Structural Geology: Deformation and Mountain Building
... Tectonic Stresses resulting from Internal Energy (heat driving convection) Strains (deforms) the Mantle and Crust Bends Rocks ductile strain (Folds) ...
... Tectonic Stresses resulting from Internal Energy (heat driving convection) Strains (deforms) the Mantle and Crust Bends Rocks ductile strain (Folds) ...
Name
... Destroy formations – weathering by gravity, wind, and water (breaks rocks apart), erosion (carries rock away), and tectonic activities (plates sliding under other plates to be consumed & melted by magma) ...
... Destroy formations – weathering by gravity, wind, and water (breaks rocks apart), erosion (carries rock away), and tectonic activities (plates sliding under other plates to be consumed & melted by magma) ...
The Precambrian rift-related metamagmatic rocks of the Southern
... rocks sometimes with komatiitic-like and tholeiitic affinities and was emplaced at about 2.5 Ga ago. The uprising of a mantle diapir initiated the breaking of the preexisting sialic crust and induced the formation of the greenstones in a proto-oceanicrift geodynamic environment. We consider that imb ...
... rocks sometimes with komatiitic-like and tholeiitic affinities and was emplaced at about 2.5 Ga ago. The uprising of a mantle diapir initiated the breaking of the preexisting sialic crust and induced the formation of the greenstones in a proto-oceanicrift geodynamic environment. We consider that imb ...
Introduction to Earth Science Ch. 01
... • Dikes are plutons that form when magma is injected into fractures that cut across existing rock layers • Dikes can radiate like spokes on a wheel from a volcanic neck ...
... • Dikes are plutons that form when magma is injected into fractures that cut across existing rock layers • Dikes can radiate like spokes on a wheel from a volcanic neck ...
Folding and Faulting
... Ontario and Quebec, Canada This rift valley was formed when the Earth's crust moved downward about a kilometre between two major fault zones known as the Mattawa and Petawawa faults These ancient faults are still active and occasionally release stress in the form of earthquakes, such as the 1935 Tim ...
... Ontario and Quebec, Canada This rift valley was formed when the Earth's crust moved downward about a kilometre between two major fault zones known as the Mattawa and Petawawa faults These ancient faults are still active and occasionally release stress in the form of earthquakes, such as the 1935 Tim ...
topic_4_5 - Earth and Environmental Sciences
... compositions are sensitive to temperature and pressure, we can measure their compositions and estimate the conditions at which they formed. Also cold are subduction zones, because cold oceanic crust is being rapidly transported into the Earth’s interior, with little time to be conductively heated by ...
... compositions are sensitive to temperature and pressure, we can measure their compositions and estimate the conditions at which they formed. Also cold are subduction zones, because cold oceanic crust is being rapidly transported into the Earth’s interior, with little time to be conductively heated by ...
Solid Earth Study Guide Key
... any, the formation would occur. a) Igneous- formed at divergent and convergent boundaries; formed from the cooling of lava or magma. ...
... any, the formation would occur. a) Igneous- formed at divergent and convergent boundaries; formed from the cooling of lava or magma. ...
Rocks from Lava
... melted rock to air or water. The fastest cooling lava forms no grains at all. This is how obsidian, a type of volcanic glass, forms. Basalt on the ocean floor is another example of an extrusive igneous rock. Lava trapping large amounts of gas can cool to form igneous rocks containing many holes such ...
... melted rock to air or water. The fastest cooling lava forms no grains at all. This is how obsidian, a type of volcanic glass, forms. Basalt on the ocean floor is another example of an extrusive igneous rock. Lava trapping large amounts of gas can cool to form igneous rocks containing many holes such ...
GLS100labF10_FR_fieldtrip
... rocks in and around the North Shore and beyond. Paleozoic and Mesozoic History Most rocks underlying Salem, MA are over 300 million years old, and reflect a long history of volcanism and faulting related to both collision and rifting. The ancient Precambrian rocks that underlie portions of Boston an ...
... rocks in and around the North Shore and beyond. Paleozoic and Mesozoic History Most rocks underlying Salem, MA are over 300 million years old, and reflect a long history of volcanism and faulting related to both collision and rifting. The ancient Precambrian rocks that underlie portions of Boston an ...
Chapter 11 Mountain Building
... • The rock surface just above the fault is called the hanging wall, and the rock surface below the fault is called the footwall. • In a normal fault, the hanging wall moves down relative to the ...
... • The rock surface just above the fault is called the hanging wall, and the rock surface below the fault is called the footwall. • In a normal fault, the hanging wall moves down relative to the ...
Plate Tectonics and Sedimentation: Where do sediments
... Evolution of a Convergent Plate Margin Ocean basins are relatively young features ...
... Evolution of a Convergent Plate Margin Ocean basins are relatively young features ...
Composition of Earth – Encarta
... belts, being drawn downward into the crust at some margins and being replaced with rising molten rock at others. Continents are carried on the plates, at rates of movement measured in centimetres per year. The crust itself has two parts. The felsic, or upper, crust, of which the continents consist, ...
... belts, being drawn downward into the crust at some margins and being replaced with rising molten rock at others. Continents are carried on the plates, at rates of movement measured in centimetres per year. The crust itself has two parts. The felsic, or upper, crust, of which the continents consist, ...
S05Exam3
... T F 31. During the twentieth century, earthquakes and their effects killed approximately the same number of people (within 10%) as volcanic eruptions and their effects. T F 32. Seismic gaps along major and trends in migration of earthquakes with time along major faults can be used as predictors of f ...
... T F 31. During the twentieth century, earthquakes and their effects killed approximately the same number of people (within 10%) as volcanic eruptions and their effects. T F 32. Seismic gaps along major and trends in migration of earthquakes with time along major faults can be used as predictors of f ...
Earth Science Chapter 21: Fossils and the Rock Record Chapter
... Fossils are the evidence or remains of once-living plants or animals. They provide evidence of the past existence of a wide variety of life forms, most of which have become extinct. The fossil record also provides evidence that populations have undergone change throughout time in response to changes ...
... Fossils are the evidence or remains of once-living plants or animals. They provide evidence of the past existence of a wide variety of life forms, most of which have become extinct. The fossil record also provides evidence that populations have undergone change throughout time in response to changes ...
PPT
... IGNEOUS ROCK - An aggregate of minerals crystallized from molten rock (magma). Major distinctions in rock type are based on two criteria: 1) the chemical composition of the magma (mafic to felsic) and 2) the environment of magma emplacement (plutonic or intrusive vs. volcanic or extrusive) ...
... IGNEOUS ROCK - An aggregate of minerals crystallized from molten rock (magma). Major distinctions in rock type are based on two criteria: 1) the chemical composition of the magma (mafic to felsic) and 2) the environment of magma emplacement (plutonic or intrusive vs. volcanic or extrusive) ...
Lecture 4 Igneous Rocks
... rock they have invaded (known as the country rock). Important intrusive rock bodies include: ...
... rock they have invaded (known as the country rock). Important intrusive rock bodies include: ...
Outer Core
... two plates collide with one another. This can be two contiential plates, two ocean plates, or one contiential plate with an ocean plate. ...
... two plates collide with one another. This can be two contiential plates, two ocean plates, or one contiential plate with an ocean plate. ...
Thrust systems: geometry and kinematics
... 4. Fault place older/higher grade rocks over younger/lower grade rocks 5. Faults cut up-section 6. Faults generally propagate (get younger) toward the foreland 7. Younger and structurally deeper faults rotate older faults to steeper ...
... 4. Fault place older/higher grade rocks over younger/lower grade rocks 5. Faults cut up-section 6. Faults generally propagate (get younger) toward the foreland 7. Younger and structurally deeper faults rotate older faults to steeper ...
![U72015 [1018443]](http://s1.studyres.com/store/data/013474097_1-4aebbc31da971cdf4df7fd1fd9cdcd9d-300x300.png)
U72015 [1018443]
... America (Paraná Basin) and in the northwest of the USA (Washington and Oregon). Most volcanoes are largely or entirely made of basalt. Even on the moon there are extensive lava fields, such as the Mare Imbrium which covers an area of about 200,000 km². ...
... America (Paraná Basin) and in the northwest of the USA (Washington and Oregon). Most volcanoes are largely or entirely made of basalt. Even on the moon there are extensive lava fields, such as the Mare Imbrium which covers an area of about 200,000 km². ...
Geology Highway Map Southern Ontario
... “User”) have accepted, and have agreed to be bound by, the Terms of Use. Content: This Content is offered by the Province of Ontario’s Ministry of Northern Development and Mines (MNDM) as a public service, on an “as-is” basis. Recommendations and statements of opinion expressed in the Content are th ...
... “User”) have accepted, and have agreed to be bound by, the Terms of Use. Content: This Content is offered by the Province of Ontario’s Ministry of Northern Development and Mines (MNDM) as a public service, on an “as-is” basis. Recommendations and statements of opinion expressed in the Content are th ...
File
... Continental drift evidence stating that mountain belts that end at one coastline seem to reappear on a landmass across the ocean ...
... Continental drift evidence stating that mountain belts that end at one coastline seem to reappear on a landmass across the ocean ...
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.