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Sarkar et al. 1998

Sarkar, S., Chakraborty, P.P., Bhattacharya, S.K. and Banerjee, S. (1998). C-12-enrichment along intraformational unconformities within Proterozoic Bhander Limestone, Son valley, India and its implication. Carbonates and Evaporites 13(1): 108-114.

The late Proterozoic Bhander Limestone in Son valley, India developed in a very shallow epeiric ramp setting that partially emerged time and again above the sea surface. Landward extensive karstified sediments attest. to three events of considerable regressions. The resultant intraformational unconformities are characterized by C-12-enrichment in the scale of their Phanerozoic equivalents. Early diagenetic void-fill cements in these karats are even more enriched. These sediments and cements in relatively seaward past show relatively lesser degree of enrichment, possibly because of shorter duration of exposure. The late Proterozoic meteoric water seems to have turned rich in C-12 with contribution from land plants similar to Phanerozoic meteoric water.

BACKGROUND DATA FILES

	Abstract

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	Field Techniques

Keywords
isotopic composition, meteoric diagenesis, carbonates, successions, deposition, sequences, sediments, canada, spain, basin

Journal
Carbonates and Evaporites