• Login
    View Item 
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Geochemistry and mineralogy of modern fjord sediments, west Spitsbergen, Svalbard: implications for provenance and weathering

    Thumbnail
    Date
    2025
    Author
    Choudhary, S.
    Saalim, S. M.
    Mohan, R.
    Metadata
    Show full item record
    Abstract
    Arctic fjords are ideal sites for studying the recent sedimentary process that affects high-latitude coastal ecosystems. High latitude Raudfjord, Magdalenefjord, and St. Jonsfjord from the west Spitsbergen, Svalbard have been investigated to assess the source and distribution of clay minerals, weathering processes, and geochemistry of major elements. The results showed illite to be the dominant clay mineral group, followed by chlorite and kaolinite, suggesting physical rather than chemical weathering is prominent in the region, also supported by a decrease in the illite chemistry and an increase in illite crystallinity (0.18�?2?). The mineralogical proxies, along with the K2O/(Na2O+CaO) molar ratio, chemical index of alteration (CIA), and major elements, suggested hydrolysis of plagioclase (enrichment of Ca and Na) as compared to the K-feldspar. An appreciable amount of plagioclase (21�40%) in the fjord sediment samples suggested a mostly fresh source of sediment, which was confirmed by the low Plagioclase Index of Alteration (PIA). Hydrodynamic mineralogical sorting primarily controls the inorganic geochemical composition of the fjord sediments. Our results suggest that cold and dry climate conditions and lithology significantly controlled weathering and erosion processes in high Arctic fjords. Strong physical weathering caused by glacial activities is responsible for the large availability of primary minerals and low abundance of secondary minerals in these fjords.
    URI
    https://doi.org/10.1007/s12665-025-12251-y
    http://drs.nio.res.in/drs/handle/2264/9456
    Collections
    • Scholarly literature [9127]

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV
     

     

    Browse

    All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV