Rayees A. Shah, Hema Achyuthan, Satish J. Sangode, Aasif M. Lone, Mohammd Rafiq
{"title":"西北喜马拉雅克什米尔谷地Wular湖沉积物矿物磁地球化学填图","authors":"Rayees A. Shah, Hema Achyuthan, Satish J. Sangode, Aasif M. Lone, Mohammd Rafiq","doi":"10.1007/s10498-019-09364-9","DOIUrl":null,"url":null,"abstract":"<p>This study presents major element geochemistry, mineral magnetism and textural analysis of lake-bottom sediments collected from the Wular Lake located in the Kashmir Valley (northwest Himalaya). Connected to the Jhelum River, Wular Lake basin occupies?~?75% watershed area of the valley, covering?~?10,196?km<sup>2</sup>, and makes it the major depo-centre for Kashmir Valley. The sediments represent dominant silt fraction with TiO<sub>2</sub>, MgO, Fe<sub>2</sub>O<sub>3</sub> and MnO enrichment; and depletion of Na<sub>2</sub>O and P<sub>2</sub>O<sub>5</sub> with reference to upper continental crust. The average CIA (64.17%) reflects moderate chemical weathering of the catchment source rocks. The mineral magnetic mapping identified distinct domains of restricted/reducing and?well-ventilated/oxic conditions, illustrating spatial environmental variability within the lake-bottom environments. The geochemical and mineral magnetic mapping therefore provides a baseline reference for emerging climate and anthropogenic changes being experienced in the Kashmir Valley.</p>","PeriodicalId":8102,"journal":{"name":"Aquatic Geochemistry","volume":"26 1","pages":"31 - 52"},"PeriodicalIF":1.7000,"publicationDate":"2019-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s10498-019-09364-9","citationCount":"8","resultStr":"{\"title\":\"Mineral Magnetic and Geochemical Mapping of the Wular Lake Sediments, Kashmir Valley, NW Himalaya\",\"authors\":\"Rayees A. Shah, Hema Achyuthan, Satish J. Sangode, Aasif M. Lone, Mohammd Rafiq\",\"doi\":\"10.1007/s10498-019-09364-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>This study presents major element geochemistry, mineral magnetism and textural analysis of lake-bottom sediments collected from the Wular Lake located in the Kashmir Valley (northwest Himalaya). Connected to the Jhelum River, Wular Lake basin occupies?~?75% watershed area of the valley, covering?~?10,196?km<sup>2</sup>, and makes it the major depo-centre for Kashmir Valley. The sediments represent dominant silt fraction with TiO<sub>2</sub>, MgO, Fe<sub>2</sub>O<sub>3</sub> and MnO enrichment; and depletion of Na<sub>2</sub>O and P<sub>2</sub>O<sub>5</sub> with reference to upper continental crust. The average CIA (64.17%) reflects moderate chemical weathering of the catchment source rocks. The mineral magnetic mapping identified distinct domains of restricted/reducing and?well-ventilated/oxic conditions, illustrating spatial environmental variability within the lake-bottom environments. The geochemical and mineral magnetic mapping therefore provides a baseline reference for emerging climate and anthropogenic changes being experienced in the Kashmir Valley.</p>\",\"PeriodicalId\":8102,\"journal\":{\"name\":\"Aquatic Geochemistry\",\"volume\":\"26 1\",\"pages\":\"31 - 52\"},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2019-12-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1007/s10498-019-09364-9\",\"citationCount\":\"8\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Aquatic Geochemistry\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10498-019-09364-9\",\"RegionNum\":4,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"GEOCHEMISTRY & GEOPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Aquatic Geochemistry","FirstCategoryId":"89","ListUrlMain":"https://link.springer.com/article/10.1007/s10498-019-09364-9","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
Mineral Magnetic and Geochemical Mapping of the Wular Lake Sediments, Kashmir Valley, NW Himalaya
This study presents major element geochemistry, mineral magnetism and textural analysis of lake-bottom sediments collected from the Wular Lake located in the Kashmir Valley (northwest Himalaya). Connected to the Jhelum River, Wular Lake basin occupies?~?75% watershed area of the valley, covering?~?10,196?km2, and makes it the major depo-centre for Kashmir Valley. The sediments represent dominant silt fraction with TiO2, MgO, Fe2O3 and MnO enrichment; and depletion of Na2O and P2O5 with reference to upper continental crust. The average CIA (64.17%) reflects moderate chemical weathering of the catchment source rocks. The mineral magnetic mapping identified distinct domains of restricted/reducing and?well-ventilated/oxic conditions, illustrating spatial environmental variability within the lake-bottom environments. The geochemical and mineral magnetic mapping therefore provides a baseline reference for emerging climate and anthropogenic changes being experienced in the Kashmir Valley.
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We publish original studies relating to the geochemistry of natural waters and their interactions with rocks and minerals under near Earth-surface conditions. Coverage includes theoretical, experimental, and modeling papers dealing with this subject area, as well as papers presenting observations of natural systems that stress major processes. The journal also presents `letter''-type papers for rapid publication and a limited number of review-type papers on topics of particularly broad interest or current major controversy.
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