Discussion

Match the following :

List I	List II
(1) Dissemination	(i) Chromite deposit of Keonjhar (Odisha)
(2) Segregation	(ii) Titaniferous magnetite deposit of Adivondaek region of New York
(3) Residual liquid segregation	(iii) Diamond deposit of Panna
(4) Residual liquid injection	(iv) Titaniferous magnetite bands of Bushveld Complex

Answer: A

The correct match is 1-iii, 2-i, 3-iv, 4-ii.

This follows Bateman's classification of early and late magmatic deposits:

Dissemination: diamonds scattered through kimberlite, as at Panna (iii).
Segregation: early crystallised chromite settling into layers, as in the chromite of Keonjhar, Odisha (i).
Residual liquid segregation: iron-titanium-rich residual magma forming titaniferous magnetite bands in the Bushveld Complex (iv).
Residual liquid injection: such residual liquid injected into the surrounding rock, as in the titaniferous magnetite of the Adirondack region, New York (ii).

The other codes swap the two titaniferous magnetite examples or move the diamonds.

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