地质学期刊(英文)最新文献

{"title":"Magnetic Facies and Polymetallic Sulphides Deposit in the Mafic and Ultramafic Intrusions of Samapleu (Western Côte d’Ivoire)","authors":"Simon Pierre Djroh, Gnamba Emmanuel Franck Gouedji, Ehui Aka, Boko Célestin Sombo, C. Picard, M. Audet, B. Bakayoko","doi":"10.4236/ojg.2022.1210039","DOIUrl":"https://doi.org/10.4236/ojg.2022.1210039","url":null,"abstract":"","PeriodicalId":63246,"journal":{"name":"地质学期刊(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70650016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Safety of Mosul and Haditha Dams, West Iraq as Affected by Karstification","authors":"V. Sissakian, N. Al-Ansari, N. Adamo, J. Laue","doi":"10.4236/ojg.2022.121001","DOIUrl":"https://doi.org/10.4236/ojg.2022.121001","url":null,"abstract":"","PeriodicalId":63246,"journal":{"name":"地质学期刊(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70650218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seismic Signature Analysis for Clarification of Mud Volcanoes from the New Mud Diapirs Discovered at the NE-SW Moroccan Atlantic Margin","authors":"Asher Hategekamungu, N. Mhammdi, Amine Manar Mohamed","doi":"10.4236/ojg.2022.1211046","DOIUrl":"https://doi.org/10.4236/ojg.2022.1211046","url":null,"abstract":"","PeriodicalId":63246,"journal":{"name":"地质学期刊(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70650463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Probable Connection between a Bitumen Sample from the Western Niger Delta and Isan Well Sample from the Lower Cretaceous (Neocomian) Shale","authors":"S. Abrakasa, K. Kouadio, Franck-Hilaire Essiagne, Emma Laure Oura","doi":"10.4236/ojg.2022.1212050","DOIUrl":"https://doi.org/10.4236/ojg.2022.1212050","url":null,"abstract":"","PeriodicalId":63246,"journal":{"name":"地质学期刊(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70650530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stratigraphy of the MSGBC Basin in the Western Part of Thies by Pixelation and Website Simulation (Senegal, West Africa)","authors":"Mohamadou Moustapha Thiam, Moumar Dieye, A. Dione, A. Ndiaye, M. Ndiaye, Salimata Ngom, R. Sarr","doi":"10.4236/ojg.2022.129032","DOIUrl":"https://doi.org/10.4236/ojg.2022.129032","url":null,"abstract":"","PeriodicalId":63246,"journal":{"name":"地质学期刊(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70651049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Review of the Lithostratigraphy of the Early Cretaceous Sao Khua Formation, Khorat Group in Northeastern Thailand","authors":"P. Nulay, R. Arjwech","doi":"10.4236/ojg.2021.119021","DOIUrl":"https://doi.org/10.4236/ojg.2021.119021","url":null,"abstract":"Non-marine Cretaceous rocks are widespread in \u0000northeastern Thailand and is well known as “the red bed” Khorat Group. The Sao \u0000Khua Formation is in the upper half of the Khorat Group which is comprised of \u0000six formations. This formation was named and defined at the type section for \u0000the rocks between the restricted PhraWihan Formation and the Phu Phan Formation \u0000in the drainage area of the Huai Sao Khua, an intermittent stream that flows \u0000westward parallel to the highway between Nong Bua Lamphu and UdonThani \u0000Provinces. It contains richest and most diverse vertebrate and invertebrate \u0000Mesozoic fossils in Thailand. The Sao Khua Formation is characterized by the \u0000sequence of the fining-upward successions of at least 4-5 megacycles \u0000throughout the formation with the total thickness ranging between 400-700 \u0000meters. Each cycle starts with a channel lag conglomerate which the clasts \u0000consist totally of re-worked calcrete nodules. The conglomerates were overlain \u0000by fine-to medium-grained sandstones of point bar deposit. Finally, the top \u0000part of each cycle was covered by a succession of fine-grained floodplain \u0000deposit that makes up 60%-70% of the formation. Paleosols are commonly found \u0000in the Sao Khua Formation within the floodplain sequence and their geochemistry \u0000indicates a semi-arid paleoclimate. Based on lithostratigraphy, the Sao Khua \u0000Formation is interpreted to have been deposited by a meandering river system \u0000under a semi-arid climate condition. The age of the formation is assigned as \u0000the Hauterivian-Late Barremian based on vertebrate and bivalves fossils.","PeriodicalId":63246,"journal":{"name":"地质学期刊(英文)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44298753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Petroleum Water Contamination Resulting from Change in Land-Use in Paloich, South Sudan: Azolla pinnata and Lemna minor L. as an Efficient Bio Treatment Tool","authors":"Emmanuel Tete Ezbon Simon, Isa Zaharadden, A. Babati, Xinrong Zhang","doi":"10.4236/ojg.2021.119022","DOIUrl":"https://doi.org/10.4236/ojg.2021.119022","url":null,"abstract":"The \u0000study focused on the change in land-use and phytoremediation and biosorption efficacy \u0000of Lead and Cadmium from the petroleum-contaminated \u0000water by Lemna minor L. and Azolla pinnata. For the study of the \u0000change in land-use in Paloich, satellite imagery of Paloich between 2000 and 2020 was obtained from http://www.earthexplore.usgs.org/ and analyses. Water samples were \u0000collected at different points of Paloich. Experimental set-up consisted of four main samples sets viz: Lemna \u0000minor L. and petroleum-contaminated water, Azolla pinnata and petroleum contaminated \u0000water, combination of Lemna minor L., Azolla pinnata and petroleum-contaminated \u0000water then distilled water (control) all containing 3 liters of the water. Samples were left for 28 \u0000days. Physico-chemical parameters, heavy metals (Pb and Cd) and biosorption \u0000capacity were analyzed. The \u0000result indicates the changes in the land-use that occurred in the area of study for a \u0000given period (2000-2020). Built-up \u0000area, mining site and environmental degradation have increased by 8 percent between the periods. The \u0000reason behind the increase can be as a result of increase in population. The \u0000result also indicates high efficiency in pollutant reduction in the set-up \u0000containing the combination of Lemna minor L. and Azolla pinnata in \u0000which the Cd and Pb reduction efficiency recorded was 95% \u0000and 97% respectively. While set up containing Azolla P. had Pb and Cd \u0000reduction efficiency of 83% and 87% respectively. However, the set up \u0000containing Lemna minor L. has Pb and Cd reduction efficiency of 91% and \u000085% respectively. A significant absorption of the metals (Pb and Cd) were seen \u0000in the samples with the mixture of Lemna minor L. and Azolla pinnata. As such this study reveals the potentiality of Lemna minor L. and Azolla \u0000pinnata as some excellent phytoremediation candidates in the treatment of \u0000effluents containing Lead and Cadmium; however, \u0000we also recommend further studies on the efficacy of such plants in other \u0000classes of heavy metals.","PeriodicalId":63246,"journal":{"name":"地质学期刊(英文)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43820010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Jurassic-Cretaceous and Cretaceous-Paleogene Transitions and Mesozoic Vertebrates from Pakistan","authors":"M. S. Malkani","doi":"10.4236/ojg.2021.118016","DOIUrl":"https://doi.org/10.4236/ojg.2021.118016","url":null,"abstract":"The Jurassic-Cretaceous (J/K) and Cretaceous-Paleogene (K/Pg) boundaries/transitions are found in Pakistan especially well exposed on the western continental margin of the Indo-Pakistan plate (part of Gondwana) like Kirthar, Sulaiman and Kohat and Potwar basins. Its lithology is variable both lateral and also vertical. The J/K and K/Pg transitions are represented by terrestrial and marine strata like laterite, bauxite, vary colored shale, sandstones and conglomerates and rare limestone beds. Mesozoic vertebrates found so far belong to archosaurs like poripuchian titanosaurs (sauropods), theropods, mesoeucrocodiles, pterosaurs, snake and bird are briefly overviewed here.","PeriodicalId":63246,"journal":{"name":"地质学期刊(英文)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48070328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Micropalaeontological and Geochemical Evidence of the Late Jurassic Radiolarians Cherts of Naga Ophiolite Hill, Nagaland, Northeast-India","authors":"R. Ayyamperumal, Ramasamy Sooriamuthu, Gnanachandrasamy Gopalakrishnan, Ganga Biswa, Rajkumar Perumal, Prerna Gahlaut, Nusrat Nazir, Justin K Antony","doi":"10.4236/ojg.2021.118019","DOIUrl":"https://doi.org/10.4236/ojg.2021.118019","url":null,"abstract":"We analyzed the radiolarian assemblages (pelagic sediments) and geochemical studies of 15 samples collected from Meluri district Nagaland, Naga Hills Ophiolite belt (NHO) and it consists of the Flysch Naga-Arakan-Yoma trough beyond the Indo-Myanmar border. It reflects one of the many components of the Himalayan Orogenic systems of Tethyan oceanic crust discovered in Nagaland at Meluri district of India and they have very well-preserved studies and can be identified to Upper Jurassic (Kimmeridgian-mid-Tithonian). As well as a continuous sequence of Kimmeridgian-mid-Tithonian, five radiolarian assemblages have been identified in this study. This is so far the first recovery of pelagic sediment assemblages (Radiolarians) from the Naga Hills Ophiolite complex. Samples of Naga Hills Ophiolite belts fell in the Sublitharenite, Litharenite, and Fe-shale Fe-sand area, and the A-CN-K diagram indicates that these sediments in the source region were exposed deep to moderate weathering conditions. In the discriminant plot, the Naga Hill-Ophiolite-Chert samples occupy the field of origin of the sediment quartzose, and the log (K2O/Na2O) versus SiO2 samples fall into the active continental marginal field, and only one sample falls into an island arch, suggesting that the tectonic framework of the Naga Hills-Chert samples was deposited in the active continental margin and the diagrams K2O/Al2O3 and MgO/Al2O3 illustrated the tectonic setting of the marine environment from Naga Hill Ophiolite Chert. Such findings have been consistent with the current geology of Naga Hills in the province of Nagaland.","PeriodicalId":63246,"journal":{"name":"地质学期刊(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41390004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Yampa River-Colorado River Drainage Divide Origin Determined from Topographic Map Evidence, Southern Routt County, Colorado, USA","authors":"E. Clausen","doi":"10.4236/ojg.2021.118017","DOIUrl":"https://doi.org/10.4236/ojg.2021.118017","url":null,"abstract":"Detailed topographic map evidence and a new Cenozoic geologic and glacial history paradigm are used to determine the previously unexplained Yampa River-Colorado River drainage divide origin. The Yampa River now flows in a north direction away from the Colorado River (between the Park Range to the east and the Flat Tops region to the west) before turning in a west direction to reach the Unita Mountains where it joins the south-oriented Green River, which eventually joins the southwest-oriented Colorado River. Topographic maps show the Yampa-Colorado River drainage divide is asymmetric with steeper slopes leading to the Colorado River, barbed (south-oriented) tributaries leading to north-oriented Yampa River headwaters (especially near the Yampa River turn to the west), and evidence of a large north-to-south oriented diverging and converging channel complex that preceded present-day drainage routes. Map evidence is interpreted to mean massive south-oriented floods flowed through what are now north-oriented Yampa River headwaters valleys and that headward erosion of a deep west-oriented valley beheaded and reversed those south-oriented flood flow channels to create the north-oriented Yampa River headwaters and the Egeria Park area Yampa-Colorado River drainage divide seen today. Large south-oriented floods leading to the Colorado River (while regional uplift was occurring) are inconsistent with accepted Cenozoic geologic and glacial history paradigm predictions, but are predicted by a newly proposed Cenozoic geologic and glacial history paradigm in which a thick continental ice sheet created a deep “hole” by eroding underlying bedrock and also by causing crustal warping that raised the present-day northern Colorado east-west continental divide as immense south-oriented meltwater floods flowed across it.","PeriodicalId":63246,"journal":{"name":"地质学期刊(英文)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44331592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}