Document
... What is the sequence of discoveries from ~1945-1965 that led to plate tectonics? How did seismology support the interpretation of three types of plate boundaries? How did prevailing geological ideas influence people's reactions to the new global tectonics? How did the new global tectonics influence ...
... What is the sequence of discoveries from ~1945-1965 that led to plate tectonics? How did seismology support the interpretation of three types of plate boundaries? How did prevailing geological ideas influence people's reactions to the new global tectonics? How did the new global tectonics influence ...
How can you model Earth movements?
... The Earth’s surface is made up of large _________________ of rock. These float across the liquid _________________like rafts. Large scale movements of the Earth’s crust can cause ______________ ranges to form very slowly over millions of years. These replace older mountain ranges worn down by ______ ...
... The Earth’s surface is made up of large _________________ of rock. These float across the liquid _________________like rafts. Large scale movements of the Earth’s crust can cause ______________ ranges to form very slowly over millions of years. These replace older mountain ranges worn down by ______ ...
Chap7Sect2 -Cont Drift and Sea-floor
... (Drifting Continents) Objectives: 1. What is continental drift? 2. How do landforms, fossils, and climate changes show evidence of the changing surface of the Earth? 3. Explain how sea-floor spreading provides a way for continents to move. ...
... (Drifting Continents) Objectives: 1. What is continental drift? 2. How do landforms, fossils, and climate changes show evidence of the changing surface of the Earth? 3. Explain how sea-floor spreading provides a way for continents to move. ...
Magnetic striping and polar reversals (See CD Tect ppt)
... the continents had drifted but he couldn't explain how they drifted. The old theory before this time was the "Contraction theory" which suggested that the planet was once a molten ball and in the process of cooling the surface cracked and folded up on itself. Others thought that places like the Gran ...
... the continents had drifted but he couldn't explain how they drifted. The old theory before this time was the "Contraction theory" which suggested that the planet was once a molten ball and in the process of cooling the surface cracked and folded up on itself. Others thought that places like the Gran ...
2 Precambrian Geology Homework a
... 14) The largest belt of folded rocks indicating Proterozoic continental collisions is called the: a) Grenville Orogen. b) Trans-Hudson Orogen.. c) Mazatal Orogen. d) Wopmay Orogen 15) The last major Proterozoic collision before assembly of Rodinia is recorded by rocks in the: a) Grenville Orogen.. ...
... 14) The largest belt of folded rocks indicating Proterozoic continental collisions is called the: a) Grenville Orogen. b) Trans-Hudson Orogen.. c) Mazatal Orogen. d) Wopmay Orogen 15) The last major Proterozoic collision before assembly of Rodinia is recorded by rocks in the: a) Grenville Orogen.. ...
Plate Tectonics Intro- Theory and History
... Ocean was the scar left behind when the Moon pulled away from the Earth. After this happened, the continents moved to create a balanced planet. ...
... Ocean was the scar left behind when the Moon pulled away from the Earth. After this happened, the continents moved to create a balanced planet. ...
Exploring Geologic Time
... 85% of Earth’s history intense volcanic activity; oceans form; meteorite bombardment atmosphere develops from primitive through outgases from volcanoes to one with free oxygen (and ozone layer) life begins with unicellular organisms (blue-green algae and bacteria) and evolves to multi-cell o ...
... 85% of Earth’s history intense volcanic activity; oceans form; meteorite bombardment atmosphere develops from primitive through outgases from volcanoes to one with free oxygen (and ozone layer) life begins with unicellular organisms (blue-green algae and bacteria) and evolves to multi-cell o ...
ppt: Plate Tectonics Intro- Theory and History
... Ocean was the scar left behind when the Moon pulled away from the Earth. After this happened, the continents moved to create a balanced planet. ...
... Ocean was the scar left behind when the Moon pulled away from the Earth. After this happened, the continents moved to create a balanced planet. ...
Review sheet – Oceanography – first midterm
... 1. What is the relationship of the various features of the continental margin to the transition from continental crust to oceanic crust? 2. How can we observe what the surface of the ocean floor looks like when it is so deep? 3. What is the typical depth of the ocean floor? 4. What is the difference ...
... 1. What is the relationship of the various features of the continental margin to the transition from continental crust to oceanic crust? 2. How can we observe what the surface of the ocean floor looks like when it is so deep? 3. What is the typical depth of the ocean floor? 4. What is the difference ...
and Wilson cycle tectonics
... 2) Super Continent cyclisity (?) and Wilson cycle tectonics Does the earth’s continental lithosphere go through stages of assembly and disintegration to produce periods when most continents are united into one, a Supercontinent?. ...
... 2) Super Continent cyclisity (?) and Wilson cycle tectonics Does the earth’s continental lithosphere go through stages of assembly and disintegration to produce periods when most continents are united into one, a Supercontinent?. ...
8.2: Continents change position over time
... Greenland today is mostly covered in ice, yet tropical plant fossils are found there South Africa is warm, but rocks were deeply scratched by ice sheets ...
... Greenland today is mostly covered in ice, yet tropical plant fossils are found there South Africa is warm, but rocks were deeply scratched by ice sheets ...
File
... __________________________much deeper than the Grand Canyon were also discovered. ____________________________________were used to show that the ocean floor had bands of _______________________________(a volcanic rock rich in iron) with alternating magnetic lines. As rock rose from inside the Earth, ...
... __________________________much deeper than the Grand Canyon were also discovered. ____________________________________were used to show that the ocean floor had bands of _______________________________(a volcanic rock rich in iron) with alternating magnetic lines. As rock rose from inside the Earth, ...
Which of these describes the lithosphere and the
... proposed two ideas that are known as continental drift Theory – Earth’s continents were once joined in a single large landmass called Pangaea that broke apart millions of years ago. – Continents have drifted to their current location. ...
... proposed two ideas that are known as continental drift Theory – Earth’s continents were once joined in a single large landmass called Pangaea that broke apart millions of years ago. – Continents have drifted to their current location. ...
Plate Tectonics Test Review
... • Continental Drift: Wegener’s idea that the continents slowly moved over Earth’s surfaces causing Pangaea to break apart ...
... • Continental Drift: Wegener’s idea that the continents slowly moved over Earth’s surfaces causing Pangaea to break apart ...
and Wilson cycle tectonics
... Wilson used his reference background, in the North Atlantic realm and the Appalachian - Caledonian orogenic belts on both sides of the Atlantic ocean to formulate a hypothesis saying that the building of mountain belts have a close relationship to the opening and closure of oceans with oceanic litho ...
... Wilson used his reference background, in the North Atlantic realm and the Appalachian - Caledonian orogenic belts on both sides of the Atlantic ocean to formulate a hypothesis saying that the building of mountain belts have a close relationship to the opening and closure of oceans with oceanic litho ...
Earth`s Moving Plates: A Look Back
... The Breakup of a Supercontinent After many scientists had gathered evidence, Alfred Wegener, a German meteorologist, proposed in 1912 the theory of continental drift. According to this theory, the continents were once united in one “supercontinent.” Wegener named this continent Pangaea. He claimed t ...
... The Breakup of a Supercontinent After many scientists had gathered evidence, Alfred Wegener, a German meteorologist, proposed in 1912 the theory of continental drift. According to this theory, the continents were once united in one “supercontinent.” Wegener named this continent Pangaea. He claimed t ...
No Slide Title
... • Such a configuration exerted tremendous influence on the world's climate – resulted in generally arid conditions over large parts of Pangaea's interior ...
... • Such a configuration exerted tremendous influence on the world's climate – resulted in generally arid conditions over large parts of Pangaea's interior ...
No Slide Title
... The continents were all connected at one time Supercontinent was called Pangea Pangea broke apart up into two continents call Laurasia and Gondwanaland Continents are still moving today ...
... The continents were all connected at one time Supercontinent was called Pangea Pangea broke apart up into two continents call Laurasia and Gondwanaland Continents are still moving today ...
Plate Tectonics Notes
... Wegener’s theory was supported by Harry Hess. Hess was the scientist that discovered the sea floor was spreading. ...
... Wegener’s theory was supported by Harry Hess. Hess was the scientist that discovered the sea floor was spreading. ...
4.1 & 4.2 Plate Tectonics
... • Where is the newest (youngest) oceanic rock found in the diagram? • Where is the oldest oceanic rock found in the diagram? A ...
... • Where is the newest (youngest) oceanic rock found in the diagram? • Where is the oldest oceanic rock found in the diagram? A ...
INSIDE THE EARTH
... the rocks get older as you move further from the ridge. EQ6: What happens at deep-ocean trenches? Subduction occurs at deep-ocean trenches. This is where the sea floor goes back into the mantle. ...
... the rocks get older as you move further from the ridge. EQ6: What happens at deep-ocean trenches? Subduction occurs at deep-ocean trenches. This is where the sea floor goes back into the mantle. ...
Supercontinent
In geology, a supercontinent is the assembly of most or all of the Earth's continental blocks or cratons to form a single large landmass. However, the definition of a supercontinent can be ambiguous. Many tectonicists such as P.F. Hoffman (1999) use the term ""supercontinent"" to mean ""a clustering of nearly all continents"". This definition leaves room for interpretation when labeling a continental body and is easier to apply to Precambrian times. Using the first definition provided here, Gondwana (aka Gondwanaland) is not considered a supercontinent, because the landmasses of Baltica, Laurentia and Siberia also existed at the same time but physically separate from each other. The landmass of Pangaea is the collective name describing all of these continental masses when they were in a close proximity to one another. This would classify Pangaea as a supercontinent. According to the definition by Rogers and Santosh (2004), a supercontinent does not exist today. Supercontinents have assembled and dispersed multiple times in the geologic past (see table). The positions of continents have been accurately determined back to the early Jurassic. However, beyond 200 Ma, continental positions are much less certain.