Discussion
Arrange the following formations into a north to south cross-section trend occurring within Central Indian Tectonic Zone :
(a) Son-Narmada South fault
(b) Sausar group
(c) Mahakoshar group
(d) Betul group
Answer: D
The key's north-to-south order is (c)-(a)-(d)-(b): Mahakoshal group, Son-Narmada South Fault, Betul group, Sausar group.
The Central Indian Tectonic Zone is bounded by the Son-Narmada North Fault and the Central Indian Shear. From north to south it contains the Mahakoshal belt (printed 'Mahakoshar'), lying between the Son-Narmada North and South Faults; the Son-Narmada South Fault; the Betul belt to its south; and the Sausar Group in the southern part of the zone, next to the Central Indian Shear and the Bastar craton.
The other orders place the Sausar Group north of Betul or the fault north of the Mahakoshal belt, which reverses parts of this arrangement.
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