Mechanisms of Plate Motion
... Mantle Plumes – hot plumes of rock that are attributed to the upward flowing arms of mantle convection Mantle plumes sometimes show themselves on the surface as hot spots and volcanoes Whole-mantle convection is when slabs of cold oceanic lithosphere descend into the lower mantle, at the same time, ...
... Mantle Plumes – hot plumes of rock that are attributed to the upward flowing arms of mantle convection Mantle plumes sometimes show themselves on the surface as hot spots and volcanoes Whole-mantle convection is when slabs of cold oceanic lithosphere descend into the lower mantle, at the same time, ...
Answers to STUDY BREAK Questions Essentials 5th Chapter 4
... 16. What are fracture zones? What causes these lateral breaks? Fracture zones extend outward from the ridge axis. They are seismically inactive areas that show evidence of past transform fault activity. While segments of a lithospheric plate on either side of a transform fault move in opposite direc ...
... 16. What are fracture zones? What causes these lateral breaks? Fracture zones extend outward from the ridge axis. They are seismically inactive areas that show evidence of past transform fault activity. While segments of a lithospheric plate on either side of a transform fault move in opposite direc ...
Faults and Landforms PowerPoint
... This is cyclical in nature, as seen by this water into the Pacific through rainfall. As a result, graphic representation of global the Atlantic is saltier than the Pacific temperatures through geologic time Sea level is generally lower during the time of supercontinents, and higher when they break a ...
... This is cyclical in nature, as seen by this water into the Pacific through rainfall. As a result, graphic representation of global the Atlantic is saltier than the Pacific temperatures through geologic time Sea level is generally lower during the time of supercontinents, and higher when they break a ...
Earth Science EOG Review
... A.Earth’s climate is constantly changing B.The continents of Earth are continually moving ...
... A.Earth’s climate is constantly changing B.The continents of Earth are continually moving ...
The theory of Plate Tectonics Plate Boundaries
... collide. The thin, denser oceanic plate collides with the less dense, thick continental plate. The oceanic plate is forced under the continental plate into the mantle where it melts. That melted plate rises up to create a volcanic arc on the continental crust. The continental crust is ...
... collide. The thin, denser oceanic plate collides with the less dense, thick continental plate. The oceanic plate is forced under the continental plate into the mantle where it melts. That melted plate rises up to create a volcanic arc on the continental crust. The continental crust is ...
Seafloor Spreading and Plate Tectonics
... parts of mobile belts. • Older now stable parts (cratons) appear to have accreted as terranes in the more distant past. ...
... parts of mobile belts. • Older now stable parts (cratons) appear to have accreted as terranes in the more distant past. ...
continental-drift
... locations of volcanic islands and seamounts that erupted on the seafloor of the Pacific Plate as it moved northwest over a stationary mantle hotspot beneath the lithosphere. The hotspot is currently under Kilauea. Island size is not drawn to scale. Locations X, Y and Z are on Earth's surface. ...
... locations of volcanic islands and seamounts that erupted on the seafloor of the Pacific Plate as it moved northwest over a stationary mantle hotspot beneath the lithosphere. The hotspot is currently under Kilauea. Island size is not drawn to scale. Locations X, Y and Z are on Earth's surface. ...
lecture notes
... phytoplankton In the fall, productivity initially increases as the water becomes isothermal and nutrients again become abundant, but then declimes because the amount of sunlight decreases o Polar waters are nutrient rich all year but productivity is only high in the summer when light is abundant. ...
... phytoplankton In the fall, productivity initially increases as the water becomes isothermal and nutrients again become abundant, but then declimes because the amount of sunlight decreases o Polar waters are nutrient rich all year but productivity is only high in the summer when light is abundant. ...
Chapter 13 - COSEE Florida
... - Use some of that for their own energy source for life - Rest moves it’s way up the food chain ...
... - Use some of that for their own energy source for life - Rest moves it’s way up the food chain ...
Dynamic Ocean Floor
... continents, including matching geological trends between the eastern coast of South America and the western coast of Africa. • The continuity of mountain chains also provide evidence for Pangea. • One example of this is the Appalachian Mountains chain which extends from the United States to Ireland, ...
... continents, including matching geological trends between the eastern coast of South America and the western coast of Africa. • The continuity of mountain chains also provide evidence for Pangea. • One example of this is the Appalachian Mountains chain which extends from the United States to Ireland, ...
Oceanography Lecture 16
... Nutrient over-enrichment from anthropogenic sources is one of the major stresses impacting coastal ecosystems. Generally, excess nutrients lead to eutrophic conditions and increased algal production which in turn increases the availability of organic carbon within the aquatic ecosystem. ...
... Nutrient over-enrichment from anthropogenic sources is one of the major stresses impacting coastal ecosystems. Generally, excess nutrients lead to eutrophic conditions and increased algal production which in turn increases the availability of organic carbon within the aquatic ecosystem. ...
Earth Science Final Exam Study Guide Name Class Date ______
... 44. Fossils tell the relative ages of the rock layers in which they occur a. cast c. index b. absolute d. mold 45. One of the units of geologic time into which geologist divide eras a. period c. era b. epoch d. century 46. A type of rock that forms when particles from other rocks or the remains of p ...
... 44. Fossils tell the relative ages of the rock layers in which they occur a. cast c. index b. absolute d. mold 45. One of the units of geologic time into which geologist divide eras a. period c. era b. epoch d. century 46. A type of rock that forms when particles from other rocks or the remains of p ...
Slide 1
... Although the early Earth was mostly devoid of molecular oxygen, high volcanic activity released significant amounts of molecular hydrogen. ...
... Although the early Earth was mostly devoid of molecular oxygen, high volcanic activity released significant amounts of molecular hydrogen. ...
Chapter 4 Assignment GEarthOL
... ridges and ocean trenches using figures 4.5, 4.6, 4.7 and 4.8. The matrix below is a good way for you to organize this information (you don’t have to use it but should provide a comparable response). It is best to work on this checkpoint after you have read the chapter and completed checkpoint 4.13 ...
... ridges and ocean trenches using figures 4.5, 4.6, 4.7 and 4.8. The matrix below is a good way for you to organize this information (you don’t have to use it but should provide a comparable response). It is best to work on this checkpoint after you have read the chapter and completed checkpoint 4.13 ...
_____, meaning *all land,* is the name for the great landmass that
... The Earth’s Interior • The core is the name for the center of Earth. – The outer core is made mostly of iron, and is so hot the iron is melted. – The inner core is also made mostly of iron, but it is solid. Why is the inner core solid? ...
... The Earth’s Interior • The core is the name for the center of Earth. – The outer core is made mostly of iron, and is so hot the iron is melted. – The inner core is also made mostly of iron, but it is solid. Why is the inner core solid? ...
The Hadean - Joe's Paleomag Home Page
... • Little by little our planet assumed a more familiar look, with a dense gaseous cloud zone we could call an atmosphere, a liquid zone with oceans, lakes and rivers, or hydrosphere, and a solid zone, or lithosphere with the first outlines of what would one day become continents. ...
... • Little by little our planet assumed a more familiar look, with a dense gaseous cloud zone we could call an atmosphere, a liquid zone with oceans, lakes and rivers, or hydrosphere, and a solid zone, or lithosphere with the first outlines of what would one day become continents. ...
Plate Tectonics Tutoiral Questions
... 3. a rise in sea level after deposition 4. crustal movement occurring after deposition ...
... 3. a rise in sea level after deposition 4. crustal movement occurring after deposition ...
Salinity Reading
... Everyone knows that the sea is salty but what exactly is the salt in the sea made of and how did it get there? Chemical Oceanography is the study of the chemicals that make up the salt in the ocean. Chemical Oceanographers are interested in knowing what kind of chemicals are present in the ocean, ho ...
... Everyone knows that the sea is salty but what exactly is the salt in the sea made of and how did it get there? Chemical Oceanography is the study of the chemicals that make up the salt in the ocean. Chemical Oceanographers are interested in knowing what kind of chemicals are present in the ocean, ho ...
Study Guide Exam #2
... Disclaimer: This is a summary of some of the highlight from lecture that may appear on Exam #2, but you should note that any subject that was covered in lecture may appear on the exam regardless of whether or not it appears on this study guide. Chapter 8: Earliest Earth What 4 factors are needed for ...
... Disclaimer: This is a summary of some of the highlight from lecture that may appear on Exam #2, but you should note that any subject that was covered in lecture may appear on the exam regardless of whether or not it appears on this study guide. Chapter 8: Earliest Earth What 4 factors are needed for ...
Plastic Pollution and The Ocean
... • The ocean enables 90% of global trade through shipping1 • 80% of all global tourism is based near the sea2 In addition, the ocean protects our global environment. It drives our weather by determining rainfall, droughts and floods. Ocean waters absorb vast amounts of carbon dioxide (CO2), helping ...
... • The ocean enables 90% of global trade through shipping1 • 80% of all global tourism is based near the sea2 In addition, the ocean protects our global environment. It drives our weather by determining rainfall, droughts and floods. Ocean waters absorb vast amounts of carbon dioxide (CO2), helping ...
Ophiolites as Archives of Recycled Crustal Material Residing in the
... ultrahigh-pressure minerals transports them to shallow mantle depths, where they participate in decompressional partial melting and oceanic lithosphere formation. The widespread occurrence of ophiolite-hosted diamonds and associated UHP mineral groups suggests that they may be a common feature of in ...
... ultrahigh-pressure minerals transports them to shallow mantle depths, where they participate in decompressional partial melting and oceanic lithosphere formation. The widespread occurrence of ophiolite-hosted diamonds and associated UHP mineral groups suggests that they may be a common feature of in ...
Anoxic event
Oceanic anoxic events or anoxic events (Anoxia conditions) refer to intervals in the Earth's past where portions of oceans become depleted in oxygen (O2) at depths over a large geographic area. During some of these events, euxinia develops - euxinia refers to anoxic waters that contain H2S hydrogen sulfide. Although anoxic events have not happened for millions of years, the geological record shows that they happened many times in the past. Anoxic events coincide with several mass extinctions and may contribute to these events. These mass extinctions include some that geobiologists use as time markers in biostratigraphic dating. It is believed oceanic anoxic events are strongly linked to slowing of ocean circulation, climatic warming and elevated levels of greenhouse gases. Enhanced volcanism (through the release of CO2 and other greenhouse gases) is the proposed central external trigger for the development of these events.