Rocks
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Rocks are naturally occurring solids composed of two or more minerals. There are three main types of rocks: igneous, sedimentary, and metamorphic. Igneous rocks form from cooling magma underground or lava on the surface. Sedimentary rocks form from compressed sediments and often contain fossils. Metamorphic rocks were originally igneous or sedimentary rocks but were changed by heat and pressure in the Earth's crust. Rocks are constantly changing from one type to another through the rock cycle over millions of years.
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The Cache la Poudre River originates in Rocky Mountain National Park in Colorado and flows east through Roosevelt National Park, descending over 7,000 feet before joining the South Platte River. The canyon has been home to Native Americans for centuries, with evidence of their presence such as fire hearths, burial sites, and rock shelters. Igneous rocks form by the cooling and solidification of magma or lava, either below the surface as intrusive rocks or on the surface as extrusive rocks. Sedimentary rocks form through the deposition and compaction of sediment and cementation over time. Metamorphic rocks are formed when rocks are subjected to heat and pressure, causing them to change form.
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Boulders roll down from Mackay's Bluff due to erosion from the wind and sea, falling to the bottom of the hill and into the sea. As tides pull in and out, boulders are pushed on top of each other, getting smaller as they smash together over time. The tides then move the boulders alongshore via longshore drift to form the Boulder Bank near Nelson.
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3) This repeated freezing and thawing enlarges cracks until pieces of rock break off.
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1) Water expands slightly when it freezes, pushing cracks further apart.
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3) This repeated freezing and thawing enlarges cracks until pieces of rock break off.
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The document discusses the rock cycle and the three main types of rocks: sedimentary, igneous, and metamorphic. Sedimentary rocks are formed through the compression of sediments, igneous rocks form as magma and lava cool, and metamorphic rocks are formed from heat and pressure acting on existing rocks. The rock cycle shows how rocks continuously change between these three types through geological processes like weathering, erosion, sedimentation, and metamorphism. Rocks can go through the cycle many times, changing from one type to another and back again.
What are the properties of minerals and rocks
This document discusses the rock cycle and the three main types of rocks: sedimentary, igneous, and metamorphic. Sedimentary rocks are formed through the compression of materials like sand and shells. Igneous rocks form when magma cools, either underground to form intrusive igneous rocks like granite or above ground to form extrusive igneous rocks like basalt. Metamorphic rocks are formed from existing rocks that undergo heat or pressure and are transformed, such as limestone becoming marble. The rock cycle shows how rocks continuously change between these three types through geological processes like weathering, erosion, deposition, and metamorphism.
How Do Minerals and Rocks Form
Carla Johnson's PowerPoint for students who need to review how rocks and minerals are formed. Includes some slides that were used with a Clicker Quiz.
Rocks.pdf
The rock cycle document describes the three main types of rocks - igneous, sedimentary, and metamorphic - and how they are formed through different natural processes. Igneous rocks form when magma cools and solidifies. Sedimentary rocks form through the compaction and cementation of sediments. Metamorphic rocks form when existing rocks are changed by heat or pressure deep underground. Rocks are constantly being worn down by weathering and erosion and then reformed through processes like sedimentation, melting, and metamorphism, completing the continuous rock cycle.
Rocks
There are three main types of rocks: igneous, sedimentary, and metamorphic. Igneous rock forms when magma cools and solidifies either above or below the Earth's surface. Sedimentary rock forms through the compaction and cementation of sediments like sand, silt, and clay. Metamorphic rock forms when existing rock is transformed by heat, pressure, and chemical reactions when exposed to temperature and pressure changes within the Earth's crust.
Ch 10 Rocks
The document summarizes the three main rock types - igneous, sedimentary, and metamorphic rocks - and their characteristics and formation processes. Igneous rocks form from cooling magma, either underground as intrusive rocks like batholiths and dikes or above ground as extrusive rocks like lava flows. Sedimentary rocks form through the compaction and cementation of sediments like sand, silt, and clay. Metamorphic rocks form from existing rocks undergoing changes due to heat and pressure in processes like contact metamorphism or regional metamorphism.
22 3 rock cycle
The rock cycle document describes the three main types of rocks and how they are formed. Igneous rocks form from cooled magma, either deep underground forming coarse grains or near the surface forming fine grains. Sedimentary rocks form from compressed and cemented sediments at the surface. Metamorphic rocks form from intense heat and pressure transforming sedimentary and igneous rocks into denser forms with new minerals, without melting, deep within the earth's crust.
Rocks...
The document describes the processes of rock formation and weathering. Sedimentary rock forms through sedimentation, compaction and cementation as layers of rock particles are deposited and pressed together over long periods of time. Metamorphic and igneous rocks form through heat and pressure underground, with magma cooling to form igneous rock. Rocks at the surface weather through physical, chemical and biological processes, breaking down into particles that are eroded and transported by wind and water before settling and cementing into new sedimentary rock.
Rock Cycle
The document discusses the rock cycle, which describes how different types of rocks can be formed from one another through various geological processes. There are three main types of rocks - igneous, sedimentary, and metamorphic. Igneous rocks form when magma cools, sedimentary rocks form through the lithification of sediments, and metamorphic rocks form through the alteration of existing rocks due to heat and pressure in the Earth's crust. The rock cycle is continuous as one type of rock can transform into another through weathering, erosion, deposition, burial, and metamorphism.
Rocks and Landscapes by Leanne
The document discusses the three main types of rocks - igneous, sedimentary, and metamorphic. It describes the rock cycle by which rocks are formed from magma and transformed through weathering, sedimentation, and metamorphism. Key examples of rock types are discussed such as granite, limestone, chalk, slate, and marble.
Types of Rock
This document provides information about different types of rocks including their formation processes. It discusses igneous rocks such as granite and basalt which form from the cooling of magma. It also describes sedimentary rocks like limestone and coal which are formed by the accumulation and cementation of sediments. Additionally, it outlines metamorphic rocks such as marble and gneiss that form from the alteration of existing rocks through heat, pressure, and stress in the Earth. Key factors such as texture, mineral composition, and cooling rate influence the characteristics of igneous rocks, while layering and fossil content are important for sedimentary rocks. Metamorphic rocks exhibit foliated or non-foliated structures depending on the degree of recry
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Rocks
- 1. What are Rocks? By: Ticisa Jeffers
- 2. What are Rocks? Naturally occurring solid made up of 2 or more minerals.
- 3. Minerals Minerals are made of chemicals - either a single chemical or a combination of chemicals. Over 3000 known minerals Examples: Quartz, Emerald, Copper
- 4. Type of Rocks Igneous Sedimentary Metamorphic
- 5. Igneous Rocks Made from fire or heat Forms when volcanoes erupt and the liquid rock comes up to the earth's surface When the rock is liquid & inside the earth, it is called magma It cools very slowly and is very hard When the magma gets hard inside the crust, it turns into granite Most mountains are made of granite
- 7. Sedimentary Rocks Rock gets worn away due to erosion Rain, freeze/thaw cycle, wind and running water cause mountains to crumble, forming sediments Eventually most of the broken bits of the rock end up in the streams & rivers that flow down from the mountains sediments settle to the bottom of the lake or oceans they run into
- 8. Sedimentary Rocks Sedimentary rocks often have fossils in them. Examples: sandstone and shale
- 9. Metamorphic Rocks Originally igneous or sedimentary, but due to movement of the earth's crust changed Transformed by great heat or pressure Least common of the 3 kinds of rocks Example: Marble
- 10. The Rock Cycle Process that explains how rocks are constantly being formed, worn down and then formed again It takes thousands and millions of years for rocks to change. Weathering- the process of chemical or physical breakdown of the minerals in the rocks
- 11. The End