Abstract

The presence of ignimbrite is described for the first time in Malaya. The field relations and a detailed study of the petrography support the interpretation that the 15-mile ridge outcropping in central Kelantan, Malaya, is a thick 'dyke' of ignimbrite which plugs an old feeding fissure. The Temangan ignimbrite has a texture which is intermediate between tuff and rhyolite lava. The evidence suggests that the Temangan ignimbrite was emplaced as a tuff flow.

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