KMS Nanjing Institute of Geology and Palaeonotology,CAS
Depositional environments of Bathonian sediments from the Jaisalmer Basin, Rajasthan, western India | |
Pandey, D. K.; Sha JinGeng (沙金庚); Choudhary, Shipra | |
2006 | |
发表期刊 | PROGRESS IN NATURAL SCIENCE |
ISSN | 1002-0071 |
卷号 | 16页码:163-175 |
摘要 | The pericratonic sedimentary Jaisalmer Basin, west of the Aravalli Ranges, on the westerly dipping eastern flank of the Indus Shelf, is a principal structural element of Rajasthan. Jurassic sediments in the SE comprise non-marine sandstones and conglomerates to nearshore, brackish to marine sands, silts, clays and carbonates, grouped lithostratigraphically into the Lathi, Jaisalmer, Baisakhi, and Bhadasar formations. The Late Bajocian to Oxfordian Jaisalmer Formation is divided, in ascending order, into the Hamira, Joyan, Fort, Badabag, Kuldhar, and Jajiya members. Fossil records providing a Bajocian to Bathonian age for the lower and middle parts of the formation include: a Late Bajocian coral Isastraea bernardiana (d'Orbigny) in the uppermost Joyan Member; Bathonian ammonite Clydoniceras in the basal part of the Badabag Member; Bathonian foraminiferal/bivalve assemblages in the Fort Member. The topmost bed of the Joyan Member represents the peak of first marine transgression of the Jaisalmer Basin, probably contemporaneous with the Late Bajocian one in the neighbouring Kachchh Basin. Based on faunal studies Bajocian to Bathonian sediments of the Jaisalmer Basin can be broadly correlated with those of the Kachchh Basin. The Fort and Badabag members represent the following depositional environments, in chronological order: (a) brackish to shallow fully marine; (b) fully marine with rapidly fluctuating water energy and sedimentation rates; (c) nearshore to lower shoreface with fluctuating energy conditions, salinity and sedimentation rates; (d) near-shore to shoreface channels and storm-dominated marine above fair-weather wave-base; (e) lagoon with fluctuating low to moderate energy, salinity and sedimentation rates; M storm-dominated shelf to lower shoreface. |
关键词 | Jaisalmer Basin Jaisalmer Formation Bathonian Microfacies Depositional Environments |
语种 | 英语 |
关键词[WOS] | Biostratigraphy |
WOS研究方向 | Materials Science ; Science & Technology - Other Topics |
WOS类目 | Materials Science, Multidisciplinary ; Multidisciplinary Sciences |
WOS记录号 | WOS:000240034200013 |
出版者 | TAYLOR & FRANCIS LTD |
文献类型 | 期刊论文 |
条目标识符 | http://ir.nigpas.ac.cn/handle/332004/554 |
专题 | 中国科学院南京地质古生物研究所 其他 |
通讯作者 | Sha JinGeng (沙金庚) |
作者单位 | 1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, LPS, Nanjing 210008, Peoples R China 2.Univ Rajasthan, Dept Geol, Jaipur 302004, Rajasthan, India |
推荐引用方式 GB/T 7714 | Pandey, D. K.,Sha JinGeng ,Choudhary, Shipra. Depositional environments of Bathonian sediments from the Jaisalmer Basin, Rajasthan, western India[J]. PROGRESS IN NATURAL SCIENCE,2006,16:163-175. |
APA | Pandey, D. K.,Sha JinGeng ,&Choudhary, Shipra.(2006).Depositional environments of Bathonian sediments from the Jaisalmer Basin, Rajasthan, western India.PROGRESS IN NATURAL SCIENCE,16,163-175. |
MLA | Pandey, D. K.,et al."Depositional environments of Bathonian sediments from the Jaisalmer Basin, Rajasthan, western India".PROGRESS IN NATURAL SCIENCE 16(2006):163-175. |
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