bluuebunny/crossref_metadata_2025 huggingface dataset:
Sedimentological Evidence for Cretaceous Reactivation of the Eastern Margin of the Cuddapah Basin
Authors: Lakshminarayana G.
Published: November 2024

The east coast Cretaceous Sedimentary basins namely the Krishna-Godavari Basin (K-G Basin) in north and the Palar Basin in south are located towards the tapering ends of the crescent shaped 'Cuddapah Basin'. Cretaceous stratigraphic succession in ascending order is Raghavapuram and Tirupati formations in the K-G Basin and Sriperambattur and Satyavedu formations in the Palar Basin. The Raghavapuram and Sriperambattur formations consist of mainly shale and siltstone deposited in prodelta/shallow marine environments. Sedimentological studies on sandstone and conglomerate revealed that in the Tirupati Formation coarse clastic detritus was derived from the Archaean crystallines and Proterozoic Cuddapah and Kurnool Groups of rocks by braided streams flowing towards east. Alluvial fans and the associated braided streams originated in the southern part of the 'Cuddapah Basin' were fed by mainly 'Nagri Quartzite' to deposit the bouldery conglomerate, conglomerate and sandstone sequence of the Satyavedu Formation. The Cretaceous sedimentary outcrops located east of 'Cuddapah Basin' i.e. Guntur, Ongole and Nellore areas show evidence for deposition in fluvial and fluviomarine settings. The Early Cretaceous tectonic disturbances coinciding with the break up of India from east Gondwanaland reactivated the eastern margin of the 'Cuddapah Basin' thereby enabling it to supply increased amount of detritus to the coastal sedimentary basins. However, the central part of the 'Cuddapah Basin' and the adjacent shield area located between Lat. 14° and 16° acted as a water divide to the Cretaceous drainage.
Magnesite Mineralisation Along the Chamba Thrust, Himachal Himalaya : Structural Control and Depositional Environment Using Fluid Inclusions
Authors: Singh Keser , Sharma Rajesh
Published: November 2024

The study reports magnesite mineralisation along the Chamba Thrust. The Tethyan rocks occurring south of the Higher Himalaya have translated along the Chamba-Thrust over the Higher Himalayan Crystallines and the Chail Thrust Sheet. Localized occurrences of magnesite along the Chamba Thrust are from Jiuni of Brahmour and Bindrabani of the Pangi valley areas. The fluid inclusion studies of magnesite and dolomite, indicate that the fluid involved in the genesis of magnesite was hot saline in nature at about 200°C to 275°C. The magnesite is formed from the reaction of this fluid with the limestone/dolomite during thrusting.
Geochemistry of Archaean Bimodal Volcanic Rocks of the Sandur Supracrustal Belt, Dharwar Craton, Southern India
Authors: Hanuma Prasad M. , Krishna Rao B. , Vasudev V. N. , Srinivasan R. , Balaram V.
Published: November 2024

In the late Archaean Sandur supracrustal belt of the Dharwar craton, Southem India, bimodal (mafic-felsic) volcanic rocks are encountered in its eastern region (Copper Mountain region). The mafic volcanic rocks are represented by Al-depleted picritic basalt and tholeliitic basalt. Pieritic basalt has a HREE - depleted pattern. Tholeliitic basalt exhibits two types of REE patterns; (a) slightly depleted - to flat - LREE and unfractionated HREE patterns, and (b) LREE - enriched and HREEdepleted patterns. The felsic volcanic rocks are Na-Rhyolites, which show calc-alkaline affinity and LREE - enriched and HREE-depleted chondrite-normalised patterns. Geochemical signatures show that the picritic basalt owes its origin to melting of a mantle diapir at depths around 100 km. The LREE - depleted tholeiites are not genetically related to the picritic basalt. They were derived through high degree partial melting of a depleted shallow mantle source. The internal variations observed in the LREE - depleted tholeiitic suite are due to derivation of magma through different degrees of melting of the same mantle source. REE-based petrogenetic modelling shows that the LREE - depleted and LREE - enriched tholeiites are not related to a common parent magma. The LREE - enriched tholeiites were generated from a mantle source, which has been metasomatized by subduction related melt/fluid phase. REE chemistry shows that the mafic and felsic volcanic rocks, though spatially and temporally associated, are not genetically related. The HREE depleted rhyolites were derived by partial melting of a garnet - amphibole bearing source, possibly a subducting oceanic crust. Feild, geochemical and petrogenetic aspects suggest that the magmatic rocks of the study area evolved in an active plate margin environment.
Mineralogy, Geochemistry and Origin of the Late Archaean Norites from Kalyadi, Hassan District, Karnataka
Authors: Subba Rao D. V. , Charan S. N.
Published: November 2024

A lense shaped gabbro-norite pluton emplaced into the Archaean migmatitic Peninsular gneiss and intruded in turn by 2.6 Ga Banavar granite is exposed in the vicinity of Kalyadi, Hassan district, Karnataka. The norite is metamorphosed to upper greenschist-lower amphibolite facies. The parental magma of this suite is noritic (high Mg and Si rich) and may have been derived from an enriched mantIe source at higher degrees of partial melting.
Preliminary Geochemistry and Emplacement Mechanism of Mafic Dykes of Anantapur Area, Andhra Pradesh
Authors: Sarma K. J.
Published: November 2024

The granite - gneiss terrain of Dharwar Craton in Anantapur area of Andhra Pradesh is intruded by mafic dolerite dykes. These dykes are quartz or olivine-normative sub-alkalic tholeiites. Their Mg numbers range between 0.34 and 0.70 with low Ni (50-150 ppm), Cr(50-337 ppm) and Co( 41-70 ppm), indicating some degree of fractionation. The REE abundances show LREE - enriched patterns (La/YbN - 2.7 to 5.5). These dykes appear to be genetically related and were derived from a single magma.
Drainage of North Gujarat: Present and Past
Authors: Sridhar V. , Merh S. S. , Chamyal L. S.
Published: November 2024

The area bound by the rivers Sabarmati and Luni forming a part of North Gujarat and Southwest Rajasthan alluvial plains has preserved in its sediments and landscape various changes which have occurred in the drainage systems during the Upper Quaternary times. The present day drainage mainly cuts across the material deposited by a set of older rivers which now stand disrupted. The present day rivers are observed to have been superimposed over older river channels and dominantly follow numerous tectonic lineaments and faults of a later date. The new channels reveal and have preserved relicts of the earlier fluvial system. Geomorphic and drainage studies reveal existence of two ancient major river systems, the remnants of which are now represented by the Banas and Rupen rivers. The Banas, along with its major tributary Sipu is the sole survivor of the older fluvial system. whereas Rupen has been partially destroyed.
Geology of a Tantalite Pegmatite from Belangi, Surguja District, Madhya Pradesh, India
Authors: Singh Yamuna , Sharma D. S.
Published: November 2024

The tantalite pegmatite from Belangi is zoned and comprises a quartz core, blocky microcline perthite, intermediate zone, wall and border zones of contrasting composition. Tantalite occurs as blocks, and in massive, radiating and finely fragmented forms. It is randomly distributed in pockets, mostly close to quartz core. The pegmatite is potassic. Presence of successive zones of contrasting composition and absence of mineral replacements, with a high value of triclinicity (0.95) for microcline perthite indicate that the pegmatite was fonned by fractional crystallisation in a closed system. Columbite-tantalite from the pegmatite has very low Nb/Ta ratio (0.38 - 0.52). The pegmatite has yielded beryl and ruby variety of muscovite of marketable grade, besides tantalite.
Sequence Stratigraphic Analysis of Pre-Tertiary Succession in Ganga Basin
Authors: Singh A. K. , Singh J. N.
Published: November 2024

The paper defines the Pre-Tertiary stratigraphy of the Ganga Basin which is concealed beneath the thick cover of Cenozoic sediments. The sub-surface structural configuration is characterised by development of four major depressions, separated by transverse uplifts. Ganga Basin represents two main stages of geological evolution: a pre-collisional (Pre-Tertiary) stage consisting mainly of Proterozoic and Gondwana sediments, and a post-collisional (Tertiary) stage representing the Siwalik molasse. The Pre-Tertiary succession is classified into four mega sequences; three of these representing Precambrian sediments, comprising of Aravalli, Bijawar, Delhi and Vindhyan systems and one megasequence corresponding to Gondwana system in the Pumea Depression.
A 2000-Year Palaeoflood Record from Sakarghat on Narmada, Central India
Authors: Kale Vishwas S. , Mishra Sheila , Baker Victor R.
Published: November 2024

A continuous record of the largest Narmada floods over the last 2000 years was obtained from Sakarghat, on the Narmada River from a study of slackwater flood deposits. Two sequences of extreme floods date between ca. 400 and 1000 AD and post-1900 AD. The period, 400-1000 AD representing a period of less frequent but more extreme floods, has been documented in the archaeological record as one of decline of human settlements.
Trace Fossil Assemblage in the Lower Siwalik Suhgroup of Jammu Region, J & K State
Authors: Singh B. P. , Sudan C. S.
Published: November 2024

Trace fossils are found in the lower Siwalik rocks at Mansar and Jhajjar Kotli. The trace fossils are identified as Thalassinoides and Imbrichnus. It is interpreted that these fossils were developed in flood plains.
Basement Configuration in Eastern part of Vindhyan Basin Derived from Aeromagnetics and its Significance in Oil Exploration
Authors: Atchuta Rao D.
Published: November 2024

The basement configuration of the eastern part of the Proterozoic Vindhyan basin has been deduced by re-processing of the aeromagnetic data. The depths to the magnetic basement vary from 2 to 6 km. The basement in this part appears to consist of basement 'highs' (culminations) and 'lows' (depressions) elongated in a general ENE-WSW to EW direction. This configuration has divided the eastern Vindhyan basin into sub-basins. The large thickness of sediments in the sub-basins may be of interest in exploration for oil industry.
Rb-Sr Ages of Lamprophyre Dykes from Schirmacher Oasis, Queen Maud Land, East Antarctica
Authors: Dayal A. M. , Hussain S. M.
Published: November 2024

Lamprophyre dykes intrude the late Proterozoic metamorphic terrain of Schimucher Oasis, Queen Maud Land, East Antarctica. Rb-Sr whole-rock/mineral isochron ages of two lamprophyre dykes are 455 ± 12 Ma (Sr1 = 0.70886 ± 5) and 458 ± 6 Ma (Sr1 = 0.71388 ± 98). This lamprophyre dyke activity of Schirmacher Oasis, may be interprete4 as a manifestation of post orogenic alkaline magmatism related to the Ross orogeny of the Transantarctic mountains.
Geochemical Characteristics of Post-Magmatic Alteration and Thngsten Mineralisation Associated with Balda Granite, District Sirohi, Rajasthan
Authors: Singh Santosh K. , Singh Satyendra
Published: November 2024

Balda leucogranite is characterised by high B, F, Li, Rb, W, Sn Nb content & Rb/Sr ratio and low Sr, Ba content & Ba/Rb ratio. In the case of altered and mineralised leucogranite geochemical data indicates variable B, F, Li, Rb, W, Sn, Nb contents and Rb/Sr & Ba/Rb ratios, differing significantly from those of fresh rocks. The Rb/Sr and Ba/Rb ratios as well as B, F, Li and Rb contents are the guiding characteristics of the granitic rocks which have undergone postmagmatic alteration and mineralisation. and they provide valuable clue for searching tungsten mineralisation in this area.
Occurrence of Gold and Silver in Khetri-Kolihan Copper Ores, Rajasthan, India
Authors: Krishna Rao N. , Sunilkumar T. S. , Narasimhan D.
Published: November 2024

Native gold, etectrum with a wide spectrum of compositional variations between gold and silver, and native silver are identified based on ore microscopic and scanning electron microscopic studies in the copper ores of Khetri-Kolihan, Rajasthan and probable mode of origin is discussed.
Depositional Framework of the Sandy Mid-Fan Complexes of the Proterozoic Chaibasa Formation, E.Singhbhum, Bihar
Authors: Das Subhasish
Published: November 2024

The Proterozoic Chaibasa Formation belonging to the Singhbhum Group was deposited in small overlapping submarine fans along the eastern cratonic margin of an unstable foreland trough during the early phase of the Singhbhum Orogeny. The following features suggest deposition within the mid-fan complex: (I) a relatively high proportion of coarse, massive psammitic layers with small proportion of pelitic layers and classic graded sandstones; (2) the presence of shallow sand-filled channels; (3) the frequent associations of olistostromes; (4) association of thick coarse sandstone with thin layers of fine sandstone separated by thick shale units; (5) the presence of both positive and negative cycles in the stratigraphic record.

Sandstone bodies characteristic of the unchanneled fan lobes, represent deposition associated with basinward progradation of the lobe complex. Accumulation of a thick siltstone on top of the coarse sandstone facies during the active progradational phase is related to a channel cutoff in the upfan region. In contrast, the sandstone bodies present in the channel show an overall graded nature, lack thick siltstone horizon, contain erosional structures, and a higher percentage of positive cycles. The development of the submarine fan was related to external and internal factors, that is, the flow velocity, the rate of sediment supply coupled with channel migration, frequency of major storms or earthquakes to initiate submarine gravity flows. This development of alternating graded sandstone units and siltstone blankets may be a more useful criterion (than sedimentary structures) for the recognition of ancient mid-fan lobe sequences.
Petrography and Depositional Environment of the U-Mineralised Phosphatic Siliceous Dolostone of Vempalle Formation in the Cuddapah Basin, India
Authors: Roy Minati , Dhana Raju R.
Published: November 2024

The phosphatic siliceous dolostone (PSD) predominantly comprises ferroan dolomite that occurs as (a) micritic mosaic within the groundmass, intraclasts, peloids and ooids; (b) fibrous dolomite coating (a); and (c) clear dolomite filling cavities, and is secondary in nature formed due to dolomitisation of precursor high-Mg calcite. Stratigraphic position, sedimentary structures, structures of dolomite, process of dolomitisation and association with collophane and silicate clasts indicate a shallow marine intertidal depositional environment for PSD.
A New Method of Estimating Denudation Rates of the High Himalaya Based on Metamorrphic Index Minerals in the Siwalik Molasse
Authors: Sorkhabi Rasoul B. , Arita Kazunori
Published: November 2024

The erosion record of the high-grade metamorphic complex of the Himalaya is preserved in the Siwalik foreland molasse. Here we propose a new method for estimation of average denudation rates in the High Himalaya during the Miocene based on the first appearance of kyanite in the Middle Siwaliks (beginning at ~11 Ma) and of sillimanite in the Upper Siwaliks (at ~5 Ma) and from ahe fact that these metamorphic index minerals were formed at depths of 21-24 km(thermobarometric data) during the main Himalayan metamorphic event at ~23 Ma (geochronologic data).
Mineralogical and Petrochemical Studies of the Lamprophyres around Chhaktalao Area, Madhya Pradesh
Authors: Hari K. R.
Published: November 2024

Three lamprophyre dykes with E-W trend which cut across alkali olivine basaltic rocks and their differentiates are noticeable in the vicinity of Chhaktalao area. Clinopyroxene and olivine phenocrysts are set in a matrix of clinopyroxene, plagioclase, biotite, apatite, spinel, magnetite/ titanomagnetite, ilmenite and calcite. On the basis of Na2O and K2O percentages, these rocks are classified as alkaline lamprophyre (camptonite) and calc-alkaline lamprophyre (kersantite). Clinopyroxene phenocrysts in both the lamprophyres are of augitic composition; whereas few grains and bleb like structure in the groundmass are of salite composition. Fo% of olivine varies from 83.4 to 88.3. Both the rocks are nepheline normative. The camptonite have lower normative orthoclase, Na2O+ K2O, K2O/Na2O, S REE and Ce/Yb values than that of kersantite. These rocks do not carry any primary magma signature as they have low Mg' [Mg/(Mg + 0.9Fe) atomic], Ni, Cr, and Ni/MgO values. High alkali, REE, Ba, Sr contents in these lamprophyres indicate that source region got metasomatically enriched in these elements.
Recent Benthic Foraminiferal Genera from Pulicat Lake, East Coast of India: An Apprisal Using Factor Analysis
Authors: Jayaraju N. , Srinivas K. , Reddi K. R. , Suryakumar I.
Published: November 2024

A total variance explaining 86% of the matrix is consituted by six factors where Florilus-Asterorotalia assemblage (46%) emerged significant. Asterorotalia-Florilus assemblage is more abundant (37%) in monsoon. These faunal assemblages were related to environmental ingredients Viz., texture of sediment substrate, the amount of locked-up organic matter content and bottom water salinity. The cross plot of first two factors for both seasons revealed the common genera found to occur in descending order i.e., Asterorotalia, Florilus, Elphidium and Ammobaculites which are confined especially in normal marine action of sea oscillations are noticed.
Lohawat Meteorite-A Howardite
Authors: Chattopadhyay B. , Rajawat R. S. , Mathur K. N. , Gajanand  , Dwivedi G. L.
Published: November 2024

Lohawat Meteorite is a differentiated silicate rich aerolite of the high calcium howardite type. Unquestionable magmatic signature is stamped by ophitic, intersertal and spinifex texture, corona and vesicular structures, as seen in lithic fragment clasts. The simple mineralogy has been discussed in terms of the system olivine-clinopyroxene-plagioclase-silica. Varietal texture and compositional features suggest that the meteorite has sampled terrains of distinctly different genetic history.
Structural Architecture of the Vindhyan Strata in Son Valley: Implications for Basin Tectonics
Authors: Chakraborty Chandan , Karmakar Subrata
Published: November 2024

Detailed field studies on the regional structure of the Vindhyan strata in Son valley reveal that the Vindhyan strata define a broad syncline with a gently plunging (westerly), mildly curved fold axis (average trend ENE-WSW) and a southerly inclined axial plane. The southern limb of the broad syncline shows several smaller folds which are conspicuously absent in the gently dipping, homoclinal, northern limb. The mesoscopic folds also conform to the regional structural pattern. Progressive deformation of horizontal strata under asymmetric compression associated with a vertical shear displacement has been simulated with the help of a computer software. The computer-generated structural pattern is remarkably similar to the pattern revealed from field studies indicating that the structural pattern of the Vindhyan strata is the consequence of asymmetric compression with the northerly directed force far exceeding the magnitude of the southerly directed force.

Absence of any northerly directed compressional movement in the Indian peninsula in post-Vindhyan period suggests that the deformation of the Vindhyan had been syn-Vindhyan, perhaps associated with the Satpura orogeny. This leads to the deduction that the origin and evolution of the Vindhyan basin was related to flexural subsidence associated with repeated thrust loading in the south.
Cloudiness in Zircons - A Chemical and Morphological Study
Authors: Gupta L. B. , Meler G. , Johannes W.
Published: November 2024

Electron microprobe and infrared spectroscopic studies show that the clouded areas in zircons contain additional Fe2O3, CaO, MgO, Al2O3 and water than those of the clear areas. IR spectroscopic analysis indicates that the clouded portions have both molecular H2O and OH molecule in similar proportions. Total amount of water in the clouded portions is of the order of 8% by weight. There is a direct relationship between water+secondary components and cloudiness of the zircons. The data suggest that F2O3, CaO, MgO and Al2O3 dissolved in water got incorporated into the crystal structure of zircon and replaced ZrO2 and SiO2 simultaneously.
Dasycladacean Algae from Paleocene to Oligocene Rocks of Baratang Island, Andaman, India
Authors: Badve R. M. , Kundal P.
Published: November 2024

The calcareous coarse-grained sandstones occurring both in the Baratang Group (Lower Paleocene to Lower Eocene) and the Port Blair Group (Middle Eocene to Oligocene) yielded a rich dasycladacean algal flora comprising four species namely: Broeckella baratangensis sp. nov., Dissocladella deserta Elliott, Neomeris plagnensis Dellofre and Trinocladus indicus sp. nov. They have Tethyan affinities and indicate shallow marine tropical water having a maximum depth of about 5-6 m below low tide level.
Elemental Distribution in Innershelf Sediments off Coondapur, West Coast of India
Authors: Pandarinath K. , Narayana A. C.
Published: November 2024

The innershelf sediments of Coondapur were studied for Cu, Pb, Zn, Ni, Co, V, Mn, Cr, Fe, Ti, Al, Ca, organic matter composition and magnetic susceptibility to understand their distribution, enrichment and element burial phases in the sediments. Along most of the transects, the sediments of 30m depth have shown more concentrations of Cu, Zn, Ni, Co, Mn, Fe, Ca and organic matter than those of 20 and 10m depth. The comparisons with sediments of uncontaminated natural formations, innershelf sediments of other unpolluted regions and world averages in different geological formations shows that the study area is unpolluted and the data can be used as a base line for future pollution studies. The sequential leaching of elements shows that they are mainly (~60-80% of the total content) associated in detrital clay and heavy minerals followed by (~20-30% of the total) in sulphide phase. The concentrations of all the element (except Mn) in other phases (exchangeable ions, loosely sorbed ions, carbonate constituents and interstitial water) were negligible. Nearly 40% of the total Mn is present in the leachates of EDT A and acetic acid soluble fractions. Mn concentration is almost negligible (6-11 % of the total) in acetic acid-hydroxylamine hydrochloride leachate (oxide phase) and its concentration is considerable (10-30% of the total) in H2O2-ammonium acetate leachate (sulphide phase). These observations suggest that reducing conditions may be prevailing in the innershelf off Coondapur.
Gold Mineralization in the Mahakoshal Greenstone Belt, Central India: A Preliminary Study
Authors: Devarajan M. K. , Hanuma Prasad M. , Keshava Prasad A. V. , Soni M. K.
Published: November 2024

Gold Mineralization in the eastern part of the Late Archaean Mahakoshal Belt is observed in sulphidic chert associated with banded ferruginous chert (BFC) and in quartz-carbonate-sulphide veins and quartz-carbonate veins emplaced into argillites, greywackes, carbonaceous phyllite and BFC. In the western part of the Mahakoshal belt gold mineralization is noticed in quartz-carbonate veins intruded along the lithological contacts between metabasalts and dolomitic limestone, and in quartz veins/quartz porphyry dykes within dolomitic limestone. Bulk of the gold mineralization is associated with quartzcarbonate and quartz-carbonate-sulphide veins, emplaced during the initial phase of deformation of the Mahakoshal Belt.
Grain-Size Frequency Distribution in Ancient Depositional Environment - A Case Study from Lower Gondwana Sediments, Pranhita Godavari Basin, Andhra Pradesh
Authors: Majumdar Pinaki , Ganapathi S.
Published: November 2024

Environmental significance of grain-size frequency distribution of ancient terrigenous deposits has been examined in the light of applicability as one of the tools of environmental analysis. Synthesis of results obtained from grain-size analysis of 71 subsurface samples of Barren Measures Formation in Bellampalli-Chinnur area of Pranhita-Godavari Lower Gondwana basin points to the interplay of various sedimentary dynamics of diverse microenvironments within a broad fluvial system. Formative processes were controlled by availability of different sizes of particles and competency of flow. Channel pattern deduced from the study conform to the model of "mixed load anabranching river pattern." This study reaffirms the reliability of grain-size analysis of sands in interpreting ancient depositional environment.
Flow-Stratigraphy and Geochemical Variants of Bhadrajan Volcanics, Jalore District, Rajasthan: Implications for a Heterogeneous Protolith
Authors: Chittora V. K. , Maheshwari Anil , Coltorti Massimo
Published: November 2024

The Malani volcanics exposed in a curvilinear pattern around Bhadrajan are characterised by the presence of eight flows of rhyolitic to dacitic composition and have chemical characteristics similar to within plate, A-type granitic rocks. The pyroclastic unit present at the base of each flow marks the beginning of next pulse of discharge. The chemistry of Bhadrajan volcanics suggests two distinct rhyolite groups. Group "A" is characterised by high Ca, Al, Na2O/K2O and low Rb, Th, La, Ce and Rb/Sr as compared to group "B" rhyolites. The field and chemical data suggest a heterogeneous nature of protolith for Bhadrajan volcanics. The partial, melting of igneous and siliceous metapelitic protolith could result in "A" and "B" group of rhyolites respectively.
Tectonic Implication of Geochemistry of Gabbronorite-Basic Granulite Suite in the Proterozoic Delhi Supergroup, Rajasthan, India
Authors: Biswal T. K. , Gyani K. C. , Parthasarathy R. , Pant D. R.
Published: November 2024

The granulitic terrain of Proterozoic Delhi Supergroup exposed between Balaram and Mawal in Gujarat carries a suite of plutonic basic intrusive rocks consisting of gabbro, norite and basic granulites. Chronologically the suite is younger than metabasic rocks of north and central Rajasthan and occurs as melt intrusion within the host of pelitic granulites, calc granulites and granite gneisses. The suite ranges in chemical composition from alkaline to tholeiite through calc alkaline with characteristic major elemental distribution. Rare earth element chemistry shows Eu anomaly with LREE and LILE enrichment over HREE and HFSE. On the basis of the above enrichment it is invoked that the rocks are possibly derived from an enriched mantle beneath a subduction zone. Further, the Hf / 3-Th-Ta and Th / Yb-Ta / Yb systematics reflect a compositional match with calc alkaline basalt of present arc setting. These lead to suggest that the gabbro-norite-basic granulite suite signifies continental are magmatism in Delhi Supergroup and the Aravalli mountain had been evolved through continental collision and subduction during upper Proterozoic time.
An Integrated Analysis of Late Proterozoic Lower Vindhyan Sediments for Hydrocarbon Exploration in Western part of Son Valley, Central India
Authors: Das A. K. , Baruah R. M. , Bisht S. S. , Agrawal B.
Published: November 2024

Integration and analysis of all the available geoscientific data in Jabera-Damoh area of Son Valley, Vindhyan Basin have been carried out to evaluate hydrocarbon prospects. Taking lead from the rank exploratory well, time structural mapping over the area with the help of seismic data has established a southeasterly extension of Damoh structure, north of Jabera. The structure is bounded by two major NW-SE trending faults whereas ENE-WSW trending faults are more dominant in Jabera dome, in close proximity to the Son-Narmada Lineament. Tectonic inversion has affected Jabera structure mainly from Kajrahat Limestone member of Semri Group onwards. Seismic facies and interval velocity analysis supported by paleocurrent data suggest better development of reservoir facies towards north i.e. in the area around Damoh. Further exploratory efforts should be pursued by exploring Damoh structure and acquiring additional seismic data in the eastern and southwestern Part of this Category III basin.
Palaeomagnetic Studies of Intrusives in the Deccan Trap Around Nandurbar Area, South of Tapti Valley, District Dhule, Maharashtra
Authors: Sethna S. F. , Khateeb Ateeq , Rao D. R. K. , Saraf P. D.
Published: November 2024

The area around Nandurbar consists of compound lava flows (basalts) of Deccan Trap which are intruded by numerous prominent dykes. These dykes are mainly dolerites and some are quite massive and extensive. One major dyke was traced for over 50 km, from north of Dondaicha, westwards as far as Umaj, near the Gujarat - Maharashtra border. Petrochemical studies indicate tholeiitic nature of the magma. There is also an indication of two distinct magma types represented by high Ti and low Ti varieties. These two magma types have intruded as distinct phases with the high Ti dykes being cut across by the low Ti dykes.

The palaeomagnetic work centers around these dykes. In addition a few lava flows were studied for comparison. The older set of dykes show normal magnetization whilst the younger set shows reverse directions. The lava flows are also reversely magnetized. It is thus evident that both the dyke phases are younger than the surrounding lava flows. The older phase of dykes could have been feeders to the younger lava flows of the Deccan Volcanic Province but the younger phase is distinctly post Deccan Trap.
Active Tectonics Astride Katrol Hill Zone, Kachchh, Western India
Authors: Sohoni Parasg S. , Malik Javed N. , Merh S. S. , Karanth R. V.
Published: November 2024

Katrol hills occupy the central Kachchh mainland and belong to an area of active tectonism. This area is one of the few seismically and tectonically active areas outside the Himalayan mountain belt. A longitudinal fault flanks the hills to the north (Katrol Hill Fault Scarp) and morphotectonic analysis along this hill range has confirmed that the area has undergone differential tectonic uplift. Various geomorphological criteria viz., mountain front sinuosity, faceting, facet dissection percentage of 62 fronts of two sub-areas, valley floor to valIey height ratios and concavity indices of the streams flowing due north and south of Katrol hills reflect the amount of influence of tectonic activity during Quaternary times. Pattern of seismicity in the area reveals that all the known earthquakes in this region fall more or less in the Katrol Hill Zone running E-W for about 100 km. The warping of Quaternary rocks further furnishes field evidence of tectonic activity in post Upper Pleistocene times. Morphometric analysis along with seismic pattern and geological evidences indicate that the Katrol Hill Zone continues to be tectonically active.
GenFS Metadata Cleanup Challenge protocol v2
Authors: Timme Ruth , Shumway Martin , Hope Bias Candace , Balkey Maria , Pfefer Tina
Published: November 2024

This protocol provides guidance for submitting bulk BioSample updates to NCBI for the GenFS Metadata Cleanup Challenge exercise. Table of Contents: Timeline/Workflow for the 2024 Metadata Cleanup Challenge Preparing the update file Making corrections and updates within the file Submitting the finalized template Version History: V5: addition of picklists for mandatory OHE attributes V4: addition of a training video V3: minor edits made to correct typos. Addition of final step to email FDA and NCBI when you've completed all the steps.
Aspergilosis: Casuística del Laboratorio Central de Salud Pública-Ministerio de Salud. Asunción, Paraguay. Período 2000 – 2019
Authors:   Laboratorio Central de Salud Pública, Asunción-Paraguay, Aguilar-Fernández Gustavo , Araujo-López Patricia ,   Laboratorio Central de Salud Pública, Asunción-Paraguay, Lird Graciela ,   Hospital de Clínicas, San Lorenzo-Paraguay, Arguello-Velaztiqui Rocío del Carmen ,   Hospital General Pediátrico Acosta Ñu, Blasco-Gavilán Raquel ,   Hospital Regional de Ciudad del Este, Paraguay
Published: November 2024

Introducción: la aspergilosis es una micosis oportunista con gran impacto en pacientes Inmunodeprimidos; los datos disponibles en Paraguay son escasos. Objetivos: caracterizar a los pacientes con diagnóstico de aspergilosis cuyas muestras fueron enviadas a la sección de Micología del Laboratorio Central de Salud Pública en el período 2000-2019. Materiales y métodos: estudio descriptivo y retrospectivo de fichas de pacientes con muestras positivas del género Aspergillus. Resultados: se encontraron 54 pacientes con diagnóstico de aspergilosis: Otomicosis 21 (38,9 %), aspergilosis pulmonar crónica 17 (31,5 %), sinusitis aguda y crónica 5 (9,2 %), aspergilosis invasiva 4 (7,4 %), onicomicosis 3 (5,6 %), aspergilosis broncopulmonar alérgica 2 (3,7 %) y queratitis 2 (3,7 %). Los aislamientos fueron 56: Aspergillus sección Fumigati 26 (46,4 %), A. sección Flavi 15 (26,8 %), A. sección Nigri 13 (23,2 %), A. sección Terrei 1 (1,8 %) y Aspergillus glaucus 1 (1,8 %). Los métodos de diagnóstico microbiológico fueron el examen en fresco, coloraciones, cultivo y serología. Conclusiones: en un período de 20 años varios casos de aspergilosis fueron informados. La otomicosis con predominio en adultos fue la forma de aspergilosis prevalente. En las formas crónicas rino-pulmonares la tuberculosis, tumores, enfermedad obstructiva crónica, fibrosis quísticas y asma fueron los factores predisponentes. La aspergilosis invasiva fue de preferencia en pediatría donde las enfermedades autoimunes y leucemias fueron los factores de riesgo. Aspergillus sección Fumigati fue prevalente del total de aislamientos seguido de Aspergillus sección Flavi y Aspergillus sección Nigri.
Brújulas, coordenadas y mapas. Bitácora de viaje de la innovación curricular de la Escuela Interamericana de Bibliotecología de la Universidad de Antioquia, Colombia
Authors:   Universidad de Antioquia, Giraldo-Giraldo Yicel Nayrobis
Published: November 2024

En este artículo se presentan los avances de la etapa macro del proyecto en curso de innovación curricular de los programas de pregrado de la Escuela Interamericana de Bibliotecología de la Universidad de Antioquia, Colombia. El objetivo general de este proyecto fue construir una propuesta curricular que articule en diferentes dimensiones —epistemológico-teórica, pedagógica, didáctica, curricular y administrativa—, los programas de pregrado de Archivística y Bibliotecología, basados en la participación de sus actores clave, en el análisis del contexto y en el sello institucional. En cuanto a lo metodológico, se recurrió al análisis tensional, procurando hacer una lectura crítica, situada e histórica de los planteamientos teóricos, epistemológicos y de tendencia, con el fin de mantener en equilibrio los requerimientos laborales y sociales respecto a las vocaciones y las tradiciones institucionales. Los avances se presentan en términos de declaraciones que orientan la concepción y acción curricular institucional, y dan cuenta de cuatro cuestiones centrales: las concertaciones de los objetos de estudio articuladores y específicos; la identificación y análisis de las tendencias contemporáneas; la definición de los perfiles de egreso, y la definición del horizonte pedagógico. Al final se plantean algunas recomendaciones para seguir animando el viaje, las cuales se pueden sintetizar en tres asuntos: lograr las articulaciones con las etapas meso y microcurriculares; avanzar en la consolidación de la memoria metodológica del proyecto, y plantear alternativas de carácter administrativo para afrontar los procesos de innovación curricular como acciones permanentes.
GORDON LYALL PAVER (1913–1988) AND 42ND GEOLOGICAL SECTION, SOUTH AFRICAN ENGINEER CORPS: MILITARY GEOLOGY AND GEOPHYSICS IN WORLD WAR II SUPPORTING BRITISH ARMY OPERATIONS: PART 2, NORTH AFRICA, THE MIDDLE EAST AND THE MEDITERRANEAN REGION 1941–1945
Authors: ROSE EDWARD P. F.
Published: November 2024

In September 1940, 42nd Geological Section of the South African Engineer Corps moved from Kenya to an operational base near Cairo in Egypt, continuing to serve within the British Army’s Middle East Command but with leadership by the newly-promoted Major Gordon Lyall Paver (1913–1988). The main part of the Section was employed to support the British 8th Army and operations west of the River Nile, particularly in the Western Desert of Egypt and Libya to Tunisia but also from bases elsewhere in Egypt, with surveys principally by means of electrical earth resistivity: guiding the deployment of Boring Sections Royal Engineers and other units in drilling boreholes from which to abstract potable groundwater. Detachments with similar roles were also employed further east of the Nile, in Sinai, Palestine, Transjordan, Syria and Lebanon, Iraq and Iran. In the Mediterranean region more generally, from 1943 additional deployments included Malta, Sicily and Cyprus, and later Greece. As conflict in North Africa came to an end in the spring of 1943, and so as to promote the use of geology and geophysics (rather than water diviners) as the best means for guiding the choice of sites for boreholes, Paver led teaching of a military training course in geophysical survey methods and the compilation of an authoritative textbook. In early 1945, as conflict in the European Theatre of Operations entered its final months, Paver assisted planning in England for potential deployment of the Section to the Far East and for the development there of an enhanced military geological staff—although hostilities came to an end before these plans materialized. Towards the end of his service, Paver completed for publication the final six of an 11-part series of articles on ‘Water supply in the Middle East campaigns’ that placed much military hydrogeological information on permanent public record. Demobilized in February 1946, Paver returned to a career as a consultant geophysicist, notably promoting ‘resistivity’ surveys to locate ‘underground water’, surveys including significant fieldwork in Egypt, Pakistan and Cyprus that developed his wartime skill base. He had pioneered and mostly directed the use of electrical earth resistivity surveys in support of British military operations during World War II and begun to influence a generation of Royal Engineers through his textbook: re-printed by the United Kingdom’s War Office in April 1945 to facilitate its long-term and wider use. Military honours were duly bestowed upon him for ‘gallant and distinguished services’ during the war.
A 30 Arcsec Resolution VS30 Map for Mainland China Using Refined Topographic Slope-Based Cokriging (SCK) Model
Authors: Zhou Jian , Li Li , Li Xiaojun , Xi Nan , Tian Xin
Published: November 2024

In 2022, we proposed a VS30 proxy model based on the Cokriging method, integrating local VS30 measurements with topographic slope data (SCK model, Zhou et al., 2022). Utilizing this model, a VS30 map for mainland China was developed based on 7797 local boreholes. However, the initial VS30 map was produced with a coarse grid resolution of 360 arcsec and did not comprehensively cover mainland China due to sparse distribution of boreholes in certain areas. In this study, we refined the SCK model by explicitly accounting for the influence of surrounding topographic slopes, incorporating more distant VS30 measurements, and improving the spatial distribution of VS30 measurements used in the model calculation. Tests based on virtual cases were conducted to evaluate the characteristics of the refined SCK model. In addition, 142 VS30 measurements from strong-motion stations in western China were added to enhance spatial coverage and model accuracy in these regions. Employing the refined SCK model and the expanded VS30 data set, a new VS30 map for mainland China was generated. This updated map features a higher grid resolution of 30 arcsec and covers the entirety of mainland China, showing reduced estimation errors and improved continuity. Comparisons with the U.S. Geological Survey Global VS30 Mosaic indicate that the results from the refined SCK model are more reasonable, as evidenced by local topography, VS profiles, lithologic profiles, and geology map, which better capture the impact of local geomorphological differences and climatic conditions on VS30 values.
La formación en habilidades socioemocionales como un potenciador de la satisfacción con la vida en universitarios
Authors: Zamudio Sisa Laura Estefania
Published: November 2024

The present work evaluates the impact of a training strategy based on Emotional Education, on the level of satisfaction with life of university students, an aspect strongly related to personal factors that can influence teaching and learning processes. This was carried out through a study with an empirical-analytical approach, quantitative type, quasi-experimental methodology with pretest-posttest measurements in a final sample of 151 students from undergraduate programs at a university in the department of Boyacá, Colombia. The Satisfaction with Life Scale (SWLS), a sociodemographic sheet and a session evaluation questionnaire were used. The results show a significant improvement in the level of satisfaction with life in three of the elements analyzed with the instrument, particularly a tendency was found for men to present higher scores. The importance of including socio-emotional skills in professional training processes is recognized, considering that they are a contribution to the construction of society and the well-being of the university population.
Treinta años de la Ley General de Educación colombiana: un planteamiento sobre la autonomía estudiantil
Authors: Barragán Moreno Sandra Patricia , Aya Corredor Orlando
Published: November 2024

On February 8, 2024, Colombia celebrated the 30th anniversary of the enactment of the General Education Law, which places autonomy as one of its core principles. The gap between what the law stipulates regarding this principle, and the realities experienced in some classrooms, both in basic and secondary education, as well as in undergraduate and even graduate education, appears to be, at the very least, immense. This discussion aims to reflect on the principle-concept of student autonomy from a philosophical and psycho-pedagogical perspective oriented toward identifying progress in the implementation of the General Education Law in Colombia. Through a qualitative methodology, the concept of autonomy is approached from natural language, philosophy, and legislation. Some successful experiences are described where autonomous student development and teaching and learning processes were achieved. Citizen autonomy is considered the foundation for the strengthening and development of successful, or at least functional, societies, and in this sense, it is shown how, from the experiences and dynamics of the Colombian educational system, the path to forming autonomous individuals is still far from being achieved. It is concluded that rethinking the role of the agents linked to the educational context will be essential if the course is to be changed.
Leveraging Project-Based Learning to Narrow the Educational Divide in Africa: A Computer Science Perspective
Authors:   Department of Computer Science, Faculty of Science, University of Ibadan, Ibadan, Nigeria, Sakpere Aderonke B.
Published: November 2024

In the last two decades, significant attention has been directed towards understanding and promoting Science, Technology, Engineering, and Mathematics (STEM) education and career choices in Western countries, leading to the implementation of various interventions. However, a noticeable gap exists in research and interventions tailored to promoting STEM-based careers in Africa, particularly in countries like Nigeria. This study addresses the gap by proposing a Project-Based Learning (PBL) approach, complemented by design thinking principles, to enhance STEM education in Africa. Scratch, a visual programming language, was used for the prototyping phase of their design thinking process. The study evaluated the impact of problem-based and collaborative learning pedagogies on participants’ problem-solving skills, creativity, career aspirations, and overall interest in technology in the African context. Twenty-six individuals participated in the boot camp, and the assessment was conducted using the Problem-Solving Belief Survey scales. Thematic analysis was applied to these qualitative responses. The results showed that design thinking had a highly positive impact on their problem-solving skills while none strongly disagreed. 77.3% of the participants strongly agreed that using scratch improved their creativity and innovation skills. These findings underline the potential of visual programming languages to engage and empower young learners, making coding and technology more accessible and appealing. This demonstrates that the program improved their digital literacy and confidence in utilizing technology. Furthermore, the findings inform strategies for promoting STEM education in non-western contexts, fostering inclusivity, and breaking gender stereotypes.
Analyzing the Impact of Augmented Reality on Trait Thinking for Electronics Science Learning in Engineering Education
Authors:   Department of Electronics Engineering Education, Faculty of Engineering, Universitas Negeri Padang, Padang, Indonesia, Anwar Muhammad
Published: November 2024

This study explores the impact of Augmented Reality (AR) on trait thinking skills among undergraduate students in Electronics Science education at Universitas Negeri Padang in Indonesia. Utilizing a quantitative approach with an online survey and non-probability sampling, the research investigates how AR usage relates to adaptive and critical thinking abilities, influencing students’ academic performance. The methods used in this study include Structural Equation Modeling (SEM), Network Analysis, and Fuzzy Clustering analysis with detailed variables that include students’ academic performance, learning strategies, information literacy, and trait thinking. The results of this study show that the use of Augmented Reality (AR) significantly enhances students’ critical thinking and adaptability—skills that are crucial for solving complex problems and driving innovation in technical fields. This underscores that AR not only helps in understanding difficult concepts but also directly contributes to the development of essential cognitive skills needed for success in technical disciplines.
Immersive Living Museum with Augmented Reality Technology, integrated Traditional Art and Digital Art to Enhance Historical Knowledge and Learning Attraction
Authors:   Multimedia Technology Program, Faculty of Science and Technology, Rajamangala University of Technology Suvarnabhumi, Thailand, Kucharoenthavorn Atis
Published: November 2024

This experimental research aimed to conduct a bibliometric analysis of museum development, develop an Immersive Living Museum Augmented Reality application integrating traditional and digital art, and study its effects on historical knowledge and learning attraction among users. A sample of 60 tourists visiting the Ayutthaya Historical Study Centre Museum was selected using purposive sampling, with participants divided into an experimental group (n = 30) using the AR application and a control group (n = 30) experiencing the traditional museum. Data were analyzed through a systematic literature review using PRISMA, bibliometric analysis, descriptive statistics, independent t-tests, and simple correlation. The results indicated that the bibliometric analysis emphasized the role of “digital heritage” in connecting cultural heritage, augmented reality, museums, and 3D models, underscoring the significance of digital technology in museum development and cultural preservation. The AR application’s quality was rated as excellent, and the experimental group demonstrated significantly higher historical knowledge and learning attraction than the control group, with a positive correlation between knowledge and learning attraction.