TITLE:
Holocene Biostratigraphic Zones Corresponding Litho-Chronostratigraphy, Environment of Deposition and Successive Changes in the Geomorphology of Bengal Basin, India during Last 10,000 Years
AUTHORS:
Prasanta Kumar Sen, Manju Banerjee
KEYWORDS:
Holocene, Biostratigraphy, Flandrian Transgression, Geomorphology, Bengal Basin
JOURNAL NAME:
International Journal of Geosciences,
Vol.7 No.4,
April
28,
2016
ABSTRACT: Biostratigraphic Zones Bb.
Bz. H. I-V distinguished in C14dated
Peat, peaty clay sediments above arid, Barren zone have identified distinct
environment of deposition as fresh water mixed brackish water to shallow marine
to brackish water mangrove swamp, brackish water mixed fresh water swamp
followed by colonization of non-littoral species to fresh water swamp during
Holocene in the Bengal basin, India in chronological succession. The successive
phases of depositional environment have identified the events of sea level
rise, marine transgression and sea ward movement of the sea. The unique
database has explored successive changes in the geomorphology of South Bengal
from upland dry to marine deltaic environment to fresh water upland condition.