Chapter 4 Marine Sedimentation
... crust, which has an average composition of granite. Deep-ocean basin = the deep sea floor beyond the continental margin; made up of oceanic crust, which is composed mostly of volcanic basalt. ...
... crust, which has an average composition of granite. Deep-ocean basin = the deep sea floor beyond the continental margin; made up of oceanic crust, which is composed mostly of volcanic basalt. ...
A Tectonic explanation of the May 12, 2008, Sichuan Earthquake
... China’s largest, most destructive earthquakes occur here. ...
... China’s largest, most destructive earthquakes occur here. ...
Plate Tectonics
... together. They also have similar rock patterns and fossil records. These two pieces of evidence led me to believe that there was once a single land mass. This is my TECTONIC THEORY. ...
... together. They also have similar rock patterns and fossil records. These two pieces of evidence led me to believe that there was once a single land mass. This is my TECTONIC THEORY. ...
Resources of the Sea Floor
... and a mass approaching that of the ocean is assimilated into the underlying mantle (4). Where the seawater flows near upwelling magma at plate boundaries, it is heated, expands, and rises buoyantly, dissolving and transporting metals from the rocks and magmatic fluids. The metals react with seawater ...
... and a mass approaching that of the ocean is assimilated into the underlying mantle (4). Where the seawater flows near upwelling magma at plate boundaries, it is heated, expands, and rises buoyantly, dissolving and transporting metals from the rocks and magmatic fluids. The metals react with seawater ...
The Faults - Raleigh Charter High School
... Divergent Boundaries are where plates move away from each other. ...
... Divergent Boundaries are where plates move away from each other. ...
Sismos: Lo que la Tierra intenta decirnos
... Subduction Experiment Objective: Dynamic model of the subduction system under south-central Mexico ...
... Subduction Experiment Objective: Dynamic model of the subduction system under south-central Mexico ...
Plate boudaries II
... sediment recording fluvial environments (blue and yellow-green) overlain by km’s of sandy-shales representing continental ...
... sediment recording fluvial environments (blue and yellow-green) overlain by km’s of sandy-shales representing continental ...
The Plate Tectonic Model
... Oceanic/Continental divergent margins are rare, if they exist at all. There is probably no theoretical reason a rift could not initiate immediately beside a continent, though it should be easier to accumulate the necessary heat in the mantle beneath the continent, where the insulating ability of th ...
... Oceanic/Continental divergent margins are rare, if they exist at all. There is probably no theoretical reason a rift could not initiate immediately beside a continent, though it should be easier to accumulate the necessary heat in the mantle beneath the continent, where the insulating ability of th ...
Tectonic setting of Late Cretaceous gold and mercury
... Some of the tectonic factors operating during the critical ~70 Ma episode of widespread metallogenesis are known, but questions remain. Subduction was most certainly occurring along the Gulf of Alaska margin at this time, based on the presence of the Chugach accretionary complex and subduction-relat ...
... Some of the tectonic factors operating during the critical ~70 Ma episode of widespread metallogenesis are known, but questions remain. Subduction was most certainly occurring along the Gulf of Alaska margin at this time, based on the presence of the Chugach accretionary complex and subduction-relat ...
Oceanography 101 Linda Khandro, MAT Homework 11: Dynamic
... The basalt columns of Giants Causeway in the northeast are the result of rifting about 65 million years ago; they are also found across the sea to the southwest of Scotland. The climate is kept mild by the influence of the Gulf Stream ocean current, bringing warmer water from the tropics. ...
... The basalt columns of Giants Causeway in the northeast are the result of rifting about 65 million years ago; they are also found across the sea to the southwest of Scotland. The climate is kept mild by the influence of the Gulf Stream ocean current, bringing warmer water from the tropics. ...
Powerpoint
... Not clear if it follows the western boundary of extension, it appears to do that in Owens Valley but is further east to the north and again further west at its northernmost extent. ...
... Not clear if it follows the western boundary of extension, it appears to do that in Owens Valley but is further east to the north and again further west at its northernmost extent. ...
Basin processes
... magmatic intrusion into the crust in the form of sill like structures in the lowest crust in the presently active Kenya and Baikal rift zones and the DonBas palaeo-rift zone in Ukraine. This result is surprising as the Kenya Rift is usually considered “wet” due to large amounts of volcanic products ...
... magmatic intrusion into the crust in the form of sill like structures in the lowest crust in the presently active Kenya and Baikal rift zones and the DonBas palaeo-rift zone in Ukraine. This result is surprising as the Kenya Rift is usually considered “wet” due to large amounts of volcanic products ...
Unit Three Review Guide: Plate Tectonics
... Long Answer Each response should have at least 2-3 sentences MINIMUM. The more detailed your answer, the better you will do on the test. Lesson 1 Review 1. What was Pangaea? Where is it now? 2. Describe Wegner’s theory of continental drift. 3. Explain how each of the following items helps explain an ...
... Long Answer Each response should have at least 2-3 sentences MINIMUM. The more detailed your answer, the better you will do on the test. Lesson 1 Review 1. What was Pangaea? Where is it now? 2. Describe Wegner’s theory of continental drift. 3. Explain how each of the following items helps explain an ...
Passive continental margins
... • Located primarily around the Pacific Ocean • Accumulations of deformed sediment and scraps of ocean crust form accretionary wedges • Some subduction zones have little or no accumulation of sediments (narrow beaches) ...
... • Located primarily around the Pacific Ocean • Accumulations of deformed sediment and scraps of ocean crust form accretionary wedges • Some subduction zones have little or no accumulation of sediments (narrow beaches) ...
METAMORPHISM & METAMORPHIC ROCKS
... • Evidence for composition of the oceanic crust • Ophiolite (from top to bottom) – Marine sedimentary rock – Pillow basalt – Sheeted dike complex ...
... • Evidence for composition of the oceanic crust • Ophiolite (from top to bottom) – Marine sedimentary rock – Pillow basalt – Sheeted dike complex ...
The New Zealand convergent tectonics system has
... promote failure5. Any relation between growth of MLB faulting southward since Pliocene time and the earthquake potential of the North Canterbury region could be clarified if major crustal weaknesses can be mapped. The NZ SI is ideal for testing these parameters due to the compositional uniformity of ...
... promote failure5. Any relation between growth of MLB faulting southward since Pliocene time and the earthquake potential of the North Canterbury region could be clarified if major crustal weaknesses can be mapped. The NZ SI is ideal for testing these parameters due to the compositional uniformity of ...
Powerpoint Presentation Physical Geology, 10/e
... • Passive continental margins have a continental shelf, continental slope, and continental rise descending to the abyssal plain • Active continental margins have continental shelves and slopes, but the slope extends down into a deep oceanic trench • A mid-oceanic ridge system encircles the globe, ty ...
... • Passive continental margins have a continental shelf, continental slope, and continental rise descending to the abyssal plain • Active continental margins have continental shelves and slopes, but the slope extends down into a deep oceanic trench • A mid-oceanic ridge system encircles the globe, ty ...
Trace element patterns show that Guatemala rocks
... wedge margin. Lithium abundances and isotopes have been measured on these rocks using MC-ICP-MS, to better understand the evolution of fluids and fluid exchange during subduction. Several lines of evidence suggest that the rocks were metasomatized in the subduction zone environment. Although the ec ...
... wedge margin. Lithium abundances and isotopes have been measured on these rocks using MC-ICP-MS, to better understand the evolution of fluids and fluid exchange during subduction. Several lines of evidence suggest that the rocks were metasomatized in the subduction zone environment. Although the ec ...
8. Intro to Oceanography and Seafloor
... did not have a viable mechanical explanation as to how continents would "drift" ...
... did not have a viable mechanical explanation as to how continents would "drift" ...
Post-rifting Processes
... rifting recorded in the South Georgia basin onshore, effusive breakup magmatism beneath the Carolina trough offshore, two zones of known seismicity (Charleston and Eastern Tennessee), large landslides preserved on the slope extensive Blake Ridge gas hydrate province. Addresses all 4 scie ...
... rifting recorded in the South Georgia basin onshore, effusive breakup magmatism beneath the Carolina trough offshore, two zones of known seismicity (Charleston and Eastern Tennessee), large landslides preserved on the slope extensive Blake Ridge gas hydrate province. Addresses all 4 scie ...
Magma Type and Plate Margins
... Lavas: Mainly andesites. Pyroclastic deposits: Ash Pyroclastic flow deposit Large blocks close to the vent ...
... Lavas: Mainly andesites. Pyroclastic deposits: Ash Pyroclastic flow deposit Large blocks close to the vent ...
NEW ZEALAND ROCkS AND LANDFORMS
... Gondwana margin. During this period of mountain building (orogeny) the eastern parts of New Zealand were created by the uplift of thick marine sediments. The orogeny was followed by a long period of tectonic quiescence, which lasted until 40-30 Ma. During this long period of erosion and subsidence t ...
... Gondwana margin. During this period of mountain building (orogeny) the eastern parts of New Zealand were created by the uplift of thick marine sediments. The orogeny was followed by a long period of tectonic quiescence, which lasted until 40-30 Ma. During this long period of erosion and subsidence t ...
Plate Tectonics Web Activity
... Geologists have known for over a century that a ridge exists in the middle of the Atlantic Ocean. The MidAtlantic Ridge is 6,500 feet (2,000 m) above the adjacent sea floor, which is at a depth of about 20,000 feet (6,000 m) below sea level. In the 1950s, a seismologist, a scientist who specializes ...
... Geologists have known for over a century that a ridge exists in the middle of the Atlantic Ocean. The MidAtlantic Ridge is 6,500 feet (2,000 m) above the adjacent sea floor, which is at a depth of about 20,000 feet (6,000 m) below sea level. In the 1950s, a seismologist, a scientist who specializes ...
