Convergent Boundaries
... subducts under the Philippine Plate, the Pacific Plate is pulled down to form the Mariana Trench. The leading edge of the overriding Philippine Plate is marked by a chain of volcanic islands, the Mariana Islands. When an oceanic plate converges with a continental plate, the denser oceanic plate subd ...
... subducts under the Philippine Plate, the Pacific Plate is pulled down to form the Mariana Trench. The leading edge of the overriding Philippine Plate is marked by a chain of volcanic islands, the Mariana Islands. When an oceanic plate converges with a continental plate, the denser oceanic plate subd ...
Earthquake – violent shaking of the ground
... continental crust – granitic, less dense, thicker oceanic crust – basaltic, more dense, thinner Moho – interface between more dense and less dense mantle and crust mantle – layer below crust that plates move across, where convection occurs meteorite – same composition as the inner core of the Earth ...
... continental crust – granitic, less dense, thicker oceanic crust – basaltic, more dense, thinner Moho – interface between more dense and less dense mantle and crust mantle – layer below crust that plates move across, where convection occurs meteorite – same composition as the inner core of the Earth ...
The Plate Tectonic Model
... margin its future would be exactly the same as if it originated within the continent – it would rapidly evolve into a ridge by creating new basaltic crust on either side. ...
... margin its future would be exactly the same as if it originated within the continent – it would rapidly evolve into a ridge by creating new basaltic crust on either side. ...
Answers to the Study Guide!
... compared to the rocks further away from the ridge. Magnetic strips in the sea-floor run parallel to the ridge on both sides, showing they were created at the same time but have moved away from each other. Where does sea floor spreading take place? (other than the sea floor ) At the mid-ocean ridge, ...
... compared to the rocks further away from the ridge. Magnetic strips in the sea-floor run parallel to the ridge on both sides, showing they were created at the same time but have moved away from each other. Where does sea floor spreading take place? (other than the sea floor ) At the mid-ocean ridge, ...
"Seafloor Spreading" Lab
... which is further evidence for plate tectonics. This evidence shows that new seafloor has been forming for millions of years at mid-ocean ridges throughout the oceans. Magma melted within the crust rises to the seafloor, cools and solidifies into new rock. In some places this new seafloor is pulled a ...
... which is further evidence for plate tectonics. This evidence shows that new seafloor has been forming for millions of years at mid-ocean ridges throughout the oceans. Magma melted within the crust rises to the seafloor, cools and solidifies into new rock. In some places this new seafloor is pulled a ...
Data/hora: 29/03/2017 13:30:32 Provedor de dados: 5 País: France
... a velocity of 4.5 km s(-1). This layer can be correlated to a well about 100 km to the west of the line, where Palaeocene basalts and interbedded sediments were drilled. Underneath is a 12-km-thick crust with a 2-km-thick upper layer (5.8-6.6 km s(-1)) and a 10-km-thick lower layer (6.8-7.2 km s(-1) ...
... a velocity of 4.5 km s(-1). This layer can be correlated to a well about 100 km to the west of the line, where Palaeocene basalts and interbedded sediments were drilled. Underneath is a 12-km-thick crust with a 2-km-thick upper layer (5.8-6.6 km s(-1)) and a 10-km-thick lower layer (6.8-7.2 km s(-1) ...
049539193X_177844
... 1. A shark and a seaweed are certainly superficially dissimilar, but the physical and biochemical organization of the cells that comprise both is startling in its similarity. On the molecular level, there are few differences. 2. An atom of iron is an atom of iron wherever it is found. There are no d ...
... 1. A shark and a seaweed are certainly superficially dissimilar, but the physical and biochemical organization of the cells that comprise both is startling in its similarity. On the molecular level, there are few differences. 2. An atom of iron is an atom of iron wherever it is found. There are no d ...
Table 7.1. Worksheet for Modeling Earth’s Dimensions Activity
... Table 7.1. Worksheet for Modeling Earth’s Dimensions Activity Average Actual layer Actual radius from Radius on diagram density of thickness center of Earth to top from the center to the Layer of the each layer (km) of layer (km) top of the layer (mm) Earth (g/cm3) (C) (D) (A) (B) Inner core ...
... Table 7.1. Worksheet for Modeling Earth’s Dimensions Activity Average Actual layer Actual radius from Radius on diagram density of thickness center of Earth to top from the center to the Layer of the each layer (km) of layer (km) top of the layer (mm) Earth (g/cm3) (C) (D) (A) (B) Inner core ...
Inner-Space Speciation Project
... Why Explore the Deep Sea? • The deep ocean is the largest living space on Earth • It’s properties are radically different from shallow ocean environments • Some of the oldest life forms live in the deep sea • Less than 1% of its volume has been explored • There is a high probability of discovering ...
... Why Explore the Deep Sea? • The deep ocean is the largest living space on Earth • It’s properties are radically different from shallow ocean environments • Some of the oldest life forms live in the deep sea • Less than 1% of its volume has been explored • There is a high probability of discovering ...
Wilson Cycle Tectonics: East Greenland-Norway closure and
... oblique collision and deep subduction of Baltican crust beneath Laurentia. The Iapetus Suture ran through the UK, probably beneath the transition between the platform/inner parts of the Vøring Basin, and continued into the Barents Sea Region and then into the High Arctic. Since the Late Palaeozoic, ...
... oblique collision and deep subduction of Baltican crust beneath Laurentia. The Iapetus Suture ran through the UK, probably beneath the transition between the platform/inner parts of the Vøring Basin, and continued into the Barents Sea Region and then into the High Arctic. Since the Late Palaeozoic, ...
The Dynamic Earth – Plate Tectonics
... Atlantic Ocean Sea Floor It was discovered that the youngest rocks of the Atlantic Ocean seafloor are found along the mid-oceanic ...
... Atlantic Ocean Sea Floor It was discovered that the youngest rocks of the Atlantic Ocean seafloor are found along the mid-oceanic ...
File
... • Home to many small species of fish and plant life. • This area is covered by water during high tide and uncovered at low tide. • Many types of seaweeds live here, along with clams, crabs, mussels, and star fish. ...
... • Home to many small species of fish and plant life. • This area is covered by water during high tide and uncovered at low tide. • Many types of seaweeds live here, along with clams, crabs, mussels, and star fish. ...
Continental Drift
... that Wegener used to refer to the one large landmass that he believed existed before it broke apart into continents. ...
... that Wegener used to refer to the one large landmass that he believed existed before it broke apart into continents. ...
The Origin of Ocean Basins
... – Indian plate reaches equator after separation from Australia and Antarctica – North and South Atlantic continue to widen ~40 million years ago – onset of Indian and Asian plate collision, initial formation of the Himalayas – North and South Atlantic achieve modern appearance ...
... – Indian plate reaches equator after separation from Australia and Antarctica – North and South Atlantic continue to widen ~40 million years ago – onset of Indian and Asian plate collision, initial formation of the Himalayas – North and South Atlantic achieve modern appearance ...
Evolution of Australian Biota
... -There are three similar lung fish found in Australia, South America and Africa. ...
... -There are three similar lung fish found in Australia, South America and Africa. ...
The Origin of Ocean Basins
... ridge and is more deeply buried by sediment because sediments have had a longer time to collect. • Rates of sea-floor spreading vary from 1 to 10 cm per year for each side of the ridge and can be determined by dating the sea floor and measuring its distance from the ridge crest. • Continents are mov ...
... ridge and is more deeply buried by sediment because sediments have had a longer time to collect. • Rates of sea-floor spreading vary from 1 to 10 cm per year for each side of the ridge and can be determined by dating the sea floor and measuring its distance from the ridge crest. • Continents are mov ...
The last frontier on Earth - Centre for International Law
... The mine site that OMS applied for was originally half of a larger mine site that UKSRL had applied for. Under the convention, UKSRL was obliged to give up half the mine site to the ISA as a "reserved area" for the benefit of developing countries. As a developing country, Singapore is therefore enti ...
... The mine site that OMS applied for was originally half of a larger mine site that UKSRL had applied for. Under the convention, UKSRL was obliged to give up half the mine site to the ISA as a "reserved area" for the benefit of developing countries. As a developing country, Singapore is therefore enti ...
Plate Tectonics
... Wegener theory, called continental drift, explained why identical animal fossils like that of mesorausaus were found on coastlines separated by vast oceans. The continental drift theory could also explain the matching of large geological features across continents. Sea floor spreading in turn was th ...
... Wegener theory, called continental drift, explained why identical animal fossils like that of mesorausaus were found on coastlines separated by vast oceans. The continental drift theory could also explain the matching of large geological features across continents. Sea floor spreading in turn was th ...
Development of the Theory of Plate Tectonics
... Seafloor spreading and recycling of oceanic crust The discovery of magnetic striping naturally prompted more questions: How does the magnetic striping pattern form? And why are the stripes symmetrical around the crests of the mid-ocean ridges? These questions could not be answered without also knowi ...
... Seafloor spreading and recycling of oceanic crust The discovery of magnetic striping naturally prompted more questions: How does the magnetic striping pattern form? And why are the stripes symmetrical around the crests of the mid-ocean ridges? These questions could not be answered without also knowi ...
PlateTectonicsJeopardy 2013_2014
... Oceanic crust is consumed and returns to the Earth’s mantle during this process at some convergent plate boundaries. ...
... Oceanic crust is consumed and returns to the Earth’s mantle during this process at some convergent plate boundaries. ...
History of the Earth Chapter 2: The Hadean
... Basic Plate Tectonics • Earth’s “surface” (lithosphere) is broken into plates • Plates move on asthenosphere • “Geology happens” where the plates interact with one another ...
... Basic Plate Tectonics • Earth’s “surface” (lithosphere) is broken into plates • Plates move on asthenosphere • “Geology happens” where the plates interact with one another ...
Rocks-Water-Microbe Interactions
... exchange, the magnitude of the deep biosphere, and its role in carbon cycling and storage in the crust. It is also likely that studied in this area will reveal fundamental information about current and ancient microbial life on Earth and its potential discovery on other planets. We will carry out de ...
... exchange, the magnitude of the deep biosphere, and its role in carbon cycling and storage in the crust. It is also likely that studied in this area will reveal fundamental information about current and ancient microbial life on Earth and its potential discovery on other planets. We will carry out de ...
Volcano Types KEY
... crust that allows magma to rise up through to become a volcano. Seafloor spreading at midocean ridges is an another example. ...
... crust that allows magma to rise up through to become a volcano. Seafloor spreading at midocean ridges is an another example. ...
Abyssal plain
An abyssal plain is an underwater plain on the deep ocean floor, usually found at depths between 3000 and 6000 m. Lying generally between the foot of a continental rise and a mid-ocean ridge, abyssal plains cover more than 50% of the Earth’s surface. They are among the flattest, smoothest and least explored regions on Earth. Abyssal plains are key geologic elements of oceanic basins (the other elements being an elevated mid-ocean ridge and flanking abyssal hills). In addition to these elements, active oceanic basins (those that are associated with a moving plate tectonic boundary) also typically include an oceanic trench and a subduction zone.Abyssal plains were not recognized as distinct physiographic features of the sea floor until the late 1940s and, until very recently, none had been studied on a systematic basis. They are poorly preserved in the sedimentary record, because they tend to be consumed by the subduction process. The creation of the abyssal plain is the end result of spreading of the seafloor (plate tectonics) and melting of the lower oceanic crust. Magma rises from above the asthenosphere (a layer of the upper mantle) and as this basaltic material reaches the surface at mid-ocean ridges it forms new oceanic crust. This is constantly pulled sideways by spreading of the seafloor. Abyssal plains result from the blanketing of an originally uneven surface of oceanic crust by fine-grained sediments, mainly clay and silt. Much of this sediment is deposited by turbidity currents that have been channelled from the continental margins along submarine canyons down into deeper water. The remainder of the sediment is composed chiefly of pelagic sediments. Metallic nodules are common in some areas of the plains, with varying concentrations of metals, including manganese, iron, nickel, cobalt, and copper. These nodules may provide a significant resource for future mining ventures.Owing in part to their vast size, abyssal plains are currently believed to be a major reservoir of biodiversity. The abyss also exerts significant influence upon ocean carbon cycling, dissolution of calcium carbonate, and atmospheric CO2 concentrations over timescales of 100–1000 years. The structure and function of abyssal ecosystems are strongly influenced by the rate of flux of food to the seafloor and the composition of the material that settles. Factors such as climate change, fishing practices, and ocean fertilization are expected to have a substantial effect on patterns of primary production in the euphotic zone. This will undoubtedly impact the flux of organic material to the abyss in a similar manner and thus have a profound effect on the structure, function and diversity of abyssal ecosystems.