Examlex
How many distinct layers are typically found in the cerebral cortex?
Rock Types
Rock types are classifications of rocks based on their genesis, including three main categories: igneous, sedimentary, and metamorphic.
Conglomerate
A coarse-grained sedimentary rock composed of rounded fragments larger than 2 mm in diameter, embedded in a matrix of finer particles and cemented together.
Breccia
Breccia is a coarse-grained sedimentary rock composed of angular fragments of minerals or rocks cemented together, often formed in fault zones or as volcanic ejecta.
Sandstone
A sedimentary rock formed by the consolidation and compaction of sand, often containing minerals like quartz or feldspar.
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