gEOLOGy AND earth structure
... The geologic time scale divides Earth’s history into units of varying magnitude. It is commonly presented in chart form, with the oldest time and even at the bottom and the youngest at the top. The principle subdivisions of the geologic time scale, called eons, include the Hadean, Archean, Proterozo ...
... The geologic time scale divides Earth’s history into units of varying magnitude. It is commonly presented in chart form, with the oldest time and even at the bottom and the youngest at the top. The principle subdivisions of the geologic time scale, called eons, include the Hadean, Archean, Proterozo ...
Earth System Science: The Big Ideas
... continental landmass, containing some of the oldest rocks on Earth. ...
... continental landmass, containing some of the oldest rocks on Earth. ...
Geology 3015 Lecture Notes Week 12
... • The cyclic pattern of the ice ages can be related to minor changes in the earth’s rotation. Three factors influence the onset of ice ages • Obliquity of the earth’s axis • Eccentricity of the earth’s orbit • The precession of the earth’s axis • Each factor alone can cause a “little ice age” (1450- ...
... • The cyclic pattern of the ice ages can be related to minor changes in the earth’s rotation. Three factors influence the onset of ice ages • Obliquity of the earth’s axis • Eccentricity of the earth’s orbit • The precession of the earth’s axis • Each factor alone can cause a “little ice age” (1450- ...
METAMORPHISM & METAMORPHIC ROCKS
... Sediments of the Sea Floor • Terrigenous Sediment • Pelagic Sediment – thickness increases away from crest of midoceanic ridge ...
... Sediments of the Sea Floor • Terrigenous Sediment • Pelagic Sediment – thickness increases away from crest of midoceanic ridge ...
Earthquakes - Siemens Science Day
... An earthquake is the shaking of the ground caused by the rapid movement of underground rock. Earthquakes occur when rocks in the crust break or move suddenly along faults. Earthquakes change Earth’s surface rapidl ...
... An earthquake is the shaking of the ground caused by the rapid movement of underground rock. Earthquakes occur when rocks in the crust break or move suddenly along faults. Earthquakes change Earth’s surface rapidl ...
Earth`s Layers
... •Thickness varies. Under mountains it can be as thick as 60 km and less than 5 km under the ocean. •It is the least dense of all the layers. (lightest layer) •It is made up of silicon and oxygen. ...
... •Thickness varies. Under mountains it can be as thick as 60 km and less than 5 km under the ocean. •It is the least dense of all the layers. (lightest layer) •It is made up of silicon and oxygen. ...
Earth`s Layers ppt
... •Thickness varies. Under mountains it can be as thick as 60 km and less than 5 km under the ocean. •It is the least dense of all the layers. (lightest layer) •It is made up of silicon and oxygen. ...
... •Thickness varies. Under mountains it can be as thick as 60 km and less than 5 km under the ocean. •It is the least dense of all the layers. (lightest layer) •It is made up of silicon and oxygen. ...
Name - sfox4studentteacher
... continents and ocean floors. The theory of plate tectonics says that Earth’s plates move because of convection currents in the mantle. Plates interact with each other. Plates may pull apart (divergent), push together (convergent), or slide past each other (transform). Wherever plates meet, there are ...
... continents and ocean floors. The theory of plate tectonics says that Earth’s plates move because of convection currents in the mantle. Plates interact with each other. Plates may pull apart (divergent), push together (convergent), or slide past each other (transform). Wherever plates meet, there are ...
Earthquake_Revised
... Rocks break & move along surfaces called faults When plates move, stress is put on rocks. A rubber band (just like rocks) can only be stretched so far until it breaks; this is known as the elastic limit. Earthquakes are the Earth vibrating. ...
... Rocks break & move along surfaces called faults When plates move, stress is put on rocks. A rubber band (just like rocks) can only be stretched so far until it breaks; this is known as the elastic limit. Earthquakes are the Earth vibrating. ...
Powerpoint Presentation Physical Geology, 10/e
... the Earth: the crust, mantle and core • The crust is the outer layer of rock that forms a thin skin on Earth’s surface • The mantle is a thick shell of dense rock that separates the crust above from the core below • The core is the metallic central zone of the Earth ...
... the Earth: the crust, mantle and core • The crust is the outer layer of rock that forms a thin skin on Earth’s surface • The mantle is a thick shell of dense rock that separates the crust above from the core below • The core is the metallic central zone of the Earth ...
Flipped from head to toe: 100 years of continental drift
... as a magnetic polarization of the rocks in parallel edition in 1922 was translated into the languages strips either side of mid-ocean ridges. Now, the ??of the world and today is considered the obtained cores showed: No piece of the drilled foundation stone of plate tectonics. ocean floor was older ...
... as a magnetic polarization of the rocks in parallel edition in 1922 was translated into the languages strips either side of mid-ocean ridges. Now, the ??of the world and today is considered the obtained cores showed: No piece of the drilled foundation stone of plate tectonics. ocean floor was older ...
No Slide Title
... indicate, however, that there were an as yet undetermined number of pre-Illinoian glacial events and that the history of glacial advances and retreats in North America is more complex than previously thought ...
... indicate, however, that there were an as yet undetermined number of pre-Illinoian glacial events and that the history of glacial advances and retreats in North America is more complex than previously thought ...
Document
... drift? a. Similar rocks and similar fossils on different continents. b. Sea floor spreading and Earth’s rotation. c. Convection currents in the outer core. d. Fossils from ancient organism and convection currents in the crust. ...
... drift? a. Similar rocks and similar fossils on different continents. b. Sea floor spreading and Earth’s rotation. c. Convection currents in the outer core. d. Fossils from ancient organism and convection currents in the crust. ...
Plate Tectonics
... The dominant tree of the southern hemisphere during the early Triassic (250 MYA). Fossil ferns with seeds too big to blow across an ocean have been found in Africa, South America, India, Australia and Antarctica.. ...
... The dominant tree of the southern hemisphere during the early Triassic (250 MYA). Fossil ferns with seeds too big to blow across an ocean have been found in Africa, South America, India, Australia and Antarctica.. ...
Structure of Ocean Floor
... • Ocean (floor): younger, more dense, not as thick and made up of Basalt • Thus, the “Ocean Floor” “sinks” below the continent(s) and provides the habitats of ...
... • Ocean (floor): younger, more dense, not as thick and made up of Basalt • Thus, the “Ocean Floor” “sinks” below the continent(s) and provides the habitats of ...
Plate Tectonics and Continental Drift
... ____ 10.The ancient continent that contained all the landmasses is called Pangaea. ____ 11. A convection current of magma can be describes in terms of density as hot, less dense magma rising, and cool, more dense magma sinking. ____ 12. Continental crust is primarily composed of which rock? Granite ...
... ____ 10.The ancient continent that contained all the landmasses is called Pangaea. ____ 11. A convection current of magma can be describes in terms of density as hot, less dense magma rising, and cool, more dense magma sinking. ____ 12. Continental crust is primarily composed of which rock? Granite ...
Earthquake destruction and seismic waves Page 1 of 3 I. Factors
... a. due to increased pressure enhancing elastic properties of rock b. results in curved paths of seismic waves through Earth 2.abrupt velocity changes of waves at particular depths—causes refraction of waves a. S waves travel only through solids b. allows us to model Earth’s interior based on seismic ...
... a. due to increased pressure enhancing elastic properties of rock b. results in curved paths of seismic waves through Earth 2.abrupt velocity changes of waves at particular depths—causes refraction of waves a. S waves travel only through solids b. allows us to model Earth’s interior based on seismic ...
loeclosednotes
... - _______ km; ______% of Earths mass (together with the inner core) ž Composition: - _______-iron alloy (metal mixture) ž Properties/State of Matter: -_________, Earths ________field is believed to be controlled by the liquid outer core. ž INNER CORE: * The _______, dense center of our planet that e ...
... - _______ km; ______% of Earths mass (together with the inner core) ž Composition: - _______-iron alloy (metal mixture) ž Properties/State of Matter: -_________, Earths ________field is believed to be controlled by the liquid outer core. ž INNER CORE: * The _______, dense center of our planet that e ...
Lesson Title: Tectonic Forces World Geography, Module 1, Lesson 6
... Geographers, geologists, and many other scientists study the movement of the plates and the changes they cause in order to understand how the earth is continually being reshaped. You will study various types of tectonic forces. (Helpful Hint: This movement of the plates is sometimes called the conti ...
... Geographers, geologists, and many other scientists study the movement of the plates and the changes they cause in order to understand how the earth is continually being reshaped. You will study various types of tectonic forces. (Helpful Hint: This movement of the plates is sometimes called the conti ...
aircurrents - AIR Worldwide
... that beneath the NMSZ lies a region of lower crust and upper mantle that is weak. Both geological and geophysical data support an understanding of the NMSZ as the remnant of a rift that 600 million years ago failed to separate fully to form an ocean basin. Geologists have named the failed rift the “ ...
... that beneath the NMSZ lies a region of lower crust and upper mantle that is weak. Both geological and geophysical data support an understanding of the NMSZ as the remnant of a rift that 600 million years ago failed to separate fully to form an ocean basin. Geologists have named the failed rift the “ ...
Crust - Mrs. Bock
... The asthenosphere is the semi-rigid part of the middle mantle that flows like hot asphalt under a heavy ...
... The asthenosphere is the semi-rigid part of the middle mantle that flows like hot asphalt under a heavy ...
the dynamic crust - Discover Earth Science
... a. this suggests that at one time all the continents were one and later broke apart and moved to their present locations b. the west coast of Africa and the east coast of South America is the best example of this 2. Rocks on opposite sides of the Atlantic Ocean “match up” in terms of type, sequence, ...
... a. this suggests that at one time all the continents were one and later broke apart and moved to their present locations b. the west coast of Africa and the east coast of South America is the best example of this 2. Rocks on opposite sides of the Atlantic Ocean “match up” in terms of type, sequence, ...
Post-glacial rebound
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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.