What is the difference in sedimentary rocks and metamorphic rocks?
Sedimentary rocks are formed by the accumulation of other eroded substances, while Metamorphic rocks are formed when rocks change their original shape and form due to intense heat or pressure.
What are examples of sedimentary and metamorphic rocks?
Examples include sandstone, coal and chalk. Some sedimentary rocks contain fossils (bones or shells of living things that were buried long ago and have turned to stone). Metamorphic rocks are formed when other rocks are changed due to heat or pressure. Examples include slate and marble.
What are sedimentary rocks easy definition?
Sedimentary rocks are formed from pre-existing rocks or pieces of once-living organisms. They form from deposits that accumulate on the Earth’s surface. Sedimentary rocks often have distinctive layering or bedding.
What are the 4 classes of sedimentary rocks?
Sedimentary rocks can be subdivided into four groups based on the processes responsible for their formation: clastic sedimentary rocks, biochemical (biogenic) sedimentary rocks, chemical sedimentary rocks, and a fourth category for “other” sedimentary rocks formed by impacts, volcanism, and other minor processes.
What are the names of some sedimentary rocks?
There are three basic types of sedimentary rocks: Clastic sedimentary rocks such as breccia, conglomerate, sandstone, siltstone, and shale are formed from mechanical weathering debris. Chemical sedimentary rocks such as rock salt, iron ore, chert , flint, some dolomites , and some limestones, form when dissolved materials precipitate from solution.
What are the different types of metamorphic rocks?
There are two basic types of metamorphic rocks. Foliated metamorphic rocks such as gneiss, phyllite, schist, and slate have a layered or banded appearance that is produced by exposure to heat and directed pressure. Non-foliated metamorphic rocks such as hornfels, marble, quartzite,…
What are the features of metamorphic rocks?
Major features. The most obvious features of metamorphic rocks are certain planar features that are often termed s-surfaces. The simplest planar features may be primary bedding (akin to the layering in sedimentary rocks).