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Himalayan Geology, Vol. 30 (1),
2009, pp.45-68 Printed in India
Larger foraminiferal biostratigraphy of lower Paleogene successions of
Zanskar Tethyan and Indus–Tsangpo Suture Zones, Ladakh, India in the light
of additional data
N.S. MATHUR, K.P. JUYAL, KISHOR KUMAR*
Wadia Institute of Himalayan Geology, Dehradun 248 001, India
Abstract: Detailed biostratigraphic investigations were carried out
in several sections of the lower Paleogene successions in the Zanskar
Tethyan Zone (Ladakh), which lies at northern margin of the Indian Plate,
and in the northerly Indus–Tsangpo Suture Zone (Ladakh) situated between the
Indian and Asian plates. Based on additional palaeontological data, a
revised and more precise zonal scheme, than was available earlier, has been
proposed for these sediments. The revised biozones are correlated with the
shallow benthic zones (SBZ) established earlier for the Tethyan realm by
Serra-Kiel et al. (1998). A comprehensive chart showing correlation of lower
Paleogene biozones, based mainly on larger foraminifera, in the Zanskar
Tethyan and Indus–Tsangpo Suture zones and the Himalayan foothill belt, and
the shallow benthic zones of the Tethyan realm is also presented. |
