![lab 8: common minerals in metamorphic rocks](http://s1.studyres.com/store/data/001263124_1-d7a8f22e47ceebf3bc3e4fcb59adfc02-300x300.png)
lab 8: common minerals in metamorphic rocks
... Shales are composed of clays, which are Al-rich silicates. Therefore shales are Si-Al-rich rocks, and contain variable amounts of K, Fe, and Mg. When shale is subjected to new pressure and temperature conditions during metamorphism, these chemical components will rearrange themselves to form a new a ...
... Shales are composed of clays, which are Al-rich silicates. Therefore shales are Si-Al-rich rocks, and contain variable amounts of K, Fe, and Mg. When shale is subjected to new pressure and temperature conditions during metamorphism, these chemical components will rearrange themselves to form a new a ...
File
... What Erupts from a Volcano? • Types of Lava The viscosity of lava, or how lava flows, varies greatly. The next slide shows four different types of lava. • Types of Pyroclastic Material Pyroclastic material forms when magma explodes from a volcano and solidifies in the air. The size of pyroclastic ma ...
... What Erupts from a Volcano? • Types of Lava The viscosity of lava, or how lava flows, varies greatly. The next slide shows four different types of lava. • Types of Pyroclastic Material Pyroclastic material forms when magma explodes from a volcano and solidifies in the air. The size of pyroclastic ma ...
View Sample
... Temperatures are lower than in the deepest layers Highest temperatures around 375 c There are 2 types of crusts; Continental crust and Oceanic crust Continental crust This forms the surface of all the continents and surrounding shallow seas It is the thickest part of the crust (average of 45km thick ...
... Temperatures are lower than in the deepest layers Highest temperatures around 375 c There are 2 types of crusts; Continental crust and Oceanic crust Continental crust This forms the surface of all the continents and surrounding shallow seas It is the thickest part of the crust (average of 45km thick ...
metam
... REGIONAL METAMORPHISM - Subduction and plate collision; most intense where continents collide Affects broad regions Mountain ranges and continental interiors ...
... REGIONAL METAMORPHISM - Subduction and plate collision; most intense where continents collide Affects broad regions Mountain ranges and continental interiors ...
Geochemistry of volcanic rocks from the Geysers geothermal area
... There is general consensus that more evolved magmas in the Clear Lake area and other Coast Range volcanic fields are affected by significant degrees of crustal contamination (e.g., Dickinson, 1997). For example, oxygen, strontium and neodymium isotopic data clearly indicate a significant crustal com ...
... There is general consensus that more evolved magmas in the Clear Lake area and other Coast Range volcanic fields are affected by significant degrees of crustal contamination (e.g., Dickinson, 1997). For example, oxygen, strontium and neodymium isotopic data clearly indicate a significant crustal com ...
Igneous Rocks and Intrusive Igneous Activity
... May form from basaltic magma Form at Earth’s surface Have texture Made of small grains Granite is an example Form as a result of melting Present at Earth’s surface only after erosion Contains minerals Classified based on color Dark-colored examples have low silica content Contain visible grains ...
... May form from basaltic magma Form at Earth’s surface Have texture Made of small grains Granite is an example Form as a result of melting Present at Earth’s surface only after erosion Contains minerals Classified based on color Dark-colored examples have low silica content Contain visible grains ...
Helium - Adrian Jones - Deep Carbon Observatory
... have been mined from pipes. (High 3He/4He has been reported in diamonds of unknown origin, but in these cases it is has been suggested that they may be “detrital” diamonds, i.e., they may have lain on the surface for a long time and acquired “cosmogenic” 3He. Although this is conjecture, it is safer ...
... have been mined from pipes. (High 3He/4He has been reported in diamonds of unknown origin, but in these cases it is has been suggested that they may be “detrital” diamonds, i.e., they may have lain on the surface for a long time and acquired “cosmogenic” 3He. Although this is conjecture, it is safer ...
Getting to Know: Where Volcanoes Form
... Why does the molten rock rise to the surface? Molten rock rises to the surface because it has a different density than the surrounding rock. Density is a measure of the amount of mass in a given volume. The more dense something is, the more mass it has per unit of volume. Molten rock is less dense ...
... Why does the molten rock rise to the surface? Molten rock rises to the surface because it has a different density than the surrounding rock. Density is a measure of the amount of mass in a given volume. The more dense something is, the more mass it has per unit of volume. Molten rock is less dense ...
Geological Society of America Bulletin
... changes in offshore plate boundaries (e.g., 2.5 Ma when the Rivera and Mathematicians plates were locked together). Whole-rock major and trace element analyses of lavas from the coastal Nayarit region reveal three different lava types: an alkali basalt series, basaltic andesite, and andesite. The al ...
... changes in offshore plate boundaries (e.g., 2.5 Ma when the Rivera and Mathematicians plates were locked together). Whole-rock major and trace element analyses of lavas from the coastal Nayarit region reveal three different lava types: an alkali basalt series, basaltic andesite, and andesite. The al ...
volcano - from wikipedia
... Volcanoes are generally found where tectonic plates are diverging or converging. A midoceanic ridge, for example the Mid-Atlantic Ridge, has examples of volcanoes caused by divergent tectonic plates pulling apart; the Pacific Ring of Fire has examples of volcanoes caused by convergent tectonic plate ...
... Volcanoes are generally found where tectonic plates are diverging or converging. A midoceanic ridge, for example the Mid-Atlantic Ridge, has examples of volcanoes caused by divergent tectonic plates pulling apart; the Pacific Ring of Fire has examples of volcanoes caused by convergent tectonic plate ...
Distribution of velocities of longitudinal body waves (P waves) in an
... Chemically and mineralogically gabbro is equivalent to basalt. It is only in grain size that it differs from it. Basalt is aphanitic, whereas gabbro is phaneritic. Basalt occurs as lava; gabbro occurs as plutonic rock. So we call gabbros the deepseated equialents of basat. The intermediate grain-siz ...
... Chemically and mineralogically gabbro is equivalent to basalt. It is only in grain size that it differs from it. Basalt is aphanitic, whereas gabbro is phaneritic. Basalt occurs as lava; gabbro occurs as plutonic rock. So we call gabbros the deepseated equialents of basat. The intermediate grain-siz ...
Earth Structure and Plate Tectonics
... ◦ 4. Magnetometer data -This instrument measures the polar orientation of magnetism of minerals. A symmetrical pattern exists in the magnetic alignment in seafloor rock. This pattern radiates outward from the point of seafloor spreading. ...
... ◦ 4. Magnetometer data -This instrument measures the polar orientation of magnetism of minerals. A symmetrical pattern exists in the magnetic alignment in seafloor rock. This pattern radiates outward from the point of seafloor spreading. ...
Section 20.2 - CPO Science
... The other way is to mix water with the hot rock. The conditions needed to melt rock are very special and exist inside our planet. ...
... The other way is to mix water with the hot rock. The conditions needed to melt rock are very special and exist inside our planet. ...
Magmatic Ores
... Types: 1- Stratiform (Bushveld type; stable cratons) 2- Podiform (Alpine type; orogenic; associated with ophiolites, or with Archean greenstone belts). Uses of Chromite: (Cr/Fe ratio and Mg and Al contents are important; cf. Evans). 1- Source of Cr, necessary for the steel industry 2- Refractory 3- ...
... Types: 1- Stratiform (Bushveld type; stable cratons) 2- Podiform (Alpine type; orogenic; associated with ophiolites, or with Archean greenstone belts). Uses of Chromite: (Cr/Fe ratio and Mg and Al contents are important; cf. Evans). 1- Source of Cr, necessary for the steel industry 2- Refractory 3- ...
A Q A G E O G R A P H Y
... The friction caused by the sinking slab of ocean floor also generates loads of heat leading to partial melting of the crust. Magmas derived from the melting of old ocean floor basalts. They try to rise up through fissures and by burning their way through overlying rock until they reach the surface. ...
... The friction caused by the sinking slab of ocean floor also generates loads of heat leading to partial melting of the crust. Magmas derived from the melting of old ocean floor basalts. They try to rise up through fissures and by burning their way through overlying rock until they reach the surface. ...
Slide 1
... • It is located along the floor of the Atlantic Ocean and is the longest mountain range in the world. • It separates the Eurasian Plate from the North American Plate in the North Atlantic, and the African Plate from the South American Plate in the South Atlantic. • It extends from a junction with th ...
... • It is located along the floor of the Atlantic Ocean and is the longest mountain range in the world. • It separates the Eurasian Plate from the North American Plate in the North Atlantic, and the African Plate from the South American Plate in the South Atlantic. • It extends from a junction with th ...
The Rock and Minerals of the Earth*s Crust
... Slate and marble are rocks useful for building purposes, as they are very durable Seldom contain old, natural gas, or coal because the materials would be burnt up due to the immense heat and pressure put on these rocks Metal are found in these rocks due to the minerals that igneous rocks possess ...
... Slate and marble are rocks useful for building purposes, as they are very durable Seldom contain old, natural gas, or coal because the materials would be burnt up due to the immense heat and pressure put on these rocks Metal are found in these rocks due to the minerals that igneous rocks possess ...
volcanoes MG
... The Earth's crust is made up of huge slabs called plates, which fit together like a jigsaw puzzle. These plates ...
... The Earth's crust is made up of huge slabs called plates, which fit together like a jigsaw puzzle. These plates ...
Chapter 3: The Geography of Volcanoes What is a volcano?
... Gases dissolved in magma expand Causes the magma to rise Magma forces its way up through cracks/fissures in the volcano ...
... Gases dissolved in magma expand Causes the magma to rise Magma forces its way up through cracks/fissures in the volcano ...
Miller Chapter 15
... no new discoveries; rising prices Recycle; increase reserves by improved mining technology, higher prices, and new discoveries ...
... no new discoveries; rising prices Recycle; increase reserves by improved mining technology, higher prices, and new discoveries ...
Metamorphic Notes
... • Partial melting during metamorphism produces migmatites – Migmatites exhibit both intrusive igneous and foliated metamorphic textures ...
... • Partial melting during metamorphism produces migmatites – Migmatites exhibit both intrusive igneous and foliated metamorphic textures ...
Basalt
![](https://commons.wikimedia.org/wiki/Special:FilePath/BasaltUSGOV.jpg?width=300)
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.