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During a mountain building phase, the sedimentary rocks may be buried deeply and subjected to heat and pressure causing certain minerals to form which were not present in the original rock.
Also, an igneous intrusion may cause adjoining sediments to be altered in a contact metamorphism leading minerals such as garnets to form.
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Is chalcopyrite metamorphic sedimentary or igneous?
Chalcopyrite is primarily an igneous mineral, formed in hydrothermal veins through the crystallization of hot, metal-rich fluids. It can also occur in sedimentary rocks as a secondary mineral. Metamorphic rocks may contain chalcopyrite if it was present in the original rock or introduced during metamorphism.
How are sedimentary and metamorphic rocks similar and different?
They are both rocks. Sedimentary can contain metamorphic rocks. and vice versa.
What type of rocks weather and erode to form sedimentary rocks?
Igneous, metamorphic, and existing sedimentary rocks can weather and erode to form sedimentary rocks. Igneous and metamorphic rocks can break down into sediments through processes like weathering and erosion, which then may accumulate and lithify into sedimentary rocks. Existing sedimentary rocks can also be reworked and lithified to form new sedimentary rocks through processes like compaction and cementation.
Metamorphic rocks that don't have layers?
Metamorphic rocks without visible layering are typically formed under conditions of high temperature and pressure that cause the minerals within the rock to recrystallize. This may result in a homogeneous texture without distinct layers or bands. These rocks may still exhibit foliation or other textures that indicate their metamorphic origin, even if they lack visible layering.
What is the difference between sedimentary and metamorphic rocks?
Sedimentary rocks are formed from the accumulation and compression of sediments, while metamorphic rocks are formed from the alteration of existing rocks due to heat, pressure, or chemical reactions. Sedimentary rocks are typically layered and can contain fossils, while metamorphic rocks have a more crystalline structure and may exhibit foliation.
