Question

Sedimentary rocks formed through cementation of formerly loose grains of sediment derived from weathering of preexistent rock are called _______ sedimentary rocks. A very fine- grained example, which typically splits into thin sheets, is called ________ .

Answer 1

Clastic sedimentary rocks are formed from the weathering and erosion of pre-existing rocks, followed by deposition, compaction, and cementation, with shale being a fine-grained example.

Step-by-step explanation:

Sedimentary rocks formed through the cementation of formerly loose grains of sediment resulting from the weathering of pre-existing rocks are called clastic sedimentary rocks. An example of a very fine-grained clastic sedimentary rock that typically splits into thin sheets is shale. These rocks take shape under the processes of weathering and erosion, followed by sediment deposition, compaction, and finally cementation, where minerals such as calcite, quartz, and pyrite act as a 'glue' to bind sediment grains together.