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Metamorphic rock - Wikipedia


Metamorphic rocks arise from the transformation of existing rock types, in a process called ... They may be formed simply by being deep beneath the Earth's surface, ... For example, slate is a f...

Print Earth Science Exam #3 flashcards | Easy Notecards


As the rate of cooling increases, the size of the crystals that form ______. back 4 ... The common rock produced by the metamorphism of limestone is ______. ... What type of metamorphic rock will shale normally become following low-grade ...

Metamorphic Rocks


Regional Metamorphism occurs on a large scale, typically involving hundreds of ... It is the most widespread of the metamorphic types and is typical of the major ... This growth results in all the micas being oriented parallel to each other, which ... Such a low-grade metamorphic rock exhibiting a foliation, but with minerals too ....

Metamorphic Rocks Lesson #14 | Volcano World | Oregon State ...


Metamorphic rocks form from heat and pressure changing the original or ... are exposed to the surface after the softer outer layers of rocks are eroded away. ... Silt and clay can become deposited and compressed into the sedimentary rock shale. ... Slate is produced by low grade metamorphism, which is caused by relatively ...

Metamorphism and Metamorphic Rocks - Tulane University


Sep 17, 2015 ... Protolith can be any type of rock and sometimes the changes in ... these higher temperatures and pressures as they become buried deeper in the Earth. ... Examples of hydrous minerals that occur in low grade metamorphic rocks: ... due to tectonic uplift, one might expect metamorphism to a follow a reverse ...

Types of Metamorphism


Feb 16, 2011 ... Rocks can be subjected to these higher temperatures and pressures as ... Low grade metamorphic rocks are generally characterized by an abundance of hydrous minerals. ... As grade of metamorphism increases, hydrous minerals become less hydrous, .... Three kinds of criteria are normally employed.

Multiple Choice Questions Metamorphic Rocks


In regional metamorphism the source of increased temperature and pressure is ______ . ... is a high-grade, silicate-rich, mineralogically banded metamorphic rock ... of overlying rocks, and horizontal pressures developed as rocks become deformed ... Which of the following metamorphic rocks can not form from a shale?

Metamorphic Rock Classification - faculty at Chemeketa


The first thing to notice when you look at a metamorphic rock is its texture. ... and this usually depends on the type of rock it originally formed from (called the protolith). ... A product of low-grade metamorphism of shale or mudstone. ... (what type of rock it was prior to being metamorphosed), Shale or Mudstone, Slate, Phyllite ...

7.2 Classification of Metamorphic Rocks | Physical Geology


Some types of metamorphic rocks, such as quartzite and marble, which also form ... After both heating and squeezing, new minerals have formed within the rock, ... As already noted, slate is formed from the low-grade metamorphism of shale, ... typically only form from mudrock, schist, and especially gneiss, can form from a ...

Igneous and Metamorphic Rocks


Because of the great conveyor belt of plate tectonics, rocks can encounter a ... Increasing metamorphism resultsin different types of foliation. ... Particularly useful for determining PT conditions are the following metamorphic index minerals. Low metamorphic grade (low temperatures and pressures) - about 200 degrees C