Abstract:

The Devonian in Kokuya is a distinct coarsing-upward wave-controlled continental shelfto wave-controlled delta sequence. The wave-controlled continental shelf factes includes 9 microfacies as Streaky mud, lenticular allochemical rock, laminated and cross bedding sandstone, large cross bedding sandsone, shell debris oolitic sparite, bioclastic limestone micro facies. The wave-controlled delta factes include prodelta mud, sheet sandstone, current laminated siltstone, subaqueous distributary channel, littoral bar, beach dum, distributary channel, fload plain and branch-channel inlet micro factes. The characteristics of the above mentioned micro factes are described in this paper.