Physical world of mountainss
... Towering mountains topped with snow create a skyline of breathtaking beauty, but the picture tells only part of the story. Mountains are not simply bare rock. Many plants and animals live on them, yet they are often different from those on the plains at the foot of the mountain range. Temperature an ...
... Towering mountains topped with snow create a skyline of breathtaking beauty, but the picture tells only part of the story. Mountains are not simply bare rock. Many plants and animals live on them, yet they are often different from those on the plains at the foot of the mountain range. Temperature an ...
Geology of the West Troms Basement Complex, northern Norway
... the Sveco karelian shear ing. Since the quartz diorite on southern Senja -- containin g dolerite dyke swarms (Landmark 1973) -- is 1746 Ma old, the dolerites on Senja are unrelated to, and younger than those on Rinqvass eya. The Senja Shear Belt (SSB) is defined by air photo and satellite imagery in ...
... the Sveco karelian shear ing. Since the quartz diorite on southern Senja -- containin g dolerite dyke swarms (Landmark 1973) -- is 1746 Ma old, the dolerites on Senja are unrelated to, and younger than those on Rinqvass eya. The Senja Shear Belt (SSB) is defined by air photo and satellite imagery in ...
Abby Murray Geology 11 Final Project December 20, 2007 Geologic
... before 1.1 Ga, a varied mixture of rock in an accretionary wedge, andesitic volcanic melt, tilted and thrust-faulted sedimentary layers, a granitic pluton which metamorphosed a section of those layers, and younger tilted sedimentary layers. Originally horizontal, laterally continuous layers of mudst ...
... before 1.1 Ga, a varied mixture of rock in an accretionary wedge, andesitic volcanic melt, tilted and thrust-faulted sedimentary layers, a granitic pluton which metamorphosed a section of those layers, and younger tilted sedimentary layers. Originally horizontal, laterally continuous layers of mudst ...
Metamorphism
... Figure 1. Examples of metamorphism. a) to b) The dark fine grained magmatic basalt in a) is transformed into a spectacular coarse grained green and red eclogite (b) during metamorphism at high pressures and temperatures. During the metamorphic transition, the augite (pyroxene), plagioclase and oliv ...
... Figure 1. Examples of metamorphism. a) to b) The dark fine grained magmatic basalt in a) is transformed into a spectacular coarse grained green and red eclogite (b) during metamorphism at high pressures and temperatures. During the metamorphic transition, the augite (pyroxene), plagioclase and oliv ...
There was a very important event that occurred early in Earth`s
... 3. There was a very important event that occurred early in Earth’s history. Do you remember what it is called? What happened during that event? (hint: there are around 6 or so major changes to the Earth that occurred) a. The Iron Catastrophe! i. The Earth became differentiated (layered) ii. Dense ma ...
... 3. There was a very important event that occurred early in Earth’s history. Do you remember what it is called? What happened during that event? (hint: there are around 6 or so major changes to the Earth that occurred) a. The Iron Catastrophe! i. The Earth became differentiated (layered) ii. Dense ma ...
Draft Museum Guide - Valley Geology
... exposed to higher temperatures and pressures. This occurs during mountain building. As rocks are exposed to higher temperatures and pressure metamorphic reactions can occur, where elements in certain minerals re ...
... exposed to higher temperatures and pressures. This occurs during mountain building. As rocks are exposed to higher temperatures and pressure metamorphic reactions can occur, where elements in certain minerals re ...
Earthquakes
... layers (solid, liquid and plastic), but they are deflected in different directions as they move from one layer to another. ...
... layers (solid, liquid and plastic), but they are deflected in different directions as they move from one layer to another. ...
STRUCTURAL GEOLOGY Continental Drift and Seafloor Spreading
... 3. Strike-slip faulting occurs when the forces cause the motion along the fault boundary to be horizontal with neither section of rock being significantly uplifted. This type of motion occurs along a transform boundary and this type of fault is called a transform fault. ...
... 3. Strike-slip faulting occurs when the forces cause the motion along the fault boundary to be horizontal with neither section of rock being significantly uplifted. This type of motion occurs along a transform boundary and this type of fault is called a transform fault. ...
Chapter 17 Plate Tectonics - The Summer Science Safari Summer
... Porphyritic – 2 different cooling rates a combination of both fine and coarse grained crystals C. Describe weathering, erosion, and deposition and the agents involved (wind, water, etc.) weathering is the breaking up of rocks into sediments; wind, water, ice, heat erosion is the movement of sediment ...
... Porphyritic – 2 different cooling rates a combination of both fine and coarse grained crystals C. Describe weathering, erosion, and deposition and the agents involved (wind, water, etc.) weathering is the breaking up of rocks into sediments; wind, water, ice, heat erosion is the movement of sediment ...
Rock Identification and stories lab
... completely different from mineral cleavage) and the shininess are the result of mica and clay crystals in the rock becoming oriented by pressure. Story: The slaty cleavage and orientation of mineral grains indicate that the rock has been metamorphosed, heated under pressure. It probably formed at de ...
... completely different from mineral cleavage) and the shininess are the result of mica and clay crystals in the rock becoming oriented by pressure. Story: The slaty cleavage and orientation of mineral grains indicate that the rock has been metamorphosed, heated under pressure. It probably formed at de ...
Page 23 - Mr. Volpe`s Earth Science Emporium
... •Form over large areas by extreme heat and pressure deep inside Earth Examples: where mountains form and where tectonic plates collide Page 23 ...
... •Form over large areas by extreme heat and pressure deep inside Earth Examples: where mountains form and where tectonic plates collide Page 23 ...
GSL abstract, K. H. James
... shares its origins with the Gulf of Mexico and the Yucatán Basin. Lying between the Gulf and northern South America, it could have significant hydrocarbon potential. Regional data show that Middle American geology reflects intercontinental extension between the separating Americas. Its N60oW and N35 ...
... shares its origins with the Gulf of Mexico and the Yucatán Basin. Lying between the Gulf and northern South America, it could have significant hydrocarbon potential. Regional data show that Middle American geology reflects intercontinental extension between the separating Americas. Its N60oW and N35 ...
Cenozoic California
... (2) Mountain building did not effect all areas at the same time but progressed in a wave through Coast Ranges (a) North of San Francisco Bay Area late Pliocene Marine Merced Formation and Sonoma Volcanics lie over wide areas with only gentle dips on older formations (b) At same time Ventura Basin-lo ...
... (2) Mountain building did not effect all areas at the same time but progressed in a wave through Coast Ranges (a) North of San Francisco Bay Area late Pliocene Marine Merced Formation and Sonoma Volcanics lie over wide areas with only gentle dips on older formations (b) At same time Ventura Basin-lo ...
Desert processes and Death Valley
... Death Valley is in California. It is near the western border with Nevada, and is approximately 300km from Los Angeles. It is one of the many desert basins within the Sierra Nevada Mountains. Climate ...
... Death Valley is in California. It is near the western border with Nevada, and is approximately 300km from Los Angeles. It is one of the many desert basins within the Sierra Nevada Mountains. Climate ...
Chapter 6 Whole Notes
... Granite is the light, coarse-grained rock formed at depth and exposed after deep erosion. It is rich in feldspar and quartz (silica) and hence is called a felsic rock. So granite is felsic and plutonic. Where Igneous Rock Forms Igneous rocks form in three main places: (1) where lithospheric plates p ...
... Granite is the light, coarse-grained rock formed at depth and exposed after deep erosion. It is rich in feldspar and quartz (silica) and hence is called a felsic rock. So granite is felsic and plutonic. Where Igneous Rock Forms Igneous rocks form in three main places: (1) where lithospheric plates p ...
Chapter 02 Earth Structure and Plate Tectonics
... 6. Shear waves do not pass through a solid liquid boundary between Earth's layers. Compressional waves can pass this type of boundary. 7. Oceanic-type crust is more dense than continental-type crust. 8. The continental landmasses are less dense than the mantle and are buoyed up by depressing the und ...
... 6. Shear waves do not pass through a solid liquid boundary between Earth's layers. Compressional waves can pass this type of boundary. 7. Oceanic-type crust is more dense than continental-type crust. 8. The continental landmasses are less dense than the mantle and are buoyed up by depressing the und ...
Field Trip Guide
... microscopes, we could see all of the diatoms that comprise this rock. Since there is very little terrigeneous material in the rock, we know that it was formed far from continents. It was probably formed in the deep oceans of the abyssal plains. What is the evidence that these sediments were deposite ...
... microscopes, we could see all of the diatoms that comprise this rock. Since there is very little terrigeneous material in the rock, we know that it was formed far from continents. It was probably formed in the deep oceans of the abyssal plains. What is the evidence that these sediments were deposite ...
“I Can” Statement Template
... 30. The Yellowstone Hotspot is underneath northwestern Wyoming at this time. In a few million years, under what state do you predict the hotspot ...
... 30. The Yellowstone Hotspot is underneath northwestern Wyoming at this time. In a few million years, under what state do you predict the hotspot ...
Three distinct margins of the North American and Eurasian Plates
... Fault & Plate Tectonics Patton Bay Reverse Fault (NE-trending Subduction Zone Megathrust due to NW subduction of Pacific Plate beneath N American Plate). Total length of rupture zone ~600-900 km (fault area=500 km x 300 km) Depth to Hypocenter >6 km Maximum Vertical Offset 6-12 m (raised shorelines) ...
... Fault & Plate Tectonics Patton Bay Reverse Fault (NE-trending Subduction Zone Megathrust due to NW subduction of Pacific Plate beneath N American Plate). Total length of rupture zone ~600-900 km (fault area=500 km x 300 km) Depth to Hypocenter >6 km Maximum Vertical Offset 6-12 m (raised shorelines) ...
Benom Complex: Evidence of magmatic origin
... second group of apatite is also present in lesser amount in these rocks. Encl aves and synplutonic dykes however are devoid of the first group apatite. They only contain an abundance of acicul ar apatite . The implication of the presence of these two differe nt groups of apatite appears to reflect o ...
... second group of apatite is also present in lesser amount in these rocks. Encl aves and synplutonic dykes however are devoid of the first group apatite. They only contain an abundance of acicul ar apatite . The implication of the presence of these two differe nt groups of apatite appears to reflect o ...
Field Geological Observations around Rhein Graben in Germany
... during the different geological age around the upper Rhein Graben with the structural elements that was delineated in the area and which are the consequence of these tectonic events. The folds and reverse faults and thrust which cut the Devonian rocks during variscan orogeny are of direction NE-SW a ...
... during the different geological age around the upper Rhein Graben with the structural elements that was delineated in the area and which are the consequence of these tectonic events. The folds and reverse faults and thrust which cut the Devonian rocks during variscan orogeny are of direction NE-SW a ...
The Layers of the Earth
... Earth. The Mantle is made up of minerals rich in the elements iron, magnesium, silica, and oxygen. The Mantle makes up approximately ~85% of the Earth's volume. It is seperated from the crust by a sharp change to higher density and seismic velocity, and more mafic composition. The Earth's outer laye ...
... Earth. The Mantle is made up of minerals rich in the elements iron, magnesium, silica, and oxygen. The Mantle makes up approximately ~85% of the Earth's volume. It is seperated from the crust by a sharp change to higher density and seismic velocity, and more mafic composition. The Earth's outer laye ...
LAURENTIA j20 Geosynclinal theory < Hall, Dana - e
... invariably include belts that accumulated deepwater-marine sediments and great amounts of volcanic rocks in what is now called an “orogenic belt” if active, and (oxymoronically) a “mobile belt” if ancient and no longer active. A craton is a long-term stable part of a continent that does not become d ...
... invariably include belts that accumulated deepwater-marine sediments and great amounts of volcanic rocks in what is now called an “orogenic belt” if active, and (oxymoronically) a “mobile belt” if ancient and no longer active. A craton is a long-term stable part of a continent that does not become d ...
Folds, Faults and Mountain Belts (Con`t.)
... Surface rocks get taken deep into the Earth. Rocks are subjected to high temperatures, lithostatic pressure and directed pressure. Rocks become foliated. ...
... Surface rocks get taken deep into the Earth. Rocks are subjected to high temperatures, lithostatic pressure and directed pressure. Rocks become foliated. ...
Dome Mountains
... occur in areas of essentially flat-lying sedimentary rocks. These layers are bent upward in a dome shape as a result of uplifting forces. If the rocks above the dome mountain’s center have eroded away, the layers of rock may stand out as sharp ridges around the edge of the mountain. There are two ba ...
... occur in areas of essentially flat-lying sedimentary rocks. These layers are bent upward in a dome shape as a result of uplifting forces. If the rocks above the dome mountain’s center have eroded away, the layers of rock may stand out as sharp ridges around the edge of the mountain. There are two ba ...
Algoman orogeny
The Algoman orogeny, known as the Kenoran orogeny in Canada, was an episode of mountain-building (orogeny) during the Late Archean Eon that involved repeated episodes of continental collisions, compressions and subductions. The Superior province and the Minnesota River Valley terrane collided about 2,700 to 2,500 million years ago. The collision folded the Earth's crust and produced enough heat and pressure to metamorphose the rock. Blocks were added to the Superior province along a 1,200 km (750 mi) boundary that stretches from present-day eastern South Dakota into the Lake Huron area. The Algoman orogeny brought the Archaen Eon to a close, about 2,500 million years ago; it lasted less than 100 million years and marks a major change in the development of the earth’s crust.The Canadian shield contains belts of metavolcanic and metasedimentary rocks formed by the action of metamorphism on volcanic and sedimentary rock. The areas between individual belts consist of granites or granitic gneisses that form fault zones. These two types of belts can be seen in the Wabigoon, Quetico and Wawa subprovinces; the Wabigoon and Wawa are of volcanic origin and the Quetico is of sedimentary origin. These three subprovinces lie linearly in southwestern- to northeastern-oriented belts about 140 km (90 mi) wide on the southern portion of the Superior Province.The Slave province and portions of the Nain province were also affected. Between about 2,000 and 1,700 million years ago these combined with the Sask and Wyoming cratons to form the first supercontinent, the Kenorland supercontinent.