types of metamorphic rocks in kenya

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Metamorphic Rocks | Geology

Types of Metamorphic Rocks Metamorphic rock fall into two categories, foliated and unfoliated Most foliated metamorphic rocks originate from regional metamorphism Some unfoliated metamorphic rocks, such as hornfels, originate only by contact metamorphism, but others can originate either by contact metamorphism or by regional metamorphism...

List of Metamorphic Rocks

Rocks that have been formed from other rocks, sedimentary and igneous, by internal changes caused by pressure, heat, and the chemical action of the solutions and hot gases, are called metamorphic rocks and here is a list: Crystalline Limestone...

Types of Rocks

Types of Rocks in India Following are the classification of rocks in India: Rocks of the Archaean system: These rocks get this name as they are formed from the hot molten earth and are the oldest and primary rocksGneiss is an example and is found in Karnataka, Andhra Pradesh, Tamil Nadu, Madhya Pradesh, Orissa and some parts of Jharkhand and Rajasthan...

Types of Rocks

Aug 29, 2019· Types of Metamorphic Rocks There are many types of metamorphic rocks Marble; Limestone, a sedimentary rock changes to form marble The limestone, the source material for marble, forms when calcium carbonate precipitates out of water ,...

Types of Metamorphism

Metamorphic grad The different groups of minerals, or assemblages, that crystallize and are stable at the different pressure and temperature ranges during regional metamorphism distinguish distinct metamorphic grades, or fac The grades are usually named for the dominant minerals or colors that identify them (Figure 1)...

Metamorphic rock

Metamorphic rocks arise from the transformation of existing rock types, in a process called metamorphism, which means "change in form" The original rock is subjected to heat (temperatures greater than 150 to 200 °C) and pressure (100 megapascals (1,000 bar) or more), causing profound physical or chemical changeThe protolith may be a sedimentary, igneous, or existing metamorphic rock...

Types of Rocks: The Three Major Rock Groups

Like sedimentary rock, metamorphic rock is a secondary rock Metamorphic rocks are formed from pre-existing igneous, sedimentary, and even other metamorphic rocks In short, any rock ,...

METAMORPHIC ROCKS

Most metamorphic rocks occur in fold mountain belts or cratonic areas Such rocks cover large areas of the Earth's crust and are therefore termed regional metamorphic rocks They arise by the combined action of heat, burial pressure, differential stress, strain and fluids on pre-existing rocks...

List of rock types

The following is a list of rock types recognized by geologistsThere is no agreed number of specific types of rocks Any unique combination of chemical composition, mineralogy, grain size, texture, or other distinguishing characteristics can describe a rock type...

Metamorphic rock

Metamorphic rock - Metamorphic rock - Pressure: The pressure experienced by a rock during metamorphism is due primarily to the weight of the overlying rocks (ie, lithostatic pressure) and is generally reported in units of bars or kilobars The standard scientific notation for pressure is expressed in pascals or megapascals (1 pascal is equivalent to 10 bars) For typical densities of crustal ....

Name: Types of Rocks

Name: _____ Types of Rocks By Cindy Sherwood Mount Rushmore is an amazing sight, with the faces of four presidents carved into a giant rock mountain But even a small rock you find in your yard is pretty amazing After all, most rocks have been around for millions of years Some are billions of years old! Rocks come in many siz...

Metamorphic rocks

Jan 04, 2016· Types of Metamorphism, Texture, Structure of Metamorphic Rocks Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising If you continue browsing the site, you agree to the use of cookies on this website...

The Rock Cycle: Learn The Types Of Rocks & Minerals

Feb 21, 2016· The rock cycle by definition is a natural process by which sedimentary, igneous, and metamorphic rocks are created, changed from one type to another, and destroyed...

Metamorphic Rocks

Nov 15, 2018· Examples of Metamorphic Rocks Metamorphic rocks are less common than sedimentary and igneous rocks, but still make up approximately 12% of rocks at the surface Some of the most common types of metamorphic rocks are: Slate: Slate is a metamorphic rock that forms under relatively gentle heat and pressure conditions applied to shale, a ....

Metamorphic Rocks

These conditions often stretch, twist and fold the rock as it cools In metamorphic rocks some or all of the minerals in the original rock are replaced, atom by atom, to form new minerals Types of metamorphic rocks include gneiss, quartzite, marble, schist, soapstone, and phyllite Parks with examples of metamorphic rocks include...

Metamorphic Rocks

Metamorphic rocks are one of the three types of rock classifications, the other two being igneous and sedimentary Rocks are classified by the processes under which they were formed The differences in formation account for variations in the appearance of the rocks and, with some practice, you can learn to recognize the different types by sight...

3 Types of Rocks

Mar 09, 2017· In-depth video about rock cycle and types of rocks You will gain detail rock information and facts We will also see the uses of rocks and minerals in ,...