Journal of the Geological Society of India最新文献

{"title":"Insights from the Five-day National Training Programme on “Earth Observation Data Analytics for Disaster Management Focusing on Flood and Drought”","authors":"Surajit Ghosh, Jayesh Mukherjee, Anuva Chowdhury, Kounik De Sarkar, A. Taron, Biplab Biswas, Ashish Ghosh","doi":"10.1007/s12594-023-2539-y","DOIUrl":"https://doi.org/10.1007/s12594-023-2539-y","url":null,"abstract":"","PeriodicalId":50001,"journal":{"name":"Journal of the Geological Society of India","volume":"252 16","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139170709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"GSA Connects 2023: Annual Convention of the Geological Society of America, Pittsburgh, USA","authors":"K. V. Krishnamurthy","doi":"10.1007/s12594-023-2532-5","DOIUrl":"https://doi.org/10.1007/s12594-023-2532-5","url":null,"abstract":"","PeriodicalId":50001,"journal":{"name":"Journal of the Geological Society of India","volume":"23 10","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138954866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Conventional, Renewable Energy Sources and Climate Change Perspective for Energy Security in India","authors":"Pooja Tiwari, D. P. Mishra, Samaya S. Humane, M. F. Quamar, Biswajeet Thakur, S. Humane, Ayushi Mishra, Mitra Rajak","doi":"10.1007/s12594-023-2537-0","DOIUrl":"https://doi.org/10.1007/s12594-023-2537-0","url":null,"abstract":"","PeriodicalId":50001,"journal":{"name":"Journal of the Geological Society of India","volume":"260 ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139170737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Semi-automated Rock Layer Recognition from Borehole Log Data Using Combined Wavelet and Fourier Transform: A Case Study in the KG basin, India","authors":"Bappa Mukherjee, Kalachand Sain","doi":"10.1007/s12594-023-2522-7","DOIUrl":"https://doi.org/10.1007/s12594-023-2522-7","url":null,"abstract":"<p>The accurate identification of rock layer interfaces from wireline logs is one of the crucial issue of geological interpretation as we face difficulties in traditional interpretations due to the presence of various kind of high and low frequencies in the log data. Determination of rock boundaries in shallow marine sediments is very important to understand several issues related to the exploration of conventional and non-conventional hydrocarbons. Presently a combined wavelet and Fourier transform-based approach was demonstrated to discriminate the rock layers from wireline log data in Krishna-Godavari basin, which were acquired during the India National Gas Hydrate Program Expedition 02 (NGHP-Exp.-02). Initially, we selected the suitable mother wavelets and optimum level of decomposition to perform the wavelet transform by computing the error between the original log signal(s) and approximation coefficients (cA’s) of the decomposed signal(s) at several decomposition levels. Subsequently, discrete wavelet transform (DWT) of a particular decomposition level was applied to the log signals to obtain the detail coefficients (cD’s), which contain the high-frequency components of the log signals. Further, these high-frequency components of the log signals were utilized in frequency spectrum-based filtering approaches. This approach was adapted to yield information about the abrupt changes occurring in the log signals across the studied depth interval. The combined application of Fourier and wavelet transforms to shallow marine log data demonstrates that this approach is an efficient tool for delineating rock layer boundaries.</p>","PeriodicalId":50001,"journal":{"name":"Journal of the Geological Society of India","volume":"24 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138819913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Statistical and Geochemical Evaluation of Fluoride-rich Groundwater from North Coastal Part of Odisha","authors":"Utsav Das, Soumya Ranjan Hota, Rosalin Das, Rabindra Nath Hota","doi":"10.1007/s12594-023-2526-3","DOIUrl":"https://doi.org/10.1007/s12594-023-2526-3","url":null,"abstract":"<p>The chemistry of the groundwater of north coastal part of Odisha is primarily controlled by weathering of minerals present in basement rocks superimposed by anthropogenic activities and sea water intrusion. The water is hard and alkaline in nature, but most of the constituent ions excluding F^- are within permissible limits for human consumption. Four factors satisfying over 86% of the total variance and three clusters corresponding to geogenic, alkaline and anthropogenic processes have been identified. Ca²⁺, Mg²⁺, Na⁺, K⁺, F⁻, CO₃²⁻ and HCO₃⁻ are geogenic, contributed by the basement rocks and soils. Cl⁻, SO₄⁻ and NO₃⁻ are anthropogenic, derived from haphazard household waste disposal, overflows of septic tanks, return flow from irrigation, animal wastes, manures, soil conditioners and chemical fertilizers. K⁺ and F⁻ belong to both the categories while Na⁻ and Cl⁻ are contributed by saline intrusion to some extent. The pH, total alkalinity and F⁻ represent alkaline component, while HCO₃⁻ is derived from weathering of minerals and influence of atmospheric CO₂. Change of groundwater types from Ca-HCO₃ (fresh water) → Ca-Mg-Cl → Na-Cl (saline water) as well as increase of total dissolved solids in seaward direction indicates the effect of seawater intrusion in the study area. Sympathetic relationship of F” with total alkalinity, pH and Na⁺ as well as negative correlation with Ca²⁺ suggest the prevalence of alkaline environment that favors dissolution of fluoride minerals of the basement rocks. It is suggested to minimize the anthropogenic activities like haphazard waste disposal and excessive use of agrochemicals, adopt artificial recharge measures, take up regular groundwater quality check and aware the public for proper management of groundwater resource in the study area.</p>","PeriodicalId":50001,"journal":{"name":"Journal of the Geological Society of India","volume":"189 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138820091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Coronene - A Potential Powerful Tool for Reconstructing Ancient Fire Records and Its Significance in a Geological Context","authors":"Ryosuke Saito","doi":"10.1007/s12594-023-2520-9","DOIUrl":"https://doi.org/10.1007/s12594-023-2520-9","url":null,"abstract":"","PeriodicalId":50001,"journal":{"name":"Journal of the Geological Society of India","volume":"101 22","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138954190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Delineation of Saline/Fresh Water Interface and Mapping Groundwater Potential Zones using Spatial Resistivity Models in Bichpuri Block Agra, District UP, India","authors":"Anirudh Singh, Birendra Pratap, S. K. Singh","doi":"10.1007/s12594-023-2529-0","DOIUrl":"https://doi.org/10.1007/s12594-023-2529-0","url":null,"abstract":"<p>Pin-pointing freshwater within saline formations is of utmost importance as filtration and alternate means of public water supply are responsible for high expenditure. Vertical Electrical Sounding (VES) (n=49) was conducted at various locations in the Bichpuri block, Agra district. In this study for VES, the Schlumberger configuration was used. VES data were reconciled with the borehole well log, and drill sample cuttings were utilized to understand sub-surface configuration. Reconciled VES data displayed variation in resistivity layer parameters, i.e., layer thickness &amp; true resistivity of sub-surface. True resistivity spatial models were developed at 25m intervals from the ground surface down to the depth of 150m, based on geo-electric parameters. Resistivity models reveal that freshwater is limited to 55m depth, beyond which groundwater is saline to brackish. The basement was encountered at a depth of 120m and further extended up to 150m. A groundwater potential map was prepared using GIS and divided into 3 categories–good, moderate, and poor. Major habitations of the study area lie in poor groundwater potential zone, which is a cause of concern with the intent on future development. Similar studies can be extended to areas with saline groundwater for mapping freshwater zones.</p>","PeriodicalId":50001,"journal":{"name":"Journal of the Geological Society of India","volume":"37 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138819966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Samudra Manthan 2023: National Oceanography Scholars’ Meet","authors":"Shivani Pathak, Rahul Dwivedi","doi":"10.1007/s12594-023-2536-1","DOIUrl":"https://doi.org/10.1007/s12594-023-2536-1","url":null,"abstract":"","PeriodicalId":50001,"journal":{"name":"Journal of the Geological Society of India","volume":"8 4","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138956603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dr. Mudlappa Jayananda, Recipient of JC Bose National Fellowship","authors":"V. N. Vasudev","doi":"10.1007/s12594-023-2533-4","DOIUrl":"https://doi.org/10.1007/s12594-023-2533-4","url":null,"abstract":"","PeriodicalId":50001,"journal":{"name":"Journal of the Geological Society of India","volume":"18 3","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138954925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Origin and Tectonic Implications of I-type Granites, North Delhi Fold Belt, NW, India: Insights from Whole Rock Geochemistry and Mineral Compositions","authors":"Naveen Kumar Kanyan, Naresh Kumar, Swati Rana, Naveen Kumar, A. Krishnakanta Singh","doi":"10.1007/s12594-023-2521-8","DOIUrl":"https://doi.org/10.1007/s12594-023-2521-8","url":null,"abstract":"<p>A comprehensive whole-rock geochemical and mineral chemistry study was carried out of granites from the Narnaul and surrounding isolated hills of North Delhi Mobile Belt, NW India to constrain their genesis, and tectonic environment. The distinctive features of granites are meta to peraluminous nature and decreasing trend of P₂O₅ with high SiO₂ (&gt;71%) ascribed to its metaigneous origin. In detail the chemical diversity of the studied samples is reflected by their affinity to Calc-alkaline to shoshonite series with high K₂O/Na₂O (mostly&gt;1), low MgO (&lt; 0.11%) and variation in Mg# (upto 0.5) and maficity with increasing SiO₂. The positive Eu anomalies, high LILE, highly enriched LREE (La/Sm = 4.13@#@19.33) pattern and comparatively elevated concentrations of Cs, La, Ta, Dy, Zr, Pb and Yb suggest different episodes of magmatic differentiation. Our data indicate that melting of older subduction-related igneous rocks and the underwent fractional crystallization in hydrous conditions is the possible mechanism for the generation of I-type granites in collisional tectonic setting.</p>","PeriodicalId":50001,"journal":{"name":"Journal of the Geological Society of India","volume":"246 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138819914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}