Sankha,

  Look in the book ‘Reservoir Geomechanics’ by Mark Zoback (and his publications on SAFOD and the KTB hole). You can estimate differential stress with depth for any specified tectonic regime for the upper crust by taking advantage of the fact that the coefficient of sliding friction is more or less independent of rock type at between 0.6 and 0.8, and this sets an upper limit on differential stress. Then you can calculate likely maximum  the differential stress with depth as a best estimate.

Ernie Rutter

From: Tectonics & structural geology discussion list [mailto:[log in to unmask]] On Behalf Of sankha acharyya
Sent: 01 June 2018 13:22
To: [log in to unmask]
Subject: Differential stress vs depth