Lecture 5 - Plate Tectonics and Rocks
... – First layer is marine sediment of various composition and thickness (extensively sampled) – Second layer is pillow basalt overlying basaltic ...
... – First layer is marine sediment of various composition and thickness (extensively sampled) – Second layer is pillow basalt overlying basaltic ...
Geologic Evolution Vocabulary
... smaller than a "period" and larger than an "age", on the geologic time scale. ...
... smaller than a "period" and larger than an "age", on the geologic time scale. ...
The Earth`s layers
... The mantle is made of much denser, thicker material, because of this the plates "float" on it like oil floats on water. Many geologists believe that the mantle "flows" because of convection currents. Convection currents are caused by the very hot material at the deepest part of the mantle rising, th ...
... The mantle is made of much denser, thicker material, because of this the plates "float" on it like oil floats on water. Many geologists believe that the mantle "flows" because of convection currents. Convection currents are caused by the very hot material at the deepest part of the mantle rising, th ...
The argon constraints on mantle structure
... WhereasK-At-isotope systematicshave been includedas mantle values. This observation is important because it demonstratesthat these lithophile elements in OIB are not part of various discussionsof mantle structurepreviously a simple and straightforwardargumentis presentedhere. Because derivedfrom a p ...
... WhereasK-At-isotope systematicshave been includedas mantle values. This observation is important because it demonstratesthat these lithophile elements in OIB are not part of various discussionsof mantle structurepreviously a simple and straightforwardargumentis presentedhere. Because derivedfrom a p ...
PLATETECTONICS-Slip,SlidnAway
... • Giant plates drift around on the asthenosphere at a rate of 1 to 2 centimeters per year ...
... • Giant plates drift around on the asthenosphere at a rate of 1 to 2 centimeters per year ...
The Layered Earth - Starry Night Education
... The knowledge of earthquake waves and their speed can be used to locate the epicenter and hypocenter of an earthquake. The severity of an earthquake is governed by factors such as distance from the epicenter and hypocenter, local geology and type of construction used in the area. ...
... The knowledge of earthquake waves and their speed can be used to locate the epicenter and hypocenter of an earthquake. The severity of an earthquake is governed by factors such as distance from the epicenter and hypocenter, local geology and type of construction used in the area. ...
Earth History - Continental Drift, Pangaea, Rock
... D. Catastrophic volcanic eruptions melted the ice and exposed the soil to sunlight. ...
... D. Catastrophic volcanic eruptions melted the ice and exposed the soil to sunlight. ...
Document
... • Giant plates drift around on the asthenosphere at a rate of 1 to 2 centimeters per year ...
... • Giant plates drift around on the asthenosphere at a rate of 1 to 2 centimeters per year ...
Plate Movement ppt - Armuchee Middle School
... • Mid-Ocean Ridges are found winding around the Earth in all oceans. • They look like mountain ranges. • Most stay under the surface of the water. • Iceland is one area of the mountain range that rises above the surface of the North Atlantic Ocean • What happens when plates move apart??? Magma/lava ...
... • Mid-Ocean Ridges are found winding around the Earth in all oceans. • They look like mountain ranges. • Most stay under the surface of the water. • Iceland is one area of the mountain range that rises above the surface of the North Atlantic Ocean • What happens when plates move apart??? Magma/lava ...
Earthquakes
... • For every Km of depth the temperature increases by 14oC • Thus if we are 3km below the surface then we have a temperature of 42oC or 105oF ...
... • For every Km of depth the temperature increases by 14oC • Thus if we are 3km below the surface then we have a temperature of 42oC or 105oF ...
Plate Movement ppt
... • Mid-Ocean Ridges are found winding around the Earth in all oceans. • They look like mountain ranges. • Most stay under the surface of the water. • Iceland is one area of the mountain range that rises above the surface of the North Atlantic Ocean • What happens when plates move apart??? Magma/lava ...
... • Mid-Ocean Ridges are found winding around the Earth in all oceans. • They look like mountain ranges. • Most stay under the surface of the water. • Iceland is one area of the mountain range that rises above the surface of the North Atlantic Ocean • What happens when plates move apart??? Magma/lava ...
Inside Earth: Layers of the Earth
... waves to “see“ Earth's interior. Waves of energy spread out from an earthquake’s center. These are called seismic waves (Figure to left). Seismic waves change speed as they move through different materials. This causes them to bend. Some seismic waves do not travel through liquids or gases. Scientis ...
... waves to “see“ Earth's interior. Waves of energy spread out from an earthquake’s center. These are called seismic waves (Figure to left). Seismic waves change speed as they move through different materials. This causes them to bend. Some seismic waves do not travel through liquids or gases. Scientis ...
Inside Earth: Layers of the Earth - Maria Montessori Academy Blog
... waves to “see“ Earth's interior. Waves of energy spread out from an earthquake’s center. These are called seismic waves (Figure to left). Seismic waves change speed as they move through different materials. This causes them to bend. Some seismic waves do not travel through liquids or gases. Scientis ...
... waves to “see“ Earth's interior. Waves of energy spread out from an earthquake’s center. These are called seismic waves (Figure to left). Seismic waves change speed as they move through different materials. This causes them to bend. Some seismic waves do not travel through liquids or gases. Scientis ...
Inside Earth: Layers of the Earth
... waves to “see“ Earth's interior. Waves of energy spread out from an earthquake’s center. These are called seismic waves (Figure to left). Seismic waves change speed as they move through different materials. This causes them to bend. Some seismic waves do not travel through liquids or gases. Scientis ...
... waves to “see“ Earth's interior. Waves of energy spread out from an earthquake’s center. These are called seismic waves (Figure to left). Seismic waves change speed as they move through different materials. This causes them to bend. Some seismic waves do not travel through liquids or gases. Scientis ...
Abundances and isotopic compositions of rare gases in granites
... argon, krypton and xenon released from four specimens of granites in stepwise-heating experiments. These rocks contained appreciable amounts of 40Ar from the decay of 40K and 131-136Xe from the 238U spontaneous fission. The contents of neon, argon (excluding 40Ar), krypton and xenon in these granite ...
... argon, krypton and xenon released from four specimens of granites in stepwise-heating experiments. These rocks contained appreciable amounts of 40Ar from the decay of 40K and 131-136Xe from the 238U spontaneous fission. The contents of neon, argon (excluding 40Ar), krypton and xenon in these granite ...
the thin and solid outermost layer of Earth above the mantle
... Bubble in the correct answer on your scantron. 1. Continental Drift is a. the hypothesis that a single large landmass broke up into smaller landmasses to form the continents, which then drifted to their present locations; the movement of continents b. the theory that explains how large pieces of Ear ...
... Bubble in the correct answer on your scantron. 1. Continental Drift is a. the hypothesis that a single large landmass broke up into smaller landmasses to form the continents, which then drifted to their present locations; the movement of continents b. the theory that explains how large pieces of Ear ...
GEOL 4110 Advanced Earth Science For Teachers Jim Miller
... GEOL 4110 Advanced Earth Science For Teachers ...
... GEOL 4110 Advanced Earth Science For Teachers ...
Rocks Rock! Part 2
... Metamorphism occurs within the Earth's crust rather than on the surface. Most metamorphism takes place from 6 to 19 miles below the Earth's surface. That means we don't see metamorphic rock nearly as often as the igneous (from lava or magma) or sedimentary (layers of pressed sediment) types of rocks ...
... Metamorphism occurs within the Earth's crust rather than on the surface. Most metamorphism takes place from 6 to 19 miles below the Earth's surface. That means we don't see metamorphic rock nearly as often as the igneous (from lava or magma) or sedimentary (layers of pressed sediment) types of rocks ...
VOYAGE OF THE CONTINENTS AFRICA ORIGINS Script
... These are slices of the two main mantle rock types: eclogite et peridotite. There are very different compositions. If you look closely, in the eclogite the granit are beautiful orange colour whereas in the peridotite they are purple colour. And the reason why the peridotite’s garnets are so purple i ...
... These are slices of the two main mantle rock types: eclogite et peridotite. There are very different compositions. If you look closely, in the eclogite the granit are beautiful orange colour whereas in the peridotite they are purple colour. And the reason why the peridotite’s garnets are so purple i ...
Age of the Earth
The age of the Earth is 4.54 ± 0.05 billion years (4.54 × 109 years ± 1%). This age is based on evidence from radiometric age dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.Following the development of radiometric age dating in the early 20th century, measurements of lead in uranium-rich minerals showed that some were in excess of a billion years old.The oldest such minerals analyzed to date—small crystals of zircon from the Jack Hills of Western Australia—are at least 4.404 billion years old. Comparing the mass and luminosity of the Sun to those of other stars, it appears that the Solar System cannot be much older than those rocks. Calcium-aluminium-rich inclusions – the oldest known solid constituents within meteorites that are formed within the Solar System – are 4.567 billion years old, giving an age for the solar system and an upper limit for the age of Earth.It is hypothesised that the accretion of Earth began soon after the formation of the calcium-aluminium-rich inclusions and the meteorites. Because the exact amount of time this accretion process took is not yet known, and the predictions from different accretion models range from a few millions up to about 100 million years, the exact age of Earth is difficult to determine. It is also difficult to determine the exact age of the oldest rocks on Earth, exposed at the surface, as they are aggregates of minerals of possibly different ages.