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Mathur, S. M.
- Carbon Isotope Ratio of the Coaly Matter from the Basal Part of the Proterozoic Vindhyan Supergroup
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Authors
Affiliations
1 Physical Research Laboratory, Navrangpura, Ahmedabad 380 009, IN
2 Centre of Advanced Study in Geology, University of Saugar, Sagar 470 003, MP, IN
1 Physical Research Laboratory, Navrangpura, Ahmedabad 380 009, IN
2 Centre of Advanced Study in Geology, University of Saugar, Sagar 470 003, MP, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 27, No 1 (1986), Pagination: 119-120Abstract
The stable carbon isotope ratio (13C/12C) of the carbonaceou matter from the basal part of the Vindhyan sub-group, estimated to be about 1200 Ma old, has been measured and the values support a biogenic origin for the incorporated carbon.- Wind-Sculpturing of the Vindhyan Sandstone in the Bhopal Region, M.P.
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Authors
Affiliations
1 Centre of Advanced Study in Geology, University of Saugar, Sagar 470 003, M.P., IN
1 Centre of Advanced Study in Geology, University of Saugar, Sagar 470 003, M.P., IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 27, No 2 (1986), Pagination: 202-208Abstract
Wind-sculpturing of the Karauli Quartzite (Rewa Group, Vindhyan Supergroup) at several localities in the Bhopal region has produced rock monuments like monad-rocks, inselbergs, etc., with tunnels boring through some of them. These monuments are found as isolated rock masses of various shapes and sizes standing above land surfaces that have reached base level of erosion. The highly jointed, horizontally bedded and fractured quartz-arenite rests over massive but softer sandstone which is first eroded causing overhang of the former. Eventual collapse of the overhanging rock masses and their ultimate removal leaves 1he soft but massive horizon underneath unprotected. Repetition of the process over eons of time has produced these natural monuments; the most remarkable group is seen at a locality known as Bhim Baithka. Several of these natural sculptures have developed tunnels and passages that pass right through them in the softer sandstone towards t he base. where the action of the sand- and particle-laden wind is most destructive.- Vandalism in the Name of Religion
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Authors
Affiliations
1 Lucknow, IN
1 Lucknow, IN