hydrothermal rocks cliffsnotes

Geothermal Energy

Geothermal energy is the energy produced when heated groundwater is tapped by wells and used to generate electricity. Although geothermal energy is one of the cleanest forms of energy, hydrogen sulfide gases and other toxic compounds may be associated with it. Compared to that of other sources of energy, the use of geothermal energy is not ...

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Geology

Geology. ×. ( n) A regional or social variety of a language distinguished by pronunciation, grammar, or vocabulary, especially a variety of speech differing from the standard literary language or speech pattern of the culture in which it exists: Cockney is a dialect of English. from The American Heritage® Dictionary of the English Language ...

Minerals and Rocks

Minerals are the building blocks of the earth. A mineral is a combination of elements that forms an inorganic, naturally occurring solid of a definite chemical structure. For example, SiO 2 is always the mineral quartz. A rock is a solid material that is composed of various minerals.. Minerals can have a variety of crystalline shapes. The shape of the crystal is dependent on the sizes of the ...

Rock Textures

Rock Textures. The origin of a rock can often be detected from its texture —the sizes and orientations of its mineral or rock fragment components. Most extrusive rocks are fine grained, meaning their mineral components (grains) are less than 1 millimeter in diameter. Lava flow rocks typically have a chilled margin that is very fine grained ...

Hydrothermal Rocks

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Hydrothermal Rocks

Hydrothermal essentially means "hot water.". Hydrothermal rocks are those rocks whose minerals crystallized from hot water or whose minerals have been altered by hot water passing through them. Thus, these rocks are distinct from metamorphic rocks, which are created by solid‐state mineral transformations. In fact, many hydrothermal rocks ...

Weathering

Weathering. The process of weathering alters rocks at the earth''s surface and breaks them down over time into fine‐grained particles of sediment and soil. Weathering is the result of the interactions of air, water, and temperature on exposed rock surfaces and prepares the rock for erosion. Erosion is the movement of the particles by ice, wind ...

The Rock Cycle

The Rock Cycle. The rock cycle is illustrated in Figure . Igneous rocks are produced when molten rock cools and solidifies. When exposed at the earth''s surface, the rock is broken down into tiny particles of sediment by weathering and erosion. This weathered material is carried by water or wind to form sedimentary deposits such as beaches, sand ...

Metamorphic Rock Types

A quartz‐rich rock such a sandstone, for example, is called a quartzite when it has been metamorphosed. A metamorphosed limestone is called a marble. When rocks (especially shales and basalts) are affected by contact metamorphism, they often develop a texture called hornfels. A hornfels rock is characterized by evenly distributed, very fine ...