Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/4624
Title: K-Ar and Rb-Sr ages of Cretaceous glauconites from Jaisalmer basin, Rajasthan
Authors: Vijan A.R.
Rathore S.S.
Vig K.C.
Bansal M.
Singh M.P.
Prabhu B.N.
Published in: Journal of the Geological Society of India
Abstract: The importance of dating glauconites is that they are formed under low sedimentation rates connected with marine transgression and are commonly associated with unconformities and other stratigraphic breaks. This paper presents the first quantitative age estimation of glauconite samples separated from subsurface cores of Goru and Pariwar Formations of Jaisalmer basin, Rajasthan, India. SEM studies, X-ray diffraction patterns and high K2O content (6.8 to 7.4%) of these samples indicate that they are highly evolved and are ideal for isotopic dating. The Rb-Sr age of 108±5 Ma and average K-Ar age of 103±3 Ma obtained for the glauconites from the Goru Formation are indistinguishable within error and agree with their biostratigraphic age. Glauconites from the upper most part of the Pariwar Formation give an average K-Ar age of 106±3 Ma (early Albian), which is slightly lower than their biostratigraphic age.
Citation: Journal of the Geological Society of India(2000), 56(1): 15-25
URI: http://repository.iitr.ac.in/handle/123456789/4624
Issue Date: 2000
Keywords: Geochronology
Glauconite
Goru and Pariwar Formations
Jaisalmer basin
Rajasthan
ISSN: 167622
Author Scopus IDs: 6506631668
7006353080
35606318500
57206545672
55469492400
7004454063
Author Affiliations: Vijan, A.R., Geochemistry Division, KDM Inst. of Petroleum Exploration, Oil and Natural Gas Corp. Ltd., Dehra Dun - 248 195, India
Rathore, S.S., Geochemistry Division, KDM Inst. of Petroleum Exploration, Oil and Natural Gas Corp. Ltd., Dehra Dun - 248 195, India
Vig, K.C., Geochemistry Division, KDM Inst. of Petroleum Exploration, Oil and Natural Gas Corp. Ltd., Dehra Dun - 248 195, India
Bansal, M., Geochemistry Division, KDM Inst. of Petroleum Exploration, Oil and Natural Gas Corp. Ltd., Dehra Dun - 248 195, India
Singh, M.P., Geochemistry Division, KDM Inst. of Petroleum Exploration, Oil and Natural Gas Corp. Ltd., Dehra Dun - 248 195, India
Prabhu, B.N., Geochemistry Division, KDM Inst. of Petroleum Exploration, Oil and Natural Gas Corp. Ltd., Dehra Dun - 248 195, India
Corresponding Author: Vijan, A.R.; Geochemistry Division, KDM Inst. of Petroleum Exploration, Oil and Natural Gas Corp. Ltd., Dehra Dun - 248 195, India
Appears in Collections:Journal Publications [CE]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.