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Climatic versus tectonic control on storm cyclicity in mesoproterozoic Koldaha shale, Vindhyan supergroup, Central India

DSpace at IIT Bombay

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Title Climatic versus tectonic control on storm cyclicity in mesoproterozoic Koldaha shale, Vindhyan supergroup, Central India
 
Creator BANERJEE, S
 
Subject hummocky cross-stratification
deposition
sequences
facies
middle
mesoproterozoic koldaha shale
shelf storm succession
milankovitch cycles
systems tract
basinal tectonics
 
Description The 1.2 Ga-old Koldaha shale, central India reveals three orders of depositional cyclicities in its basal storm-dominated shelf succession. Visual appraisal as well as Fourier and MEM analyses concurs in this respect. Only the major storm events at intervals of a few thousands of years have left recognizable imprints. Interbedding of storm sandstones and fairweather shales is apparently climate-controlled. Packaging of about seven such climatic cycles results the second-order cyclicity befitting eccentricity cycles of contemporary scale. Nonetheless, for the erratic storm bed-thickness trends within the cycles some other factor/s might have played a role. The third order cycles are, more dominantly, correlatable with basinal tectonics.
 
Publisher INT ASSOC GONDWANA RESEARCH
 
Date 2011-08-03T11:33:35Z
2011-12-26T12:54:11Z
2011-12-27T05:41:41Z
2011-08-03T11:33:35Z
2011-12-26T12:54:11Z
2011-12-27T05:41:41Z
2000
 
Type Article
 
Identifier GONDWANA RESEARCH, 3(4), 521-528
1342-937X
http://dx.doi.org/10.1016/S1342-937X(05)70758-9
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9011
http://hdl.handle.net/10054/9011
 
Language en