Plate Tectonics PPT #1
... western Africa and eastern Brazil were the same. The Caledonian and Appalachian Mountains line up when North America and Europe are placed next to each other. ...
... western Africa and eastern Brazil were the same. The Caledonian and Appalachian Mountains line up when North America and Europe are placed next to each other. ...
When did Making Mountains the Modern Way Begin?
... The process of mountain building and major structural change on Earth underwent a significant change in style in the deep geological past. Early Earth was hotter and as a result the planet’s outer lithospheric rock layer was thinner and weaker, consequently there was no plate tectonism or subduction ...
... The process of mountain building and major structural change on Earth underwent a significant change in style in the deep geological past. Early Earth was hotter and as a result the planet’s outer lithospheric rock layer was thinner and weaker, consequently there was no plate tectonism or subduction ...
5 THE EARTH`S CRUST 5.1 Text 5 Most mineral resources are
... and a less well defined structure. It contains less iron and magnesium than the oceanic crust, but relatively more silicon, aluminium, sodium and potassium. It is quite possible to say that the rock-forming processes which we can observe today have been active for at least 3,500 million years. The r ...
... and a less well defined structure. It contains less iron and magnesium than the oceanic crust, but relatively more silicon, aluminium, sodium and potassium. It is quite possible to say that the rock-forming processes which we can observe today have been active for at least 3,500 million years. The r ...
From the Nebo website: http://www.nebo.edu/misc
... Rocks From the Nebo website: http://www.nebo.edu/misc/learning_resources/ppt/ This is the rocks.ppt PowerPoint. ...
... Rocks From the Nebo website: http://www.nebo.edu/misc/learning_resources/ppt/ This is the rocks.ppt PowerPoint. ...
A Tectonic explanation of the May 12, 2008, Sichuan Earthquake
... continental collision, visit: http://emvc.geol.ucsb.edu/downloads.php ...
... continental collision, visit: http://emvc.geol.ucsb.edu/downloads.php ...
the theory of continental drift
... The main reason that Wegener's hypothesis was not accepted was because he suggested no mechanism for moving the continents. He thought the force of Earth's spin was sufficient to cause continents to move, but geologists knew that rocks are too strong for this to be true. It wasn't until 1928 that a ...
... The main reason that Wegener's hypothesis was not accepted was because he suggested no mechanism for moving the continents. He thought the force of Earth's spin was sufficient to cause continents to move, but geologists knew that rocks are too strong for this to be true. It wasn't until 1928 that a ...
volcanoes-natural-processes
... • To understand the natural processes affecting the distribution of volcanic environments ...
... • To understand the natural processes affecting the distribution of volcanic environments ...
Classification of Igneous Rocks
... This table includes most of the names of common igneous rocks. The rows include rocks with the same composition – mineralogic and/or chemical. The columns contain rocks with the same igneous texture. XXX indicates those rocks that do not actually occur. Ultramafic rocks are always phaneritic becaus ...
... This table includes most of the names of common igneous rocks. The rows include rocks with the same composition – mineralogic and/or chemical. The columns contain rocks with the same igneous texture. XXX indicates those rocks that do not actually occur. Ultramafic rocks are always phaneritic becaus ...
Rocks and the Rock Cycle
... As you may recall the rock cycle is the changing of rocks from one kind to another over long periods of time. But what are these igneous, sedimentary, and metamorphic rocks anyway? ...
... As you may recall the rock cycle is the changing of rocks from one kind to another over long periods of time. But what are these igneous, sedimentary, and metamorphic rocks anyway? ...
Structural geology of the Mount Polley porphyry
... Intermontane Belt close to its tectonic boundary with the Omineca Belt (Logan et al., 2005) (Fig. 1). The Quesnel terrane is an island arc, fault bounded to the east by the pericratonic Kootenay terrane and the oceanic Slide Mountain terrane, and to the west by the oceanic Cache Creek terrane. Fauna ...
... Intermontane Belt close to its tectonic boundary with the Omineca Belt (Logan et al., 2005) (Fig. 1). The Quesnel terrane is an island arc, fault bounded to the east by the pericratonic Kootenay terrane and the oceanic Slide Mountain terrane, and to the west by the oceanic Cache Creek terrane. Fauna ...
Earth's Structure - Kentucky Department of Education
... lived long ago. •similar fossils have been discovered in matching coastlines on different continents. ...
... lived long ago. •similar fossils have been discovered in matching coastlines on different continents. ...
6.2 Plate Tectonics
... tectonic plates, move and change shape. Tectonic Plates – (pg. 199) a block of lithosphere that consists of the crust and the rigid, outermost part of the mantle I. Tectonic Plates (pg. ...
... tectonic plates, move and change shape. Tectonic Plates – (pg. 199) a block of lithosphere that consists of the crust and the rigid, outermost part of the mantle I. Tectonic Plates (pg. ...
Caledonian Structures of the Southern Uplands
... The deformation events that are the subject of this volume are generally construed to be the result of the closing of the Iapetus between the mid-Ordovician Period and the early Devonian, associated with marginally directed subduction zones. The models for this closure are largely based on Dewey (19 ...
... The deformation events that are the subject of this volume are generally construed to be the result of the closing of the Iapetus between the mid-Ordovician Period and the early Devonian, associated with marginally directed subduction zones. The models for this closure are largely based on Dewey (19 ...
Physical Q2 11-12 2016 questions - GEO
... 22. A fold that is arch-like and has completely folded over itself is: A) an recumbent anticline B) an overturned syncline C) a plunging anticline D) a divergent anticline E) a recumbent syncline 23. Which of the following statements most accurately describes the composition of continental crust? A) ...
... 22. A fold that is arch-like and has completely folded over itself is: A) an recumbent anticline B) an overturned syncline C) a plunging anticline D) a divergent anticline E) a recumbent syncline 23. Which of the following statements most accurately describes the composition of continental crust? A) ...
Plate Tectonics - Effingham County Schools
... • Asthenosphere- a layer of hotter, softer rock in the upper mantle. ...
... • Asthenosphere- a layer of hotter, softer rock in the upper mantle. ...
Powerpoint - Fort Bend ISD
... • Magma comes up from inside the Earth, cools and hardens and creates new sea floor. • The rock at the mid-ocean ridge is the youngest and gets older as it moves farther away from the ridges. ...
... • Magma comes up from inside the Earth, cools and hardens and creates new sea floor. • The rock at the mid-ocean ridge is the youngest and gets older as it moves farther away from the ridges. ...
Review Sheet for Test
... Convection- Hot rock from deep within the Earth rises, but cooler rock near the surface sinks Slab Pull – The edge of the tectonic plate that contains oceanic lithosphere sinks and pulls the rest of the tectonic plate with it. Ridge Push – At mid-ocean ridges, the oceanic lithosphere is higher than ...
... Convection- Hot rock from deep within the Earth rises, but cooler rock near the surface sinks Slab Pull – The edge of the tectonic plate that contains oceanic lithosphere sinks and pulls the rest of the tectonic plate with it. Ridge Push – At mid-ocean ridges, the oceanic lithosphere is higher than ...
Evolution of the Ocean Basins
... • When separation occurs, gap is filled with basalt – Thin and dense oceanic crust is below sea level ...
... • When separation occurs, gap is filled with basalt – Thin and dense oceanic crust is below sea level ...
Continental Drift and Plate Tectonics
... Stratigraphic evidence Matching sequence of rock strata on different continents Precambrian shields ...
... Stratigraphic evidence Matching sequence of rock strata on different continents Precambrian shields ...
Triassic and Upper Cretaceous Paleo
... Leibnizstr. 10, D-38678 Clausthal-Zellerfeld, Germany, [email protected] ...
... Leibnizstr. 10, D-38678 Clausthal-Zellerfeld, Germany, [email protected] ...
Metamorphic Igneous Sedimentary 3 Major Groups of Rocks
... coral reef in a tropical sea about 250 million years ago. In fact, Texas contains mostly sedimentary rocks, with east Texas underlain by a Cretaceous and younger sequence of sediments. Sedimentary rocks can be found in almost all areas of Texas, save for the High Plains, which are composed of mostly ...
... coral reef in a tropical sea about 250 million years ago. In fact, Texas contains mostly sedimentary rocks, with east Texas underlain by a Cretaceous and younger sequence of sediments. Sedimentary rocks can be found in almost all areas of Texas, save for the High Plains, which are composed of mostly ...
Unit 2 Earth Structures 1. The movement of tectonic plates is so slow
... A. The plate boundary inside Africa is too small to form earthquakes. B. The landmass of Africa is too great to be affected by earthquakes. C. There are no faults in Africa. D. The entire continent of Africa is located on a single continental tectonic plate. 18. Which of these answers best describes ...
... A. The plate boundary inside Africa is too small to form earthquakes. B. The landmass of Africa is too great to be affected by earthquakes. C. There are no faults in Africa. D. The entire continent of Africa is located on a single continental tectonic plate. 18. Which of these answers best describes ...
Topic 6 Earth`s Internal Structure and Tectonic Process Geography
... Chemical sedimentary rock - limestone lithification of organics ...
... Chemical sedimentary rock - limestone lithification of organics ...
Sea Floor Spreading - Smyth County Schools
... The action at divergent plate boundaries. By Diana L. Duckworth Rustburg High School Campbell County, VA ...
... The action at divergent plate boundaries. By Diana L. Duckworth Rustburg High School Campbell County, VA ...
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.