EXPERIMENT STUDY OF DIAGENETIC VARIATION OF MODERN CARBONATE GRAINS

Based ox the diageaetic experiment of the modern carbonate sand sampled from Xisha Archipelago, this paper studis is detail the diageaetic changes of the tea- ture, construction and mineral composition of carbonate is higher temperature and higher pressure. The results of the experiment show that the sand grains of carbo- ante are micritized is three ways during the diageaetic process:(1) fractured micri- tizatioa, under higher pressure coarse carbonate grains are fractured into fine micri- tic grains with closely mosaic texture.