Lecture W12-W13-L28
... Most of the magmas are produced on plate boundaries (mid-ocean ridges and subductions); but significant production also in intra-plate conditions. How significant? Intraplate activity is typically discontinuous, so it is difficult to integrate on a long time period and assess its importance. 1-10% o ...
... Most of the magmas are produced on plate boundaries (mid-ocean ridges and subductions); but significant production also in intra-plate conditions. How significant? Intraplate activity is typically discontinuous, so it is difficult to integrate on a long time period and assess its importance. 1-10% o ...
Module Plate Tectonics
... of Earth’s mantle called the asthenosphere. Earth’s outer shell has layers that behave by breaking or stretching. The rigid lithosphere is cracked and broken like the shell of a hard-boiled egg. These curved pieces of the outer shell move around on the asthenosphere as the interior of the earth move ...
... of Earth’s mantle called the asthenosphere. Earth’s outer shell has layers that behave by breaking or stretching. The rigid lithosphere is cracked and broken like the shell of a hard-boiled egg. These curved pieces of the outer shell move around on the asthenosphere as the interior of the earth move ...
Plate Tectonics Power Point
... The term “plate” refers to the subdivision of the earth’s crust and lithosphere. The term “tectonics” refers to the deformation of the earth’s crust. “Plate tectonics” refers to the formation and migration of these plates. Subduction zone is where two plates come together, and one is forced below th ...
... The term “plate” refers to the subdivision of the earth’s crust and lithosphere. The term “tectonics” refers to the deformation of the earth’s crust. “Plate tectonics” refers to the formation and migration of these plates. Subduction zone is where two plates come together, and one is forced below th ...
The following reading should be annotated by each student as they
... Tectonic plates When Alfred Wegener first proposed the idea of continental drift, it didn’t quite explain the full story. While he correctly showed that Africa and South America fitted together, his model wasn’t able to explain the violent forces that occur around the Earth’s crust. It wasn’t until ...
... Tectonic plates When Alfred Wegener first proposed the idea of continental drift, it didn’t quite explain the full story. While he correctly showed that Africa and South America fitted together, his model wasn’t able to explain the violent forces that occur around the Earth’s crust. It wasn’t until ...
plate_tectonics
... Mantle (continued) b. convection current (cc) – flow that transfers heat within a fluid. i. heating and cooling of fluid, changes in density, and force of gravity cause convection currents (cc). c. (CC) occur within the asthenosphere creating movement ...
... Mantle (continued) b. convection current (cc) – flow that transfers heat within a fluid. i. heating and cooling of fluid, changes in density, and force of gravity cause convection currents (cc). c. (CC) occur within the asthenosphere creating movement ...
Day 7 Presentation - Earthquakes and Plate Tectonics
... – As plates move apart new material is erupted to fill the gap ...
... – As plates move apart new material is erupted to fill the gap ...
Michela Griffin
... that floats on the soft underlying layers- where the seafloor and continents are ...
... that floats on the soft underlying layers- where the seafloor and continents are ...
plate tectonics
... Fahrenheit) and can reach more than 55 meters (180 feet) high. There are 40 to 50 hot spots around the world, including near the Galapagos Islands and Iceland. Hot spots can create entire chains of islands, like the U.S. state of Hawaii. Hawaii is on the Pacific plate, an enormous section of the Ear ...
... Fahrenheit) and can reach more than 55 meters (180 feet) high. There are 40 to 50 hot spots around the world, including near the Galapagos Islands and Iceland. Hot spots can create entire chains of islands, like the U.S. state of Hawaii. Hawaii is on the Pacific plate, an enormous section of the Ear ...
Volcanoes and Igneous Activity Earth - Chapter 4
... Testing the plate tectonics model Plate tectonics and earthquakes • Plate tectonics model accounts for the global distribution of earthquakes – Absence of deep-focus earthquakes along the oceanic ridge is consistent with tectonic theory – Deep-focus earthquakes associated with subduction zones – Th ...
... Testing the plate tectonics model Plate tectonics and earthquakes • Plate tectonics model accounts for the global distribution of earthquakes – Absence of deep-focus earthquakes along the oceanic ridge is consistent with tectonic theory – Deep-focus earthquakes associated with subduction zones – Th ...
Review Topics for Test I
... Features of subduction zones: subducting crust, deep ocean trench, overriding crust, area of deformation crust and ocean floor sediments (become metamorphic rocks), partial melting along the ocean crust (slab) at about 100km depth, line of volcanoes on overriding plate, back arc basin behind the vol ...
... Features of subduction zones: subducting crust, deep ocean trench, overriding crust, area of deformation crust and ocean floor sediments (become metamorphic rocks), partial melting along the ocean crust (slab) at about 100km depth, line of volcanoes on overriding plate, back arc basin behind the vol ...
Dynamic Earth Test
... 5. When an earthquake occurs the shock waves go out in all directions. These can be detected by seismic stations. On this map the seismic stations are located at points A, B and C near a large lake. The waves were detected at A after 12 minutes, B after 8 minutes and C after 6 minutes. Where is the ...
... 5. When an earthquake occurs the shock waves go out in all directions. These can be detected by seismic stations. On this map the seismic stations are located at points A, B and C near a large lake. The waves were detected at A after 12 minutes, B after 8 minutes and C after 6 minutes. Where is the ...
57. Practice reading seismographs: Can You Read a Quake?
... c. Identical sedimentary rocks of the same age at widely separated locations d. All of the above 43. Fossils used by Wegener to support the theory of continental drift had to be found on different___ continents. The more continents a fossil was found upon the more helpful it was in finding connectio ...
... c. Identical sedimentary rocks of the same age at widely separated locations d. All of the above 43. Fossils used by Wegener to support the theory of continental drift had to be found on different___ continents. The more continents a fossil was found upon the more helpful it was in finding connectio ...
Fortune Teller
... 1. Most volcanoes and earthquakes are located at the boundary of plates (faults). 2. Weathering is the process of breaking down rocks chemically and physically. 3. Erosion causes weathered rocks and soil to be washed away. 4. Sedimentary – layers of sediment cemented together Igneous – melting and ...
... 1. Most volcanoes and earthquakes are located at the boundary of plates (faults). 2. Weathering is the process of breaking down rocks chemically and physically. 3. Erosion causes weathered rocks and soil to be washed away. 4. Sedimentary – layers of sediment cemented together Igneous – melting and ...
1. Earth`s plates are made up of the crust and the upper mantle
... 3. Tectonism results from the release and redistribution of energy from Earth's core. There are two components to this energy: heat and _____. a) shear b) stress c) gravity d) pressure 4. Boundaries at which plates collide are called _____. a) reverse b) divergent c) transform d) convergent 5. The t ...
... 3. Tectonism results from the release and redistribution of energy from Earth's core. There are two components to this energy: heat and _____. a) shear b) stress c) gravity d) pressure 4. Boundaries at which plates collide are called _____. a) reverse b) divergent c) transform d) convergent 5. The t ...
plate tectonics test
... America is formed by the oceanic crust of the Nazca plate subducting beneath the continental crust of the South American plate. Ocean trenches can also be formed when two plates carrying oceanic crust meet. These are more rare. The Mariana Trench, in the South Pacific Ocean, is formed as the massive ...
... America is formed by the oceanic crust of the Nazca plate subducting beneath the continental crust of the South American plate. Ocean trenches can also be formed when two plates carrying oceanic crust meet. These are more rare. The Mariana Trench, in the South Pacific Ocean, is formed as the massive ...
The Theory of Plate Tectonics On a separate sheet of paper
... 7. Breaks in Earth’s crust where rocks have slipped past each other are called ...
... 7. Breaks in Earth’s crust where rocks have slipped past each other are called ...
Plate Tectonics - Duplin County Schools
... • Plate tectonics – Theory that the lithosphere is made up of plates that float on the asthenosphere and that the plates possibly are moved by convection currents. ...
... • Plate tectonics – Theory that the lithosphere is made up of plates that float on the asthenosphere and that the plates possibly are moved by convection currents. ...
Year 8 Tectonics
... Describes a volcano which has erupted in historical times (i.e. the last 2000 years) but not recently. Describes a volcano that has not erupted in historical times and is not expected to erupt ...
... Describes a volcano which has erupted in historical times (i.e. the last 2000 years) but not recently. Describes a volcano that has not erupted in historical times and is not expected to erupt ...
Lecture 25
... Composition more diverse and silicic Basalt generally occurs in subordinate quantities Also more explosive than the quiescent basalts Strato-volcanoes are the most common volcanic landform ...
... Composition more diverse and silicic Basalt generally occurs in subordinate quantities Also more explosive than the quiescent basalts Strato-volcanoes are the most common volcanic landform ...
Chapter 21- Planet Earth
... the theory that explains how the outer parts of Earth ______________________________, and that explains the relationships between _______________________________, sea-floor spreading, ____________________________, and volcanic activity ...
... the theory that explains how the outer parts of Earth ______________________________, and that explains the relationships between _______________________________, sea-floor spreading, ____________________________, and volcanic activity ...
Igneous Rock
... Igneous rocks are born in fire. There are two types of igneous rocks. The first type and most common are the intrusive igneous rocks. These rocks form when a pocket of magma (still underground) slowly cools down enough to form into solid rock. Great globs of molten rock rise toward the surface. Some ...
... Igneous rocks are born in fire. There are two types of igneous rocks. The first type and most common are the intrusive igneous rocks. These rocks form when a pocket of magma (still underground) slowly cools down enough to form into solid rock. Great globs of molten rock rise toward the surface. Some ...
Theory of Plate Tectonics
... – Basaltic (Mafic) rock • Continental plates - plates that make up the continents – 10 – 100 km thick – Granitic (Felsic) rock – Less dense than Mafic rock, therefore more buoyant than oceanic crust. ...
... – Basaltic (Mafic) rock • Continental plates - plates that make up the continents – 10 – 100 km thick – Granitic (Felsic) rock – Less dense than Mafic rock, therefore more buoyant than oceanic crust. ...
Large igneous province
A large igneous province (LIP) is an extremely large accumulation of igneous rocks, including liquid rock (intrusive) or volcanic rock formations (extrusive), when hot magma extrudes from inside the Earth and flows out. The source of many or all LIPs is variously attributed to mantle plumes or to processes associated with plate tectonics. Types of LIPs can include large volcanic provinces (LVP), created through flood basalt and large plutonic provinces (LPP). Eleven distinct flood basalt episodes occurred in the past 250 million years, creating volcanic provinces, which coincided with mass extinctions in prehistoric times. Formation depends on a range of factors, such as continental configuration, latitude, volume, rate, duration of eruption, style and setting (continental vs. oceanic), the preexisting climate state, and the biota resilience to change.