The microfacies and diagenesis of the Kingriali Formation, Kala Chitta Range, Pakistan. | [Geological Bulletin of the Punjab University • 2002]

Author(s):

1. Riaz Ahmad Sheikh: Institute of Geology, Punjab University, Lahore, Pakistan

2. Shahid Ghazi: Institute of Geology, Punjab University, Lahore, Pakistan

3. M. Kaleem Akhter Qureshi: Geological Survey of Pakistan, Lahore, Pakistan

4. M. Amjad Awan: Institute of Geology, University of Azad Jammu & Kashmir, Muzaffarabad, Pakistan

Abstract:

Microfacies analysis of the Kingriali Formation of four systematically measured sections from Chapra, Surg. Chak Jabbi and Sakhi Zinda Pir localities is presented for the first time from the Kala Chitta Range. The Kingriali Formation consists of limestones and dolomitic limestones. The cathodoluminescence study has revealed that dolomite crystals which under normal petrographic microscope appeared to be of the same composition, are zoned and zones of at least three generations have been identified. The nature of dolomite crystals in the dolomitised parts of Kingriali Formation indicate varying nature of dolomitizing fluids. Secondary porosity due to dissolutions of dolomite crystals and enlarged fractures have been noticed under cathodoluminescence microscope. The different composition of various zones of zoned dolomite crystals have been confirmed by wavelength dispersive spectometery.

Page(s): 67-76

DOI: DOI not available

Published: Journal: Geological Bulletin of the Punjab University, Volume: 37, Issue: 1, Year: 2002

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