Earth: Portrait of a Planet 3rd edition
... The distribution of earthquakes and volcanoes. The origin of continents and ocean basins. The distribution of fossil plants and animals. The genesis and destruction of mountain chains. Continental drift. ...
... The distribution of earthquakes and volcanoes. The origin of continents and ocean basins. The distribution of fossil plants and animals. The genesis and destruction of mountain chains. Continental drift. ...
The dynamic earth
... b) Mauna loa volcano What kind of volcano is Mauna Loa? c) SIDEBAR i) J. Tuzo Wilson Who is J. Tuzo Wilson? ...
... b) Mauna loa volcano What kind of volcano is Mauna Loa? c) SIDEBAR i) J. Tuzo Wilson Who is J. Tuzo Wilson? ...
A Geologic History of the Methow Valley
... known as fossils, they were believed to be extinct globally until a small population—just 1200 trees—was located in a steep isolated valley in Hubei Province, south-central China, in 1941. Some seeds were brought to the United States in 1946, and in 1952 Metasequoia produced cones on the North Ameri ...
... known as fossils, they were believed to be extinct globally until a small population—just 1200 trees—was located in a steep isolated valley in Hubei Province, south-central China, in 1941. Some seeds were brought to the United States in 1946, and in 1952 Metasequoia produced cones on the North Ameri ...
File - Ian Whaley Dillman EES
... thicker continental crust. This forms what is called a subduction zone. As the oceanic crust sinks, a deep oceanic _ trench__, or valley, is formed at the edge of the continent. The crust continues to be forced deeper into the earth, where high heat and pressure cause trapped water and other gasses ...
... thicker continental crust. This forms what is called a subduction zone. As the oceanic crust sinks, a deep oceanic _ trench__, or valley, is formed at the edge of the continent. The crust continues to be forced deeper into the earth, where high heat and pressure cause trapped water and other gasses ...
convergent boundary
... is heated, it expands, lowering the density of the heated material, causing it to rise through the cooler fluid. As it rises, leaving the vicinity of the heat source, in this case, hot magma near the earth's surface, it will cool. When it becomes more dense (because it is cooler) than the surroundin ...
... is heated, it expands, lowering the density of the heated material, causing it to rise through the cooler fluid. As it rises, leaving the vicinity of the heat source, in this case, hot magma near the earth's surface, it will cool. When it becomes more dense (because it is cooler) than the surroundin ...
Moon
... Internal Structure of the Moon Analysis of the seismic waves that occur indicate the following structure for the Moon: A solid core which is probably rich in iron. The core extends from the center out to a radius of about 500 km. An asthenosphere extending from 500 km from the center to a distance ...
... Internal Structure of the Moon Analysis of the seismic waves that occur indicate the following structure for the Moon: A solid core which is probably rich in iron. The core extends from the center out to a radius of about 500 km. An asthenosphere extending from 500 km from the center to a distance ...
![This Dynamic Earth [USGS]](http://s1.studyres.com/store/data/013453475_1-98c5a4a92f2878fb50cab2ae5c87db8a-300x300.png)
This Dynamic Earth [USGS]
... based on the isotopes of the chemical elements potassium and argon. The potassium-argon technique -- like other "isotopic clocks" -- works because certain elements, such as potassium, contain unstable, parent radioactive isotopes that decay at a steady rate over geologic time to produce daughter iso ...
... based on the isotopes of the chemical elements potassium and argon. The potassium-argon technique -- like other "isotopic clocks" -- works because certain elements, such as potassium, contain unstable, parent radioactive isotopes that decay at a steady rate over geologic time to produce daughter iso ...
UNIT PLAN 2A: PLATE TECTONICS
... The most recent theory is that convection cells themselves do not move the solid blocks of earth, but do provide the heat source to change the densities of the rocks. The hotter, younger rocks are less dense and rise up (mid ocean ridge); the more dense, older rocks sink down toward the mantle (s ...
... The most recent theory is that convection cells themselves do not move the solid blocks of earth, but do provide the heat source to change the densities of the rocks. The hotter, younger rocks are less dense and rise up (mid ocean ridge); the more dense, older rocks sink down toward the mantle (s ...
Figure I2.1 - Online Books Connect
... Volcanic deposits also contain minerals that can conveniently be dated by measuring the decay of radioactive isotopes of potassium and argon, a method that has enabled the dating of fossil remains of the oldest human, Homo habilis, at Olduvai as 1.75 million years old. A similar setting in the Afric ...
... Volcanic deposits also contain minerals that can conveniently be dated by measuring the decay of radioactive isotopes of potassium and argon, a method that has enabled the dating of fossil remains of the oldest human, Homo habilis, at Olduvai as 1.75 million years old. A similar setting in the Afric ...
Lecture 2: Before we get to PLATE TECTONICS…..
... • The hypothesis of continental drift is generally credited to Alfred Wegener, a German meteorologist who wrote the book, The Origin of Continents, first published in 1915. • Wegener presented paleontological and geological evidence that the continents were once united into one supercontinent which ...
... • The hypothesis of continental drift is generally credited to Alfred Wegener, a German meteorologist who wrote the book, The Origin of Continents, first published in 1915. • Wegener presented paleontological and geological evidence that the continents were once united into one supercontinent which ...
Multi-station Seismograph Network
... the maximum motion recorded by a seismograph. Several scales have been defined, but the most commonly used are (1) local magnitude (ML), commonly referred to as “Richter magnitude,” (2) surface-wave magnitude (Ms), (3) body-wave magnitude (Mb), and (4) moment magnitude (Mw). Scales 1-3 have limited ...
... the maximum motion recorded by a seismograph. Several scales have been defined, but the most commonly used are (1) local magnitude (ML), commonly referred to as “Richter magnitude,” (2) surface-wave magnitude (Ms), (3) body-wave magnitude (Mb), and (4) moment magnitude (Mw). Scales 1-3 have limited ...
Chapter 17 Plate Tectonics
... a. What does the cut in the middle of that strip represent? _________________ b. What oozes out of these types of valleys? _______________________________ i. What does this create? __________________________________________ ii. What does this cause the plates to do? ______________________________ 6. ...
... a. What does the cut in the middle of that strip represent? _________________ b. What oozes out of these types of valleys? _______________________________ i. What does this create? __________________________________________ ii. What does this cause the plates to do? ______________________________ 6. ...
plate tectonics
... • Part of the upper mantle and crust (lithosphere) is made up of solid rock. It is a rigid layer. Why do plates move? • The upper mantle and crust (lithosphere) lie on the lower mantle which is fluid. The rocks in the lower mantle (asthenosphere) move in a fluid manner because of the high temperatu ...
... • Part of the upper mantle and crust (lithosphere) is made up of solid rock. It is a rigid layer. Why do plates move? • The upper mantle and crust (lithosphere) lie on the lower mantle which is fluid. The rocks in the lower mantle (asthenosphere) move in a fluid manner because of the high temperatu ...
ROCKS and how to identify them
... are not readily seen by the unaided eye. deep beneath the Earth’s surface allows crystals to This group of igneous rocks is called EXTRUSIVE grow to large size. These crystals are easily visible Igneous Rocks and are typically volcanic in origin. and distinguish this group of Cooling may be so rapid ...
... are not readily seen by the unaided eye. deep beneath the Earth’s surface allows crystals to This group of igneous rocks is called EXTRUSIVE grow to large size. These crystals are easily visible Igneous Rocks and are typically volcanic in origin. and distinguish this group of Cooling may be so rapid ...
ROCKS and how to identify them
... are not readily seen by the unaided eye. deep beneath the Earth’s surface allows crystals to This group of igneous rocks is called EXTRUSIVE grow to large size. These crystals are easily visible Igneous Rocks and are typically volcanic in origin. and distinguish this group of Cooling may be so rapid ...
... are not readily seen by the unaided eye. deep beneath the Earth’s surface allows crystals to This group of igneous rocks is called EXTRUSIVE grow to large size. These crystals are easily visible Igneous Rocks and are typically volcanic in origin. and distinguish this group of Cooling may be so rapid ...
Continental Drift
... of the separation and movement of the continents, organisms that were part of the same population had to evolve to the new conditions, ...
... of the separation and movement of the continents, organisms that were part of the same population had to evolve to the new conditions, ...
... This forms what is called a subduction zone. As the oceanic crust sinks, a deep oceanic trench, or valley, is formed at the edge of the continent. The crust continues to be forced deeper into the earth, where high heat and pressure cause trapped water and other gasses to be released from it. This, i ...
volcano - Cloudfront.net
... EQ: How does the heat from the Earth’s interior reach the surface? Questions: 1. How does magma form and move? 2. Where does magma form? 3. How does plate tectonics relate to volcanoes? 4. What methods do scientists use to predict volcanic eruptions? ...
... EQ: How does the heat from the Earth’s interior reach the surface? Questions: 1. How does magma form and move? 2. Where does magma form? 3. How does plate tectonics relate to volcanoes? 4. What methods do scientists use to predict volcanic eruptions? ...
Plate Tectonics
... in South America and Africa. • Today these 2 continents are separated by 3,000 miles of ocean (too far to swim!) • Mesosaurus must have lived at a time when the 2 continents were joined ...
... in South America and Africa. • Today these 2 continents are separated by 3,000 miles of ocean (too far to swim!) • Mesosaurus must have lived at a time when the 2 continents were joined ...
Global Tectonics Summary
... Earth’s mantle loses its internal heat with a combination of heat conduction and convection. As part of this process, the upper 100-200 km layer of Earth cools and stiffens to form the lithosphere. Internal heat conducts through the lithosphere to the Earth surface. Beneath the lithosphere, internal ...
... Earth’s mantle loses its internal heat with a combination of heat conduction and convection. As part of this process, the upper 100-200 km layer of Earth cools and stiffens to form the lithosphere. Internal heat conducts through the lithosphere to the Earth surface. Beneath the lithosphere, internal ...
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.