Record Details

Overview of the meso- to neoproterozoic evolution of the Vindhyan basin, central India

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Overview of the meso- to neoproterozoic evolution of the Vindhyan basin, central India
 
Creator BOSE, PK
SARKAR, S
CHAKRABARTY, S
BANERJEE, S
 
Subject sediment deformation structures
structures seismites
sea-level
deposits
earthquakes
storm
sequences
framework
quartzite
australia
depositional cycles
paleoseismicity
systems tracts
proterozoic
vindhyan basin
 
Description Despite its origin in a stable intracratonic basin, the Vindhyan Supergroup, central India, embodies tectonic-driven depositional cycles of various orders. A marked change in sedimentation pattern was coupled with a transient plate-margin compression in the otherwise extensional regime. An unconformity laterally correlatable with a conformity, that divides the Supergroup in two sequences arose in consequence. Maximum flooding surfaces (MFS) within the sequences can generally be correlated with intrabasinal volcanism that drastically diminished through the initial rift to later sag stage of basin evolution. Concomitantly with the change in tectonic milieu, paleoseismic deformation structures and related deposits also became drastically reduced in scale, Nevertheless, metre- and decametre-scale depositional cycles correlate well with the subtle record of paleoseismicity, Intermittent tilting of the depositional substratum is demonstrable in systematic bed-dip changes in metre-scale fining upward depositional cycles in the rift stage. In the sag stage, it is reflected merely in consistent deflection of paleocurrent directions at the top of the decametre-scale parasequence sets. Towards the top of the Supergroup, progressive thickening and decreasing frequency of parasequences indicates a declining rate of basin subsidence. Progradation, despite punctuation, thus resulted in basin-filling. (C) 2001 .
 
Publisher ELSEVIER SCIENCE BV
 
Date 2011-07-26T01:26:50Z
2011-12-26T12:52:25Z
2011-12-27T05:37:16Z
2011-07-26T01:26:50Z
2011-12-26T12:52:25Z
2011-12-27T05:37:16Z
2001
 
Type Article
 
Identifier SEDIMENTARY GEOLOGY, 141(), 395-419
0037-0738
http://dx.doi.org/10.1016/S0037-0738(01)00084-7
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6846
http://hdl.handle.net/10054/6846
 
Language en