To get a better understanding of this whole process, I would like you
... 2. Explain the significance of paleomagnetic banding. Paleomagnetic banding shows that at one point, older rock further from the ridge had been formed at the divergent boundary- only way to explain the zebra like banding of alternating magnetic orientation of the sea floor. 3. Explain the process of ...
... 2. Explain the significance of paleomagnetic banding. Paleomagnetic banding shows that at one point, older rock further from the ridge had been formed at the divergent boundary- only way to explain the zebra like banding of alternating magnetic orientation of the sea floor. 3. Explain the process of ...
Regarding an Oceanic Crust/Upper Mantle Geochemical Signature
... The third hypothesis is elaborated here since: 1) Ophiolites nearest to Chicxulub crater are found in Cuba and apparently were obducted in latest Cretaceous/earliest Danian times (García-Casco, 2008), inconsistent with the documented Eocene collision of Cuba with the Bahamas platform; and 2) Cuba ho ...
... The third hypothesis is elaborated here since: 1) Ophiolites nearest to Chicxulub crater are found in Cuba and apparently were obducted in latest Cretaceous/earliest Danian times (García-Casco, 2008), inconsistent with the documented Eocene collision of Cuba with the Bahamas platform; and 2) Cuba ho ...
Plate Tectonics 1
... 2) Similar fossils on each continent 3) Rocks matched (age and composition) 4) Glacial evidence – striations (scratches in rocks matched) + deposits 5) Climate evidence – due to types of fossils found, coal deposits… continents have been in different locations on Earth’s surface ...
... 2) Similar fossils on each continent 3) Rocks matched (age and composition) 4) Glacial evidence – striations (scratches in rocks matched) + deposits 5) Climate evidence – due to types of fossils found, coal deposits… continents have been in different locations on Earth’s surface ...
reading and synthesizing
... ~15 plates move at the surface of the earth. Plate boundaries: locus of seismicity +/- magmatic activities, and high topography. Divergent, convergent, and transform plate boundaries. Lithospheric plates: oceanic lithosphere only, or both oceanic and continental lithosphere, they float on the asthen ...
... ~15 plates move at the surface of the earth. Plate boundaries: locus of seismicity +/- magmatic activities, and high topography. Divergent, convergent, and transform plate boundaries. Lithospheric plates: oceanic lithosphere only, or both oceanic and continental lithosphere, they float on the asthen ...
Oceanography—Plate Tectonics Name
... and it remained dormant until years later, when fossil evidence and seafloor maps became more detailed. Interestingly, fossils from now-distant continents matched, and provided evidence that they had once been linked. The next major idea proposed was that of seafloor spreading. This concept—based on ...
... and it remained dormant until years later, when fossil evidence and seafloor maps became more detailed. Interestingly, fossils from now-distant continents matched, and provided evidence that they had once been linked. The next major idea proposed was that of seafloor spreading. This concept—based on ...
Plain
... Mountains, plains, and plateaus are the main continental landforms. A landform is a physical feature of the earth's surface. ...
... Mountains, plains, and plateaus are the main continental landforms. A landform is a physical feature of the earth's surface. ...
Plate Tectonics
... * _____________ ridges are continuous elevated zones on the floor of all major ocean basins. The rifts at the crest of ridges represent divergent plate boundaries. * ________ valleys are deep faulted structures found along the axes of divergent plate boundaries. They can develop on the seafloor or o ...
... * _____________ ridges are continuous elevated zones on the floor of all major ocean basins. The rifts at the crest of ridges represent divergent plate boundaries. * ________ valleys are deep faulted structures found along the axes of divergent plate boundaries. They can develop on the seafloor or o ...
TennMaps_PlateTectonics
... It was discovered that the youngest rocks of the Atlantic Ocean seafloor are found along the mid-oceanic ridge And that farther you move away from the ridge, the older the rocks become on either side of the ridge The oldest rocks are along the continental boundaries ...
... It was discovered that the youngest rocks of the Atlantic Ocean seafloor are found along the mid-oceanic ridge And that farther you move away from the ridge, the older the rocks become on either side of the ridge The oldest rocks are along the continental boundaries ...
5A_Plate Tectonics Lecture
... When two oceanic plates converge, one descends beneath the other initiating volcanic activity (similar to the oceanic - continental case), but the volcanoes form on the ocean floor rather than on continents. ...
... When two oceanic plates converge, one descends beneath the other initiating volcanic activity (similar to the oceanic - continental case), but the volcanoes form on the ocean floor rather than on continents. ...
Unit 1 Powerpoint
... characteristics of the core, mantle, asthenosphere difference between oceanic & continental crust convection currents seismic waves data as evidence plate tectonics & major plates types of plate boundaries seafloor spreading post-Pangaea plate movement evidence ...
... characteristics of the core, mantle, asthenosphere difference between oceanic & continental crust convection currents seismic waves data as evidence plate tectonics & major plates types of plate boundaries seafloor spreading post-Pangaea plate movement evidence ...
Ocean Floor Answers
... Construct a small foldable that demonstrates the ocean floor by folding a piece of plain paper in half using the hot dog fold. Using a combination of information found in your notes and in the other graphics of the ocean floor in the graphics review section, draw the ocean floor. Your drawing on ...
... Construct a small foldable that demonstrates the ocean floor by folding a piece of plain paper in half using the hot dog fold. Using a combination of information found in your notes and in the other graphics of the ocean floor in the graphics review section, draw the ocean floor. Your drawing on ...
Indicate the answer choice that best completes the statement or
... b. Strike-slip faults c. Mountain ranges d. Rift valleys 12. The existence of coal beds in Antarctica indicates that the continent once had ____. a. been part of Africa b. a temperate, rainy climate c. a cold, dry climate d. been farther from the equator 13. The hypothesis that contine ...
... b. Strike-slip faults c. Mountain ranges d. Rift valleys 12. The existence of coal beds in Antarctica indicates that the continent once had ____. a. been part of Africa b. a temperate, rainy climate c. a cold, dry climate d. been farther from the equator 13. The hypothesis that contine ...
![Structure of Earth notes part 2 [Compatibility Mode]](http://s1.studyres.com/store/data/016249846_1-b55a4dc67cd5eaca487cb0e59fb7e496-300x300.png)
Structure of Earth notes part 2 [Compatibility Mode]
... • At divergent plate boundaries, two lithospheric plates move apart and new plate (and crust) are created at the boundary. • The new crust is created through volvanic activity. • This process ALWAYS PRODUCES OCEAN CRUST, and thus oceanic plate. • Thus divergent boundaries ultimately become mid-ocean ...
... • At divergent plate boundaries, two lithospheric plates move apart and new plate (and crust) are created at the boundary. • The new crust is created through volvanic activity. • This process ALWAYS PRODUCES OCEAN CRUST, and thus oceanic plate. • Thus divergent boundaries ultimately become mid-ocean ...
Explain the relationship between igneous activity, magmatic
... Explain the relationship between igneous activity, magmatic composition, rock types and plate boundaries. ...
... Explain the relationship between igneous activity, magmatic composition, rock types and plate boundaries. ...
Document
... Wegener believed that all the continents were at one time joined together approximately 200 million years ago. ...
... Wegener believed that all the continents were at one time joined together approximately 200 million years ago. ...
Chapter 20 Study Notes Ocean Water
... • Ocean water ________ depends on the solar energy an area receives and the water’s ________________. – temperature – movement. ...
... • Ocean water ________ depends on the solar energy an area receives and the water’s ________________. – temperature – movement. ...
Midlittoral Zone Mid-Ocean Ridge
... seafloor and intrusion of magma at depth within the oceanic crust and upper mantle) and tectonic (i.e., faulting, thrusting, and rifting of the solid portions of the outer layer of Earth) processes. Although rarely explosive or exposed above sea level (Iceland is an exception), they are the most vol ...
... seafloor and intrusion of magma at depth within the oceanic crust and upper mantle) and tectonic (i.e., faulting, thrusting, and rifting of the solid portions of the outer layer of Earth) processes. Although rarely explosive or exposed above sea level (Iceland is an exception), they are the most vol ...
Plate Tectonics and Global Impacts – Tutorial Script - FOG
... Now let’s look at satellite images of Eastern Africa. Notice the rift valley atop a chain of active volcanoes that includes Mount Kilimanjaro? If we follow this chain north, it joins with a seafloor spreading ridge that runs across the center of the Red Sea and another that runs along the center of ...
... Now let’s look at satellite images of Eastern Africa. Notice the rift valley atop a chain of active volcanoes that includes Mount Kilimanjaro? If we follow this chain north, it joins with a seafloor spreading ridge that runs across the center of the Red Sea and another that runs along the center of ...
Activity Title: Introduction to Ocean Zones
... (continental shelf, slope, rise and abyssal plain). 3. Group 3: work at the top of the diagram, drawing the surface of the ocean and structures found at the surface (like a coral reef, a ship, a sailboat). 4. Group 4: work on the bottom of the diagram, drawing a seamount, trench, hydrothermal vents ...
... (continental shelf, slope, rise and abyssal plain). 3. Group 3: work at the top of the diagram, drawing the surface of the ocean and structures found at the surface (like a coral reef, a ship, a sailboat). 4. Group 4: work on the bottom of the diagram, drawing a seamount, trench, hydrothermal vents ...
Slide 1
... SEA FLOOR SPREADING • In 1962, a geologist presented an explanation for the global rift system. Harry Hess proposed that new ocean floor is formed at the rift of midocean ridges. • The ocean floor, and the rock beneath it, are produced by magma that rises from deeper levels. Hess suggested that th ...
... SEA FLOOR SPREADING • In 1962, a geologist presented an explanation for the global rift system. Harry Hess proposed that new ocean floor is formed at the rift of midocean ridges. • The ocean floor, and the rock beneath it, are produced by magma that rises from deeper levels. Hess suggested that th ...
Divergent Plate Boundaries
... backbones of great mountain ranges such as the Sierra Nevada form by this process. ...
... backbones of great mountain ranges such as the Sierra Nevada form by this process. ...
Puerto-Rico Trench
... • Earthquakes are concentrated into areas called “earthquake zones” and most of these zones form bands or lines. • Scientists came to realize that these bands represent divisions in the lithosphere and separate it into pieces (plates). ...
... • Earthquakes are concentrated into areas called “earthquake zones” and most of these zones form bands or lines. • Scientists came to realize that these bands represent divisions in the lithosphere and separate it into pieces (plates). ...
Our Planet
... Hypothesis of Sea-Floor Spreading Introduction: In 1960, improved techniques had enabled scientists to examine the detailed topography of large areas of ocean floors. They were revealed ‘mountain ranges’. These ranges were not isolated but formed part of a world-wide continuous network. They were s ...
... Hypothesis of Sea-Floor Spreading Introduction: In 1960, improved techniques had enabled scientists to examine the detailed topography of large areas of ocean floors. They were revealed ‘mountain ranges’. These ranges were not isolated but formed part of a world-wide continuous network. They were s ...
Mr. Perfect UNDER THE SEA
... The salinity is lower in areas where freshwater rivers run into the ocean. Salinity levels are also affected by animals such as clams and oysters that use calcium salts to build their shells. They remove salt from the water. In warm ocean areas where there is little rainfall and much evaporation, th ...
... The salinity is lower in areas where freshwater rivers run into the ocean. Salinity levels are also affected by animals such as clams and oysters that use calcium salts to build their shells. They remove salt from the water. In warm ocean areas where there is little rainfall and much evaporation, th ...
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.