VIDEO WEB HIT HOMEWORK – part 2
... - Tectonic Province: small, independent pieces of continental crust that are were joined together by plate tectonic collisions - Convergent zones help build continents. ...
... - Tectonic Province: small, independent pieces of continental crust that are were joined together by plate tectonic collisions - Convergent zones help build continents. ...
Name: Section: Date: Plate Tectonics Learning Objectives
... Follow Up Question: Where does the “New Crust” come from? Where does the “old crust” go? ...
... Follow Up Question: Where does the “New Crust” come from? Where does the “old crust” go? ...
chapter 9 - Geoclassroom Home
... activity, the Grenville orogeny, and the Midcontinent rift, were important events in the evolution of Laurentia. Figure 9.5 Rocks of the Grenville Orogen Figure 9.6 The Midcontinent Rift Figure 9.7 Proterozoic Rocks in the Western United States and Canada 4. Sandstone-carbonate-shale assemblages dep ...
... activity, the Grenville orogeny, and the Midcontinent rift, were important events in the evolution of Laurentia. Figure 9.5 Rocks of the Grenville Orogen Figure 9.6 The Midcontinent Rift Figure 9.7 Proterozoic Rocks in the Western United States and Canada 4. Sandstone-carbonate-shale assemblages dep ...
Document
... Supercontinent breaks up 500 Million Years Ago – Warm shallow sea, Postdam Sandstone 60 to 15 Million Years Ago – Adirondacks begin to rise 1.6 Million Years Ago – Ice Ages begin ...
... Supercontinent breaks up 500 Million Years Ago – Warm shallow sea, Postdam Sandstone 60 to 15 Million Years Ago – Adirondacks begin to rise 1.6 Million Years Ago – Ice Ages begin ...
Brief Geologic History Of Virginia and the Mid-Atlantic
... is, without the underlying rocks they were originally deposited on. We presume the basement was continental crust, i.e. granite, but its size, shape, and position are unknown. Not much to go on, and a pretty vague picture, but this is typical for the oldest rocks in a region. At least we know that 1 ...
... is, without the underlying rocks they were originally deposited on. We presume the basement was continental crust, i.e. granite, but its size, shape, and position are unknown. Not much to go on, and a pretty vague picture, but this is typical for the oldest rocks in a region. At least we know that 1 ...
Overlying the Porcupine Volcanics is a sequence of fluvial (river deposited)
... of the North American continent during the late Precambrian Era. Rock strata within the mountains belong to the Keweenawan Supergroup, a thick sequence of volcanic and sedimentary rocks (exceeding 25 km) deposited about 1.1 billion years ago, during and shortly after an episode of continental riftin ...
... of the North American continent during the late Precambrian Era. Rock strata within the mountains belong to the Keweenawan Supergroup, a thick sequence of volcanic and sedimentary rocks (exceeding 25 km) deposited about 1.1 billion years ago, during and shortly after an episode of continental riftin ...
Tectonic change 1 Powerpoint presentation
... At least twice during this long period in Earth's history the positions of the continents and their effect upon ocean currents caused the Earth to enter an ice age (at about 2300 and 700 million years ago). There is evidence for this second ice age in rocks from the Skerries just to the north of Ang ...
... At least twice during this long period in Earth's history the positions of the continents and their effect upon ocean currents caused the Earth to enter an ice age (at about 2300 and 700 million years ago). There is evidence for this second ice age in rocks from the Skerries just to the north of Ang ...
Oil+Gas_104nd Edition_January 2016
... Figure 1 Map of the Namibian margin with seismic survey layout. Block Upon initial inspection the Namibian margin appears boundaries and well locations are also shown. Blue gradient reflects relatively simple. Extension and continental break up bathymetry, with darker shades representing deeper wate ...
... Figure 1 Map of the Namibian margin with seismic survey layout. Block Upon initial inspection the Namibian margin appears boundaries and well locations are also shown. Blue gradient reflects relatively simple. Extension and continental break up bathymetry, with darker shades representing deeper wate ...
Abstract of Referenced Article
... amphibolite-facies conditions (6 kbar and 580–640 °C). Within the Ammonoosuc Volcanics, a finegrained, garnet-, magnetite-, and amphibole-bearing quartzite forms a distinct stratigraphic horizon. The quartzite commonly shows delicate millimeter- to centimeter-thick layering, which is interpreted as ...
... amphibolite-facies conditions (6 kbar and 580–640 °C). Within the Ammonoosuc Volcanics, a finegrained, garnet-, magnetite-, and amphibole-bearing quartzite forms a distinct stratigraphic horizon. The quartzite commonly shows delicate millimeter- to centimeter-thick layering, which is interpreted as ...
Ch 10 ppt
... • thinner and finer grained away from the source area, • eventually grading into the carbonate cratonic facies • The clastic wedge resulting from the erosion of the Taconic Highlands is referred to ...
... • thinner and finer grained away from the source area, • eventually grading into the carbonate cratonic facies • The clastic wedge resulting from the erosion of the Taconic Highlands is referred to ...
Igneous Rocks
... • The pseudometamorphism bordering on witchcraft • The absolute lowest grade of metamorphism • Caused by weight (pressure) of overlying rocks • Creates non-foliated rocks – Ex. Bituminous coal ...
... • The pseudometamorphism bordering on witchcraft • The absolute lowest grade of metamorphism • Caused by weight (pressure) of overlying rocks • Creates non-foliated rocks – Ex. Bituminous coal ...
Petrogenetic and metallogenic significance of mafic
... tectonic boundaries and potentially record the development of precollisional extensional faults. Ongoing and related geochemical and geochronological studies should help to establish the temporal and genetic relationships between the dykes, volcanic sequences and mineralized ultramafic sills in the ...
... tectonic boundaries and potentially record the development of precollisional extensional faults. Ongoing and related geochemical and geochronological studies should help to establish the temporal and genetic relationships between the dykes, volcanic sequences and mineralized ultramafic sills in the ...
Intrusive Activity
... B. Magma can also cause blocks of rock to break off and sink into the magma, where the rocks may eventually melt. C. Magma can melt the rock into which it intrudes. ...
... B. Magma can also cause blocks of rock to break off and sink into the magma, where the rocks may eventually melt. C. Magma can melt the rock into which it intrudes. ...
Classifying Igneous Rock
... For a rock to be classified as igneous, it must have been melted at some time and then hardened to become solid again. When melted rock material (magma or lava) cools and hardens, it may form crystals, depending on how fast it. How fast the rock material cools depends on where it cools. If melted ro ...
... For a rock to be classified as igneous, it must have been melted at some time and then hardened to become solid again. When melted rock material (magma or lava) cools and hardens, it may form crystals, depending on how fast it. How fast the rock material cools depends on where it cools. If melted ro ...
The Restless Earth
... • Rift Zone – a set of deep cracks that forms between two tectonic plates that are pulling away from each other • As tectonic plates pull apart, stress between the plates causes a series of faults to form along the rift zone ...
... • Rift Zone – a set of deep cracks that forms between two tectonic plates that are pulling away from each other • As tectonic plates pull apart, stress between the plates causes a series of faults to form along the rift zone ...
example from the Australian plate
... has flipped and the next scenario is an Andean margin along northern Australia! ...
... has flipped and the next scenario is an Andean margin along northern Australia! ...
0113295 390 2b 0/.
... vey of the province was sent down by message to the legislative assembly, with a favourable recommendation from his ExcellenIt was read cy Sir John Colborne, Lt. Gov. of Upper Canada. and referred to the committee of supply, but not considered. In December, 1832, a petition from the York Literary an ...
... vey of the province was sent down by message to the legislative assembly, with a favourable recommendation from his ExcellenIt was read cy Sir John Colborne, Lt. Gov. of Upper Canada. and referred to the committee of supply, but not considered. In December, 1832, a petition from the York Literary an ...
Imaging continental collision and subduction in the Pamir mountain
... Subduction of continental crust is the mode of shortening in continental collision that is the least well understood. It is known to occur, as testified e.g., by now exhumed ultra-high-pressure rocks, despite the fact that continental crust is generally too buoyant to submerge into the mantle. Conti ...
... Subduction of continental crust is the mode of shortening in continental collision that is the least well understood. It is known to occur, as testified e.g., by now exhumed ultra-high-pressure rocks, despite the fact that continental crust is generally too buoyant to submerge into the mantle. Conti ...
1 - My CCSD
... 15. In an Oceanic-Continental Convergent Boundary, describe what happens and the geologic features that form there. Draw a quick sketch of an Oceanic-Continental Convergent Boundary: 16. What can occur at a Transform Boundary? Draw a quick sketch of a transform boundary: 17. In an Oceanic-Oceanic Di ...
... 15. In an Oceanic-Continental Convergent Boundary, describe what happens and the geologic features that form there. Draw a quick sketch of an Oceanic-Continental Convergent Boundary: 16. What can occur at a Transform Boundary? Draw a quick sketch of a transform boundary: 17. In an Oceanic-Oceanic Di ...
Geologic Trips, Sierra Nevada
... plutons may have many other distinct characteristics. Some plutons are fine grained, some are coarse grained, and some have large phenocrysts. Some plutons have layering or segregation of the minerals. And some plutons have dark blobs, called xenoliths, formed when parts of the intruded roof or wall ...
... plutons may have many other distinct characteristics. Some plutons are fine grained, some are coarse grained, and some have large phenocrysts. Some plutons have layering or segregation of the minerals. And some plutons have dark blobs, called xenoliths, formed when parts of the intruded roof or wall ...
Faults - School
... Batholiths: huge bodies of intrusive igneous rock • Form hilly or mountainous uplands • Monadnock: a mountain that rises out of a surrounding plain and that develops because it consists of more resistant rock than the bedrock of the surrounding region ...
... Batholiths: huge bodies of intrusive igneous rock • Form hilly or mountainous uplands • Monadnock: a mountain that rises out of a surrounding plain and that develops because it consists of more resistant rock than the bedrock of the surrounding region ...
Research Focus: Crust formation in the western United
... Between about 1.8–1.6 Ga, an accretionary belt ~1300 km wide was added to the southern margin of the Archean Wyoming craton. In the prevailing arc-accretion model (Condie, 1982; Karlstrom and Bowring, 1988; 1993), most of this material is considered to be mantle-derived juvenile crust, and therefore ...
... Between about 1.8–1.6 Ga, an accretionary belt ~1300 km wide was added to the southern margin of the Archean Wyoming craton. In the prevailing arc-accretion model (Condie, 1982; Karlstrom and Bowring, 1988; 1993), most of this material is considered to be mantle-derived juvenile crust, and therefore ...
Geologic Trips San Francisco and the Bay Area
... far from shore. The western edge of the North American plate was 100 miles to the east, near the present-day Sierra foothills. There was a subduction zone along the western boundary of the North American plate, near the present-day mother lode, and the oceanic plate under the ancient Pacific was mov ...
... far from shore. The western edge of the North American plate was 100 miles to the east, near the present-day Sierra foothills. There was a subduction zone along the western boundary of the North American plate, near the present-day mother lode, and the oceanic plate under the ancient Pacific was mov ...
Igneous Rock - East Hanover Township School District
... D) Basaltic lava is fluid and flows freely from volcanoes in Hawaii, such as Kilauea. E) Basalt is the most common rock type in the Earth's crust (the outer 10 to 50 km). In fact, most of the ocean floor is made of basalt ...
... D) Basaltic lava is fluid and flows freely from volcanoes in Hawaii, such as Kilauea. E) Basalt is the most common rock type in the Earth's crust (the outer 10 to 50 km). In fact, most of the ocean floor is made of basalt ...
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.