Types of Igneous Rock - hrsbstaff.ednet.ns.ca
... There are four main kinds of igneous rock. 1) Felsic rocks (also sometimes called silicic rocks) contain 65% or more of the mineral silica quartz (SiO2). They also contain feldspar, a mineral made of potassium, sodium, and aluminum. The “fel” in felsic comes from feldspar. 2) Intermediate rocks have ...
... There are four main kinds of igneous rock. 1) Felsic rocks (also sometimes called silicic rocks) contain 65% or more of the mineral silica quartz (SiO2). They also contain feldspar, a mineral made of potassium, sodium, and aluminum. The “fel” in felsic comes from feldspar. 2) Intermediate rocks have ...
Lecture 5. Igneous Rocks
... red or have a greenish tint. It is a dense volcanic glass, usually composed of rhyolite, rich in iron and magnesium. Obsidian is formed when the lava cools so quickly that crystals do not have time to grow. Obsidian fractures with very sharp edges. It was used by Stone Age cultures for making knives ...
... red or have a greenish tint. It is a dense volcanic glass, usually composed of rhyolite, rich in iron and magnesium. Obsidian is formed when the lava cools so quickly that crystals do not have time to grow. Obsidian fractures with very sharp edges. It was used by Stone Age cultures for making knives ...
For a PDF version of the
... Components range trom large boulders to molecules dissolved in water Sediment is deposited by wind, water. ice, or mineral-secretmg organlsms Loose sediment is lithified (convcrted into solid rock) • precipitation of a cementing material around individual grains • compaction • crystallization • stra ...
... Components range trom large boulders to molecules dissolved in water Sediment is deposited by wind, water. ice, or mineral-secretmg organlsms Loose sediment is lithified (convcrted into solid rock) • precipitation of a cementing material around individual grains • compaction • crystallization • stra ...
sedimentary rocks
... Precipitation is caused by the increasing concentration of ions in water, because there is an upper limit to how much of each ion can be dissolved in water. Precipitation is also affected by temperature. Calcite, for example, dissolves more readily in cold water and precipitates in warmer water. The ...
... Precipitation is caused by the increasing concentration of ions in water, because there is an upper limit to how much of each ion can be dissolved in water. Precipitation is also affected by temperature. Calcite, for example, dissolves more readily in cold water and precipitates in warmer water. The ...
What are rocks? - The Geographer online
... Igneous rocks are formed from molten rock called magma. They are mostly crystalline (made up of interlocking crystals) and usually very hard to break. E.g. granite, basalt, andesite. ...
... Igneous rocks are formed from molten rock called magma. They are mostly crystalline (made up of interlocking crystals) and usually very hard to break. E.g. granite, basalt, andesite. ...
Rocks and Weathering
... A. Weathering – the process that breaks down rock and other substances at Earth’s surface. B. Erosion – the movement of rock particles by wind, water, ice, and gravity. ...
... A. Weathering – the process that breaks down rock and other substances at Earth’s surface. B. Erosion – the movement of rock particles by wind, water, ice, and gravity. ...
MCQ - tcspgnn
... large crystals because the magma cooled rapidly B small crystals because the magma cooled slowly C large crystals because the magma cooled slowly D small crystals because the magma cooled rapidly ...
... large crystals because the magma cooled rapidly B small crystals because the magma cooled slowly C large crystals because the magma cooled slowly D small crystals because the magma cooled rapidly ...
Slide 1
... Precambrian) Shield • the geologic core of the country • ancient (4 billion years in some places), hard igneous rock from which all the other areas were created • used to be a huge mountain range ...
... Precambrian) Shield • the geologic core of the country • ancient (4 billion years in some places), hard igneous rock from which all the other areas were created • used to be a huge mountain range ...
Relative Age Dating
... • Fossils are the evidence or remains of once-living organisms. • Sometimes (although it is very uncommon) the actual remains of the organism are preserved in their original form. • Need perfect conditions for this to happen. • Mummification, freezing, encasement in amber, encasement in petroleum. ...
... • Fossils are the evidence or remains of once-living organisms. • Sometimes (although it is very uncommon) the actual remains of the organism are preserved in their original form. • Need perfect conditions for this to happen. • Mummification, freezing, encasement in amber, encasement in petroleum. ...
Earth Science Mod E Unit 3 Minerals and Rocks - St. John
... Your student’s science class will soon begin studying the unit entitled “Minerals and Rocks.” Our study of this unit focuses on the big idea and essential questions listed below. Unit 3: Minerals and Rocks Big Idea Minerals and rocks are basic building blocks of Earth and can change over time from o ...
... Your student’s science class will soon begin studying the unit entitled “Minerals and Rocks.” Our study of this unit focuses on the big idea and essential questions listed below. Unit 3: Minerals and Rocks Big Idea Minerals and rocks are basic building blocks of Earth and can change over time from o ...
Metamorphic Rock
... up in rock that is deeply buried under other rock formations, or when large pieces of the Earth’s crust collide. ...
... up in rock that is deeply buried under other rock formations, or when large pieces of the Earth’s crust collide. ...
9. What are some disadvantages of burning fossil fuels for energy
... 27.rock that is forced downward and is altered due to heat and pressure ...
... 27.rock that is forced downward and is altered due to heat and pressure ...
Chapter 6 - Sedimentary Rock
... • How do we know whether sedimentary rocks were deposited on – continents—river floodplains or desert sand dunes? – at the water's edge? – in the sea? ...
... • How do we know whether sedimentary rocks were deposited on – continents—river floodplains or desert sand dunes? – at the water's edge? – in the sea? ...
Crystallization
... Has a fixed chemical formula Has an orderly crystalline structure Over 4000 minerals! But only eight groups commonly found in earth’s rocks. ...
... Has a fixed chemical formula Has an orderly crystalline structure Over 4000 minerals! But only eight groups commonly found in earth’s rocks. ...
Nonfoliated Metamorphic Rock
... are not arranged in planes or bands is called nonfoliated. Notice that the rocks shown in Figure 6 do not have mineral grains that are aligned. This lack of aligned mineral grains is the reason these rocks are called nonfoliated rocks. Nonfoliated rocks are commonly made of one or only a few mineral ...
... are not arranged in planes or bands is called nonfoliated. Notice that the rocks shown in Figure 6 do not have mineral grains that are aligned. This lack of aligned mineral grains is the reason these rocks are called nonfoliated rocks. Nonfoliated rocks are commonly made of one or only a few mineral ...
Complete the following on a separate sheet of paper. Use complete
... What is the difference between intrusive and extrusive igneous rocks? Describe the main difference between granitic and basaltic rocks. How does the rate of cooling of magma or lava affect the texture of igneous rocks? How do coarse-grained igneous rocks form? How are igneous rocks classified accord ...
... What is the difference between intrusive and extrusive igneous rocks? Describe the main difference between granitic and basaltic rocks. How does the rate of cooling of magma or lava affect the texture of igneous rocks? How do coarse-grained igneous rocks form? How are igneous rocks classified accord ...
LSU Museum of Natural Science: Hunting for Fossils
... that have been preserved in sedimentary rocks. They show that the organisms were in the area. They include: ...
... that have been preserved in sedimentary rocks. They show that the organisms were in the area. They include: ...
How are rocks formed?
... • HOW THEY FORM: compaction (squish) and cementation (stick) of sediments Forms near bodies of water or where bodies of water used to be ...
... • HOW THEY FORM: compaction (squish) and cementation (stick) of sediments Forms near bodies of water or where bodies of water used to be ...
1 What is a rock
... 3 Rocks are classified by their composition and texture along with the process that forms them. 4 Igneous rocks are formed from magma or lave cooling. 5 Intrusive igneous rocks cool slowly inside the earth creating course crystals and extrusive igneous rocks cool fast on the surface of the earth wit ...
... 3 Rocks are classified by their composition and texture along with the process that forms them. 4 Igneous rocks are formed from magma or lave cooling. 5 Intrusive igneous rocks cool slowly inside the earth creating course crystals and extrusive igneous rocks cool fast on the surface of the earth wit ...
geologic history 2
... • Sometimes layers of rock are missing • There is a break or gap of geologic time not represented by the layers in an area. The gap represents an unknown length of time • No way of knowing exactly what happened but we do know UPLIFT exposed rocks to weathering and erosion. • Rocks above unconformity ...
... • Sometimes layers of rock are missing • There is a break or gap of geologic time not represented by the layers in an area. The gap represents an unknown length of time • No way of knowing exactly what happened but we do know UPLIFT exposed rocks to weathering and erosion. • Rocks above unconformity ...
Earth History
... • Sometimes layers of rock are missing • There is a break or gap of geologic time not represented by the layers in an area. The gap represents an unknown length of time • No way of knowing exactly what happened but we do know UPLIFT exposed rocks to weathering and erosion. • Rocks above unconformity ...
... • Sometimes layers of rock are missing • There is a break or gap of geologic time not represented by the layers in an area. The gap represents an unknown length of time • No way of knowing exactly what happened but we do know UPLIFT exposed rocks to weathering and erosion. • Rocks above unconformity ...
Weathering, Erosion, & Deposition
... How does weathering, erosion, & deposition act in a cycle to change the Earth’s surface? -breaks down the Earth ...
... How does weathering, erosion, & deposition act in a cycle to change the Earth’s surface? -breaks down the Earth ...
Sedimentary rock
Sedimentary rocks are types of rock that are formed by the deposition of material at the Earth's surface and within bodies of water. Sedimentation is the collective name for processes that cause mineral and/or organic particles (detritus) to settle and accumulate or minerals to precipitate from a solution. Particles that form a sedimentary rock by accumulating are called sediment. Before being deposited, sediment was formed by weathering and erosion in a source area, and then transported to the place of deposition by water, wind, ice, mass movement or glaciers which are called agents of denudation.The sedimentary rock cover of the continents of the Earth's crust is extensive, but the total contribution of sedimentary rocks is estimated to be only 8% of the total volume of the crust. Sedimentary rocks are only a thin veneer over a crust consisting mainly of igneous and metamorphic rocks. Sedimentary rocks are deposited in layers as strata, forming a structure called bedding. The study of sedimentary rocks and rock strata provides information about the subsurface that is useful for civil engineering, for example in the construction of roads, houses, tunnels, canals or other structures. Sedimentary rocks are also important sources of natural resources like coal, fossil fuels, drinking water or ores.The study of the sequence of sedimentary rock strata is the main source for scientific knowledge about the Earth's history, including palaeogeography, paleoclimatology and the history of life. The scientific discipline that studies the properties and origin of sedimentary rocks is called sedimentology. Sedimentology is part of both geology and physical geography and overlaps partly with other disciplines in the Earth sciences, such as pedology, geomorphology, geochemistry and structural geology.