STUDY OF PLANKTONIC FORAMINIFERA FROM THE CRETACEOUS-PALEOGENE BOUNDARY IN KHUZDAR DISTRICT, BALOCHISTAN

P. A. USMANI, I. A. BROHI, R. A. LASHARI, H. NAZ

Abstract


The study of Planktonic foraminifera in relation to the Cretaceous – Paleogene boundary in Khuzdar district, Baluchistan, Pakistan have been carried out based on examination of material from three section of Cretaceous - Paleogene sequence, named: - (1) PAK. Section (2) MG. Section (3) HR. Section The focus  yielded  is  typical  Cretaceous - Early  Tertiary  Planktonic  Foraminifera such as  Globotruncana contusa, Globotruncana stuarti, Globotruncana ventricosa,  Globotruncana  arca, Recemiguembelina fructicosa Pseudoguemblina elagans  and  appearance of  Parasubbotina  pseudobulloides in Danian of PAK. Section. In  MG. and HR. Section  the  presence  of  Parasubbotina pseudobulloides,   Morzovella  aequa,  Morozovella  acuta,  Hantkenina dumblie, Globigerina lozanoi, Globigerina pseudovenezuela and Ghagni the zone marker of Paleocene to Late Eocene and also presence of Globigerina taupemsis, Dentaglobigerina carpulenta, zone  marker  Oligocene  strata  in  MG. and  HR. Section. The age of the redefined Jamburo Group ranges from the Mastrichitian to the Middle Oligocene. The Cretaceous –Paleogene boundary is determine above the Pab sandstone and base of the Jamburo Group in PAK. Section and below the gray breciated limestone in MG. Section, where as in HR. Section it is located between limestone and shale of the Jamburo Group.


Full Text:

PDF

Refbacks

  • There are currently no refbacks.


Copyright (c) 2015 Sindh University Research Journal - SURJ (Science Series)

 Copyright © University of Sindh, Jamshoro. 2017 All Rights Reserved.
Printing and Publication by: Sindh University Press.