Discussion

Match the following :

List I	List II
(a) Stock works	(1) Mineralisation along the creasts of anticline
(b) Saddle reefs	(2) Transverse and roughly parallel fraction filled with the ore
(c) Ladder veins	(3) An interlacing network of small ore-bearing veinlets
(d) Gash veins	(4) Small wedge-shaped fissures filled with the ore

Answer: C

The correct match is a-3, b-1, c-2, d-4.

A stockwork is an interlacing network of small ore-bearing veinlets cutting the host rock (a-3).
Saddle reefs are ore bodies formed along the crests of anticlines, where folding opens gaps between beds, as in the gold fields of Bendigo (b-1).
Ladder veins are short, roughly parallel transverse fractures filled with ore, arranged like the rungs of a ladder, typically across a dyke (c-2).
Gash veins are small wedge-shaped fissures filled with ore, often in limestone (d-4).

The other codes misplace the stockwork, the saddle reef or both.

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