γραμματάς Θόδωρος
Published: January 2017

Δεν διατίθεται περίληψη.
Comparative Literature. Issues and Methods / La Littérature comparée. Questions et méthodes. Editor: Lisa Block de Behar, Montevideo, 2000, σελ. 272.
Authors: Ταμπάκη Άννα
Published: January 2017

Δεν διατίθεται περίληψη.
Η αφηγηματική ειρωνεία στα ιστορικά μυθιστορήματα του Αλέξανδρου Παπαδιαμάντη
Authors: Ροϊλός Παναγιώτης
Published: January 2017

Δεν διατίθεται περίληψη.
Η μετάφραση της Ιφιγένειας του Γκαίτε από τον Ιωάννη Παπαδόπουλο και το πρότυπο της (Ιένα 1818)
Authors: Πούχνερ Βάλτερ
Published: January 2017

Δεν διατίθεται περίληψη.
Ένα γράμμα του Charles Dedeyan για ίδρυση φιλολογικής εταιρείας
Authors: Κριαράς Εμμανουήλ
Published: January 2017

Δεν διατίθεται περίληψη.