Composition of the earth, Geologic Time, and Plate Tectonics
... Basalt: Dark, basic, aphanitic, extrusive igneous rock of pyroxene, calcium feldspar, and olivine. Basement rock: Crustal rocks, usually crystalline (igneous, metamorphic), below the sedimentary section of any area. Basin: A low area with no exterior drainage. Often an area of sedimentary deposition ...
... Basalt: Dark, basic, aphanitic, extrusive igneous rock of pyroxene, calcium feldspar, and olivine. Basement rock: Crustal rocks, usually crystalline (igneous, metamorphic), below the sedimentary section of any area. Basin: A low area with no exterior drainage. Often an area of sedimentary deposition ...
Igneous Rocks
... Plagioclase feldspar forms with a chemical composition that evolves (from Ca-rich to Na-rich) with decreasing temperature ...
... Plagioclase feldspar forms with a chemical composition that evolves (from Ca-rich to Na-rich) with decreasing temperature ...
Volcanos
... • Balsaltic magma – Forms when rocks in upper mantle melt – Less than 50% silica – Low viscosity – Found in quiet eruptions – Kilauea in Hawaii ...
... • Balsaltic magma – Forms when rocks in upper mantle melt – Less than 50% silica – Low viscosity – Found in quiet eruptions – Kilauea in Hawaii ...
Igneous Rocks and Processes
... Pumice: A lava containing a great deal of gas may froth out onto the surface, solidify very quickly, and form a rock with lots of very small vesicles. Pumice-type rocks are commonly glassy and are associated with obsidian flows. Pumice could also be said to have a vesicular texture, but there are tw ...
... Pumice: A lava containing a great deal of gas may froth out onto the surface, solidify very quickly, and form a rock with lots of very small vesicles. Pumice-type rocks are commonly glassy and are associated with obsidian flows. Pumice could also be said to have a vesicular texture, but there are tw ...
Chapter 7 Notes: Volcanoes Volcanoes and Plate Tectonics Volcano Magma
... Element: substance that cannot be broken down into another substance Compound: substance made of 2 or more elements ...
... Element: substance that cannot be broken down into another substance Compound: substance made of 2 or more elements ...
Lecture 6- September 26
... http://vulcan.wr.usgs.gov/Imgs/Jpg/Shasta/Images/Shasta84 _mount_shasta_with_shastina_1984_med.jpg ...
... http://vulcan.wr.usgs.gov/Imgs/Jpg/Shasta/Images/Shasta84 _mount_shasta_with_shastina_1984_med.jpg ...
What is a Rock?
... which blocks of the crust slide relative to one another. • When rocks that are under stress suddenly break along a fault, a series of ground vibrations, known as earthquakes, is set off. ...
... which blocks of the crust slide relative to one another. • When rocks that are under stress suddenly break along a fault, a series of ground vibrations, known as earthquakes, is set off. ...
rocks guided reading
... How are metamorphic rocks classified? __________________—mineral grains are flattened and line up in parallel _________________. Example: _______________formed from rearrangement of minerals in _________________ into bands How are metamorphic rocks classified? Non-Foliated—__________________________ ...
... How are metamorphic rocks classified? __________________—mineral grains are flattened and line up in parallel _________________. Example: _______________formed from rearrangement of minerals in _________________ into bands How are metamorphic rocks classified? Non-Foliated—__________________________ ...
BOOK REVIEWS 179 background information on the Data
... makes reference to plate tectonics, the lithosphere and asthenosphere, subduction, heat flow within the Earth, geothermal gradients, pressure within the Earth, magmatism on other planets, etc., and yet somehow fails to explain how igneous rocks are produced by partial fusion (this is explained in Ch ...
... makes reference to plate tectonics, the lithosphere and asthenosphere, subduction, heat flow within the Earth, geothermal gradients, pressure within the Earth, magmatism on other planets, etc., and yet somehow fails to explain how igneous rocks are produced by partial fusion (this is explained in Ch ...
The Golan Heights - The FEBS Congress 2017
... Scattered throughout the Golan Heights are a wide variety of sites that offer a broad spectrum of activities for tourists and hikers throughout the year. In the winter both amateur and professional skiers flock to the top of the snow-covered Hermon Mountain to enjoy its excellent ski conditions, the ...
... Scattered throughout the Golan Heights are a wide variety of sites that offer a broad spectrum of activities for tourists and hikers throughout the year. In the winter both amateur and professional skiers flock to the top of the snow-covered Hermon Mountain to enjoy its excellent ski conditions, the ...
1 Volcanic Hazards - Overview I. REVIEW OF VOLCANIC
... external occurrences of groundwater, surface water, snow and ice i) can create large steam explosions and increase explosivity of eruption ...
... external occurrences of groundwater, surface water, snow and ice i) can create large steam explosions and increase explosivity of eruption ...
Planet Earth - Manasquan Public Schools
... PHYSICAL WEATHERING Process in which rocks are broken down into smaller pieces without altering the rock’s composition. Ice and plants are two types of physical weathering ...
... PHYSICAL WEATHERING Process in which rocks are broken down into smaller pieces without altering the rock’s composition. Ice and plants are two types of physical weathering ...
controls (practical/laboratory) work, abstract
... rock by heat, pressure, or other natural agency B- denoting or relating to rock that has undergone transformation by heat, pressure, or other natural agencies, e.g. in the folding of strata or the nearby intrusion of igneous rocks C-is the solid mineral material forming part of the surface of the ea ...
... rock by heat, pressure, or other natural agency B- denoting or relating to rock that has undergone transformation by heat, pressure, or other natural agencies, e.g. in the folding of strata or the nearby intrusion of igneous rocks C-is the solid mineral material forming part of the surface of the ea ...
part – i (mcq) (compulsory)
... (a) with different chemical compositions but the same mineral structures (b) with different chemical compositions and different mineral structures (c) with similar chemical compositions and different mineral structures (d) with similar chemical compositions and similar mineral structures (e) None of ...
... (a) with different chemical compositions but the same mineral structures (b) with different chemical compositions and different mineral structures (c) with similar chemical compositions and different mineral structures (d) with similar chemical compositions and similar mineral structures (e) None of ...
Document
... through can be best described as a. compression and extension in the direction of the wave movement b. compression and extension in a direction perpendicular to wave movement c. shear motion perpendicular to the direction of wave movement d. shear motion in the direction parallel to ...
... through can be best described as a. compression and extension in the direction of the wave movement b. compression and extension in a direction perpendicular to wave movement c. shear motion perpendicular to the direction of wave movement d. shear motion in the direction parallel to ...
Powerpoint Presentation Physical Geology, 10/e
... igneous rock (most crystals >5 cm) formed when magma cools very slowly at depth • A glassy texture contains no crystals at all, and is formed by extremely rapid cooling • A porphyritic texture includes two distinct crystal sizes, with the larger having formed first during slow cooling underground an ...
... igneous rock (most crystals >5 cm) formed when magma cools very slowly at depth • A glassy texture contains no crystals at all, and is formed by extremely rapid cooling • A porphyritic texture includes two distinct crystal sizes, with the larger having formed first during slow cooling underground an ...
Density of Earth Materials Lab - Mercer Island School District
... pyroxene. Continental crust has more range in composition, but for our purposes we will assume that its average composition is similar to the rock granite. Granite is a felsic rock (which means it has a high feldspar and silica content), composed of quartz, potassium-rich feldspar, and mica. Mafic r ...
... pyroxene. Continental crust has more range in composition, but for our purposes we will assume that its average composition is similar to the rock granite. Granite is a felsic rock (which means it has a high feldspar and silica content), composed of quartz, potassium-rich feldspar, and mica. Mafic r ...
Rock Identification Lab
... This results in fast cooling of the lava and therefore crystal size is fine, meaning small. Sometimes the rock cools so quickly that no crystals form resulting in a glassy texture. A porphyritic texture is when an igneous rock exhibits two different grain sizes related to two different rates of cool ...
... This results in fast cooling of the lava and therefore crystal size is fine, meaning small. Sometimes the rock cools so quickly that no crystals form resulting in a glassy texture. A porphyritic texture is when an igneous rock exhibits two different grain sizes related to two different rates of cool ...
How Do Geologists Classify Rocks?
... tectonics in the rock cycle? • Plate movements start the rock cycle by help to form magma (the source of igneous rocks) and cause faulting, folding, and other motions of the crust that help to form sedimentary and metamorphic rocks. ...
... tectonics in the rock cycle? • Plate movements start the rock cycle by help to form magma (the source of igneous rocks) and cause faulting, folding, and other motions of the crust that help to form sedimentary and metamorphic rocks. ...
File
... The minerals do not have time to form, so they are microscopic. Examples : obsidian, basalt ...
... The minerals do not have time to form, so they are microscopic. Examples : obsidian, basalt ...
How Do Geologists Classify Rocks?
... tectonics in the rock cycle? • Plate movements start the rock cycle by help to form magma (the source of igneous rocks) and cause faulting, folding, and other motions of the crust that help to form sedimentary and metamorphic rocks. ...
... tectonics in the rock cycle? • Plate movements start the rock cycle by help to form magma (the source of igneous rocks) and cause faulting, folding, and other motions of the crust that help to form sedimentary and metamorphic rocks. ...
Basalt
Basalt (pronounced /bəˈsɔːlt/, /ˈbæsɒlt/, /ˈbæsɔːlt/, or /ˈbeɪsɔːlt/)is a common extrusive igneous (volcanic) rock formed from the rapid cooling of basaltic lava exposed at or very near the surface of a planet or moon. Flood basalt describes the formation in a series of lava basalt flows.