Depositional history of the early part of the Jurassic succession on the Rajasthan Shelf, western India
2006; Elsevier BV; Volume: 16; Linguagem: Inglês
ISSN
1745-5391
AutoresDhirendra K. Pandey, Sha Jingeng, Shipra Choudhary,
Tópico(s)Groundwater and Watershed Analysis
ResumoAbstract Part of the lowermost deposits of the Triassic to Early-mid Jurassic (up to Bajocian) sedimentary succession spread across the Rajasthan shelf on the western part of the Indian craton is found in the Jaisalmer Basin east of Jaisalmer with the best exposed sections along the Jodhpur-Jaisalmer Highway. Based on lithostratigraphic characteristics, the succession is divided into four: Odania and Thaiat members, Lathi Formation; and Hamira and Joyan members, Jaisalmer Formation. Six facies are defined from microfacies, sedimentary structures, biotic components and depositional environments: (1) ferruginous, pebbly, cross-bedded sandstone-high-energy, fluvial; (2) cross-bedded, poorly sorted, fossil wood-bearing sandstone-high-energy, terrestrial, with high influx of sediment and warm and humid climate; (3) cross-bedded to rarely bioturbated, alternating silt to fine-grained sandstone-fluctuating sedimentation rates and energy-nearshore, mesohaline embayment to lagoonal; (4) partly bioturbated, storm-d...
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