Question

Classity sedimentary rock on the basis of origin of sediments. Give examples

Answer 1

1. clastic sedimentary rocks
2. organic sedimentary rocks
3. chemical sedimentary rocks

sedimentary rocks are rocks formed from the accumulation of sediments. sedimentary rocks can be classified into three categories based on the origin of the sediments

clastic sedimentary rocks are sedimentary rocks formed from the rock fragments and sediments that originated from rocks with silicate minerals. clastic sedimentary rocks are also divided depending on the size of the particles. example of clastic sedimentary rocks include; quartz, feldspar and mica

chemical sedimentary rocks are sedimentary rocks formed from dissolved minerals that are precipitated from water and hence minerals remain behind. example of chemical sedimentary rocks include gypsum, chalk