How to describe the structure of the pebbly sandstone?
Conglomerate structure maturity is low, with gravel as the skeleton of the pore space in whole or in part by sand particles filled in by the sand composition of the pore, and clay matrix filling, a double modal complex or complex modal structure; common normal grading, grading the level of graded bedding. Common scour structure and overlap scour structure. The clastic rocks in the sedimentary rocks are formed by cementation and solidification.
According to the content of gravel to determine the name, gravel content of less than 15% is called gravel siltstone, greater than the name of gravel containing silty sandstone (15%).
Sandy conglomerate belongs to complex sand conglomerate, which is mainly composed of sandy conglomerate, pebbly sandstone and conglomerate sandstone. Fillings conglomerate are mainly clay fine matrix (including plaster, clay mud, cloud of mud and sand, medium) silty coarse matrix; cementation dominated by carbonate, chlorite and a small amount of pyrite.
