Classifying Common Igneous Rocks
... material much like water vapor bubbles through boiling water. When the rock hardens, these bubbles may become trapped to produce holes in the final product like pumice or scoria. The holes tend to make the rock light in weight. As you now know, rocks are composed of minerals or a combination of mine ...
... material much like water vapor bubbles through boiling water. When the rock hardens, these bubbles may become trapped to produce holes in the final product like pumice or scoria. The holes tend to make the rock light in weight. As you now know, rocks are composed of minerals or a combination of mine ...
Plate Tectonics and Deformation of the Crust
... was interested in ancient climates. ► He found glacial deposits that showed that ice sheets covered large areas of the southern hemisphere 220 million-300 million years ago. ► He found scratches and grooves in the bedrock that was carved out by ice, in areas that are now along the equator. ► He knew ...
... was interested in ancient climates. ► He found glacial deposits that showed that ice sheets covered large areas of the southern hemisphere 220 million-300 million years ago. ► He found scratches and grooves in the bedrock that was carved out by ice, in areas that are now along the equator. ► He knew ...
Changes in Earth`s Surface
... • Ultimately: heat transported from core and mantle to surface • Heat transported by convection • Core is ~5,000°C and surface is ~0°C • Where mantle rises: rifting • Where mantle sinks: subduction zones ...
... • Ultimately: heat transported from core and mantle to surface • Heat transported by convection • Core is ~5,000°C and surface is ~0°C • Where mantle rises: rifting • Where mantle sinks: subduction zones ...
File
... Plate tectonics theory states that Earth’s crust in composed of 7 major plates and many smaller plates. These plates move across the hot upper mantle known as the asthenosphere due to convection currents. With all this motion, the plates are bound to crash into each other or move away from each othe ...
... Plate tectonics theory states that Earth’s crust in composed of 7 major plates and many smaller plates. These plates move across the hot upper mantle known as the asthenosphere due to convection currents. With all this motion, the plates are bound to crash into each other or move away from each othe ...
Geological processes in the British Isles
... Unless otherwise stated, this resource is released under the terms of the Creative Commons Licence v4.0 http://creativecommons.org/licenses/by-nc-sa/4.0/deed.en_GB. Within that The Open University interprets this licence in the following way: www.open.edu/openlearn/about-openlearn/frequently-asked-q ...
... Unless otherwise stated, this resource is released under the terms of the Creative Commons Licence v4.0 http://creativecommons.org/licenses/by-nc-sa/4.0/deed.en_GB. Within that The Open University interprets this licence in the following way: www.open.edu/openlearn/about-openlearn/frequently-asked-q ...
Plate Tectonics
... is made of many pieces. They fit side by side like a puzzle. Unlike a puzzle, those pieces move. They push each other. They crash and smash. The pieces are called tectonic plates. There are two types of plates on Earth. Oceanic plates are under the ocean water. Continental plates are under land. ...
... is made of many pieces. They fit side by side like a puzzle. Unlike a puzzle, those pieces move. They push each other. They crash and smash. The pieces are called tectonic plates. There are two types of plates on Earth. Oceanic plates are under the ocean water. Continental plates are under land. ...
Essentials of Oceanography, 11e (Trujillo) Chapter 1 Introduction to
... Essent'l Concept: 1.4 Explain how Earth and the solar system were formed 49) Oceanic crust is primarily: A) basalt. B) carbonate sedimentary rocks. C) clay minerals. D) granite. E) siltstone. Answer: A Diff: 1 Skill: Knowledge Section: 1.4 How Were Earth and the Solar System Formed? Essent'l Concept ...
... Essent'l Concept: 1.4 Explain how Earth and the solar system were formed 49) Oceanic crust is primarily: A) basalt. B) carbonate sedimentary rocks. C) clay minerals. D) granite. E) siltstone. Answer: A Diff: 1 Skill: Knowledge Section: 1.4 How Were Earth and the Solar System Formed? Essent'l Concept ...
Earthquakes
... The New Madrid Fault Zone is part of an ancient plate boundary. In this area, the North American Plate tried to form a divergent plate boundary about 500 million years ago. The splitting stopped before new plates could form. Earthquakes occur because the North American Plate is still "settling down" ...
... The New Madrid Fault Zone is part of an ancient plate boundary. In this area, the North American Plate tried to form a divergent plate boundary about 500 million years ago. The splitting stopped before new plates could form. Earthquakes occur because the North American Plate is still "settling down" ...
view the Lecture Presentation
... Linear increase in age with distance from central ridge. Edge of ocean basin - oldest; ridge proximal youngest. Note: This diagram only depicts the crust, not the entire lithosphere. ...
... Linear increase in age with distance from central ridge. Edge of ocean basin - oldest; ridge proximal youngest. Note: This diagram only depicts the crust, not the entire lithosphere. ...
The Theory of Continental Drift
... An ocean floor pushed toward a land mass will always slide under the land mass. This is because the land mass is more buoyant, or lighter, than the ocean floor. The result is a mountain range. range. ...
... An ocean floor pushed toward a land mass will always slide under the land mass. This is because the land mass is more buoyant, or lighter, than the ocean floor. The result is a mountain range. range. ...
... the commonly assumed value of <5 wt%, will yield plagioclase as a liquidus phase after 57% crystallisation instead of 75%. The initial magnesium number of the bulk LMO also poses important constraints on the crystallisation sequence, especially towards the end of LMO crystallisation (Snyder et al., ...
The Dynamic Crust
... Base your answers to questions 65 and 66 on the map and data table below. The map shows the locations of volcanic islands and seamounts that erupted on the seafloor of the Pacific Plate as it moved northwest over a stationary mantle hotspot beneath the lithosphere. The hotspot is currently under Kil ...
... Base your answers to questions 65 and 66 on the map and data table below. The map shows the locations of volcanic islands and seamounts that erupted on the seafloor of the Pacific Plate as it moved northwest over a stationary mantle hotspot beneath the lithosphere. The hotspot is currently under Kil ...
Earth Interior - homework55.com
... magnetic field as it cools. • The Earth’s magnetic field reverses polarity about every 200,000 years • The process is recorded as magnetic bands in rock, based on the age of the rock. • Symmetrical bands on either side of the Mid Atlantic Ridge suggest that the crust was moving away from the ridge. ...
... magnetic field as it cools. • The Earth’s magnetic field reverses polarity about every 200,000 years • The process is recorded as magnetic bands in rock, based on the age of the rock. • Symmetrical bands on either side of the Mid Atlantic Ridge suggest that the crust was moving away from the ridge. ...
Lesson Sample Part 2
... If melted rock is above ground, it’s called Lava, underground the same rock is Magma. Volcanic Eruptions happens when conditions create Pressure or Forces which move magma and hot Gasses from the earth. This can create Ash, or pulverized rock. It also releases gasses such as steam and possibly some ...
... If melted rock is above ground, it’s called Lava, underground the same rock is Magma. Volcanic Eruptions happens when conditions create Pressure or Forces which move magma and hot Gasses from the earth. This can create Ash, or pulverized rock. It also releases gasses such as steam and possibly some ...
Features of Earthquakes
... The ______________________ of the Earth is the core ad it is a solid, dense material, made mostly of ______________________ with small amounts of nickel, oxygen, silicon, and sulfur. _____________________________ from the layers above causes the inner core to be ________________________. Above ...
... The ______________________ of the Earth is the core ad it is a solid, dense material, made mostly of ______________________ with small amounts of nickel, oxygen, silicon, and sulfur. _____________________________ from the layers above causes the inner core to be ________________________. Above ...
PowerPoint - Cal State LA - Instructional Web Server
... Continental Drift Evidence Researchers noted geographic fit of continents – e.g. Africa and S. America – Atlantic formed by separation of Africa from S. America Seuss, 1885, proposed super continent by studying fossils, rocks, mountains Wegener and Taylor, early 1900’s, proposed continental d ...
... Continental Drift Evidence Researchers noted geographic fit of continents – e.g. Africa and S. America – Atlantic formed by separation of Africa from S. America Seuss, 1885, proposed super continent by studying fossils, rocks, mountains Wegener and Taylor, early 1900’s, proposed continental d ...
Chapter 14 Volcanoes
... • Continental crust has higher silica content • Magma varies in composition (what it’s made of) ...
... • Continental crust has higher silica content • Magma varies in composition (what it’s made of) ...
Using earthquakes to uncover the Earth`s inner secrets
... during the last 1000 years, conceived to illustrate the most seismic prone areas in Italy. In the first section, PC programs and posters introduce the visitors to the Plate Tectonics theory. Here an interactive program working on three desktop PCs illustrates where and when earthquakes and volcanic ...
... during the last 1000 years, conceived to illustrate the most seismic prone areas in Italy. In the first section, PC programs and posters introduce the visitors to the Plate Tectonics theory. Here an interactive program working on three desktop PCs illustrates where and when earthquakes and volcanic ...
Biotic vs. abiotic Earth_ A model for mantle hydration
... parameters such that the present day continental surface area and mantle water concentration can be obtained. Our steady state results show two stable fixed points in a phase plane defined by the fractional continental surface area and the water concentration in the mantle, one of them pertaining to a ...
... parameters such that the present day continental surface area and mantle water concentration can be obtained. Our steady state results show two stable fixed points in a phase plane defined by the fractional continental surface area and the water concentration in the mantle, one of them pertaining to a ...
Geologic Features Identification and Summary Activity
... Description of how this feature came to its present form: An earthquake is a sudden and sometimes catastrophic movement of a part of the Earth's crust. Earthquakes result from the dynamic release of elastic strain energy that radiates seismic waves. Earthquakes typically result from the movement of ...
... Description of how this feature came to its present form: An earthquake is a sudden and sometimes catastrophic movement of a part of the Earth's crust. Earthquakes result from the dynamic release of elastic strain energy that radiates seismic waves. Earthquakes typically result from the movement of ...
Xtra_credit_MC_chapt_5_2014.txt Xtra_credit_MC_chapt_5_2014.txt
... 1. Which of the following did NOT support the idea that all of the continents were once one super−continent? a) South America and Africa look like they can fit into each other b) The mid−ocean ridges between continents c) The similar types of life along the coasts of South America and Africa d) The ...
... 1. Which of the following did NOT support the idea that all of the continents were once one super−continent? a) South America and Africa look like they can fit into each other b) The mid−ocean ridges between continents c) The similar types of life along the coasts of South America and Africa d) The ...
The Ocean Planet - South Carolina Sea Grant Consortium
... This zone is sub-divided into the neritic and oceanic zones, based on the relative distance from shore. The neritic zone may be considered the “nearshore” portion of the pelagic zone. Its boundaries are from the shoreline’s high tide mark to the point offshore where the water depth is 200 m (656 fee ...
... This zone is sub-divided into the neritic and oceanic zones, based on the relative distance from shore. The neritic zone may be considered the “nearshore” portion of the pelagic zone. Its boundaries are from the shoreline’s high tide mark to the point offshore where the water depth is 200 m (656 fee ...
Blakeley Jones GEOL 1104 Review 6 – Earth`s Interior and Plate
... 1) T or F: The oldest rocks on the seafloor are much younger than the oldest rocks on the continents. 2) T or F: Earth's radius and surface area are slowly increasing to accommodate the new oceanic crust being formed at mid-oceanic ridges. 4) T or F: The oldest rocks of the oceanic crust are found i ...
... 1) T or F: The oldest rocks on the seafloor are much younger than the oldest rocks on the continents. 2) T or F: Earth's radius and surface area are slowly increasing to accommodate the new oceanic crust being formed at mid-oceanic ridges. 4) T or F: The oldest rocks of the oceanic crust are found i ...
Nature
Nature, in the broadest sense, is the natural, physical, or material world or universe. ""Nature"" can refer to the phenomena of the physical world, and also to life in general. The study of nature is a large part of science. Although humans are part of nature, human activity is often understood as a separate category from other natural phenomena.The word nature is derived from the Latin word natura, or ""essential qualities, innate disposition"", and in ancient times, literally meant ""birth"". Natura is a Latin translation of the Greek word physis (φύσις), which originally related to the intrinsic characteristics that plants, animals, and other features of the world develop of their own accord. The concept of nature as a whole, the physical universe, is one of several expansions of the original notion; it began with certain core applications of the word φύσις by pre-Socratic philosophers, and has steadily gained currency ever since. This usage continued during the advent of modern scientific method in the last several centuries.Within the various uses of the word today, ""nature"" often refers to geology and wildlife. Nature can refer to the general realm of living plants and animals, and in some cases to the processes associated with inanimate objects – the way that particular types of things exist and change of their own accord, such as the weather and geology of the Earth. It is often taken to mean the ""natural environment"" or wilderness–wild animals, rocks, forest, and in general those things that have not been substantially altered by human intervention, or which persist despite human intervention. For example, manufactured objects and human interaction generally are not considered part of nature, unless qualified as, for example, ""human nature"" or ""the whole of nature"". This more traditional concept of natural things which can still be found today implies a distinction between the natural and the artificial, with the artificial being understood as that which has been brought into being by a human consciousness or a human mind. Depending on the particular context, the term ""natural"" might also be distinguished from the unnatural or the supernatural.