European Research Council funds 2D ultra
... were required prior to data acquisition, which was not possible due to limited time. This restriction had two effects: (1) the maximum age of the lithosphere that can be imaged decreased from 100 Ma to 75 Ma and (2) two extra-turns were acquired to remain within the international waters. A total of ...
... were required prior to data acquisition, which was not possible due to limited time. This restriction had two effects: (1) the maximum age of the lithosphere that can be imaged decreased from 100 Ma to 75 Ma and (2) two extra-turns were acquired to remain within the international waters. A total of ...
Theory of Plate Tectonics PowerPoint
... boundary, a subduction zone is formed when one oceanic plate, which is denser as a result of cooling, descends below another oceanic plate. • The process of subduction creates an ocean trench. ...
... boundary, a subduction zone is formed when one oceanic plate, which is denser as a result of cooling, descends below another oceanic plate. • The process of subduction creates an ocean trench. ...
EGU2012-6051
... with periods of hot suboceanic mantle, while the mantle below smaller oceanic plates tends to be colder. Temperature fluctuations of subcontinental mantle are significantly smaller than in oceanic regions and caused by a time-variable efficiency of thermal insulation of the continental convection ce ...
... with periods of hot suboceanic mantle, while the mantle below smaller oceanic plates tends to be colder. Temperature fluctuations of subcontinental mantle are significantly smaller than in oceanic regions and caused by a time-variable efficiency of thermal insulation of the continental convection ce ...
CONSTRUCTING A SEA-FLOOR SPREADING MODEL
... PURPOSE: To demonstrate processes and features at mid-ocean ridges and at trenches. BACKGROUND INFORMATION: ...
... PURPOSE: To demonstrate processes and features at mid-ocean ridges and at trenches. BACKGROUND INFORMATION: ...
to Ch. 14, 16 Notes
... 21. ocean current: mass of ocean water that flows from one place to another 22. surface current: movement of water that flows horizontally in the upper part of the ocean’s surface 23. gyre: the large circular surface current pattern found in each ocean 24. Coriolis Effect: the apparent deflection of ...
... 21. ocean current: mass of ocean water that flows from one place to another 22. surface current: movement of water that flows horizontally in the upper part of the ocean’s surface 23. gyre: the large circular surface current pattern found in each ocean 24. Coriolis Effect: the apparent deflection of ...
News of the Northeast Pacific Ocean
... content in the Gulf of Alaska in the upper 700 m, computed from measurements made by Project Argo’s profiling floats. There are now more than 3000 active Argo floats scattered across all the oceans, whose measurements have provided high spatial and temporal resolution globally for almost a decade. W ...
... content in the Gulf of Alaska in the upper 700 m, computed from measurements made by Project Argo’s profiling floats. There are now more than 3000 active Argo floats scattered across all the oceans, whose measurements have provided high spatial and temporal resolution globally for almost a decade. W ...
types of plate boundaries 2014-2015
... plate motion in which cool, dense oceanic crust sinks into the mantle and “pulls” the trailing lithosphere along. It is thought to be the primary downward arm of convective flow in the mantle. • Ridge-push causes oceanic lithosphere to slide down the sides of the oceanic ridge under the pull of grav ...
... plate motion in which cool, dense oceanic crust sinks into the mantle and “pulls” the trailing lithosphere along. It is thought to be the primary downward arm of convective flow in the mantle. • Ridge-push causes oceanic lithosphere to slide down the sides of the oceanic ridge under the pull of grav ...
Physical Geology
... • Where plates move toward each other, oceanic crust and the underlying lithosphere is subducted beneath the other plate (with either oceanic crust or continental crust) • Wet crust is partially melted to form silicic (Silicarich, iron-poor, i.e., granitic) magma ...
... • Where plates move toward each other, oceanic crust and the underlying lithosphere is subducted beneath the other plate (with either oceanic crust or continental crust) • Wet crust is partially melted to form silicic (Silicarich, iron-poor, i.e., granitic) magma ...
Convergent Boundaries
... One important feature of a subduction boundary is a long, deep trench called a deep-sea trench that forms along the boundary. Such trenches are the deepest parts of the ocean floor. Subduction boundaries can occur at the convergence of two oceanic plates or at the convergence of an oceanic plate wit ...
... One important feature of a subduction boundary is a long, deep trench called a deep-sea trench that forms along the boundary. Such trenches are the deepest parts of the ocean floor. Subduction boundaries can occur at the convergence of two oceanic plates or at the convergence of an oceanic plate wit ...
"seeing" the bottom of the ocean
... horizontal driven by differences in temperature and salinity, hence it is called thermohaline circulation. Heat transport by moving water masses, likened to huge conveyer belts, is an important control of global climate. The following investigation of density-driven ocean circulation uses a set of t ...
... horizontal driven by differences in temperature and salinity, hence it is called thermohaline circulation. Heat transport by moving water masses, likened to huge conveyer belts, is an important control of global climate. The following investigation of density-driven ocean circulation uses a set of t ...
The Origin of Alkaline Lavas
... to peridotite containing a small melt fraction (~1%) (8, 9). This argument suggests that the mature oceanic lithosphere should be less than 95 km thick (8)—too thin for models in the 1970s (10) but consistent with more recent geophysical observations and models (11). Although melting of amphibole-ri ...
... to peridotite containing a small melt fraction (~1%) (8, 9). This argument suggests that the mature oceanic lithosphere should be less than 95 km thick (8)—too thin for models in the 1970s (10) but consistent with more recent geophysical observations and models (11). Although melting of amphibole-ri ...
MASTER SYLLABUS
... 25-1.describe the physical characteristics of the tropic seas and relate these properties to biological adaptations for survival; 25-2.explain the relationship between hermatypiccoral polyps and their symbiotic algae in terms of mutual benefits; 25-3.describe the coral animal and how it initiates r ...
... 25-1.describe the physical characteristics of the tropic seas and relate these properties to biological adaptations for survival; 25-2.explain the relationship between hermatypiccoral polyps and their symbiotic algae in terms of mutual benefits; 25-3.describe the coral animal and how it initiates r ...
Oceanic
... Created by a living thing or any living component within an environment in which the action of the organism affects the life of another organism ...
... Created by a living thing or any living component within an environment in which the action of the organism affects the life of another organism ...
Plate Tectonics - maxwellsciencenfhs
... called Pangaea, that broke into smaller continents which drifted apart to their present positions. ...
... called Pangaea, that broke into smaller continents which drifted apart to their present positions. ...
Plate Tectonics and Continental Drift
... • Ophiolites are rock sequences in mountain chains on land that are thought to represent slivers of ocean crust and uppermost mantle – Composed of layers 1-3 overlying ultramafic rock ...
... • Ophiolites are rock sequences in mountain chains on land that are thought to represent slivers of ocean crust and uppermost mantle – Composed of layers 1-3 overlying ultramafic rock ...
deep-ocean basin
... These sediments form a wedge at the base of the continental slope called a continental rise. ...
... These sediments form a wedge at the base of the continental slope called a continental rise. ...
Ocean Foldable
... 4. What makes the ocean salty? 5. What is the relationship between salinity & density? 6. What increases the salinity? 7. What decreases the salinity? 8. Why does the overall salinity of the ocean remain constant? Tab 3 – PINK – Dissolved Gases 1. Label this tab Dissolved Gases 2. What are the 3 maj ...
... 4. What makes the ocean salty? 5. What is the relationship between salinity & density? 6. What increases the salinity? 7. What decreases the salinity? 8. Why does the overall salinity of the ocean remain constant? Tab 3 – PINK – Dissolved Gases 1. Label this tab Dissolved Gases 2. What are the 3 maj ...
Chapter 4
... – the North Pole or the continents had moved – both Europe and North America had apparently moved as a single continent for several hundred million years ...
... – the North Pole or the continents had moved – both Europe and North America had apparently moved as a single continent for several hundred million years ...
Scientific Drilling
... energy among global reservoirs drive long-term changes in Earth’s structure and composition, cause volcanism and tectonism, and create hospitable environments for the development and evolution of life. Plate tectonic processes have been eclipsed at times in Earth’s history by episodes of massive mag ...
... energy among global reservoirs drive long-term changes in Earth’s structure and composition, cause volcanism and tectonism, and create hospitable environments for the development and evolution of life. Plate tectonic processes have been eclipsed at times in Earth’s history by episodes of massive mag ...
Integration of drilling into deep oceanic crust and seafloor
... Drilling for older seafloor may demonstrate difference of the source mantle conditions from that under currently active mid-ocean ridges, which will constrain for time-variation of the mid-ocean ridge process. Deep penetration is critical for older seafloor to obtain non-altered rocks beneath thick ...
... Drilling for older seafloor may demonstrate difference of the source mantle conditions from that under currently active mid-ocean ridges, which will constrain for time-variation of the mid-ocean ridge process. Deep penetration is critical for older seafloor to obtain non-altered rocks beneath thick ...
History of Deep Sea Biology - Monterey Bay Aquarium Research
... 8. Red clay of terrestrial origin in central oceans, manganese nodules rich in metals 9. Description of water masses based on T and S 10. Description of shelf , cont. slope upper and base ...
... 8. Red clay of terrestrial origin in central oceans, manganese nodules rich in metals 9. Description of water masses based on T and S 10. Description of shelf , cont. slope upper and base ...
Earth Science Regents Review
... 5) What happened to the earth’s magnetic field? • Periodically, the poles switch ...
... 5) What happened to the earth’s magnetic field? • Periodically, the poles switch ...
A A Quest For Resilient Reefs
... What has changed in the ocean to put corals at risk? For the past several thousand years, the concentration of carbonate ions in seawater has remained relatively stable. Corals evolving over that time period have adapted to building their calcium carbonate skeletons with seawater at a concentration ...
... What has changed in the ocean to put corals at risk? For the past several thousand years, the concentration of carbonate ions in seawater has remained relatively stable. Corals evolving over that time period have adapted to building their calcium carbonate skeletons with seawater at a concentration ...
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.