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Organic Geochemical and Petrological analysis of Jharia Coals

Devi, Salam Maheshwori (2018) Organic Geochemical and Petrological analysis of Jharia Coals. Masters thesis, Indian Institute of Science Education and Research Kolkata.

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    Abstract

    A detailed organic geochemical study of Jharia coals from Damodar valley basin in India have been evaluated along with bulk organic characteristics as well as organic petrographic characteristics. Coals are from Lower Permian Barakar Formation, a major coal bearing strata in India.The Rock-Eval Pyrolysis parameters suggest that the coals are in sub-mature to over-mature stage. Pr/Ph, Pr/n-C₁₇ and Ph/n-C₁₈8 cross-plot suggests that the organic matters were deposited under oxic to sub-oxic condition. Absence of diterpenoids and triterpenoids biomarkers indicate high thermal maturity in coal samples. The presence of higher amount of inertinite content and absence of liptinite also support the higher maturity in coal samples. Distributions of polycyclic aromatic hydrocarbons (PAHs) are also indicating the effect of higher thermal maturity in our studied samples. The origin of the organic matter was found to be higher land plants. The presence of igneous intrusive bodies affects the organic geochemical parameters.

    Item Type: Thesis (Masters)
    Additional Information: Supervisor: Dr. Sitindra Sundar Dirghangi
    Uncontrolled Keywords: Damodar Valley Basin; Jharia Coals; Lower Permian Barakar Formation; Organic Geochemical Study
    Subjects: Q Science > QE Geology
    Divisions: Department of Earth Sciences
    Depositing User: IISER Kolkata Librarian
    Date Deposited: 01 Jan 2019 13:18
    Last Modified: 01 Jan 2019 13:18
    URI: http://eprints.iiserkol.ac.in/id/eprint/807

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