Seismogenic zones in Eastern Turkey
... depths were fixed to 10 km. The one PDE event that did not have fixed depth was within 2 km deeper than the ETSE hypocentral depth solution. We also recorded a Mw 5.5 earthquake that occurred along the southern portion of LakeVan (Figure 1). The hypocentral depth for this even was 23 km depth, howe ...
... depths were fixed to 10 km. The one PDE event that did not have fixed depth was within 2 km deeper than the ETSE hypocentral depth solution. We also recorded a Mw 5.5 earthquake that occurred along the southern portion of LakeVan (Figure 1). The hypocentral depth for this even was 23 km depth, howe ...
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... been positioned near the eastern end of the Uralian Seaway during the early to middle Paleozoic, then rotated clockwise to become wedged between Siberia, Kazakhstan, and Sino-Korea in the late Paleozoic–Mesozoic (Fig. 3). That seaway was an important early to middle Paleozoic marine corridor in the ...
... been positioned near the eastern end of the Uralian Seaway during the early to middle Paleozoic, then rotated clockwise to become wedged between Siberia, Kazakhstan, and Sino-Korea in the late Paleozoic–Mesozoic (Fig. 3). That seaway was an important early to middle Paleozoic marine corridor in the ...
Tectonic controls on the distribution of large
... the Molucca Sea Plate (MSP) was subducted westward beneath the northern and eastern arms of Sulawesi. Earthquake data seem to suggest that the angle of the westward subduction of the MSP is steeper than the angle of southward subduction of CSP, making it plausible that subducted CSP is above the act ...
... the Molucca Sea Plate (MSP) was subducted westward beneath the northern and eastern arms of Sulawesi. Earthquake data seem to suggest that the angle of the westward subduction of the MSP is steeper than the angle of southward subduction of CSP, making it plausible that subducted CSP is above the act ...
Barents project: Age and chemical character of the Perthite
... mineralisations including the world class Kiruna iron ores. In the south-western parts of the Norrbotten County, between Arjeplog and Jokkmokk, there is an 80 × 80 km large area with variably deformed porphyritic to augen-bearing metagranites, which are grouped under the term Vuolvojaur granite and ...
... mineralisations including the world class Kiruna iron ores. In the south-western parts of the Norrbotten County, between Arjeplog and Jokkmokk, there is an 80 × 80 km large area with variably deformed porphyritic to augen-bearing metagranites, which are grouped under the term Vuolvojaur granite and ...
Metamorphic Rocks - Ring of Fire Science
... The Himalayan Mountains are growing as the continental plates of Asia and India collide. Beneath these mountains, igneous, sedimentary and metamorphic rocks are changing as the minerals in the rocks adjust to the increasing heat and pressure caused by the two continents colliding. Oceanic plates sub ...
... The Himalayan Mountains are growing as the continental plates of Asia and India collide. Beneath these mountains, igneous, sedimentary and metamorphic rocks are changing as the minerals in the rocks adjust to the increasing heat and pressure caused by the two continents colliding. Oceanic plates sub ...
The lithosphere: rocks and minerals
... are covered by the oceans. The rest form continents and are usually covered by forests, grasslands, crops and cities. Rocks also form large mountain ranges and can be found as loose pieces. These loose pieces are called blocks, gravel or sand. ...
... are covered by the oceans. The rest form continents and are usually covered by forests, grasslands, crops and cities. Rocks also form large mountain ranges and can be found as loose pieces. These loose pieces are called blocks, gravel or sand. ...
Plate Tectonics Lecture Notes: Slide 1. Title
... - Ancient rocks exceeding 3.5 billion years in age are found on all of Earth's continents. The oldest rocks on Earth found so far are the Acasta Gneisses in northwestern Canada near Great Slave Lake (4.03 Ga) [Ga = billion years ago] and the Isua Supracrustal rocks in West Greenland (3.7 to 3.8 Ga), ...
... - Ancient rocks exceeding 3.5 billion years in age are found on all of Earth's continents. The oldest rocks on Earth found so far are the Acasta Gneisses in northwestern Canada near Great Slave Lake (4.03 Ga) [Ga = billion years ago] and the Isua Supracrustal rocks in West Greenland (3.7 to 3.8 Ga), ...
Lithosphere, Earth`s Interior and Paleo-Environment
... The South Indian Precambrian shield is a mosaic of Archaean and Proterozoic terrains. The Archaean blocks are comprised of the granite-greenstone Dharwar Craton (DC) and the Southern Granulite Terrain (SGT). The SGT is dominantly composed of late-Archaean granulites in the northern part whilst Prote ...
... The South Indian Precambrian shield is a mosaic of Archaean and Proterozoic terrains. The Archaean blocks are comprised of the granite-greenstone Dharwar Craton (DC) and the Southern Granulite Terrain (SGT). The SGT is dominantly composed of late-Archaean granulites in the northern part whilst Prote ...
Plate Tectonics Lecture Notes
... - Ancient rocks exceeding 3.5 billion years in age are found on all of Earth's continents. The oldest rocks on Earth found so far are the Acasta Gneisses in northwestern Canada near Great Slave Lake (4.03 Ga) [Ga = billion years ago] and the Isua Supracrustal rocks in West Greenland (3.7 to 3.8 Ga), ...
... - Ancient rocks exceeding 3.5 billion years in age are found on all of Earth's continents. The oldest rocks on Earth found so far are the Acasta Gneisses in northwestern Canada near Great Slave Lake (4.03 Ga) [Ga = billion years ago] and the Isua Supracrustal rocks in West Greenland (3.7 to 3.8 Ga), ...
Plate tectonics and petroleum basins
... through. time of different tectonic settings at any phase of rifted margins. given petroleum province - an example of nature Rifting is also responsible for continental sags, changing faces through time (for example, the such as the Illinois basin or the West Siberian Tertiary foreland basin of the ...
... through. time of different tectonic settings at any phase of rifted margins. given petroleum province - an example of nature Rifting is also responsible for continental sags, changing faces through time (for example, the such as the Illinois basin or the West Siberian Tertiary foreland basin of the ...
Calc-alkaline volcanic rocks in mélange formations from the South
... a field of productive dispute for over the last 30 years. Many questions lie not only about the geotectonic environment and the petrogenetic processes which took place, but also on the number of oceanic basins which contributed to the formation of Othris magmatic rocks. Unanswered questions may be a ...
... a field of productive dispute for over the last 30 years. Many questions lie not only about the geotectonic environment and the petrogenetic processes which took place, but also on the number of oceanic basins which contributed to the formation of Othris magmatic rocks. Unanswered questions may be a ...
10 UPLIFT, EROSION AND ROCK DEFORMATION
... Shikoku and Kyushu experiences a progressive and high uplift rate up to 5-6 mm/year, but this can be counteracted by coseismic subsidence during major plate boundary earthquakes. In the 1946 Nankaido earthquake, the coastal area of Shikoku subsided locally up to 700 mm, while other parts of the isla ...
... Shikoku and Kyushu experiences a progressive and high uplift rate up to 5-6 mm/year, but this can be counteracted by coseismic subsidence during major plate boundary earthquakes. In the 1946 Nankaido earthquake, the coastal area of Shikoku subsided locally up to 700 mm, while other parts of the isla ...
Classifying Rocks
... natural setting might be found in various states of decomposition due to weathering. Depending on the degree of weathering, it may be challenging even to tell if a particular rock is igneous, sedimentary, or metamorphic! In any case, when learning to classify rocks there is no substitute for looking ...
... natural setting might be found in various states of decomposition due to weathering. Depending on the degree of weathering, it may be challenging even to tell if a particular rock is igneous, sedimentary, or metamorphic! In any case, when learning to classify rocks there is no substitute for looking ...
Chapter 23 Vocabulary- The Ocean Floor Read each definition
... Active continental margin: A continental margin at which an oceanic plate is subducting under a continental plate, characterized by the presence of a narrow continental shelf and a deep sea trench., characterized by the presence of a narrow continental shelf and a deep sea trench. ...
... Active continental margin: A continental margin at which an oceanic plate is subducting under a continental plate, characterized by the presence of a narrow continental shelf and a deep sea trench., characterized by the presence of a narrow continental shelf and a deep sea trench. ...
Geology of Galaringi and the Dundas Quarry
... And then about 175 million years ago, instability was again experienced by the crust and volcanoes again were formed. Apparently not all the volcanoes were successful in forming mountains, and some only achieved the formation of a neck and vent (because we can’t find much evidence of lava flows of t ...
... And then about 175 million years ago, instability was again experienced by the crust and volcanoes again were formed. Apparently not all the volcanoes were successful in forming mountains, and some only achieved the formation of a neck and vent (because we can’t find much evidence of lava flows of t ...
Metamorphism
... • The transition of one rock into another by temperatures and/or pressures unlike those in which it formed • Metamorphic rocks are produced from • Igneous rocks • Sedimentary rocks • Other metamorphic rocks ...
... • The transition of one rock into another by temperatures and/or pressures unlike those in which it formed • Metamorphic rocks are produced from • Igneous rocks • Sedimentary rocks • Other metamorphic rocks ...
Ch 21 Fossils and the Rock Record
... Mesozoic ends with a large extinction event. This sharp division in time is the K T boundary -Dinosaurs and many other groups go extinct here -65 million years ago ...
... Mesozoic ends with a large extinction event. This sharp division in time is the K T boundary -Dinosaurs and many other groups go extinct here -65 million years ago ...
precambrian rocks of the taos range and vicinity, northern new mexico
... Thick sequences composed dominantly of amphibolites occur in the Long Canyon area north of Taos Ski Valley and on the south side of Red River east of Columbine Creek (fig. 1). The former occurrence is very poorly exposed and highly altered, and its stratigraphic relationship to the Gold Hill volcani ...
... Thick sequences composed dominantly of amphibolites occur in the Long Canyon area north of Taos Ski Valley and on the south side of Red River east of Columbine Creek (fig. 1). The former occurrence is very poorly exposed and highly altered, and its stratigraphic relationship to the Gold Hill volcani ...
U-Pb MINERAL AGE DETERMINATIONS FROM ARCHEAN ROCKS
... The western and northern part of the Archean in eastern Lapland is formed by the VintilänkairaKemihaara granitoid complex, which in the north is terminated by the Lapland granulite belt and is elsewhere bordered by the Tulppio metavolcanic belt and Paleoproterozoic schists. The complex is the least ...
... The western and northern part of the Archean in eastern Lapland is formed by the VintilänkairaKemihaara granitoid complex, which in the north is terminated by the Lapland granulite belt and is elsewhere bordered by the Tulppio metavolcanic belt and Paleoproterozoic schists. The complex is the least ...
Chapter 9 Proterozoic
... Midcontinent Rift • Grenville deformation in Laurentia – was accompanied by the origin – of the Midcontinent rift, • a long narrow continental trough bounded by faults, • extending from the Lake Superior basin southwest into Kansas, • and a southeasterly branch extends through Michigan into Ohio ...
... Midcontinent Rift • Grenville deformation in Laurentia – was accompanied by the origin – of the Midcontinent rift, • a long narrow continental trough bounded by faults, • extending from the Lake Superior basin southwest into Kansas, • and a southeasterly branch extends through Michigan into Ohio ...
Tertiary Development of the Zagros Mountains
... reservoirs in the world. The location of this fold and thrust belt within the Arabian Plate region, as well as the quality of the source rocks is are some of the reasons for its significant petroleum reserves. Several key ingredients are essential for the production and entrapment of hydrocarbons wi ...
... reservoirs in the world. The location of this fold and thrust belt within the Arabian Plate region, as well as the quality of the source rocks is are some of the reasons for its significant petroleum reserves. Several key ingredients are essential for the production and entrapment of hydrocarbons wi ...
Water-rock interaction observed in the brittle-plastic transition zone
... The studied samples were collected from a quarry located at Hirusone (the location is shown in Fig. 1), about 200 m east of the main cataclasite zone. Weakly to strongly deformed granodiorites (deformed at lower temperature) are exposed in a quarry. Figure 2(a) shows a distribution of fault rocks ov ...
... The studied samples were collected from a quarry located at Hirusone (the location is shown in Fig. 1), about 200 m east of the main cataclasite zone. Weakly to strongly deformed granodiorites (deformed at lower temperature) are exposed in a quarry. Figure 2(a) shows a distribution of fault rocks ov ...
TECTONIC PLATES
... lithosphere is the cool, rigid, outermost layer of Earth. It is broken into large, thick pieces called tectonic plates. These tectonic plates contain different kinds of crust. Crust beneath the oceans (oceanic crust) is denser than crust beneath the continents (continental crust). Scientists have gi ...
... lithosphere is the cool, rigid, outermost layer of Earth. It is broken into large, thick pieces called tectonic plates. These tectonic plates contain different kinds of crust. Crust beneath the oceans (oceanic crust) is denser than crust beneath the continents (continental crust). Scientists have gi ...
Sorting - HCC Learning Web
... Shields - Large areas of exposed crystalline rocks. Platforms - Ancient crystalline rocks covered by flat-lying or gently warped sedimentary rocks. ...
... Shields - Large areas of exposed crystalline rocks. Platforms - Ancient crystalline rocks covered by flat-lying or gently warped sedimentary rocks. ...
Great Lakes tectonic zone
The Great Lakes tectonic zone is bounded by South Dakota at its tip and heads northeast to south of Duluth, Minnesota, then heads east through northern Wisconsin, Marquette, Michigan, and then trends more northeasterly to skim the northern-most shores of lakes Michigan and Huron before ending in the Sudbury, Ontario, Canada, area.During the Late Archean Era the Algoman orogeny added landmass to the Superior province by volcanic activity and continental collision along a boundary that stretches from present-day South Dakota, U.S., into the Lake Huron region near Sudbury, Ontario, Canada.This crustal boundary is the Great Lakes tectonic zone. It is 1,400 km (870 mi) long, and separates the older Archean gneissic terrane to the south from younger Late Archean greenstone-granite terrane to the north.The zone is characterized by active compression during the Algoman orogeny (about 2,700 million years ago), a pulling-apart (extensional) tectonics (2,450 to 2,100 million years ago), a second compression during the Penokean orogeny (1,900 to 1,850 million years ago), a second extension during Middle Proterozoic time (1,600 million years ago) and minor reactivation during Phanerozoic time (the past 500 million years).Collision began along the Great Lakes tectonic zone (GLTZ) with the Algoman mountain-building event and continued for tens of millions of years. During the formation of the GLTZ, the gneissic Minnesota River Valley subprovince was thrust up onto the Superior province's edge as it consumed the Superior province's oceanic crust. Fragmentation of the Kenorland supercontinent began 2,450 million years ago and was completed by 2,100 million years ago. The Wyoming province is the continental landmass that is hypothesized to have rifted away from the southern Superior province portion of Kenorland, before moving rapidly west and docking with the Laurentia supercontinent 1,850 to 1,715 million years ago. Sedimentation from the GLTZ-rifting environment continued into the Penokean orogeny, which is the next major tectonic event in the Great Lakes region. Several earthquakes have been documented in Minnesota, Michigan's Upper Peninsula and Sudbury in the last 120 years along the GLTZ.