SIGNIFICANCE OF THE TERMINAL CRETACEOUS CALCAREOUS NANNOFOSSIL MARKERMICULA-PRINSII AT THE CRETACEOUS-TERTIARY BOUNDARY IN THE UM-SOHRYNGKEW SECTION, MEGHALAYA, INDIA

Authors
Citation
R. Garg et Kp. Jain, SIGNIFICANCE OF THE TERMINAL CRETACEOUS CALCAREOUS NANNOFOSSIL MARKERMICULA-PRINSII AT THE CRETACEOUS-TERTIARY BOUNDARY IN THE UM-SOHRYNGKEW SECTION, MEGHALAYA, INDIA, Current Science, 69(12), 1995, pp. 1012-1017
Citations number
38
Categorie Soggetti
Multidisciplinary Sciences
Journal title
ISSN journal
00113891
Volume
69
Issue
12
Year of publication
1995
Pages
1012 - 1017
Database
ISI
SICI code
0011-3891(1995)69:12<1012:SOTTCC>2.0.ZU;2-Q
Abstract
A diagnostic Calcareous nannofossil assemblage, representing the termi nal Maastrichtian Micula prinsii zone, is discovered below the iridium -spike bearing clay-layer in the Um Sohryngkew section, Meghalaya. Its significance for the precise demarcation of the K/T boundary, providi ng crucial evidence for the presence of the youngest Cretaceous sedime nts in a continuous, bioturbation-free calcareous shale sequence, is d emonstrated.