test - Scioly.org
... 49. List two notable examples of hotspots in the United States. [2 points] 50. What is the term for proposed hotspot mechanisms that originate from relatively fixed areas at the core-mantle boundary? 51. What type of sedimentary basin occurs due to lithospheric flexure adjacent to orogens? 52. What ...
... 49. List two notable examples of hotspots in the United States. [2 points] 50. What is the term for proposed hotspot mechanisms that originate from relatively fixed areas at the core-mantle boundary? 51. What type of sedimentary basin occurs due to lithospheric flexure adjacent to orogens? 52. What ...
Earth, continental drift, plate tectonics, sea floor spreading
... the earth that play a vital role in the formation of our continents, mountains, volcanoes, etc. ...
... the earth that play a vital role in the formation of our continents, mountains, volcanoes, etc. ...
Ocean Margins - Penn State York Home Page
... • Which is steepest? • Which are over basalt? • Which stops at a ridge? • Which typically has high biological productivity in the surface seawater above? Which margin type typically has a divergent plate boundary far away and nothing convergence of faulting in between? ...
... • Which is steepest? • Which are over basalt? • Which stops at a ridge? • Which typically has high biological productivity in the surface seawater above? Which margin type typically has a divergent plate boundary far away and nothing convergence of faulting in between? ...
Unit 2
... common ions for reference, you are expected to know these ions for the AP test and thus for this course. After this page is a sheet of elements; you are expected to know the symbols and names of those elements. The packet is important, but more important is that you understand the material on this. ...
... common ions for reference, you are expected to know these ions for the AP test and thus for this course. After this page is a sheet of elements; you are expected to know the symbols and names of those elements. The packet is important, but more important is that you understand the material on this. ...
Unit 2
... questions via email all summer at [email protected]. To aid you, you should read (and cover) the Brown and LeMay Chemistry the Central Science book. The assignment focuses on all of chapters 1,2,3 and chapter 10. Also, at the end of the assignment are two important sheets. The first is a s ...
... questions via email all summer at [email protected]. To aid you, you should read (and cover) the Brown and LeMay Chemistry the Central Science book. The assignment focuses on all of chapters 1,2,3 and chapter 10. Also, at the end of the assignment are two important sheets. The first is a s ...
The Carbon Cycle
... Industrial Revolution • Atmospheric levels have increased over 30%, from 275 ppm to 365 ppm ...
... Industrial Revolution • Atmospheric levels have increased over 30%, from 275 ppm to 365 ppm ...
Guided Notes on the Theory of Plate Tectonics
... are broken into enormous slabs called plates. These plates move in different directions and at different speeds and this movement is caused by the Earth’s internal heat. ...
... are broken into enormous slabs called plates. These plates move in different directions and at different speeds and this movement is caused by the Earth’s internal heat. ...
Presentation
... For Earth to be cold and dry, atmospheric CO2 must have been much lower, but it is unclear what would cause low concentrations. Some climate changes have been very rapid. Extinctions caused by them appear to be “instantaneous” in the fossil record. ...
... For Earth to be cold and dry, atmospheric CO2 must have been much lower, but it is unclear what would cause low concentrations. Some climate changes have been very rapid. Extinctions caused by them appear to be “instantaneous” in the fossil record. ...
Plate Tectonics
... Fossils of continents meshed in key areas People did not go along with theory, because they could not figure out what force would be strong enough to move a continent. Continents would crack if pushed through ocean Gravity would not make them go “downhill” Spin of the Earth was not fast enough Wegen ...
... Fossils of continents meshed in key areas People did not go along with theory, because they could not figure out what force would be strong enough to move a continent. Continents would crack if pushed through ocean Gravity would not make them go “downhill” Spin of the Earth was not fast enough Wegen ...
Organic Compound Synthesis on the Primitive Earth
... Our discussion is based on the assumption that conditions on the primitive earth were favorable for the production of the organic compounds which make up life as we know it. There are many sets of conditions under which organic compounds could have been produced. All these conditions are more or les ...
... Our discussion is based on the assumption that conditions on the primitive earth were favorable for the production of the organic compounds which make up life as we know it. There are many sets of conditions under which organic compounds could have been produced. All these conditions are more or les ...
Volcanoes Reading - SOEST
... Mantle plumes or hot spots were first hypothesized in 1963 by J. Tuzo Wilson of the University of Toronto to explain the formation of linear island chains in the Pacific Ocean. The Hawaiian Island archipelago and the Emperor Seamount chain are probably the best known among these chains. Wilson propo ...
... Mantle plumes or hot spots were first hypothesized in 1963 by J. Tuzo Wilson of the University of Toronto to explain the formation of linear island chains in the Pacific Ocean. The Hawaiian Island archipelago and the Emperor Seamount chain are probably the best known among these chains. Wilson propo ...
Viruses and prokaryotes in the deep-sea
... This process, called “viral shunt”, fuels prokaryotic heterotrophic production by releasing dissolved organic compounds and/or support autotrophic production by enhancing nutrient regeneration pathways, but it can also decrease the efficiency of the carbon transfer to higher trophic levels. The oce ...
... This process, called “viral shunt”, fuels prokaryotic heterotrophic production by releasing dissolved organic compounds and/or support autotrophic production by enhancing nutrient regeneration pathways, but it can also decrease the efficiency of the carbon transfer to higher trophic levels. The oce ...
Lecture 8: Plate Boundaries
... • Does life play a role? (Gaia) • Earth is only planet with life AND plate tectonics • Is there a connection? Cause-effect? • See Lovelock work • Life affects weathering and calcite deposition ...
... • Does life play a role? (Gaia) • Earth is only planet with life AND plate tectonics • Is there a connection? Cause-effect? • See Lovelock work • Life affects weathering and calcite deposition ...
Lecture 13 Summary
... which new oceanic lithosphere (crust + mantle) is generated in response to partial melting of mantle lherzolite undergoing adiabatic decompression in a narrow zone of upwelling. Essentially the oceanic crust can be divided into two major domains: (1) The accreting plate boundary zone (mid-ocean ridg ...
... which new oceanic lithosphere (crust + mantle) is generated in response to partial melting of mantle lherzolite undergoing adiabatic decompression in a narrow zone of upwelling. Essentially the oceanic crust can be divided into two major domains: (1) The accreting plate boundary zone (mid-ocean ridg ...
Plate Tectonic
... • At a convergent boundary, two plates come together, or converge (“collide”) Sketch of Boundary ...
... • At a convergent boundary, two plates come together, or converge (“collide”) Sketch of Boundary ...
Nutrient stoichiometry – Redfield ratios
... of living things in the surface ocean. - He found that globally the elemental composition of marine organic matter (dead & living) was remarkably constant. - The ratios of carbon to nitrogen to phosphorus remained the same from coastal to open ocean regions. - Redfield thought it wasn't purely coinc ...
... of living things in the surface ocean. - He found that globally the elemental composition of marine organic matter (dead & living) was remarkably constant. - The ratios of carbon to nitrogen to phosphorus remained the same from coastal to open ocean regions. - Redfield thought it wasn't purely coinc ...
Chapter 3 Understanding the `big ideas`: major concepts that
... couldn’t find, since the plates were carried by currents in the mantle beneath them. It took a few years for geologists across the world to change their ideas, but by the mid1970s most geologists believed the new theory. Soon, the theory that the whole surface of the Earth had been in sideways motio ...
... couldn’t find, since the plates were carried by currents in the mantle beneath them. It took a few years for geologists across the world to change their ideas, but by the mid1970s most geologists believed the new theory. Soon, the theory that the whole surface of the Earth had been in sideways motio ...
The Ocean Floor - Travelling across time
... The Ocean Floor What is going on at the Marianas trench? The oceanic plate or in this case the fastmoving pacific plate, plunges downward toward the mantle, while the continental plate or the Philippine Plate, rides up over the top. The forces driving the two plates together are really intense, so ...
... The Ocean Floor What is going on at the Marianas trench? The oceanic plate or in this case the fastmoving pacific plate, plunges downward toward the mantle, while the continental plate or the Philippine Plate, rides up over the top. The forces driving the two plates together are really intense, so ...
Most Inhospitable Places on Earth A The
... s the remotely operated vehicle Jason approached the bottom of the Mediterranean Sea, its cameras relayed an eerie scene back to the research vessel Atlantis. It looked like a dark lake on the seafloor. A narrow white stripe meandered across the brown seafloor like a beachfront; beyond it lay an imp ...
... s the remotely operated vehicle Jason approached the bottom of the Mediterranean Sea, its cameras relayed an eerie scene back to the research vessel Atlantis. It looked like a dark lake on the seafloor. A narrow white stripe meandered across the brown seafloor like a beachfront; beyond it lay an imp ...
Geology of Australia and New Zealand, HWS/UC 2007 2. Plate
... beneath the upper plate of ocean crust on the left side is cold upper mantle that is part of the lithosphere. You can imagine a similar thickness of upper mantle being part of the lithosphere of the subducting plate (on the right hand side). Release of water and melting of ocean crust from the subdu ...
... beneath the upper plate of ocean crust on the left side is cold upper mantle that is part of the lithosphere. You can imagine a similar thickness of upper mantle being part of the lithosphere of the subducting plate (on the right hand side). Release of water and melting of ocean crust from the subdu ...
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.