The plate tectonic story: a scientific jigsaw
... 100 years ago suggesting that the continents had drifted apart everyone thought he was mad. He wasn’t the first person to notice that the coastlines looked similar. Even Francis Bacon in 16th Century had written about it. But Alfred was the first person to put forward a lot of scientific evidence th ...
... 100 years ago suggesting that the continents had drifted apart everyone thought he was mad. He wasn’t the first person to notice that the coastlines looked similar. Even Francis Bacon in 16th Century had written about it. But Alfred was the first person to put forward a lot of scientific evidence th ...
Lecture #1
... plates slide past each other. – Mountain ranges pushed up at the margins of colliding plates. • When an oceanic plate collides with a continental landmass, the continental plate will ride up over the seafloor and the oceanic plate will subduct down into the mantle where it melts. –Deep ocean trenche ...
... plates slide past each other. – Mountain ranges pushed up at the margins of colliding plates. • When an oceanic plate collides with a continental landmass, the continental plate will ride up over the seafloor and the oceanic plate will subduct down into the mantle where it melts. –Deep ocean trenche ...
la teoria della deriva dei continenti e della tettonica a zolle
... •The Earth was born 4.6 billions of years ago, after the big Bang . In the beginning it was an incandescent globe. ...
... •The Earth was born 4.6 billions of years ago, after the big Bang . In the beginning it was an incandescent globe. ...
Changing Earth
... the formation of the Atlantic Ocean, the similarity between invertebrate fossils on the two sides of the ocean decreased. Here you’re seeing the Simpson coefficient (a similarity index) comparing the fossils on the American side to those on the African side. Note that the similarity goes down with i ...
... the formation of the Atlantic Ocean, the similarity between invertebrate fossils on the two sides of the ocean decreased. Here you’re seeing the Simpson coefficient (a similarity index) comparing the fossils on the American side to those on the African side. Note that the similarity goes down with i ...
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... II. The Archean cratonic elements welded together to form a large supercontinent during the early Proterozoic. A. Laurentia - North American cratron 1. welding occurred along belts of crustal compression, mountain building, and metamorphism, called an orogen 2. completed by about 1.7 billion years a ...
... II. The Archean cratonic elements welded together to form a large supercontinent during the early Proterozoic. A. Laurentia - North American cratron 1. welding occurred along belts of crustal compression, mountain building, and metamorphism, called an orogen 2. completed by about 1.7 billion years a ...
Theory of Plate Tectonics
... sea-floor spreading. This theory was formed as new information was learned about the nature of the ocean floor, Earth’s ancient magnetism patterns, the location of volcanoes and earthquakes, the flow of heat from Earth’s interior, and the worldwide distribution of plant and animal fossils. Earth’s o ...
... sea-floor spreading. This theory was formed as new information was learned about the nature of the ocean floor, Earth’s ancient magnetism patterns, the location of volcanoes and earthquakes, the flow of heat from Earth’s interior, and the worldwide distribution of plant and animal fossils. Earth’s o ...
Appalachian Mountains - Brief Geologic History The Earth is
... Then, about 540 million years ago, the supercontinent split into pieces that drifted away from each other. Seawater spread into low areas between crustal plates and,in time, formed new oceans. A shallow sea covered most of what is now the United States. CONTINENTAL COLLISION: About 470 million years ...
... Then, about 540 million years ago, the supercontinent split into pieces that drifted away from each other. Seawater spread into low areas between crustal plates and,in time, formed new oceans. A shallow sea covered most of what is now the United States. CONTINENTAL COLLISION: About 470 million years ...
Quaternary Period
... Cretaceous Period dry up, exposing large land areas in North America and Eurasia. Australia begins to separate from Antarctica, and Greenland splits from North America. A remnant Tethys Sea persists in the equatorial region. ...
... Cretaceous Period dry up, exposing large land areas in North America and Eurasia. Australia begins to separate from Antarctica, and Greenland splits from North America. A remnant Tethys Sea persists in the equatorial region. ...
PLATE TECTONICS
... • Alfred Wegener’s theory of continental drift, published in 1915, claimed the continents once formed a single supercontinent that broke apart, setting the separate landmasses adrift. Wegener observed that 1) the coastlines of some continents fit like a jigsaw puzzle, and 2) similar fossils are fou ...
... • Alfred Wegener’s theory of continental drift, published in 1915, claimed the continents once formed a single supercontinent that broke apart, setting the separate landmasses adrift. Wegener observed that 1) the coastlines of some continents fit like a jigsaw puzzle, and 2) similar fossils are fou ...
plate - PAMS-Doyle
... Continental Drift It was widely disputed, 30 years after his death, enough evidence was collected to support his theory ...
... Continental Drift It was widely disputed, 30 years after his death, enough evidence was collected to support his theory ...
9 Geography Investigating Australia`s Physical Environments Term 1
... Many fossils have been found which link continents together and support the idea that the continents were once joined together. They show that a plant or animal lived on the edge of two (or more) continents. This shows that the two areas would have had to have a similar climate (and so a similar lat ...
... Many fossils have been found which link continents together and support the idea that the continents were once joined together. They show that a plant or animal lived on the edge of two (or more) continents. This shows that the two areas would have had to have a similar climate (and so a similar lat ...
Early Earth Quiz Prep
... _____________________________________________________________ 2. When the Americas bump into Asia in a few hundred million years _____________________________________________________________ 3. True or false (circle) – Continents keep changing, but never disappear? Vocabulary; Know the meaning of ea ...
... _____________________________________________________________ 2. When the Americas bump into Asia in a few hundred million years _____________________________________________________________ 3. True or false (circle) – Continents keep changing, but never disappear? Vocabulary; Know the meaning of ea ...
Ice Age: Continental Drift
... landmass of Pangaea. The land was surrounded by one global ocean, called Panthalassa. ...
... landmass of Pangaea. The land was surrounded by one global ocean, called Panthalassa. ...
Social Studies Assessment 1/14 Unit 2 equator
... western hemispheres- vertical longitude- lines that run north and south on a globe from pole to pole latitude- lines that run east to west around a globe continent- one of the seven large land areas on earth North America, South America, Europe, Asia, Africa, Australia, Antarctica hemisphere- half o ...
... western hemispheres- vertical longitude- lines that run north and south on a globe from pole to pole latitude- lines that run east to west around a globe continent- one of the seven large land areas on earth North America, South America, Europe, Asia, Africa, Australia, Antarctica hemisphere- half o ...
PAST EXAM QUESTIONS
... 3. Which of the following is NOT considered to be a part of Gondwana? A. Asia B. Africa C. India D. Australia E. Antarctica 3. Which of the following continents does NOT show evidence of an ice age during the Carboniferous because it was part of Laurasia in northern Pangea and so was near to the eq ...
... 3. Which of the following is NOT considered to be a part of Gondwana? A. Asia B. Africa C. India D. Australia E. Antarctica 3. Which of the following continents does NOT show evidence of an ice age during the Carboniferous because it was part of Laurasia in northern Pangea and so was near to the eq ...
Word
... Although Pangea’s southern Gondwana continents contain evidence of an ice age during the Carboniferous Period, there are no equivalent aged glacial deposits in the northern Laurasia continents because: A. Gondwana was near the south pole in the Carboniferous, but Laurasia was near the equator B. Lau ...
... Although Pangea’s southern Gondwana continents contain evidence of an ice age during the Carboniferous Period, there are no equivalent aged glacial deposits in the northern Laurasia continents because: A. Gondwana was near the south pole in the Carboniferous, but Laurasia was near the equator B. Lau ...
Session 3 Powerpoint
... Proponent of sea-floor spreading. Used data collected during WW II in Atlantic Ocean. ...
... Proponent of sea-floor spreading. Used data collected during WW II in Atlantic Ocean. ...
8.4 Plate Movement and Continental Growth
... that in the geological past two older plates collided to form these mountains. Such examples are Ural Mountains, which “welds” Europe with Asia, Appalachian Mountains in SE of the United States, The Great Dividing Range in Eastern Australia, etc. ...
... that in the geological past two older plates collided to form these mountains. Such examples are Ural Mountains, which “welds” Europe with Asia, Appalachian Mountains in SE of the United States, The Great Dividing Range in Eastern Australia, etc. ...
The Sea Floor
... Alfred Wegher suggested the continents were not always on their present positions. Continental Drift 200 mya, A single landmass called Pangea broke up. ...
... Alfred Wegher suggested the continents were not always on their present positions. Continental Drift 200 mya, A single landmass called Pangea broke up. ...
Tectonic Plate Theory PowerPoint Study Guide
... Pangea Pangea was the supercontinent from which all continents have split. In 1915 Wegener proposed Earth’s continents looked this way about 225 million years ago. The theory of continental drift was used to explain the current positions of the continents. Wegener could not come up with a m ...
... Pangea Pangea was the supercontinent from which all continents have split. In 1915 Wegener proposed Earth’s continents looked this way about 225 million years ago. The theory of continental drift was used to explain the current positions of the continents. Wegener could not come up with a m ...
Plate Tectonics
... He suggested that all of the _________continents___________ were once ___joined_________ together to form a _______supercontinent____ Pangaea Wegener called this super landmass _______Pangaea__________ and believed that it broke apart ___200 million____ years ago Pangaea means “_______all land ...
... He suggested that all of the _________continents___________ were once ___joined_________ together to form a _______supercontinent____ Pangaea Wegener called this super landmass _______Pangaea__________ and believed that it broke apart ___200 million____ years ago Pangaea means “_______all land ...
key
... 1. 200 million years ago, all the continents were one called Pangaea. Evidence is continents fitting together, fossils of same organism on two different continents, similar mountain ranges on diff. continents. 2. Seismic waves tell us that the inside of the Earth is made up of layers. 3. Continental ...
... 1. 200 million years ago, all the continents were one called Pangaea. Evidence is continents fitting together, fossils of same organism on two different continents, similar mountain ranges on diff. continents. 2. Seismic waves tell us that the inside of the Earth is made up of layers. 3. Continental ...
Unit 4 Chapter 10
... together and have since moved away from each other. According to Wegener, the super continent started breaking up about 200 million years ago. ...
... together and have since moved away from each other. According to Wegener, the super continent started breaking up about 200 million years ago. ...
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.