8 - MsWold
... had separated into separate continents, which drifted apart. •Based his hypothesis on __________________and _______________________ on separate continents •Also matching ___________________________ Later discoveries supported the idea that the continents had _______________, but demonstrated that th ...
... had separated into separate continents, which drifted apart. •Based his hypothesis on __________________and _______________________ on separate continents •Also matching ___________________________ Later discoveries supported the idea that the continents had _______________, but demonstrated that th ...
Sea Floor Structures
... At mid-ocean ridges, two tectonic plates are moving apart. This leaves a depression known as the central rift valley. The floor of the rift valley is covered with crevices and cracks. Seawater leaks down into these fractures and is heated by the very high temperatures of the mantle. The heated water ...
... At mid-ocean ridges, two tectonic plates are moving apart. This leaves a depression known as the central rift valley. The floor of the rift valley is covered with crevices and cracks. Seawater leaks down into these fractures and is heated by the very high temperatures of the mantle. The heated water ...
Geologic History - Teacher Friendly Guides
... highly developed. We humans don’t come into the picture until the last 2 million years. To get some perspective on this, if the entire geologic time scale were reduced to 24 hours, we wouldn’t come onto the stage until 2 seconds before midnight! The Earth is dynamic, consisting of constantly moving ...
... highly developed. We humans don’t come into the picture until the last 2 million years. To get some perspective on this, if the entire geologic time scale were reduced to 24 hours, we wouldn’t come onto the stage until 2 seconds before midnight! The Earth is dynamic, consisting of constantly moving ...
Plate boudaries II
... granite. Over time it volumetrically overwhelms the amount of granite in the rift, and you have primarily just mafic igneous crust. • This crust subsides (Pratt isostacy) as a function of its density, which means that it floats lower in the mantle, topographically lower than continental crust. • By ...
... granite. Over time it volumetrically overwhelms the amount of granite in the rift, and you have primarily just mafic igneous crust. • This crust subsides (Pratt isostacy) as a function of its density, which means that it floats lower in the mantle, topographically lower than continental crust. • By ...
The Historical Background
... that for several hundred million years during the late Paleozoic and Mesozoic eras (200 million to 300 million years ago), the continents were united into a supercontinent that he labeled Pangea—all Earth. Continental drift would also explain paleoclimate change, as continents drifted through differ ...
... that for several hundred million years during the late Paleozoic and Mesozoic eras (200 million to 300 million years ago), the continents were united into a supercontinent that he labeled Pangea—all Earth. Continental drift would also explain paleoclimate change, as continents drifted through differ ...
Quiz 4: Transform faults and Polar Wander (Ch. 4
... 2. Explain why ocean ridge earthquake have, in general, shallower epicenters than earthquakes on the adjacent transform faults. Higher heat flow - thinner brittle layer/seismogenic zone, most of crust is ductile/plastic. ...
... 2. Explain why ocean ridge earthquake have, in general, shallower epicenters than earthquakes on the adjacent transform faults. Higher heat flow - thinner brittle layer/seismogenic zone, most of crust is ductile/plastic. ...
The Theory of Plate Tectonics
... material deep within the Earth rises while cooler material near the surface sinks. ◦ This is what causes tectonic plates to move around. ...
... material deep within the Earth rises while cooler material near the surface sinks. ◦ This is what causes tectonic plates to move around. ...
Review for Science 10 Provincial Exam
... Tectonic plates may contain continent and ocean crust or only ocean crust. For example, the North American Plate contains the continent of North America and about half of the ocean crust under the Atlantic Ocean. The Juan de Fuca Plate and the Nazca Plate contain only ocean crust. There are 7 large ...
... Tectonic plates may contain continent and ocean crust or only ocean crust. For example, the North American Plate contains the continent of North America and about half of the ocean crust under the Atlantic Ocean. The Juan de Fuca Plate and the Nazca Plate contain only ocean crust. There are 7 large ...
Pangaea to Plate Tectonics Report
... 500,000,000 years ago [1 billion years ago based on current radiometric dating] primitive marine vegetable life was well established on Urantia. Greenland and the arctic land mass, together with North and South America, were beginning their long and slow westward drift. Africa moved slightly south, ...
... 500,000,000 years ago [1 billion years ago based on current radiometric dating] primitive marine vegetable life was well established on Urantia. Greenland and the arctic land mass, together with North and South America, were beginning their long and slow westward drift. Africa moved slightly south, ...
Plate Tectonics
... Plate Tectonics • The Earth’s crust is divided into 12 major plates which are moved in various directions. • This plate motion causes them to collide, pull ...
... Plate Tectonics • The Earth’s crust is divided into 12 major plates which are moved in various directions. • This plate motion causes them to collide, pull ...
Lesson 4 – A Deeper Look at Plate Movement - Project 3D-VIEW
... on different types of matter. The result was the formation of four major layers of the Earth: crust, mantle, outer core and inner core. The Crust: The top layer of the Earth is the crust. The crust includes the solid material that makes up the continents and the ocean floor. The crust is thin, cool ...
... on different types of matter. The result was the formation of four major layers of the Earth: crust, mantle, outer core and inner core. The Crust: The top layer of the Earth is the crust. The crust includes the solid material that makes up the continents and the ocean floor. The crust is thin, cool ...
Oceanic Crust
... • the night high tide is rising, swirling with a confused rush of waters against the rocks below …. • Once this rocky coast beneath me was a plain of sand; • then the sea rose and found a new shore line. • And again in some shadowy future the surf will have ground these rocks to sand and will have r ...
... • the night high tide is rising, swirling with a confused rush of waters against the rocks below …. • Once this rocky coast beneath me was a plain of sand; • then the sea rose and found a new shore line. • And again in some shadowy future the surf will have ground these rocks to sand and will have r ...
SUBDUCTION
... Initiated as oceanic - continent subduction. Continental crust on the subducted plate is too light to be subducted. Consequently it crashes into the other continental crust, Squeezing and folding the sediments between them to produce a high mountain range. ...
... Initiated as oceanic - continent subduction. Continental crust on the subducted plate is too light to be subducted. Consequently it crashes into the other continental crust, Squeezing and folding the sediments between them to produce a high mountain range. ...
Ch 17-19 Study Guide with embedded grid
... What is magma? ________________________________________________________ What is the gas and silica content of the 3 types of magma? How explosive is each? Where are each type found? (Study the chart.) a. Basaltic _______________/___________________/_____________________ b. Andesitic ______________/_ ...
... What is magma? ________________________________________________________ What is the gas and silica content of the 3 types of magma? How explosive is each? Where are each type found? (Study the chart.) a. Basaltic _______________/___________________/_____________________ b. Andesitic ______________/_ ...
NATURAL DISASTERS OF THE EARTH Earthquakes East
... Earthquakes East of the Rockies Most earthquakes occur near plate boundaries in places such as California and Japan. However, areas distant from plate boundaries are not immune, A team of seismologists estimated that the probability of a damaging earthquake east of the Rocky Mountains during the nex ...
... Earthquakes East of the Rockies Most earthquakes occur near plate boundaries in places such as California and Japan. However, areas distant from plate boundaries are not immune, A team of seismologists estimated that the probability of a damaging earthquake east of the Rocky Mountains during the nex ...
23.5 The Restless Oceans
... In general, currents of warm water flow away from the equator along the east side of continents. Currents of cold water flow away from the polar regions along the west side of continents. ...
... In general, currents of warm water flow away from the equator along the east side of continents. Currents of cold water flow away from the polar regions along the west side of continents. ...
Map 2
... 'Old Red Sandstone' deposited among semi-arid mountains by large river systems. Subsiding basin in SW receives vast thickness of sediment. Sandstone & shale Ocean basin: Sand and mud deposited in narrow ocean basin and continental margins Sandstone & shale as Iapetus closes. Ocean depths & Ring of F ...
... 'Old Red Sandstone' deposited among semi-arid mountains by large river systems. Subsiding basin in SW receives vast thickness of sediment. Sandstone & shale Ocean basin: Sand and mud deposited in narrow ocean basin and continental margins Sandstone & shale as Iapetus closes. Ocean depths & Ring of F ...
SXR339 Ancient Mountains ISBN0749258470
... have been used to date events such as the crystallization of metamorphic and igneous rocks. With the advent of new analytical methods it is now possible to date the crystallization of individual minerals (or even parts of minerals) such as zircon or garnet, to a precision of one or two million years ...
... have been used to date events such as the crystallization of metamorphic and igneous rocks. With the advent of new analytical methods it is now possible to date the crystallization of individual minerals (or even parts of minerals) such as zircon or garnet, to a precision of one or two million years ...
The Restless Earth
... Ocean trenches form at destructive subduction margins (oceanic plate sinks beneath continental plate e.g. Pacific Plate and North American Plate) Young fold mountains form at both destructive subduction margins and destructive collision margins (where two continental plates collide e.g. African plat ...
... Ocean trenches form at destructive subduction margins (oceanic plate sinks beneath continental plate e.g. Pacific Plate and North American Plate) Young fold mountains form at both destructive subduction margins and destructive collision margins (where two continental plates collide e.g. African plat ...
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 ...
document
... an atmosphere, oceans and continents began to form. During Precambrian Time (4.6 billion – 544 million years ago): very few fossils remain from this time Precambrian rocks have been buried, causing fossils to be changed by heat and pressure most Precambrian organisms lacked hard parts Earliest ...
... an atmosphere, oceans and continents began to form. During Precambrian Time (4.6 billion – 544 million years ago): very few fossils remain from this time Precambrian rocks have been buried, causing fossils to be changed by heat and pressure most Precambrian organisms lacked hard parts Earliest ...
Clouard_new_scientis..
... moving west at a faster rate than the southern half for the past 7 million years. North of the equator, the plate is moving relatively quickly toward the Mariana trench, where the ocean crust is disappearing into a subduction zone. Meanwhile, in the southern hemisphere, the Tonga trench is consuming ...
... moving west at a faster rate than the southern half for the past 7 million years. North of the equator, the plate is moving relatively quickly toward the Mariana trench, where the ocean crust is disappearing into a subduction zone. Meanwhile, in the southern hemisphere, the Tonga trench is consuming ...
Pacific Ocean - University of Hawaii
... diagram here demonstrates how these parameters will vary with eruption type. For more detailed information on these parameters, click on image. Note that hydrovolcanic eruptions (above dashed line) are generally the most explosive, but do not necessarily generate the highest eruption columns. ...
... diagram here demonstrates how these parameters will vary with eruption type. For more detailed information on these parameters, click on image. Note that hydrovolcanic eruptions (above dashed line) are generally the most explosive, but do not necessarily generate the highest eruption columns. ...
Pangaea
Pangaea or Pangea (/pænˈdʒiːə/) was a supercontinent that existed during the late Paleozoic and early Mesozoic eras. It assembled from earlier continental units approximately 300 million years ago, and it began to break apart about 175 million years ago. In contrast to the present Earth and its distribution of continental mass, much of Pangaea was in the southern hemisphere and surrounded by a super ocean, Panthalassa. Pangaea was the last supercontinent to have existed and the first to be reconstructed by geologists.