When Continents Collide by Ole Hendrickson Slow
... Erosion wore away Rodinia’s great mountains and exposed their granitic roots during the next 250 million years. As the thickness and weight of the crust decreased, the remaining nubs of the mountains floated upwards on the heavier underlying molten mantle. During the late Precambrian, 750 million ye ...
... Erosion wore away Rodinia’s great mountains and exposed their granitic roots during the next 250 million years. As the thickness and weight of the crust decreased, the remaining nubs of the mountains floated upwards on the heavier underlying molten mantle. During the late Precambrian, 750 million ye ...
STUDY GUIDE FOR MIDTERM EXAM These questions will be on
... In what figure above would the movements result in an earthquake? In what figure above would the movements result in mountain building? In what figure above would the movements result in a fault line or deep valley? ...
... In what figure above would the movements result in an earthquake? In what figure above would the movements result in mountain building? In what figure above would the movements result in a fault line or deep valley? ...
Wegener—Continental Drift
... B. Molten mixture of rock-forming substances, gases, and water from the mantle. C. Theory that pieces of Earth’s lithosphere are in constant motion, driven by convection currents in the mantle. D. Process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle. ...
... B. Molten mixture of rock-forming substances, gases, and water from the mantle. C. Theory that pieces of Earth’s lithosphere are in constant motion, driven by convection currents in the mantle. D. Process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle. ...
Mountain Belts formed at Divergent and Convergent Boundaries
... Mid Ocean Ridges • Continuous underwater mountain chains that extend up to 60,000 km around the globe. • Generally around 1500km wide and have peaks around 3km high. • Site of most volcanism on earth ...
... Mid Ocean Ridges • Continuous underwater mountain chains that extend up to 60,000 km around the globe. • Generally around 1500km wide and have peaks around 3km high. • Site of most volcanism on earth ...
Topography of the Ocean Floor Notes
... Submarine Canyon – A deep, eroded area in the continental slope carved out by turbidity currents ...
... Submarine Canyon – A deep, eroded area in the continental slope carved out by turbidity currents ...
Part 2 - Mahopac Voyagers!
... formed approximately 1,850 million years ago, which was during the A) Middle Archean Era ...
... formed approximately 1,850 million years ago, which was during the A) Middle Archean Era ...
3. Ocean Geography Notes
... Two types of crust, Continental & Oceanic Oceanic crust is constantly being reformed When it meets the continental crust it subducts into the mantle because it is more dense ...
... Two types of crust, Continental & Oceanic Oceanic crust is constantly being reformed When it meets the continental crust it subducts into the mantle because it is more dense ...
Moving Plates: Restless Earth
... In the 1960’s, scientists used new discoveries about the sea floor to develop a theory ...
... In the 1960’s, scientists used new discoveries about the sea floor to develop a theory ...
8_Ocean126_2006
... Conspicuous features of passive (tectonically inactive) margins so rare in the Pacific ...
... Conspicuous features of passive (tectonically inactive) margins so rare in the Pacific ...
T2 Precambrian Geology Homework KEY
... b) Shallow marine sediments were deposited along the continental margins. c) Mantle convection slowed, allowing larger continents to form. d) Mantle convection was even greater than in the previous Archean.. 13) Which type of tectonic activity was NOT present in the Early Proterozoic of North Americ ...
... b) Shallow marine sediments were deposited along the continental margins. c) Mantle convection slowed, allowing larger continents to form. d) Mantle convection was even greater than in the previous Archean.. 13) Which type of tectonic activity was NOT present in the Early Proterozoic of North Americ ...
Chapter 2 Tectonic Theory (A)
... Hypothesis: Continental drift Wegener proposed one large continent (1912) ◦ Pangaea Surrounded by single large ocean ◦ Panthalassa About 200 million years ago ...
... Hypothesis: Continental drift Wegener proposed one large continent (1912) ◦ Pangaea Surrounded by single large ocean ◦ Panthalassa About 200 million years ago ...
Unit 4
... C In Wegener`s mind, the drifting of continents after the break-up of Pangaea explained not only the matching fossil occurrences but also the evidence of dramatic climate change on some continents. For example, indications that there were once glaciers in regions of South Africa led to the conclusio ...
... C In Wegener`s mind, the drifting of continents after the break-up of Pangaea explained not only the matching fossil occurrences but also the evidence of dramatic climate change on some continents. For example, indications that there were once glaciers in regions of South Africa led to the conclusio ...
1. Relative dating is using comparison to date rocks or fossils. Law
... break down. Carbon-14, Uranium-235, Plutonium-238 4. The question asks how much of a 96 g sample will be left after 8.1 days when the halflife is 2.7 days. 3 half-lives of gold go by in 8.1 days. # of Halflives ...
... break down. Carbon-14, Uranium-235, Plutonium-238 4. The question asks how much of a 96 g sample will be left after 8.1 days when the halflife is 2.7 days. 3 half-lives of gold go by in 8.1 days. # of Halflives ...
Ch. 10 Earth Science Study Guide The youngest rocks on the ocean
... An oceanographer (a person who studies the ocean floor) is traveling from the west toward the east on the Atlantic Ocean. She collects rock samples from the seafloor every 5 kilometers. The oceanographer stops when she determines that the rock samples are getting increasingly younger as she moves to ...
... An oceanographer (a person who studies the ocean floor) is traveling from the west toward the east on the Atlantic Ocean. She collects rock samples from the seafloor every 5 kilometers. The oceanographer stops when she determines that the rock samples are getting increasingly younger as she moves to ...
Plate Tectonic Vocabulary Chapter 10 Pages 239-260
... ______ 27. One mountain range that formed when Pangaea was created was a. the Rocky Mountains. b. the Alps. c. the Himalayas. d. the Appalachians. ______ 28. How were Laurasia and Gondwanaland created? a. Pangaea collided with another supercontinent. ...
... ______ 27. One mountain range that formed when Pangaea was created was a. the Rocky Mountains. b. the Alps. c. the Himalayas. d. the Appalachians. ______ 28. How were Laurasia and Gondwanaland created? a. Pangaea collided with another supercontinent. ...
Are the continents moving? What are plate tectonics?
... had once been joined, and over time had drifted apart. Pangaea was a supercontinent that included all the world's landmasses in the late Paleozoic and, according to the theory of plate tectonics. ...
... had once been joined, and over time had drifted apart. Pangaea was a supercontinent that included all the world's landmasses in the late Paleozoic and, according to the theory of plate tectonics. ...
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. ...
Plate Tectonics
... • Convection currents are the result of uneven heating inside the mantle resulting in the melting of rock; convection, eruption and flow of magma; and the movement of crustal plates. • Rock layers are affected by the folding, breaking, and uplifting of rock layers due to plate motion. • The movement ...
... • Convection currents are the result of uneven heating inside the mantle resulting in the melting of rock; convection, eruption and flow of magma; and the movement of crustal plates. • Rock layers are affected by the folding, breaking, and uplifting of rock layers due to plate motion. • The movement ...
1 - Catawba County Schools
... D. How does this change your understanding of the founding of America and Columbus? 3. Using the primary sources on the following website answer the following Discussion Questions 1. Overall, what are the Europeans' first impressions of the new lands and their inhabitants? 2. What do they find impor ...
... D. How does this change your understanding of the founding of America and Columbus? 3. Using the primary sources on the following website answer the following Discussion Questions 1. Overall, what are the Europeans' first impressions of the new lands and their inhabitants? 2. What do they find impor ...
Historical Geology
... Latest Paleozoic / Early Mesozoic The supercontinent Pangaea dominates the Permian Earth, lying across the equator. Extinctions! Trilobites go away. North America: A new arc approaches western North America. A new spreading center forms as Cimmeria rifts from Gondwana and opens the Tethyian Ocean. ...
... Latest Paleozoic / Early Mesozoic The supercontinent Pangaea dominates the Permian Earth, lying across the equator. Extinctions! Trilobites go away. North America: A new arc approaches western North America. A new spreading center forms as Cimmeria rifts from Gondwana and opens the Tethyian Ocean. ...
Plate Tectonics
... • Plates move • Plate interactions produce specific features (e.g., mountains, etc.) and processes (e.g., ...
... • Plates move • Plate interactions produce specific features (e.g., mountains, etc.) and processes (e.g., ...
Freshwater reptile Mesosaurus
... • During Pangaea, continents had completely different environments. ...
... • During Pangaea, continents had completely different environments. ...
Geological history of Earth
The geological history of Earth follows the major events in Earth's past based on the geologic time scale, a system of chronological measurement based on the study of the planet's rock layers (stratigraphy). Earth formed about 4.54 billion years ago by accretion from the solar nebula, a disk-shaped mass of dust and gas left over from the formation of the Sun, which also created the rest of the Solar System.Earth was initially molten due to extreme volcanism and frequent collisions with other bodies. Eventually, the outer layer of the planet cooled to form a solid crust when water began accumulating in the atmosphere. The Moon formed soon afterwards, possibly as the result of a Mars-sized object with about 10% of the Earth's mass impacting the planet in a glancing blow. Some of this object's mass merged with the Earth, significantly altering its internal composition, and a portion was ejected into space. Some of the material survived to form an orbiting moon. Outgassing and volcanic activity produced the primordial atmosphere. Condensing water vapor, augmented by ice delivered from comets, produced the oceans.As the surface continually reshaped itself over hundreds of millions of years, continents formed and broke apart. They migrated across the surface, occasionally combining to form a supercontinent. Roughly 750 million years ago, the earliest-known supercontinent Rodinia, began to break apart. The continents later recombined to form Pannotia, 600 to 540 million years ago, then finally Pangaea, which broke apart 180 million years ago.The present pattern of ice ages began about 40 million years ago, then intensified at the end of the Pliocene. The polar regions have since undergone repeated cycles of glaciation and thaw, repeating every 40,000–100,000 years. The last glacial period of the current ice age ended about 10,000 years ago.