![Plate Tectonics 1](http://s1.studyres.com/store/data/016891060_1-db91d5951689a8c5190a01ebdcdca35e-300x300.png)
Powerpoint Presentation Physical Geology, 10/e
... the magnetic pole when rocks formed – Steeper dip angles indicate rocks formed closer to the magnetic poles ...
... the magnetic pole when rocks formed – Steeper dip angles indicate rocks formed closer to the magnetic poles ...
Mid-ocean Ridge Spreading
... spreading ridges like the northern and southern East Pacific Rise are “hotter.” This means that the ridge spreads more like hot taffy being pulled apart. More magma is present beneath the ridge and more volcanic eruptions occur. Because the oceanic crustal layer in this new lithosphere is formed fro ...
... spreading ridges like the northern and southern East Pacific Rise are “hotter.” This means that the ridge spreads more like hot taffy being pulled apart. More magma is present beneath the ridge and more volcanic eruptions occur. Because the oceanic crustal layer in this new lithosphere is formed fro ...
TennMaps_PlateTectonics
... The Earth has a magnetic field This why a compass points to the north The simple presence of iron in the Earth’s core is not enough to account for the Earth’s magnetic field ...
... The Earth has a magnetic field This why a compass points to the north The simple presence of iron in the Earth’s core is not enough to account for the Earth’s magnetic field ...
Chapter 17: Plate Tectonics
... b) diamonds and other similar minerals are found on east coast of S. America and the west coast of Africa 3. Evidence of past glaciers are found on both continents, indicating that both continents were at a different latitude at one time II. Spreading Centers A. Mid- Ocean Ridges 1. Areas where the ...
... b) diamonds and other similar minerals are found on east coast of S. America and the west coast of Africa 3. Evidence of past glaciers are found on both continents, indicating that both continents were at a different latitude at one time II. Spreading Centers A. Mid- Ocean Ridges 1. Areas where the ...
Physical Geography - Brogranoni-GEO1
... In 1948 a scientist called Ewing was examining a group of islands in the Atlantic Ocean. He discovered that the islands were the highest points along a mountain range hidden below the sea. The mountain range was huge, and much to his surprise he discovered it was made of young volcanic rocks, not a ...
... In 1948 a scientist called Ewing was examining a group of islands in the Atlantic Ocean. He discovered that the islands were the highest points along a mountain range hidden below the sea. The mountain range was huge, and much to his surprise he discovered it was made of young volcanic rocks, not a ...
Answers to the Study Guide!
... parallel to the ridge on both sides, showing they were created at the same time but have moved away from each other. Where does sea floor spreading take place? (other than the sea floor ) At the mid-ocean ridge, located along oceanic divergent plate boundaries. What is the theory of continental dri ...
... parallel to the ridge on both sides, showing they were created at the same time but have moved away from each other. Where does sea floor spreading take place? (other than the sea floor ) At the mid-ocean ridge, located along oceanic divergent plate boundaries. What is the theory of continental dri ...
ch07 (1) - earthjay science
... subducted and re-melted during plate tectonics. 18. Exotic terrains will have rock types and fossil contents that are significantly different from directly adjacent areas. In the Appalachians, a terrain which showed southern ocean faunas would be a likely alien terrain. A micro-continent-derived ter ...
... subducted and re-melted during plate tectonics. 18. Exotic terrains will have rock types and fossil contents that are significantly different from directly adjacent areas. In the Appalachians, a terrain which showed southern ocean faunas would be a likely alien terrain. A micro-continent-derived ter ...
PLATE TECTONICS
... These magnetic reversals are caused by changes in Earth’s magnetic fields. Bands of rock record periods of magnetic reversals. As molten material cools, magnetic minerals line up with the magnetic field. When it hardens, the minerals act like tiny compass needles. ...
... These magnetic reversals are caused by changes in Earth’s magnetic fields. Bands of rock record periods of magnetic reversals. As molten material cools, magnetic minerals line up with the magnetic field. When it hardens, the minerals act like tiny compass needles. ...
HOMOGENOUS EARTH
... CORE: 1/6TH Earth’s volume, 1/3RD Of the Earth’s Mass; Pressure >3 Million atmosph.; Temp.~4,700ºC; Composition: IRON-NICKEL, Consistent with Seismic data, meteorite data, and mathematical model ...
... CORE: 1/6TH Earth’s volume, 1/3RD Of the Earth’s Mass; Pressure >3 Million atmosph.; Temp.~4,700ºC; Composition: IRON-NICKEL, Consistent with Seismic data, meteorite data, and mathematical model ...
Continental Drift and Seafloor Spreading
... 3. Glossopteris- plant fossils found on different continents- Plant fossils 4. Tropical plant fossils that were found on an island in Artic Ocean! (Scratches in rocks made by glaciers in South Africa) The continental drift theory was NOT accepted because Wegener could not explain HOW the continents ...
... 3. Glossopteris- plant fossils found on different continents- Plant fossils 4. Tropical plant fossils that were found on an island in Artic Ocean! (Scratches in rocks made by glaciers in South Africa) The continental drift theory was NOT accepted because Wegener could not explain HOW the continents ...
Outline
... • Wegener did not provide a plausible mechanism to explain how the continents could have drifted apart • Most Earth scientists rejected continental drift because it was – Too far-fetched – Contrary to the laws of physics The theory of plate tectonics • Continental drift was reexamined in the 1960s w ...
... • Wegener did not provide a plausible mechanism to explain how the continents could have drifted apart • Most Earth scientists rejected continental drift because it was – Too far-fetched – Contrary to the laws of physics The theory of plate tectonics • Continental drift was reexamined in the 1960s w ...
polish magnetic measurements in the baltic — history and prospects
... Since the 1990s Flux-Gate compasses (also called electronic compasses) have been more and more common in use onboard ships. Their construction and digital output signal allow for transmitting the precise course-related data to other appliances in the ship, for example to autopilots or ECDIS. This me ...
... Since the 1990s Flux-Gate compasses (also called electronic compasses) have been more and more common in use onboard ships. Their construction and digital output signal allow for transmitting the precise course-related data to other appliances in the ship, for example to autopilots or ECDIS. This me ...
test - Scioly.org
... 22 Los Angeles is on the “Continental” side of San Adreas Fault while San Francisco is along the Pacific Plate and will eventually sink into the ocean 23 Age of the oceanic rocks are the same throughout the ocean basin 24 The two main tectonic features that can be used to identify Plate boundaries a ...
... 22 Los Angeles is on the “Continental” side of San Adreas Fault while San Francisco is along the Pacific Plate and will eventually sink into the ocean 23 Age of the oceanic rocks are the same throughout the ocean basin 24 The two main tectonic features that can be used to identify Plate boundaries a ...
The Oldest Crust in Ocean Basins
... Scientists have been studying this area, in water depths of more than 6000m, through ocean drilling for more than three decades. The most recent penetration of the approximately 170 million-yearold crust by ODP occurred on Leg 185 as part of the "Subduction Factory Experiment". ...
... Scientists have been studying this area, in water depths of more than 6000m, through ocean drilling for more than three decades. The most recent penetration of the approximately 170 million-yearold crust by ODP occurred on Leg 185 as part of the "Subduction Factory Experiment". ...
P-waves
... Inner Core - solid Fe (some Ni, Co, S, C), ~2500 km thick How do we know? Meteorites, Seismology, Magnetic field ...
... Inner Core - solid Fe (some Ni, Co, S, C), ~2500 km thick How do we know? Meteorites, Seismology, Magnetic field ...
Activity #8 slide presentation pdf
... "Scientists still do not appear to understand sufficiently that all earth sciences must contribute evidence toward unveiling the state of our planet in earlier times, and that the truth of the matter can only be reached by combing all this evidence. . . It is only by combing the information furnishe ...
... "Scientists still do not appear to understand sufficiently that all earth sciences must contribute evidence toward unveiling the state of our planet in earlier times, and that the truth of the matter can only be reached by combing all this evidence. . . It is only by combing the information furnishe ...
Chapter2.pdf
... dipole magnet. This means it has a north and a south pole. The force generated by a magnetic field repels charged particles. ...
... dipole magnet. This means it has a north and a south pole. The force generated by a magnetic field repels charged particles. ...
“Continental Drift and Plate Tectonics Study Guide”
... ocean (50 million years old). Magnetic reversals can also be used as seafloor spreading proof. Every 200,000 years or so, the earth’s poles reverse. During those times any rock that forms will have a record of what the polarity was at that time. Since the polarity of the rock that makes up the ocea ...
... ocean (50 million years old). Magnetic reversals can also be used as seafloor spreading proof. Every 200,000 years or so, the earth’s poles reverse. During those times any rock that forms will have a record of what the polarity was at that time. Since the polarity of the rock that makes up the ocea ...
6 th Grade Science Sample Assessment Items S6E5e.
... D. river plain Explanation of Correct Answer from the Study/Resource Guide: The correct answer is choice (C) rift valley. The diagram shows a divergent boundary where two plates are separating. At the boundary, magma from the mantle is pushed up, creating new crust. The movement of plates as they sp ...
... D. river plain Explanation of Correct Answer from the Study/Resource Guide: The correct answer is choice (C) rift valley. The diagram shows a divergent boundary where two plates are separating. At the boundary, magma from the mantle is pushed up, creating new crust. The movement of plates as they sp ...
Plate Tectonics Study Guide
... What happens at a convergent plate boundary? How do the plates move? What geologic landforms are present at a convergent plate boundary? (Hint: there are three types of convergent plate boundaries) ...
... What happens at a convergent plate boundary? How do the plates move? What geologic landforms are present at a convergent plate boundary? (Hint: there are three types of convergent plate boundaries) ...
ppt: Plate Tectonics Intro- Theory and History
... 1924 - Alfred Wegener developed the theory of Continental Drift to explain the similarities of rocks, fossils and other geological structures on either side of the Atlantic. At this time it was accepted that the continents sat like icebergs on the mantle and as the continents eroded they rose out o ...
... 1924 - Alfred Wegener developed the theory of Continental Drift to explain the similarities of rocks, fossils and other geological structures on either side of the Atlantic. At this time it was accepted that the continents sat like icebergs on the mantle and as the continents eroded they rose out o ...
Plate Tectonics Intro- Theory and History
... 1924 - Alfred Wegener developed the theory of Continental Drift to explain the similarities of rocks, fossils and other geological structures on either side of the Atlantic. At this time it was accepted that the continents sat like icebergs on the mantle and as the continents eroded they rose out o ...
... 1924 - Alfred Wegener developed the theory of Continental Drift to explain the similarities of rocks, fossils and other geological structures on either side of the Atlantic. At this time it was accepted that the continents sat like icebergs on the mantle and as the continents eroded they rose out o ...
sample test1 - this is only for questions style
... All of the following phrases below describe science: a) Science is the ability to formulate ideas. b) Science is the study of nature using observation and deductive reasoning c) Science is the method used to test an idea. d) Science will assume answers based on preconceived ideas. Science is: a) not ...
... All of the following phrases below describe science: a) Science is the ability to formulate ideas. b) Science is the study of nature using observation and deductive reasoning c) Science is the method used to test an idea. d) Science will assume answers based on preconceived ideas. Science is: a) not ...
Lec 5
... meeting of these two plates before and after their collision. The reference points (small squares) show the amount of uplift of an imaginary point in the Earth's crust during this mountain-building process. ...
... meeting of these two plates before and after their collision. The reference points (small squares) show the amount of uplift of an imaginary point in the Earth's crust during this mountain-building process. ...
Geomagnetic reversal
A geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged. The Earth's field has alternated between periods of normal polarity, in which the direction of the field was the same as the present direction, and reverse polarity, in which the field was the opposite. These periods are called chrons. The time spans of chrons are randomly distributed with most being between 0.1 and 1 million years with an average of 450,000 years. Most reversals are estimated to take between 1,000 and 10,000 years.The latest one, the Brunhes–Matuyama reversal, occurred 780,000 years ago;and may have happened very quickly, within a human lifetime. A brief complete reversal, known as the Laschamp event, occurred only 41,000 years ago during the last glacial period. That reversal lasted only about 440 years with the actual change of polarity lasting around 250 years. During this change the strength of the magnetic field dropped to 5% of its present strength. Brief disruptions that do not result in reversal are called geomagnetic excursions.