Convergent plate boundary - Department of Geology UPRM
... Source: Photograph courtesy of W.B. Hamilton; courtesy USGS Photo Library, Denver, CO. ...
... Source: Photograph courtesy of W.B. Hamilton; courtesy USGS Photo Library, Denver, CO. ...
Slide 1
... Italian peninsula is almost parallel to the convergence direction between Africa and Eurasia. There is considerable earthquake activity along the Apennines BUT Earthquakes are concentrated beneath the mountains and descend to the depth of ~ 100 km. ...
... Italian peninsula is almost parallel to the convergence direction between Africa and Eurasia. There is considerable earthquake activity along the Apennines BUT Earthquakes are concentrated beneath the mountains and descend to the depth of ~ 100 km. ...
Document
... 8.9(A) describe the historical development of evidence that supports plate tectonic theory 8.9(B) relate plate tectonics to the formation of crustal features Today’s Objective: Identify the location of physical features that result from the movement of tectonic plates. ...
... 8.9(A) describe the historical development of evidence that supports plate tectonic theory 8.9(B) relate plate tectonics to the formation of crustal features Today’s Objective: Identify the location of physical features that result from the movement of tectonic plates. ...
Plate Tectonics
... denser crust of the oceanic plate sinks beneath the morebuoyant continental plate. In this type of convergence, trenches, strong, destructive earthquakes and the rapid uplift of mountain ranges are common The magma that results when the oceanic plate melts rises up through the continental crust and ...
... denser crust of the oceanic plate sinks beneath the morebuoyant continental plate. In this type of convergence, trenches, strong, destructive earthquakes and the rapid uplift of mountain ranges are common The magma that results when the oceanic plate melts rises up through the continental crust and ...
Chapter 2 Lecture Powerpoint Handout
... movement, and destruction processes of plates • Plate are fragments of lithosphere • Plates move in relation to others at varied rates • No major tectonic movements within plates • Actions concentrated along plate boundaries • Plate boundaries: plates come together. Defined by areas of concentrated ...
... movement, and destruction processes of plates • Plate are fragments of lithosphere • Plates move in relation to others at varied rates • No major tectonic movements within plates • Actions concentrated along plate boundaries • Plate boundaries: plates come together. Defined by areas of concentrated ...
plate_tectonics302b
... • major continental collisions in central Asia • Australian-SE Asian collisions ...
... • major continental collisions in central Asia • Australian-SE Asian collisions ...
Powerpoint Presentation Physical Geology, 10/e
... – Buildup of magma causes overlying lithosphere to uplift and fracture; fractured lithosphere is then pulled outward and downward by gravity, aided by convection in mantle – Asthenosphere melts and rises to fill fractures, creating new oceanic lithosphere – New oceanic lithosphere becomes colder and ...
... – Buildup of magma causes overlying lithosphere to uplift and fracture; fractured lithosphere is then pulled outward and downward by gravity, aided by convection in mantle – Asthenosphere melts and rises to fill fractures, creating new oceanic lithosphere – New oceanic lithosphere becomes colder and ...
Inside the Restless Earth
... 20. How do Volcanoes form? Volcanoes form at convergent boundaries when oceanic crust is subducted and forced down toward the mantle where it melts, becomes less dense, and rise back to toward the surface as magma, eventually erupting from a volcano. Volcanoes can also form along divergent boundarie ...
... 20. How do Volcanoes form? Volcanoes form at convergent boundaries when oceanic crust is subducted and forced down toward the mantle where it melts, becomes less dense, and rise back to toward the surface as magma, eventually erupting from a volcano. Volcanoes can also form along divergent boundarie ...
Ocean - cloudfront.net
... • Wegener reasoned that large geologic structures, such as mountain ranges would have fractured as the continents separated. • Using this reasoning, Wegener hypothesized that there should be areas of similar rock types on opposite sides of the Atlantic Ocean. • Similar groups of rocks were observed ...
... • Wegener reasoned that large geologic structures, such as mountain ranges would have fractured as the continents separated. • Using this reasoning, Wegener hypothesized that there should be areas of similar rock types on opposite sides of the Atlantic Ocean. • Similar groups of rocks were observed ...
1 - Tahoma
... Evidence for subduction lay in the model of the Benioff Zones that were defined by deep earthquakes. Most the Benioff Zones were known to be around the perimeter of the Pacific Ocean, at angles of approximately 45degrees to the surface. The zones were mapped as dipping away from the ocean floor and ...
... Evidence for subduction lay in the model of the Benioff Zones that were defined by deep earthquakes. Most the Benioff Zones were known to be around the perimeter of the Pacific Ocean, at angles of approximately 45degrees to the surface. The zones were mapped as dipping away from the ocean floor and ...
Intro to Plate Tectonics
... into each other. There are two kinds of surface features that are associated with a convergent boundary. The first is a deep ocean trench that forms a line of the two colliding plates. One plate made of oceanic crust can slide down underneath another plate, forming this narrow, deep trench. This hap ...
... into each other. There are two kinds of surface features that are associated with a convergent boundary. The first is a deep ocean trench that forms a line of the two colliding plates. One plate made of oceanic crust can slide down underneath another plate, forming this narrow, deep trench. This hap ...
Heat flow and flexure at subduction zones
... the incoming plate for incoming crust older than 25 Myr (Figure 3, Top). This analysis excludes data within 25 km of the trench axis to avoid complications such as perturbations by fluid expulsion near the toe of the subduction complex. Although there is variability, individual subduction zones seem ...
... the incoming plate for incoming crust older than 25 Myr (Figure 3, Top). This analysis excludes data within 25 km of the trench axis to avoid complications such as perturbations by fluid expulsion near the toe of the subduction complex. Although there is variability, individual subduction zones seem ...
Water Fluxing - Research at UVU
... 1. Hot mantle rock rises to fill the gap created by the diverging plates. At hot spots, mantle rock rises because it is hotter than surrounding rock, much the way wax rises in a lava lamp. 2. As the hot mantle rock rises, it feels less pressure (it decompresses), yet its temperature doesn't change m ...
... 1. Hot mantle rock rises to fill the gap created by the diverging plates. At hot spots, mantle rock rises because it is hotter than surrounding rock, much the way wax rises in a lava lamp. 2. As the hot mantle rock rises, it feels less pressure (it decompresses), yet its temperature doesn't change m ...
PT Answers
... (2) See if you can get them to guess what the wavier line from top to bottom might be after they’ve established the right two-thirds was under water at one time. The wavier line could be an ancient shoreline! (3) Divergent Boundary where the arrows are moving away from each other. Some of your stude ...
... (2) See if you can get them to guess what the wavier line from top to bottom might be after they’ve established the right two-thirds was under water at one time. The wavier line could be an ancient shoreline! (3) Divergent Boundary where the arrows are moving away from each other. Some of your stude ...
7-3 science notebook answers
... description or illustrate this type of plate interaction. Include arrows to show the direction of movement. Label the plates and the structures that result from the collisions. I found this on page ...
... description or illustrate this type of plate interaction. Include arrows to show the direction of movement. Label the plates and the structures that result from the collisions. I found this on page ...
Chapter 16. Island Arc Magmatism
... Figure 16-6. a. K2O-SiO2 diagram distinguishing high-K, medium-K and low-K series. Large squares = high-K, stars = med.-K, diamonds = low-K series from Table 16-2. Smaller symbols are identified in the caption. Differentiation within a series (presumably dominated by fractional crystallization) is ...
... Figure 16-6. a. K2O-SiO2 diagram distinguishing high-K, medium-K and low-K series. Large squares = high-K, stars = med.-K, diamonds = low-K series from Table 16-2. Smaller symbols are identified in the caption. Differentiation within a series (presumably dominated by fractional crystallization) is ...
Where are the major mountain ranges located?
... is pushed towards the South American plate, and because it is denser is subducted underneath. • The South American plate is less dense so sits on top of this subduction zone, but the rocks of the South American plate have been folded upwards and crumpled into fold mountains. ...
... is pushed towards the South American plate, and because it is denser is subducted underneath. • The South American plate is less dense so sits on top of this subduction zone, but the rocks of the South American plate have been folded upwards and crumpled into fold mountains. ...
Teacher Period _____ Date
... The main force that shapes our planet’s surface over long periods of time is the movement of Earth’s outer layer by the process of plate tectonics. The rigid outer layer of the Earth, called the lithosphere, is made of plates that fit together like a jigsaw puzzle. These plates are made of rock, but ...
... The main force that shapes our planet’s surface over long periods of time is the movement of Earth’s outer layer by the process of plate tectonics. The rigid outer layer of the Earth, called the lithosphere, is made of plates that fit together like a jigsaw puzzle. These plates are made of rock, but ...
Computer exercises in tectonics
... nucleus during the early Precambrian and has grown progressively by adding new material during various tectonic episodes. Thus, some geologists believe that the North American continent has grown with time. Episodes of mountain building (tectonism or orogeny) and volcanism are often related to the c ...
... nucleus during the early Precambrian and has grown progressively by adding new material during various tectonic episodes. Thus, some geologists believe that the North American continent has grown with time. Episodes of mountain building (tectonism or orogeny) and volcanism are often related to the c ...
File
... of four degrees. In the Pacific Ocean where mountainous coasts are common, the continental slope averages five degrees in contrast to the Atlantic and Indian Oceans where it averages three degrees. [NOTE: When airliners land, their final approach path is a glide slope of about 3.5˚] - Submarine cany ...
... of four degrees. In the Pacific Ocean where mountainous coasts are common, the continental slope averages five degrees in contrast to the Atlantic and Indian Oceans where it averages three degrees. [NOTE: When airliners land, their final approach path is a glide slope of about 3.5˚] - Submarine cany ...
Sea-Floor Spreading
... • The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle again is called subduction. • As subduction occurs, crust closer to a mid-ocean ridge moves away from the ridge and toward a deep-ocean trench. • Sea-floor spreading and subduction often work together. ...
... • The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle again is called subduction. • As subduction occurs, crust closer to a mid-ocean ridge moves away from the ridge and toward a deep-ocean trench. • Sea-floor spreading and subduction often work together. ...
pdf
... deeper water depths. Find the East Pacific Rift. Is this a ridge or a valley in the ocean? Does it ever exceed sea level? Read "Explanations" and determine what kind of plate boundary this rift is. ...
... deeper water depths. Find the East Pacific Rift. Is this a ridge or a valley in the ocean? Does it ever exceed sea level? Read "Explanations" and determine what kind of plate boundary this rift is. ...
Earth`s Movement - Book Units Teacher
... The factor that determines the type of eruption is the amount of silica that is in the lava. Silica is a very common mineral composed of silicon and oxygen (SiO2). Silicates makes up about 95% of the Earth’s crust. Volcanoes rarely change the type of eruption that occurs. ...
... The factor that determines the type of eruption is the amount of silica that is in the lava. Silica is a very common mineral composed of silicon and oxygen (SiO2). Silicates makes up about 95% of the Earth’s crust. Volcanoes rarely change the type of eruption that occurs. ...
Key Ideas and Quiz Yourself Questions The term bathymetry is
... slowly (i.e., slopes at an angle of 0.1°, or 1.7 meters per kilometer [9 feet per mile]). This flat, wide margin is found around every continent and is known as the continental shelf. The average width of a continental shelf is 70 kilometers (43 miles). Continental Slope and Rise The continental she ...
... slowly (i.e., slopes at an angle of 0.1°, or 1.7 meters per kilometer [9 feet per mile]). This flat, wide margin is found around every continent and is known as the continental shelf. The average width of a continental shelf is 70 kilometers (43 miles). Continental Slope and Rise The continental she ...
Oceanic trench
The oceanic trenches are hemispheric-scale long but narrow topographic depressions of the sea floor. They are also the deepest parts of the ocean floor. Oceanic trenches are a distinctive morphological feature of convergent plate boundaries, along which lithospheric plates move towards each other at rates that vary from a few mm to over ten cm per year. A trench marks the position at which the flexed, subducting slab begins to descend beneath another lithospheric slab. Trenches are generally parallel to a volcanic island arc, and about 200 km (120 mi) from a volcanic arc. Oceanic trenches typically extend 3 to 4 km (1.9 to 2.5 mi) below the level of the surrounding oceanic floor. The greatest ocean depth to be sounded is in the Challenger Deep of the Mariana Trench, at a depth of 11,034 m (36,201 ft) below sea level. Oceanic lithosphere moves into trenches at a global rate of about 3 km2/yr.