earthquake - GZ @ Science Class Online
... The low mountain ranges and rock types in North America match parts of Great Britain, France, and Scandinavia. Fossils – patterns in distribution The same fossil reptiles found in South Africa are also found in Brazil and Argentina. ...
... The low mountain ranges and rock types in North America match parts of Great Britain, France, and Scandinavia. Fossils – patterns in distribution The same fossil reptiles found in South Africa are also found in Brazil and Argentina. ...
Rasskazov
... are buried under the lava flows and are poorly known thus far. On the Late Pleistocene-Holocene volcanoes, the vents are well delineated by the products of eruptions and are partially exposed by erosion. Their spatial positions suggest two episodes in the development of young volcanism: (1) an episo ...
... are buried under the lava flows and are poorly known thus far. On the Late Pleistocene-Holocene volcanoes, the vents are well delineated by the products of eruptions and are partially exposed by erosion. Their spatial positions suggest two episodes in the development of young volcanism: (1) an episo ...
theme 2 : modifications du continent asie au cours de la - Perso-sdt
... major north-dipping detachment fault at midcrustal levels that is called the Main Himalayan Thrust. An important aspect of the INDEPTH project is the integration of deep structural data with the knowledge of surface geology of the Himalaya and Tibet. The INDEPTH researchers at the workshop presente ...
... major north-dipping detachment fault at midcrustal levels that is called the Main Himalayan Thrust. An important aspect of the INDEPTH project is the integration of deep structural data with the knowledge of surface geology of the Himalaya and Tibet. The INDEPTH researchers at the workshop presente ...
Chapter 21: Metamorphism
... Staurolite zone. Schists with staurolite, biotite, muscovite, quartz, garnet, and plagioclase. Some chlorite may persist Kyanite zone. Schists with kyanite, biotite, muscovite, quartz, plagioclase, and usually garnet and staurolite Sillimanite zone. Schists and gneisses with sillimanite, biotite, mu ...
... Staurolite zone. Schists with staurolite, biotite, muscovite, quartz, garnet, and plagioclase. Some chlorite may persist Kyanite zone. Schists with kyanite, biotite, muscovite, quartz, plagioclase, and usually garnet and staurolite Sillimanite zone. Schists and gneisses with sillimanite, biotite, mu ...
The Origins of Plate Tectonics Theory
... peaks on Earth, most famously Mt. Everest at 8,848 meters above sea level. But the rock that caps Mt. Everest is limestone, a type of rock that forms at the bottom of warm, shallow seas and is composed primarily of fossilized marine creatures, everything from plankton to clams and fish. For years, g ...
... peaks on Earth, most famously Mt. Everest at 8,848 meters above sea level. But the rock that caps Mt. Everest is limestone, a type of rock that forms at the bottom of warm, shallow seas and is composed primarily of fossilized marine creatures, everything from plankton to clams and fish. For years, g ...
Oceanic Crust
... • Think of the Earth as completely covered with a layer of thin, dense basalt rock with chunks of thicker, less dense granite here and there –The granite chunks are the continents riding on the basalt like wood floats on water ...
... • Think of the Earth as completely covered with a layer of thin, dense basalt rock with chunks of thicker, less dense granite here and there –The granite chunks are the continents riding on the basalt like wood floats on water ...
Topic 10: GEOLOGY of SYDNEY REGION
... Triassic (240-170m.y) sediments deposited to form three distinct layers (see crosssection map). At Balmain Permian black coal is 900m below the surface. Narrabeen Group. This lowest Triassic member is interbedded sandstone-shaley sandstone-shale and forms the prominent coastal cliffs from Narrabeen ...
... Triassic (240-170m.y) sediments deposited to form three distinct layers (see crosssection map). At Balmain Permian black coal is 900m below the surface. Narrabeen Group. This lowest Triassic member is interbedded sandstone-shaley sandstone-shale and forms the prominent coastal cliffs from Narrabeen ...
Document
... you gained in Part 3. Upon completion of this part you will be able to relate the tectonic processes operating at each of the plate boundaries with the type of volcanism produced. You will be required to analyse patterns in the location of earthquake foci and relate these patterns to the three types ...
... you gained in Part 3. Upon completion of this part you will be able to relate the tectonic processes operating at each of the plate boundaries with the type of volcanism produced. You will be required to analyse patterns in the location of earthquake foci and relate these patterns to the three types ...
this PDF file
... on seismic types of rock is required as an initiation to estimate the potential location The results of the ground study were of the earthquakes in the future. This study subsequently analyzed from stratigraphic aimed to measure the stratigraphic section perspective as well as calculated to obtain t ...
... on seismic types of rock is required as an initiation to estimate the potential location The results of the ground study were of the earthquakes in the future. This study subsequently analyzed from stratigraphic aimed to measure the stratigraphic section perspective as well as calculated to obtain t ...
Name ____Justin Powers______ Date ______ Period ____ Plate
... Subduction Zones and Volcanoes At some convergent boundaries, an oceanic plate collides with a continental plate. Oceanic crust tends to be thinner and denser than continental crust, so the denser oceanic crust gets bent and pulled under, or subducted, beneath the lighter and thicker continental cru ...
... Subduction Zones and Volcanoes At some convergent boundaries, an oceanic plate collides with a continental plate. Oceanic crust tends to be thinner and denser than continental crust, so the denser oceanic crust gets bent and pulled under, or subducted, beneath the lighter and thicker continental cru ...
Evidence Supporting Continental Drift
... The Earth's crust is constantly moving, both vertically and horizontally, at rates of up to several inches a year. A widely-held theory that explains these movements is called "plate tectonics." It was developed in the mid 1960s by geophysicists. The term "plate" refers to large rigid blocks of the ...
... The Earth's crust is constantly moving, both vertically and horizontally, at rates of up to several inches a year. A widely-held theory that explains these movements is called "plate tectonics." It was developed in the mid 1960s by geophysicists. The term "plate" refers to large rigid blocks of the ...
Question 1 - JustAnswer
... Subduction of oceanic lithosphere under a continental block gives rise to what type of geologic structure that is characterized by a continental volcanic arc and associated igneous plutons? Answer Andean-type plate margin dome continental collision dip-slip fault ...
... Subduction of oceanic lithosphere under a continental block gives rise to what type of geologic structure that is characterized by a continental volcanic arc and associated igneous plutons? Answer Andean-type plate margin dome continental collision dip-slip fault ...
Theory of Plate Tectonics
... Continental Drift was proven by: • Certain fossils are on different continents – Example: Mesosaurus – reptile that lived about 270 mya, fossils found only in parts of South America and Africa – could have only happened when the 2 continents were once joined). ...
... Continental Drift was proven by: • Certain fossils are on different continents – Example: Mesosaurus – reptile that lived about 270 mya, fossils found only in parts of South America and Africa – could have only happened when the 2 continents were once joined). ...
11.3 Mountain Formation
... of the crust. An example of an active island arc is the Aleutian arc, which forms the Aleutian Islands in Alaska. Some volcanic island arcs, such as Japan, appear to have been built up by two or three different periods of subduction. As shown by Japan, the continued development of a volcanic island ...
... of the crust. An example of an active island arc is the Aleutian arc, which forms the Aleutian Islands in Alaska. Some volcanic island arcs, such as Japan, appear to have been built up by two or three different periods of subduction. As shown by Japan, the continued development of a volcanic island ...
Volcanoes and Igneous Activity Earth
... 1. Depositional contact: a sedimentary unit is deposited on top of another. 2. Fault contact: two units are juxtaposed by a fault. 3. Intrusive contact: an igneous cuts across another rock body. ...
... 1. Depositional contact: a sedimentary unit is deposited on top of another. 2. Fault contact: two units are juxtaposed by a fault. 3. Intrusive contact: an igneous cuts across another rock body. ...
b hulen - University of Nevada, Reno
... fault-block topography of the region. A second set of faults strikes northwest to west-northwest. Although most faults of this second set are characterized by nonnal displacement, some may have aright-lateral strike-slip component (Lawrence, 1976) • ...
... fault-block topography of the region. A second set of faults strikes northwest to west-northwest. Although most faults of this second set are characterized by nonnal displacement, some may have aright-lateral strike-slip component (Lawrence, 1976) • ...
M.Sc. App. Geology - Pondicherry University
... Unit -2: Morphology, geometrical characteristics and classification of structures Unit -3: Folds: Basic fold geometry, nomenclature and definitions. Classification of folds. Describing folds. Interference and superposition of folds. Folds and ductile deformation. Unit -4: Faults: Fault geometry, nom ...
... Unit -2: Morphology, geometrical characteristics and classification of structures Unit -3: Folds: Basic fold geometry, nomenclature and definitions. Classification of folds. Describing folds. Interference and superposition of folds. Folds and ductile deformation. Unit -4: Faults: Fault geometry, nom ...
General Geology Lab #3: Igneous Rocks
... Please identify the following group of igneous rocks. Please determine whether they are intrusive (plutonic) or extrusive (volcanic). Indicate whether they are felsic, intermediate or mafic. Finally, answer the sample specific questions. Tectonic setting refers to the following: subduction zone, con ...
... Please identify the following group of igneous rocks. Please determine whether they are intrusive (plutonic) or extrusive (volcanic). Indicate whether they are felsic, intermediate or mafic. Finally, answer the sample specific questions. Tectonic setting refers to the following: subduction zone, con ...
narrative-for-class-journey-to-the-centre-of-the-earth
... Stop Number 7 – Base of the Lithosphere: Here we are at the base of the lithosphere. Notice that the lithosphere consists of the crust and the uppermost part of the mantle. This boundary is gradual with depth, not an abrupt “discontinuity”. The depth (~50 – 300 km) to the base of the lithosphere is ...
... Stop Number 7 – Base of the Lithosphere: Here we are at the base of the lithosphere. Notice that the lithosphere consists of the crust and the uppermost part of the mantle. This boundary is gradual with depth, not an abrupt “discontinuity”. The depth (~50 – 300 km) to the base of the lithosphere is ...
Chortis block: where did it come from - Centro de Geociencias
... marbles, quartzites and gneisses, thus indicating the possible presence of basement formations with different ages and exposure depths. The lower grade metamorphic rocks are intensely folded and intruded by abundant veins and pods of quartz. A ...
... marbles, quartzites and gneisses, thus indicating the possible presence of basement formations with different ages and exposure depths. The lower grade metamorphic rocks are intensely folded and intruded by abundant veins and pods of quartz. A ...
29. Sr-, Nd-, AND Pb-ISOTOPIC COMPOSITION OF VOLCANIC
... Site 917 show only slight evidence, in their trace-element abundances, for crustal contamination. This series represents a resurgence of magmatism accompanying the final stages of breakup of the margin, with near-primary magma erupted rapidly from mantle depths. Simple fractional crystallization cou ...
... Site 917 show only slight evidence, in their trace-element abundances, for crustal contamination. This series represents a resurgence of magmatism accompanying the final stages of breakup of the margin, with near-primary magma erupted rapidly from mantle depths. Simple fractional crystallization cou ...
from Georgia State Base Geologic Map, 1976 Index and Short
... The following rocks are found only north of the "Fall Line" in Georgia and outside of the Paleozoic region. These metamorphic rocks may have little or no correspondence to their original sedimentary form. Instead they are more often graded by the degree of metamorphisim than by original rock composi ...
... The following rocks are found only north of the "Fall Line" in Georgia and outside of the Paleozoic region. These metamorphic rocks may have little or no correspondence to their original sedimentary form. Instead they are more often graded by the degree of metamorphisim than by original rock composi ...
Geodynamic Significance of the Kontum Massif in
... has also been mentioned in the literature (Hutchison 1989, p. 300). A significantly younger K-Ar biotite age of 398 Ⳳ 7 Ma has been reported from the Dak-Tô region northwest of Kontum (fig. 1; Faure and Fontaine 1969; Snelling 1969). Radiometric ages have only recently been reported directly for th ...
... has also been mentioned in the literature (Hutchison 1989, p. 300). A significantly younger K-Ar biotite age of 398 Ⳳ 7 Ma has been reported from the Dak-Tô region northwest of Kontum (fig. 1; Faure and Fontaine 1969; Snelling 1969). Radiometric ages have only recently been reported directly for th ...
Plate Tectonics
... Transform Fault Boundaries At a transform fault boundary, plates grind past each other without creating or destroying the lithosphere. SHALLOW EARTHQUAKES Transform faults • Most join two segments of a mid-ocean ridge. • At the time of formation, they roughly parallel the direction of plate mo ...
... Transform Fault Boundaries At a transform fault boundary, plates grind past each other without creating or destroying the lithosphere. SHALLOW EARTHQUAKES Transform faults • Most join two segments of a mid-ocean ridge. • At the time of formation, they roughly parallel the direction of plate mo ...
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.