Pic of the day #15 (Lithostatic Vs Hydrostaic pressure)

Pic courtesy: Earth Structure – An introduction to structural geology and toctonics

1. Armaan Ameen says:

When differential Stress can have an absolute value greater than Sigma1???

1. Geology Concepts says:

Differential stress value is given by : (?1-?3)
Mathematically,
?1 – ?3 > ?1 (we want this condition to be true)
Solving the inequality we will get
-?3 > 0
?3 < 0
For (?1-?3) value to be greater than ?1, there is only one condition which is when ?3 is negative.
We know that, ?3 will be negative in tensile domain i.e. the left hand side of the Mohr’s plot

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