2017/05/01 by C. Babeesh, Aasif Mohmad Lone, Aasif Lone +1 · 34 citations
Computer Science · Earth and Planetary Sciences · Environmental Science · #Geochemistry #Geochemistry and Elemental Analysis #Geochemistry and Geologic Mapping #Geology #Geomorphology #Heavy metals in environment #Paleontology #Provenance #Tectonics #Weathering
paper · doi:10.1007/s12594-017-0645-4
published in Journal of the Geological Society of India 89(5), 563-572 (Springer Science+Business Media)
crossref issued 2017/05/01 · crossref published 2017/05/01 · crossref published-online 2017/05/01 · crossref published-print 2017/05/01 · openalex publication_date 2017/05/01 · crossref created 2017/05/23 · crossref deposited 2024/10/03 · openalex created_date 2025/10/10 · crossref indexed 2026/08/04 · openalex updated_date 2026/08/04
ABSTRACT This paper presents a detailed sediment chemistry investigation of the Manasbal lake, Srinagar, Jammu and Kashmir, India, which is one of the high altitude lakes in the Kashmir valley. 22 lake floor sediment samples covering the entire lake were collected and analyzed for textural characteristics, CaCO3, organic matter, TOC, TN contents, C/N ratio, major and trace element chemistry. These analyses were conducted to trace the provenance of the sediments. Textural parameters reveal that the lake sediments consist predominantly clay and silt fractions. The C/N ratio of the sediments indicates a mixed source of TOC, both autochthonous and allochthonous in origin. The log (Fe2O3/K2O) Vs. log (SiO2/Al2O3) graph of the sediments discriminates the rock types of the catchment area that are Fe-shale, Fe-sand, wacke, shale and litharenite. The Chemical Index of Alteration (CIA) falls between 59.11 to 90.16% and Chemical Index of Weathering (CIW) between 63.97 to 99.68% and these values are higher than the Post-Archaean Australian Shale (PAAS), indicating moderate to highly chemically weathered lake floor sediments. Plagioclase Index of Alteration (PIA) values (60.74-99.63%) suggests the occurrence of plagioclase feldspars in the lake floor sediments. Geochemical characteristics signify a mixed-nature of provenance of the lake floor sediments due to the tectonic settings of the lake basin in a complex catchment area.