Author
Sutapa Patra
Bio: Sutapa Patra is an academic researcher from Indian Institute of Science Education and Research, Kolkata. The author has contributed to research in topics: Extinction (optical mineralogy) & Upwelling. The author has an hindex of 2, co-authored 3 publications receiving 29 citations.
Papers
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TL;DR: In this article, the authors evaluated biomarker signatures along with bulk organic matter and petrographic characteristics in coal samples collected from two Gondwana basins in India, namely, Satpura Basin (Kanhan coalfield) and Damodar Valley Basin (Jharia Coalfield).
31 citations
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TL;DR: In this article, the optical anisotropy, optical sign, textural heterogeneity and deformational features of the maceral grains along with the Raman spectral characteristics of the seven coal samples collected from the Himalayan fold-thrust belts of Sikkim State, India.
17 citations
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TL;DR: In this article, the authors compared the recovered materials (RM) from four extraction methods by scanning electron microscope (SEM) and carbon isotopic composition (δ13CRM) and found that the recovery yield is high in one of the wet-oxidation methods, showing significant organic residues (tissues) as evident from the SEM images.
7 citations
Cited by
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TL;DR: In this paper, medium volatile bituminous coals with four types of tectonic deformation were selected and extracted with tetrahydrofuran to investigate the dissolution behavior and distribution of low molecular weight compounds in TDCs.
21 citations
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TL;DR: In this article, the authors investigate the source and palaeoenvironmental conditions prevailed during the deposition of the Lower Permian shales of the Auranga Basin located at western flank of the Damodar valley, India.
15 citations
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TL;DR: In this article, the microstructural framework of coals from the Raniganj and the Jharia Basins as well as from the Himalayan fold-thrust belts of Sikkim, India, by vitrinite reflectance, Raman spectroscopy, Fourier transform infrared, and X-ray photoelectron spectrographs was investigated.
15 citations
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TL;DR: In this article, the authors used the Raman spectra of twenty borehole shale samples for assessing the hydrocarbon generation proficiency of the shales from the Barren Measures Formation (a stratigraphic unit of the Gondwana that is devoid of any workable coal seam) of the Jharia Basin, India, which was underinvestigated until now.
15 citations
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TL;DR: In this paper, a maturity sequence from the Keluke Formation of the Upper Carboniferous marine-continental transitional depositional environment in the Qaidam basin, NW China has been geochemically characterized by bulk and molecular compositions, especially the behavior of polyaromatic hydrocarbons and organosulfur compounds.
Abstract: A maturity sequence from the Keluke Formation of the Upper Carboniferous marine–continental transitional depositional environment in the Qaidam basin, NW China has been geochemically characterized by bulk and molecular compositions, especially the behavior of polyaromatic hydrocarbons and organosulfur compounds. Some commonly used maturity parameters such as the methylnaphthalene ratio (MNR), the dimethylnaphthalene ratio (DNR), the methylphenanthrene ratio (MPR), methylphenanthrene index-3 (MPI-3), dimethylphenanthrene index-2 (DMPI-2), the methyldibenzothiophene ratio (MDR) and dimethyldibenzothiophene (DMDBT) ratios (4,6-/1,6- + 1,8- + l,4-DMDBT and 2,4-/1,6- + 1,8- + l,4-DMDBT), Rock-Eval Tmax, and measured vitrinite reflectance (%Ro) increase gradually with burial depth, whereas others such as the trimethylnaphthalene ratio (TMNr), the tetramethylnaphthalene ratio (TeMNr), MPI-1, and DMPI-1 show no correlation with these maturity indicators. The calculated equivalent Ro values from MPR and MDR based ...
13 citations