Plate Tectonics
... Some continents fit together almost perfectly, e.g. South America and Africa. Similar fossils can be found on different continents. This shows these regions were once very close or joined together. Almost identical patterns of rock layers on different continents is evidence that the rocks were once ...
... Some continents fit together almost perfectly, e.g. South America and Africa. Similar fossils can be found on different continents. This shows these regions were once very close or joined together. Almost identical patterns of rock layers on different continents is evidence that the rocks were once ...
LITHOSPHERIC BUOYANCY - Lunar and Planetary Institute
... of mantle potential temperature. At younger or older ages the lithosphere is positively or negatively buoyant, respectively. The maximum age of zero net buoyancy is about 300 Myr for a mantle potential temperature of about 15000C corresponding to a crustal thickness of about 40 km. It must be regard ...
... of mantle potential temperature. At younger or older ages the lithosphere is positively or negatively buoyant, respectively. The maximum age of zero net buoyancy is about 300 Myr for a mantle potential temperature of about 15000C corresponding to a crustal thickness of about 40 km. It must be regard ...
Evidence for layered mantle convection
... Experimental and theoretical studies of convecting systems generally yield plumes of some sort. For the Earth, of particular interest is whether deep plumes reach the surface. A critical limit on the egress of lower mantle plumes is whether mantle convection is whole or layered. Numerical models are ...
... Experimental and theoretical studies of convecting systems generally yield plumes of some sort. For the Earth, of particular interest is whether deep plumes reach the surface. A critical limit on the egress of lower mantle plumes is whether mantle convection is whole or layered. Numerical models are ...
TeachernotesL1 32.50KB 2017-03-29 12:41:27
... Upper mantle (close to the crust) is rigid and together with the crust forms the lithosphere Most of the mantle (asthenosphere) acts like it is semi-motlen. Temperatures near the core reach 5000oC High temperatures near the core are believed to be responsible for the generation of convection cur ...
... Upper mantle (close to the crust) is rigid and together with the crust forms the lithosphere Most of the mantle (asthenosphere) acts like it is semi-motlen. Temperatures near the core reach 5000oC High temperatures near the core are believed to be responsible for the generation of convection cur ...
Gravitational constraints Gravity anomalies
... The rate of deformation after a change in load is dependent on the flexural rigidity of the lithosphere and the viscosity of the mantle Need a load large enough which is added or removed quickly enough to observe the viscous response of the mantle 1. Smaller loads: ~100 km diameter tell us about up ...
... The rate of deformation after a change in load is dependent on the flexural rigidity of the lithosphere and the viscosity of the mantle Need a load large enough which is added or removed quickly enough to observe the viscous response of the mantle 1. Smaller loads: ~100 km diameter tell us about up ...
Earth’s Layers
... Thickness varies. Under mountains it can be as thick as 60 km and less than 5 km under the ocean. ...
... Thickness varies. Under mountains it can be as thick as 60 km and less than 5 km under the ocean. ...
GLY 150 Exam #1 STUDY GUIDE
... -----------------------------------------------------------------------This guide contains in an outline/question format the important points that have been covered in the course so far. You will be expected to have an understanding of this material for the exam, Thursday, Sept. 17, 2009. The exam w ...
... -----------------------------------------------------------------------This guide contains in an outline/question format the important points that have been covered in the course so far. You will be expected to have an understanding of this material for the exam, Thursday, Sept. 17, 2009. The exam w ...
Plate Tectonics
... • Supercontinent Pangaea started to break up about 200 million years ago. • Continents "drifted" to their present positions. ...
... • Supercontinent Pangaea started to break up about 200 million years ago. • Continents "drifted" to their present positions. ...
Physiography of the Seafloor
... Throughout most of the Paleozoic (600-225 Ma) sea level was high, widely flooding continents as shown in the maps above. Note the orientation of North America wrt the equator of the time. Land is dark, shallow seas are lightly shaded. Present coasts are shown for reference but are not geographically ...
... Throughout most of the Paleozoic (600-225 Ma) sea level was high, widely flooding continents as shown in the maps above. Note the orientation of North America wrt the equator of the time. Land is dark, shallow seas are lightly shaded. Present coasts are shown for reference but are not geographically ...
Webquest on Plate Tectonics
... Goals for today: • You will be able to explain the geological processes that shape the Earth’s Crust. • You will analyze and explain the theory of sea floor spreading and plate tectonics. • You will answer a series of questions about a) sea floor spreading b) plate tectonics to better your understa ...
... Goals for today: • You will be able to explain the geological processes that shape the Earth’s Crust. • You will analyze and explain the theory of sea floor spreading and plate tectonics. • You will answer a series of questions about a) sea floor spreading b) plate tectonics to better your understa ...
Untitled
... relationship. Geomorphology and Oceanography are the branches of geography which study the morphology of the earth. It is very interesting to know the evolution of our earth. The nature has provided this gift to us, which we are using for betterment of man to fulfill his growing needs. It is necessa ...
... relationship. Geomorphology and Oceanography are the branches of geography which study the morphology of the earth. It is very interesting to know the evolution of our earth. The nature has provided this gift to us, which we are using for betterment of man to fulfill his growing needs. It is necessa ...
Simon Bryant - Ikitomi Design home
... that has accumulated over a long time.”1 Earthquakes occur far more often than most people think. However, few of these earthquakes are strong enough to be felt by humans. Even fewer have the strength to cause major damage to people or to property. In fact, many earthquakes happen in areas where no ...
... that has accumulated over a long time.”1 Earthquakes occur far more often than most people think. However, few of these earthquakes are strong enough to be felt by humans. Even fewer have the strength to cause major damage to people or to property. In fact, many earthquakes happen in areas where no ...
Slide 1 - Linn-Benton Community College
... basins, poor circulation, may be anoxic in deep parts (Mediterranean, Black Sea) • Dead (or on life support) – still have water but landlocked (Aral sea, Caspian sea) ...
... basins, poor circulation, may be anoxic in deep parts (Mediterranean, Black Sea) • Dead (or on life support) – still have water but landlocked (Aral sea, Caspian sea) ...
Powerpoint presentation for Lecture 3 - e
... magnetic moment when they are cooled below the Curie Temperature ...
... magnetic moment when they are cooled below the Curie Temperature ...
the Exciting World of Earthquakes Part I
... horizontally past one another. Most faulting along spreading zones is normal, along subduction zones is thrust, and along transform faults is strike-slip. Geologists have found that earthquakes tend to reoccur along faults, which reflect zones of weakness in the Earth's crust. Even if a fault zone h ...
... horizontally past one another. Most faulting along spreading zones is normal, along subduction zones is thrust, and along transform faults is strike-slip. Geologists have found that earthquakes tend to reoccur along faults, which reflect zones of weakness in the Earth's crust. Even if a fault zone h ...
6.5 NOTES What causes plate tectonics? Objective: Describe the
... CONVECTION CURRENT is the movement of a gas or a liquid caused by differences in temperature and density. For example, warm air rises, and cool air sinks. ...
... CONVECTION CURRENT is the movement of a gas or a liquid caused by differences in temperature and density. For example, warm air rises, and cool air sinks. ...
Quiz - SLH PD Earthquakes
... and inner core. This model explains the Earth’s tectonic plate movements and other phenomena, such as our magnetic field. But how did we arrive at this model? Moulding the Earth When strain builds up in the Earth as a result of stress from tectonic movement, materials like clay can change shape rath ...
... and inner core. This model explains the Earth’s tectonic plate movements and other phenomena, such as our magnetic field. But how did we arrive at this model? Moulding the Earth When strain builds up in the Earth as a result of stress from tectonic movement, materials like clay can change shape rath ...
Introduction to Plate Tectonics via Google Earth
... the Earth below sea level. Before this was known, most people assumed that the seafloor was relatively flat and featureless, and personal experience with lakes and rivers suggested that the deepest part would be in the middle. Actual mapping of the sea floor, however, showed some surprises. Such map ...
... the Earth below sea level. Before this was known, most people assumed that the seafloor was relatively flat and featureless, and personal experience with lakes and rivers suggested that the deepest part would be in the middle. Actual mapping of the sea floor, however, showed some surprises. Such map ...
ch03_sec1
... near tectonic plate boundaries because of the enormous stresses that are generated when tectonic plates separate, collide or slip past each other. -Over the past 15 million to 20 million years, large numbers of earthquakes have occurred along the San Andreas fault in California, where parts of the ...
... near tectonic plate boundaries because of the enormous stresses that are generated when tectonic plates separate, collide or slip past each other. -Over the past 15 million to 20 million years, large numbers of earthquakes have occurred along the San Andreas fault in California, where parts of the ...
Earth Science, 10th edition Chapter 6: Earthquakes and Earth`s
... 1. Vibration of Earth produced by the rapid release of energy 2. Associated with movements along faults a. Explained by the plate tectonics theory b. Mechanism for earthquakes was first explained by H. Reid 1. Early 1900s 2. Rocks "spring back" a. Phenomena called elastic rebound b. Vibrations (eart ...
... 1. Vibration of Earth produced by the rapid release of energy 2. Associated with movements along faults a. Explained by the plate tectonics theory b. Mechanism for earthquakes was first explained by H. Reid 1. Early 1900s 2. Rocks "spring back" a. Phenomena called elastic rebound b. Vibrations (eart ...
Introduction to Plate Tectonics via Google Earth
... the Earth below sea level. Before this was known, most people assumed that the seafloor was relatively flat and featureless, and personal experience with lakes and rivers suggested that the deepest part would be in the middle. Actual mapping of the sea floor, however, showed some surprises. Such map ...
... the Earth below sea level. Before this was known, most people assumed that the seafloor was relatively flat and featureless, and personal experience with lakes and rivers suggested that the deepest part would be in the middle. Actual mapping of the sea floor, however, showed some surprises. Such map ...
PT Notes Fill in
... broke up, and _______________________________ to their present location 2. 1st proposed by German scientist _______________________________ in 1912 B. Wegener’s Evidence 1. ________________________________: Certain coast lines of continents seemed to fit like a _________________________________ a. _ ...
... broke up, and _______________________________ to their present location 2. 1st proposed by German scientist _______________________________ in 1912 B. Wegener’s Evidence 1. ________________________________: Certain coast lines of continents seemed to fit like a _________________________________ a. _ ...
Document
... an inclined fault plane. Can act like a _______________ b. Hanging Wall- the ________________________ surface of an inclined fault plane ...
... an inclined fault plane. Can act like a _______________ b. Hanging Wall- the ________________________ surface of an inclined fault plane ...
Post-glacial rebound
Post-glacial rebound (sometimes called continental rebound) is the rise of land masses that were depressed by the huge weight of ice sheets during the last glacial period, through a process known as isostatic depression. Post-glacial rebound and isostatic depression are different parts of a process known as either glacial isostasy, glacial isostatic adjustment, or glacioisostasy. Glacioisostasy is the solid Earth deformation associated with changes in ice mass distribution. The most obvious and direct affects of post-glacial rebound are readily apparent in northern Europe (especially Scotland, Estonia, Latvia, Fennoscandia, and northern Denmark), Siberia, Canada, the Great Lakes of Canada and the United States, the coastal region of the US state of Maine, parts of Patagonia, and Antarctica. However, through processes known as ocean siphoning and continental levering, the effects of post-glacial rebound on sea-level are felt globally far from the locations of current and former ice sheets.