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Chapter 2
Chapter 2

... alternating magnetization parallel to the mid-oceanic ridges. This is evidence for continuous formation of new rock at these ridges. As new rock forms, older rock is pushed farther away from the ridge, producing these patterns in the rock. ...
Unit 3: Plate Tectonics Slideshow REGENTS
Unit 3: Plate Tectonics Slideshow REGENTS

... 2. Heat leftover from Earth’s formation and produced by radioactive decay creates DENSITY differences in the mantle. 3. This causes the fluid mantle to flow. 4. The flow of mantle material pulls on the crust above it…like a leaf on a stream ...
Exam 1
Exam 1

... b. False 22. Which of the following is characteristic of oceanic-oceanic convergent plate boundaries? a. volcanic island arcs b. andesitic volcanoes c. mid-ocean ridges d. fracture zones 23. The continental masses are often more than three billion years old while seafloor is rarely older than 200 mi ...
Study Guide Key-Layers of the Earth Continental Drift
Study Guide Key-Layers of the Earth Continental Drift

... c) Mountain Ranges and coal beds -Mountain ranges of similar size and rock content are found on different continents (sometimes coal beds match) d) Paleoclimatic - ancient climate evidence (ex: warm climate once existed in Antarctica; fossils tropical plants were found here) e) Paleomagnetism – on t ...
Plate Tectonic Model Rubric
Plate Tectonic Model Rubric

... Concept Model Relating to Physical Characteristics of Earth and Seafloor Topic: Types of plate boundaries, tectonic plates and their movement, Pangaea and Continental Drift Theory, Layers of the Earth, Seafloor formation, Parts of the Ocean floor, Theory of Plate Tectonics ...
File
File

... • As Eurasia is pushed from Mid-Atlantic Ridge, – It pressed against and subsided under the crust which make up the floor of the Pacific Ocean – Constant rubbing of both the plates melts some rocks, magma forms and erupts out forming the ...
Geological mapping and geochronology of the Kaaimans Group
Geological mapping and geochronology of the Kaaimans Group

... outcrop along the western and south-eastern parts of South Africa, which represent tectonic windows that allow testing of these different paleogeographic models. Metasediments and intrusives (syn-tectonic granite and mafic dykes) of one of these terranes, the Kaaimans Group outcrop along the coast s ...
Plate motions in the Alpine region and their correlation to
Plate motions in the Alpine region and their correlation to

... to the same spreading axis, offset by a major left-lateral transform fault between Iberia (part of Laurasia) and Africa (part of Gondwana). Fig. 3 ("middle" Cretaceous): The second stage in the evolution of the Atlantic ocean is the separation of Iberia by protrusion of the Atlantic ocean to the nor ...
MS1_PNT_Geologyppt_V01
MS1_PNT_Geologyppt_V01

... Pangaea broke up with part of the continent drifting north and part south. 1) The northern part split to form the North Atlantic Ocean 208146 million years ago (mya). 2) The South Atlantic and Indian oceans began to form 146-65 mya. 3) The continents continue to drift. Today the oceans are still cha ...
responses to questions accompanying selected figures
responses to questions accompanying selected figures

... Discuss the conditions that account for the presence of evaporites in the Gulf Coast and how they are related to petroleum traps in overlying cretaceous and cenozoic strata. Discuss what is meant by the term accretionary tectonics. Define the accretionary tectonics terms exotic terrane, obduction ...
Chapter 14 Resource: Plate Tectonics
Chapter 14 Resource: Plate Tectonics

... c. convection current b. convergent boundary d. conduction current 9. Oceanic plates are pushed down into the upper mantle in ______. a. convection currents c. strike-slip faults b. subduction zones d. divergent boundaries 10. The hypothesis that continents have moved slowly to their current locatio ...
Slide 1 - MisterSyracuse.com
Slide 1 - MisterSyracuse.com

... of boundary in the Atlantic Ocean between Africa and South America? What feature is being formed? ...
DOC - Northwest Creation Network
DOC - Northwest Creation Network

... Description: The talk first discusses what the Bible says about how the Floodwater drained from off the continents. Then geological evidence for parts of the Earth’s crust rising and parts descending to drain the Floodwater is presented. Geological evidence of sheet currents flowing off the continen ...
Plate Tectonics
Plate Tectonics

... Called this supercontinent Pangea, Greek for “all Earth” 245 Million years ago Split again – Laurasia & Gondwana 180 million years ago ...
2PlateTectonicsPowerPoint4
2PlateTectonicsPowerPoint4

... – Molten material cools and forms new crust. – Old ocean floor crust is pulled away-to make room for newly formed floor. – Sea floor slowly spreads apart. ...
Chapter 23 The Geology of the Mesozoic Era
Chapter 23 The Geology of the Mesozoic Era

... America occurred in the ___________ _______ that formed inland from the orogenic belt. 59. River channels, floodplains and lakes located on an alluvial plain are the depositional environments characteristic of the __________ _________ of late Triassic age in the Four Corners area. 60. The eolian dep ...
Section 17.3 Theory of Plate Tectonics
Section 17.3 Theory of Plate Tectonics

... 6. What evidence suggests that Africa & India were once closer to the South Pole? Bellringer #7 1. How will lithospheric plates that are directly above a rising current move?  Together or apart? 2. How will a plate above a sinking current move?  Together or apart? 3. Use ONE word to describe the ...
U4-T1.1-Wegeners Continental Drift Theory
U4-T1.1-Wegeners Continental Drift Theory

... 1) 225 Million years ago, supercontinent called Pangaea. 2) 200 Million years ago, supercontinent split to form two main land masses. Laurasia in the north and Gondwanaland in the south. 3) Laurasia consisted of; Asia, Europe, and North America. 4) Gondwanaland consisted of; Africa, Australia, Antar ...
Unit R072/01 - How scientific ideas have developed - Insert
Unit R072/01 - How scientific ideas have developed - Insert

... and then check whether the lines of print ran smoothly across. If they do, there is nothing left but to conclude that the pieces were in fact joined in this way.” Wegener thought that all the continents had been joined in a super-continent about 300 million years ago. He called the super-continent P ...
The Dynamic Earth Name
The Dynamic Earth Name

... 1) What started a revolution in the Earth Sciences? When was this? 2) How are people at the mercy of plate tectonics? 3) What volcano and where is it located is in the picture at the bottom of the page? 4) CLICK THE RIGHT ARROW>>>>>> 5) What is a plate? 6) What does tectonics mean? 7) In a couple of ...
Kump_Ch07_TH - Camosun College
Kump_Ch07_TH - Camosun College

... • Thick fill or unconsolidated sediment amplifies ground motion due to surface waves: local geology & proximity both affect amplitude • More ground motion, more & infrastructure building damage ...
Earth Science Chapter 17: Plate Tectonics
Earth Science Chapter 17: Plate Tectonics

... Theory of Plate Tectonics • Plate tectonics is the theory that describes how tectonic plates move and shape Earth’s surface. • They move in different directions and at different rates relative to one another, and they interact with one another at their boundaries. ...
6. geology - Discovering Antarctica
6. geology - Discovering Antarctica

... • Aspects of natural environments become resources, when they are appraised as having value for human needs. These needs can be related to basic human requirements (e.g. food, comfort and shelter), or to the desire for cultural satisfaction (that is, they relate to values, aspirations or spiritual w ...
Earth Science - Faustina Academy
Earth Science - Faustina Academy

... Believed the island drifted from tropical to arctic region Found glacial deposits in places like Africa & India, but how could glaciers be on these continents? Thought they had once been near South Pole ...
Key concepts
Key concepts

... -know how pressure and temperature change as you move through the layers of the earth and their effects on the behavior of rocks -know the internal source of heat inside the earth and how heat moves by conduction or convection -know how old the earth is -be able to describe Wegener’s theory of conti ...
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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.
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