Birds Hill backgroun.. - U. of M. WWW server
... that formed 11,000 to 12,000 years ago from the interaction of the Red River glacial ice lobe and glacial Lake Agassiz (Matile, 1984). The lobe was part of a Pleistocene glacier that advanced from the northwest. As the glacier retreated, melt water flowed through gaps in the glacier and deposited sa ...
... that formed 11,000 to 12,000 years ago from the interaction of the Red River glacial ice lobe and glacial Lake Agassiz (Matile, 1984). The lobe was part of a Pleistocene glacier that advanced from the northwest. As the glacier retreated, melt water flowed through gaps in the glacier and deposited sa ...
Formation of Himalayas
... As India began moving toward Eurasia 200 million years ago, a convergent boundary developed along the edge of Eurasia. The oceanic lithosphere between the two continents sank into a subduction zone. ...
... As India began moving toward Eurasia 200 million years ago, a convergent boundary developed along the edge of Eurasia. The oceanic lithosphere between the two continents sank into a subduction zone. ...
Chemical Reactions, Chemical Equations, Electricity
... Fault – a break or crack in Earth’s surface along which movement occurs Convergent Boundary – the location where two tectonic plates push together where either both plates push up or one is pushed underneath the other plate Divergent Boundary – the location where two tectonic plates pull apart Trans ...
... Fault – a break or crack in Earth’s surface along which movement occurs Convergent Boundary – the location where two tectonic plates push together where either both plates push up or one is pushed underneath the other plate Divergent Boundary – the location where two tectonic plates pull apart Trans ...
Cenozoic Earth History
... Subduction of the Juan de Fuca plate along the Cascadia subduction zone is responsible for the Late Tertiary to recent volcanism of the Cascade Range volcanoes ...
... Subduction of the Juan de Fuca plate along the Cascadia subduction zone is responsible for the Late Tertiary to recent volcanism of the Cascade Range volcanoes ...
Metamorphism
... Metamorphism refers to solid-state changes to rocks in Earth’s interior • produced by increased heat, pressure, or the action of hot, reactive fluids • old minerals, unstable under new conditions, recrystallize into stable ones ...
... Metamorphism refers to solid-state changes to rocks in Earth’s interior • produced by increased heat, pressure, or the action of hot, reactive fluids • old minerals, unstable under new conditions, recrystallize into stable ones ...
Environmental Geochemistry I.
... Sedimentary rocks - made up of all kinds of rocks during the weathering (decompose) - devided into three types: clastic, organic and chemical clastic can be: disintegrated (unconsolidated) – small fragments rocks: clay, silt, sand, gravel consolidated (cemented) – fragments are lithified by solution ...
... Sedimentary rocks - made up of all kinds of rocks during the weathering (decompose) - devided into three types: clastic, organic and chemical clastic can be: disintegrated (unconsolidated) – small fragments rocks: clay, silt, sand, gravel consolidated (cemented) – fragments are lithified by solution ...
Table of Contents - Mr. Tobin`s Earth Science Class
... materials show both elastic and plastic deformation. As pressure builds up, elastic limit increases. As temperature increases, stress is reduced. ...
... materials show both elastic and plastic deformation. As pressure builds up, elastic limit increases. As temperature increases, stress is reduced. ...
Ancient crust rises from the deep
... The most likely source of the sulphur-33depleted rocks, the team says, is mantle material that includes remnants of crust that sank or were pushed below Earth’s surface at least 2.45 billion years ago, before photosynthetic organisms filled the atmosphere with oxygen. When oxygen was low, sunlight-d ...
... The most likely source of the sulphur-33depleted rocks, the team says, is mantle material that includes remnants of crust that sank or were pushed below Earth’s surface at least 2.45 billion years ago, before photosynthetic organisms filled the atmosphere with oxygen. When oxygen was low, sunlight-d ...
Chapter 11 Mountain Building 11.1 Rock Deformation Factors
... Strike-slip faults are faults in which the movement is horizontal and parallel to the trend, or strike, of the fault surface. Caused by shear stress. ...
... Strike-slip faults are faults in which the movement is horizontal and parallel to the trend, or strike, of the fault surface. Caused by shear stress. ...
Eighteenth lecture
... eye for its tremendous depth, but the North Rim is also over 8000 feet (2400 m) above sea level! Note how FLAT that upland surface is! ...
... eye for its tremendous depth, but the North Rim is also over 8000 feet (2400 m) above sea level! Note how FLAT that upland surface is! ...
First Hour Exam, Spring, 1999
... d. that portion of the inner Earth immediately below the crust. e. all of the above f. none of the above. 3. The critical difference between the inner and outer core is that a. the inner core is composed of iron, the outer core is mostly nickel. b. the inner core is mostly nickel, while the outer co ...
... d. that portion of the inner Earth immediately below the crust. e. all of the above f. none of the above. 3. The critical difference between the inner and outer core is that a. the inner core is composed of iron, the outer core is mostly nickel. b. the inner core is mostly nickel, while the outer co ...
Meta = change Morph = shape Metamorphic Rock are rocks in
... caused by a force placed on it. The rock is squeezed and stretched causing it to fold and bend. ...
... caused by a force placed on it. The rock is squeezed and stretched causing it to fold and bend. ...
Year 7 Georgraphy - Finborough School
... To know the three basic types of plate boundary and what happens at each. To know the 2 types of plate. ...
... To know the three basic types of plate boundary and what happens at each. To know the 2 types of plate. ...
Earth Science – Quiz 2
... B) transform fault zones along divergent plate boundaries C) rift zones along mid-ocean ridges D) sites of long-lived, hot spot volcanism in the ocean basins 37. Deep ocean trenches are surficial evidence for ________. A) rifting beneath a continental plate and the beginning of continental drift B) ...
... B) transform fault zones along divergent plate boundaries C) rift zones along mid-ocean ridges D) sites of long-lived, hot spot volcanism in the ocean basins 37. Deep ocean trenches are surficial evidence for ________. A) rifting beneath a continental plate and the beginning of continental drift B) ...
Metamorphic Rocks – Practice Questions and Answers
... 19. False, metamorphic grade refers to the relative temperature conditions under which rocks were metamorphosed 20. (c) geotherm - note that this is sometimes referred to as the geothermal gradient 21. upper, deeper 22. sillimanite 23. (d) temperature 24. (d) subduction zone settings 25. False 26. ( ...
... 19. False, metamorphic grade refers to the relative temperature conditions under which rocks were metamorphosed 20. (c) geotherm - note that this is sometimes referred to as the geothermal gradient 21. upper, deeper 22. sillimanite 23. (d) temperature 24. (d) subduction zone settings 25. False 26. ( ...
metamorphic rock reading and questions
... Heat and pressure deep beneath Earth’s surface can change any rock into metamorphic rock. When rock changes into metamorphic rock, its appearance, texture, crystal structure, and mineral content change. Metamorphic rock can form out of igneous, sedimentary, or other metamorphic rock. Collisions betw ...
... Heat and pressure deep beneath Earth’s surface can change any rock into metamorphic rock. When rock changes into metamorphic rock, its appearance, texture, crystal structure, and mineral content change. Metamorphic rock can form out of igneous, sedimentary, or other metamorphic rock. Collisions betw ...
Lecture 2 - Early Earth and Plate Tectonics
... become more dense with distance from mid-oceanic ridge When sufficiently cool and dense, these rocks may sink back into the mantle at subduction zones ...
... become more dense with distance from mid-oceanic ridge When sufficiently cool and dense, these rocks may sink back into the mantle at subduction zones ...
7.0 GEOLOGIC SETTING 7.1 Regional Geologic Setting 7.2
... Figure 7-1, Regional geology, and Figure 7-2, Regional stratigraphy). Also included in the Intermediate Series are extensive metamorphosed felsic, mafic volcanic and volcaniclastic rocks. These rocks are postEburnean (i.e., younger than 1,800 million years) and are cut by basic dikes. The original d ...
... Figure 7-1, Regional geology, and Figure 7-2, Regional stratigraphy). Also included in the Intermediate Series are extensive metamorphosed felsic, mafic volcanic and volcaniclastic rocks. These rocks are postEburnean (i.e., younger than 1,800 million years) and are cut by basic dikes. The original d ...
How are the Earth`s rocks recycled?
... • The rock cycle demonstrates the relationships among the three major rock groups • It is powered by the interior heat of the Earth • As well as earth’s momentum and… • The energy from the sun • It involves processes on the Earth’s surface as well as the Earth’s interior • It connects the “hydrologi ...
... • The rock cycle demonstrates the relationships among the three major rock groups • It is powered by the interior heat of the Earth • As well as earth’s momentum and… • The energy from the sun • It involves processes on the Earth’s surface as well as the Earth’s interior • It connects the “hydrologi ...
Tracing meteoric fluids in fault and detachment systems
... Meteoric fluids play a central role in understanding the mechanics and deformation processes of fault and shear zones in the continental crust. At the same time the hydrogen (and to some degree oxygen) isotopic compositions of meteoric fluids reflect changes in the continental hydrological cycle suc ...
... Meteoric fluids play a central role in understanding the mechanics and deformation processes of fault and shear zones in the continental crust. At the same time the hydrogen (and to some degree oxygen) isotopic compositions of meteoric fluids reflect changes in the continental hydrological cycle suc ...
Normal / Reverse / Transverse
... Leads to fractures in the earth's crust Convection currents in mantle Faults force land up, down or sideways Down - normal fault (pulling apart) Up - reverse fault (pushing together) Sideways - Transform fault (sideways) Rock may slip very little each time (1-5 cm per year) In geological time (slipp ...
... Leads to fractures in the earth's crust Convection currents in mantle Faults force land up, down or sideways Down - normal fault (pulling apart) Up - reverse fault (pushing together) Sideways - Transform fault (sideways) Rock may slip very little each time (1-5 cm per year) In geological time (slipp ...
Document
... The Rock CycleMinerals form rocks All rocks can be transformed into other rock types Rocks are divided into 3 categories Igneous- crystalline- forms as liquid cools Metamorphic- crystalline-forms as rocks are heated and squeezed Sedimentary- non-crystalline- smaller pieces or chemicals from other ro ...
... The Rock CycleMinerals form rocks All rocks can be transformed into other rock types Rocks are divided into 3 categories Igneous- crystalline- forms as liquid cools Metamorphic- crystalline-forms as rocks are heated and squeezed Sedimentary- non-crystalline- smaller pieces or chemicals from other ro ...
blocks of crust are pulled away and one block falls down
... • Process of breaking down the Earth’s material by ...
... • Process of breaking down the Earth’s material by ...
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.