Petrography and Heavy Mineral analysis of the Dupi Tila sandstones from the Bijaipur area, northwest Sylhet Trough, Bengal Basin: Implication on Provenance Interpretations
This research investigates the Dupi Tila Formation, the youngest Tertiary stratigraphic unit in the Bengal Basin, focusing on its mineralogical composition and geological significance in the Bijaipur area of the Netrokona District, Bangladesh. Mineralogically, the sandstones are primarily composed o...
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Department of Geological Sciences, Jahangirnagar University
2023
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| author | BHUIYA, MAJED YEASMIN, RUMANA HASAN, MD. SAKIB |
| author_facet | BHUIYA, MAJED YEASMIN, RUMANA HASAN, MD. SAKIB |
| author_sort | BHUIYA, MAJED |
| collection | OJS |
| description | This research investigates the Dupi Tila Formation, the youngest Tertiary stratigraphic unit in the Bengal Basin, focusing on its mineralogical composition and geological significance in the Bijaipur area of the Netrokona District, Bangladesh. Mineralogically, the sandstones are primarily composed of quartz (average 87.88%), with subordinate feldspar (average 1.34%) and lithic grains (average 0.57%), and therefore, categorize the sandstones mainly as quartzarenites, differentiating them from sandstones of this formations in other part of the Bengal Basin. The study suggests that the sediments originated from eroded cratonic rocks and were influenced by climatic conditions characterized by high temperatures and humidity, which facilitated significant weathering processes. Heavy mineral analysis indicates low overall concentrations with zircon, amphibole, and pyroxene being the most abundant, reflecting a range of igneous and metamorphic parent rocks. The high amount of quartz and ZTR indices in these sandstones reveal a relatively mature sediments, which probably the results of severe chemical weathering of parent rocks. In addition to framework mineralogy, the presence of diverse heavy mineral suites indicates complex geological histories involving collision orogen settings. Such observations help to find the link with the uplift history of the Shillong Plateau during late Pliocene–Pleistocene time which is the result of ongoing tectonic interactions among the Indian-Eurasian plates. |
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| institution | My University |
| language | eng |
| publishDate | 2023 |
| publisher | Department of Geological Sciences, Jahangirnagar University |
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| spelling | ojs-1882025-09-11T06:34:09Z Petrography and Heavy Mineral analysis of the Dupi Tila sandstones from the Bijaipur area, northwest Sylhet Trough, Bengal Basin: Implication on Provenance Interpretations BHUIYA, MAJED YEASMIN, RUMANA HASAN, MD. SAKIB Quartzarenites heavy mineral assemblages craton Shillong Plateau This research investigates the Dupi Tila Formation, the youngest Tertiary stratigraphic unit in the Bengal Basin, focusing on its mineralogical composition and geological significance in the Bijaipur area of the Netrokona District, Bangladesh. Mineralogically, the sandstones are primarily composed of quartz (average 87.88%), with subordinate feldspar (average 1.34%) and lithic grains (average 0.57%), and therefore, categorize the sandstones mainly as quartzarenites, differentiating them from sandstones of this formations in other part of the Bengal Basin. The study suggests that the sediments originated from eroded cratonic rocks and were influenced by climatic conditions characterized by high temperatures and humidity, which facilitated significant weathering processes. Heavy mineral analysis indicates low overall concentrations with zircon, amphibole, and pyroxene being the most abundant, reflecting a range of igneous and metamorphic parent rocks. The high amount of quartz and ZTR indices in these sandstones reveal a relatively mature sediments, which probably the results of severe chemical weathering of parent rocks. In addition to framework mineralogy, the presence of diverse heavy mineral suites indicates complex geological histories involving collision orogen settings. Such observations help to find the link with the uplift history of the Shillong Plateau during late Pliocene–Pleistocene time which is the result of ongoing tectonic interactions among the Indian-Eurasian plates. Department of Geological Sciences, Jahangirnagar University 2023-12-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Conference Proceedings Submission application/pdf http://journals.juniv.edu/index.php/bgj/article/view/188 10.59185/bgj.v29i1.188 Bangladesh Geoscience Journal; Vol. 29 No. 1 (2023); 37-57 1028-6845 10.59185/bgj.v29i1 eng http://journals.juniv.edu/index.php/bgj/article/view/188/133 Copyright (c) 2025 Bangladesh Geoscience Journal |
| spellingShingle | Quartzarenites heavy mineral assemblages craton Shillong Plateau BHUIYA, MAJED YEASMIN, RUMANA HASAN, MD. SAKIB Petrography and Heavy Mineral analysis of the Dupi Tila sandstones from the Bijaipur area, northwest Sylhet Trough, Bengal Basin: Implication on Provenance Interpretations |
| title | Petrography and Heavy Mineral analysis of the Dupi Tila sandstones from the Bijaipur area, northwest Sylhet Trough, Bengal Basin: Implication on Provenance Interpretations |
| title_full | Petrography and Heavy Mineral analysis of the Dupi Tila sandstones from the Bijaipur area, northwest Sylhet Trough, Bengal Basin: Implication on Provenance Interpretations |
| title_fullStr | Petrography and Heavy Mineral analysis of the Dupi Tila sandstones from the Bijaipur area, northwest Sylhet Trough, Bengal Basin: Implication on Provenance Interpretations |
| title_full_unstemmed | Petrography and Heavy Mineral analysis of the Dupi Tila sandstones from the Bijaipur area, northwest Sylhet Trough, Bengal Basin: Implication on Provenance Interpretations |
| title_short | Petrography and Heavy Mineral analysis of the Dupi Tila sandstones from the Bijaipur area, northwest Sylhet Trough, Bengal Basin: Implication on Provenance Interpretations |
| title_sort | petrography and heavy mineral analysis of the dupi tila sandstones from the bijaipur area northwest sylhet trough bengal basin implication on provenance interpretations |
| topic | Quartzarenites heavy mineral assemblages craton Shillong Plateau |
| topic_facet | Quartzarenites heavy mineral assemblages craton Shillong Plateau |
| url | http://journals.juniv.edu/index.php/bgj/article/view/188 |
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