Variation of poison's ratio across varied lithology - a crustal study. | [Geological Bulletin of the Punjab University • 1990]

Author(s):

1. Mubrarik Ali: Earth Science Department, Ouaid-i-Azam University, Islamabad, Pakistan

2. Gulraiz Akhtar: Earth Science Department, Ouaid-i-Azam University, Islamabad, Pakistan

3. Umar Farooq: Institute of Geology, Punjab University, Quaid- i-Azam Campus, Lahore, Pakistan

4. M. Rustam Khan: Institute of Geology, Azad Jammu and Kashmir University, Muzaffarabad, Pakistan

5. Abdul Waheed Jarral: Institute of Geology, Azad Jammu and Kashmir University, Muzaffarabad, Pakistan

Abstract:

Poisson's ratio being a function of Vp and Vs is exceptionally low in quartz and high in hydrous minerals, and fluctuates significantly over varied mineral assemblages. This behaviour of the Poisson's ratio provides an invaluable control in the seismic study of lateral lithological variations. Model array of the Lewisian Units Seismic Traverse in the Lewisian Metamorphic Complex of NW Britain shows significant change in the Poisson's ratio across varied lithology, and suggests hydrated nature of the lower crust. Study of Poisson's ratio in Pakistan would reveal convincing evidence to provide crustal model.

Page(s): 25-31

DOI: DOI not available

Published: Journal: Geological Bulletin of the Punjab University, Volume: 25, Issue: , Year: 1990

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