Mountains Without Collision: Orogenic Activity in Accretionary
... upper mantle) at tectonic plate boundaries and have been the major sites of continental growth and mineralization throughout Earth history. This project will determine if the growth of these mountain belts is the result of local processes specific to each plate boundary or a consequence of global pl ...
... upper mantle) at tectonic plate boundaries and have been the major sites of continental growth and mineralization throughout Earth history. This project will determine if the growth of these mountain belts is the result of local processes specific to each plate boundary or a consequence of global pl ...
WELCOME BACK! - Year 6 and 7 Mathematics, Science and
... The Theory of Continental Drift: Continental Drift – The continents have not always been in their present positions, but have drifted to these locations over millions of years. ...
... The Theory of Continental Drift: Continental Drift – The continents have not always been in their present positions, but have drifted to these locations over millions of years. ...
Tectonic JEOPARDY!
... If the formula for Density is Mass divided by Volume, how can heat change an object’s density? ...
... If the formula for Density is Mass divided by Volume, how can heat change an object’s density? ...
Name PLATE TECTONICS (75 points) Multiple Choice – 2 Points
... 30. As the oceanic plate is subducted, the plate melts and forms magma, which rises toward the surface and erupts as lava, forming volcanoes. The Cascade Mountains. 31. Volcanoes also can form at hot spots in the middle of continental or oceanic plates. At a hot spot, magma from the mantle melts thr ...
... 30. As the oceanic plate is subducted, the plate melts and forms magma, which rises toward the surface and erupts as lava, forming volcanoes. The Cascade Mountains. 31. Volcanoes also can form at hot spots in the middle of continental or oceanic plates. At a hot spot, magma from the mantle melts thr ...
Plate Tectonics “The Grand Unifying Theory”
... – Location and depth of earthquakes (Benioff zone) and style of volcanism – Age of seafloor rocks and sediments – Hotspot traces and ocean island chains ...
... – Location and depth of earthquakes (Benioff zone) and style of volcanism – Age of seafloor rocks and sediments – Hotspot traces and ocean island chains ...
Structure of the Earth
... Lithosphere: 100-150 km thick – Includes crust and rigid upper mantle – This is the rigid plate of plate tectonics – Base is defined by 1280ºC boundary ...
... Lithosphere: 100-150 km thick – Includes crust and rigid upper mantle – This is the rigid plate of plate tectonics – Base is defined by 1280ºC boundary ...
Computer Lab Day
... 3. Describe how the gap is filled when two tectonic plates move away from each other. 3. When two tectonic plates move away from each other, the gap is filled by hot molten rock (magma) that rises from the asthenosphere and cools. This cooled magma forms new lithospheric rock. ...
... 3. Describe how the gap is filled when two tectonic plates move away from each other. 3. When two tectonic plates move away from each other, the gap is filled by hot molten rock (magma) that rises from the asthenosphere and cools. This cooled magma forms new lithospheric rock. ...
Syllabus 11/11
... Wednesday 11/13: Goal – Students will relate the structure of the Earth to the Continental Drift Theory. 1. Notes on plate tectonics. 2. Finish Continental Drift Lab. 3. Reading “Trapped in Time”. (if time permits) Homework: Answer these questions on a separate piece of paper: 1. What is the lithosp ...
... Wednesday 11/13: Goal – Students will relate the structure of the Earth to the Continental Drift Theory. 1. Notes on plate tectonics. 2. Finish Continental Drift Lab. 3. Reading “Trapped in Time”. (if time permits) Homework: Answer these questions on a separate piece of paper: 1. What is the lithosp ...
The African Plate: tapping 4 billion years of geodynamics and Earth
... African plate is nearly stationary, and in an embryonic state of dividing into two new plates. Second, whereas the bimodal topography of most continents can be related to processes across compressional plate tectonic margins, this is not so for Africa. Africa is surrounded by more than 90% by extens ...
... African plate is nearly stationary, and in an embryonic state of dividing into two new plates. Second, whereas the bimodal topography of most continents can be related to processes across compressional plate tectonic margins, this is not so for Africa. Africa is surrounded by more than 90% by extens ...
Plate Tectonics*what is it?
... the front edge of the continental plate. ii. Volcanoes – includes oceanic and continental; continental plate melts due to friction and extreme heat; melted plate rises up through crust and cools when it reaches surface iii. Volcanic island arc- includes only oceanic plates; ...
... the front edge of the continental plate. ii. Volcanoes – includes oceanic and continental; continental plate melts due to friction and extreme heat; melted plate rises up through crust and cools when it reaches surface iii. Volcanic island arc- includes only oceanic plates; ...
Layers of the Earth
... . The crust of the Earth is broken into many pieces called plates. The plates "float" on the soft, plastic mantle which is located below the crust. These plates usually move along smoothly but sometimes they stick and build up pressure. The pressure builds and the rock bends until it snaps. When thi ...
... . The crust of the Earth is broken into many pieces called plates. The plates "float" on the soft, plastic mantle which is located below the crust. These plates usually move along smoothly but sometimes they stick and build up pressure. The pressure builds and the rock bends until it snaps. When thi ...
Layers of the Earth
... . The crust of the Earth is broken into many pieces called plates. The plates "float" on the soft, plastic mantle which is located below the crust. These plates usually move along smoothly but sometimes they stick and build up pressure. The pressure builds and the rock bends until it snaps. When thi ...
... . The crust of the Earth is broken into many pieces called plates. The plates "float" on the soft, plastic mantle which is located below the crust. These plates usually move along smoothly but sometimes they stick and build up pressure. The pressure builds and the rock bends until it snaps. When thi ...
Eighteenth lecture
... of California and the Gorda Ridge. Shallow subduction of the Farallon Plate is believed to also be a major factor. (The Juan de Fuca Plate and Gorda Plate are small remnants of the Farallon Plate.) ...
... of California and the Gorda Ridge. Shallow subduction of the Farallon Plate is believed to also be a major factor. (The Juan de Fuca Plate and Gorda Plate are small remnants of the Farallon Plate.) ...
Natural Hazards Internal Structure of the Earth and Plate Tectonics 1
... 36) Describe how the Hawaiian Islands were formed and explain how they are evidence for plate motion. 37) Describe the theory of continental drift and explain how it relates to Plate Tectonics. 38) Describe the mechanisms of Ridge-push and Slab-pull and explain which one is the more important proces ...
... 36) Describe how the Hawaiian Islands were formed and explain how they are evidence for plate motion. 37) Describe the theory of continental drift and explain how it relates to Plate Tectonics. 38) Describe the mechanisms of Ridge-push and Slab-pull and explain which one is the more important proces ...
METAMORPHISM & METAMORPHIC ROCKS
... • Continental shelf, slope, rise • The Continental Rise – Types of Deposition • From turbidity currents • From contour currents ...
... • Continental shelf, slope, rise • The Continental Rise – Types of Deposition • From turbidity currents • From contour currents ...
An introduction to processes at plate boundaries
... two plates move towards each other and the denser oceanic crust subducts (sinks) beneath the continental crust. This forms an ocean trench. The sinking oceanic crust eventually melts due to heat and pressure created by friction, which is caused by the tectonic plates moving. There is also heat and p ...
... two plates move towards each other and the denser oceanic crust subducts (sinks) beneath the continental crust. This forms an ocean trench. The sinking oceanic crust eventually melts due to heat and pressure created by friction, which is caused by the tectonic plates moving. There is also heat and p ...
Thomas Martin SIO 226 Paper Review Week 1 Isacks et al., 1968
... of epicenters and how they're located on the borders of plates. The authors are hypothesising that seismology will be extremely important in “New Global Tectonics”. Today, students drop the “new” as the ideas in the paper today are considered the standard, and are taught in current undergraduate cou ...
... of epicenters and how they're located on the borders of plates. The authors are hypothesising that seismology will be extremely important in “New Global Tectonics”. Today, students drop the “new” as the ideas in the paper today are considered the standard, and are taught in current undergraduate cou ...
layers of the Earth are the crust
... • The crust is the layer that forms the outer “skin” of the earth • It is a layer of solid rock that includes both dry land and the ocean floor. • It is the thinnest layer of the earth and is between 5-100 km thick. • It is thickest under mountains and thinnest beneath the ocean. • 2 types of crust ...
... • The crust is the layer that forms the outer “skin” of the earth • It is a layer of solid rock that includes both dry land and the ocean floor. • It is the thinnest layer of the earth and is between 5-100 km thick. • It is thickest under mountains and thinnest beneath the ocean. • 2 types of crust ...
The Layers of the Earth
... Earth. The Mantle is made up of minerals rich in the elements iron, magnesium, silica, and oxygen. The Mantle makes up approximately ~85% of the Earth's volume. It is seperated from the crust by a sharp change to higher density and seismic velocity, and more mafic composition. The Earth's outer laye ...
... Earth. The Mantle is made up of minerals rich in the elements iron, magnesium, silica, and oxygen. The Mantle makes up approximately ~85% of the Earth's volume. It is seperated from the crust by a sharp change to higher density and seismic velocity, and more mafic composition. The Earth's outer laye ...
Plate Tectonic Booklet (test make up)
... What layer of Earth has convection currents? What effect do convection currents have on Earth’s crust? Continental Drift List Alfred Wegener’s evidence for his Continental Drift Theory What is the name if the super-continent, how long ago was it? Convergent Boundaries (Subduction and Collisi ...
... What layer of Earth has convection currents? What effect do convection currents have on Earth’s crust? Continental Drift List Alfred Wegener’s evidence for his Continental Drift Theory What is the name if the super-continent, how long ago was it? Convergent Boundaries (Subduction and Collisi ...
Geología Norteamerica
... These data indicate the presence of three major oceanic plates: Pacific, Farallon and Kula with divergent boundaries among themselves that migrated towards and intersected the convergent boundaries of the North America plate at various times and places. ...
... These data indicate the presence of three major oceanic plates: Pacific, Farallon and Kula with divergent boundaries among themselves that migrated towards and intersected the convergent boundaries of the North America plate at various times and places. ...
Chapter 13
... - climate evidence Opposition - location? - why the split? - the continent moving force? ...
... - climate evidence Opposition - location? - why the split? - the continent moving force? ...
Plate tectonics
Plate tectonics (from the Late Latin tectonicus, from the Greek: τεκτονικός ""pertaining to building"") is a scientific theory that describes the large-scale motion of Earth's lithosphere. This theoretical model builds on the concept of continental drift which was developed during the first few decades of the 20th century. The geoscientific community accepted the theory after the concepts of seafloor spreading were later developed in the late 1950s and early 1960s.The lithosphere, which is the rigid outermost shell of a planet (on Earth, the crust and upper mantle), is broken up into tectonic plates. On Earth, there are seven or eight major plates (depending on how they are defined) and many minor plates. Where plates meet, their relative motion determines the type of boundary; convergent, divergent, or transform. Earthquakes, volcanic activity, mountain-building, and oceanic trench formation occur along these plate boundaries. The lateral relative movement of the plates typically varies from zero to 100 mm annually.Tectonic plates are composed of oceanic lithosphere and thicker continental lithosphere, each topped by its own kind of crust. Along convergent boundaries, subduction carries plates into the mantle; the material lost is roughly balanced by the formation of new (oceanic) crust along divergent margins by seafloor spreading. In this way, the total surface of the globe remains the same. This prediction of plate tectonics is also referred to as the conveyor belt principle. Earlier theories (that still have some supporters) propose gradual shrinking (contraction) or gradual expansion of the globe.Tectonic plates are able to move because the Earth's lithosphere has greater strength than the underlying asthenosphere. Lateral density variations in the mantle result in convection. Plate movement is thought to be driven by a combination of the motion of the seafloor away from the spreading ridge (due to variations in topography and density of the crust, which result in differences in gravitational forces) and drag, with downward suction, at the subduction zones. Another explanation lies in the different forces generated by the rotation of the globe and the tidal forces of the Sun and Moon. The relative importance of each of these factors and their relationship to each other is unclear, and still the subject of much debate.