HERE
... plates apart and adding new material at their edges. • Most spreading zones are found in oceans; for example, the North American and Eurasian plates are spreading apart along the mid-Atlantic ridge. • Spreading zones usually have earthquakes at shallow depths (within 30 kilometers of the surface). • ...
... plates apart and adding new material at their edges. • Most spreading zones are found in oceans; for example, the North American and Eurasian plates are spreading apart along the mid-Atlantic ridge. • Spreading zones usually have earthquakes at shallow depths (within 30 kilometers of the surface). • ...
Plate Tectonics Scavenger Hunt
... The student will research information on plate tectonics by interacting with multimedia files. ...
... The student will research information on plate tectonics by interacting with multimedia files. ...
Continental drift: An idea before its time Pangaea approximately 200
... • extensive mapping of the ocean floor during the 1950s and 1960s • ‘Seafloor spreading hypothesis,’ Harry Hess in the early 1960s ...
... • extensive mapping of the ocean floor during the 1950s and 1960s • ‘Seafloor spreading hypothesis,’ Harry Hess in the early 1960s ...
II. Subduction-related granites: “Andean” I
... 1. Major elements Alkaline, peralkaline (not that the two terms do not have the same values, one refers to a magmatic series, the other to a position in A/CNK vs. A/NK diagrams). Low K/Na, low Mg/Mg+Fe 2. Trace elements Rich in LREE (10-100 times more than I and S types !). Some huge depletions and ...
... 1. Major elements Alkaline, peralkaline (not that the two terms do not have the same values, one refers to a magmatic series, the other to a position in A/CNK vs. A/NK diagrams). Low K/Na, low Mg/Mg+Fe 2. Trace elements Rich in LREE (10-100 times more than I and S types !). Some huge depletions and ...
File
... amount of new ocean floor is added to Earth’s surface. Each cycle of spreading and the intrusion of magma results in the formation of another small section of ocean floor, which slowly pushes older material away from the ridge. ...
... amount of new ocean floor is added to Earth’s surface. Each cycle of spreading and the intrusion of magma results in the formation of another small section of ocean floor, which slowly pushes older material away from the ridge. ...
QUS 112 Intro Engineering Geology - Unesco
... 6. The dust particles collide with each other and form into larger particles. This goes on until the particles get to the size of boulders or small asteroids. 7. Run away growth. Once the larger of these particles get big enough to have a nontrivial gravity, their growth accelerates. Their gravity ...
... 6. The dust particles collide with each other and form into larger particles. This goes on until the particles get to the size of boulders or small asteroids. 7. Run away growth. Once the larger of these particles get big enough to have a nontrivial gravity, their growth accelerates. Their gravity ...
Plate Tectonics Webquest
... 4. What is another name for a trench? 5. What happens to the crust that is being subducted? 6. The additional magma that is created can form what landform along the coastline? 7. What other 2 colliding plates can cause a subduction zone? 8. What does this type of collision create? 9. What is a tsuna ...
... 4. What is another name for a trench? 5. What happens to the crust that is being subducted? 6. The additional magma that is created can form what landform along the coastline? 7. What other 2 colliding plates can cause a subduction zone? 8. What does this type of collision create? 9. What is a tsuna ...
Please Click Mariposa Slate Glossary
... pressure (1500 bars), causing profound physical and/or chemical change. The protolith may be sedimentary rock, igneous rock or another older metamorphic rock. Metamorphic rocks make up a large part of the Earth's crust and are classified by texture and by chemical and mineral assemblage (metamorphic ...
... pressure (1500 bars), causing profound physical and/or chemical change. The protolith may be sedimentary rock, igneous rock or another older metamorphic rock. Metamorphic rocks make up a large part of the Earth's crust and are classified by texture and by chemical and mineral assemblage (metamorphic ...
Department of Chemistry, Physics, and Earth Sciences
... Catalog Course Description: This course focuses on the study of the application of geology to the interactions between people and their physical environment. Earth materials and processes are presented in reference to hazards and concerns that are created naturally and/or by human activities. The ro ...
... Catalog Course Description: This course focuses on the study of the application of geology to the interactions between people and their physical environment. Earth materials and processes are presented in reference to hazards and concerns that are created naturally and/or by human activities. The ro ...
Chapter 15 - Spring Branch ISD
... Physical Structure of the Earth • The Earth’s core is divided into two parts. • The outer core is the liquid layer of the Earth’s core that lies beneath the mantle. • The inner core is the solid, dense center of our planet that extends from the bottom of the outer core to the center of the Earth, ab ...
... Physical Structure of the Earth • The Earth’s core is divided into two parts. • The outer core is the liquid layer of the Earth’s core that lies beneath the mantle. • The inner core is the solid, dense center of our planet that extends from the bottom of the outer core to the center of the Earth, ab ...
Earth Science Notes
... 5. most have moons 6. all orbits are nearly circular except Pluto D. Protoplanet or Nebular Hypothesis- idea that attempts to explain the creation of the solar system 1. big bang- 15 billion years ago; formed cloud- 80% hydrogen, 15% helium, 5% other 2. cloud contracted + as it got smaller, it began ...
... 5. most have moons 6. all orbits are nearly circular except Pluto D. Protoplanet or Nebular Hypothesis- idea that attempts to explain the creation of the solar system 1. big bang- 15 billion years ago; formed cloud- 80% hydrogen, 15% helium, 5% other 2. cloud contracted + as it got smaller, it began ...
Document
... Physical Structure of the Earth • The Earth’s core is divided into two parts. • The outer core is the liquid layer of the Earth’s core that lies beneath the mantle. • The inner core is the solid, dense center of our planet that extends from the bottom of the outer core to the center of the Earth, ab ...
... Physical Structure of the Earth • The Earth’s core is divided into two parts. • The outer core is the liquid layer of the Earth’s core that lies beneath the mantle. • The inner core is the solid, dense center of our planet that extends from the bottom of the outer core to the center of the Earth, ab ...
Chapter 3 Notes
... • Absorb and store energy from sunlight regulates temperatures in Earth’s Atmosphere • Ocean absorbs and release more slowly than land does • If it did not regulate temps conditions would be too extreme for life today • Can warm land masses near by • The ocean is able to absorb incident solar energy ...
... • Absorb and store energy from sunlight regulates temperatures in Earth’s Atmosphere • Ocean absorbs and release more slowly than land does • If it did not regulate temps conditions would be too extreme for life today • Can warm land masses near by • The ocean is able to absorb incident solar energy ...
Rocks
... Wind and water break down the earth Bits of earth settle in lakes and rivers Layers are formed and build up Pressure and time turn the layers to rock ...
... Wind and water break down the earth Bits of earth settle in lakes and rivers Layers are formed and build up Pressure and time turn the layers to rock ...
Minerals and Rocks Notes
... is SiO2 . Sand is quartz crystals that have been weathered into small pieces. In Virginia, some of the important minerals are Kyanite and Pyrite. Rock Identification and Rock Types ...
... is SiO2 . Sand is quartz crystals that have been weathered into small pieces. In Virginia, some of the important minerals are Kyanite and Pyrite. Rock Identification and Rock Types ...
4 Deforming the Earth`s Crust
... 5. The Earth is not getting bigger, new sea floor is being created, and the oldest sea floor is only 180 million years old. If those three things are true, then oceanic crust must be being destroyed somewhere on Earth at the same rate that it is being produced. ...
... 5. The Earth is not getting bigger, new sea floor is being created, and the oldest sea floor is only 180 million years old. If those three things are true, then oceanic crust must be being destroyed somewhere on Earth at the same rate that it is being produced. ...
Manusript of the article: Varga, P., Krumm, FW, Grafarend, EW
... (2012) with the use of uranium-lead and hafnium isotopic data. It was mentioned already that Belousova et al. (2010) found that more than 60% of recent continental crust is older than 2.5 Ga. This fact can be consistent with the trend observed by us for Pz only if a slower crust formation is adopted ...
... (2012) with the use of uranium-lead and hafnium isotopic data. It was mentioned already that Belousova et al. (2010) found that more than 60% of recent continental crust is older than 2.5 Ga. This fact can be consistent with the trend observed by us for Pz only if a slower crust formation is adopted ...
Edible Tectonics
... the lithosphere where the plates are moving apart, as in the Mid-Ocean Ridge system or rift valleys like the one running through eastern Africa. As the plates separate, pressure on the mantle directly below decreases. The decrease in pressure causes the temperature in that portion of the mantle to r ...
... the lithosphere where the plates are moving apart, as in the Mid-Ocean Ridge system or rift valleys like the one running through eastern Africa. As the plates separate, pressure on the mantle directly below decreases. The decrease in pressure causes the temperature in that portion of the mantle to r ...
Convergent, divergent and transformational (lateral
... Key words/terms: core, mantle, crust, tectonic plate, convection current, Gondwanaland, plate boundary, earthquake, fault, seismometer, seismograph, Richter scale, igneous, metamorphic, sedimentary, weathering, erosion, transport, sediment, deposition, compression, uplift, glacier, freeze & thaw. ...
... Key words/terms: core, mantle, crust, tectonic plate, convection current, Gondwanaland, plate boundary, earthquake, fault, seismometer, seismograph, Richter scale, igneous, metamorphic, sedimentary, weathering, erosion, transport, sediment, deposition, compression, uplift, glacier, freeze & thaw. ...
Section 1: Continental Drift
... plates. When continents move, the flow of air and moisture around the globe changes and causes climates to change. • Geologic evidence shows that ice once covered most of Earth’s continental surfaces. As continents began to drift around the globe, however, global temperatures changed and much of the ...
... plates. When continents move, the flow of air and moisture around the globe changes and causes climates to change. • Geologic evidence shows that ice once covered most of Earth’s continental surfaces. As continents began to drift around the globe, however, global temperatures changed and much of the ...
divergent boundary
... • Evidence of these landmass collisions and splits comes from fossils, landform shape, features, and rock structures, and climate change. ...
... • Evidence of these landmass collisions and splits comes from fossils, landform shape, features, and rock structures, and climate change. ...
Metamorphic minerals
... Chlorite + muscovite === staurolite + biotite + quartz + H2O (dehydration) Staurolite + muscovite + quartz === sillimanite + biotite + H2O (higher T & P) Calcite + quartz === wollastonite + CO2 (decarbonation) ...
... Chlorite + muscovite === staurolite + biotite + quartz + H2O (dehydration) Staurolite + muscovite + quartz === sillimanite + biotite + H2O (higher T & P) Calcite + quartz === wollastonite + CO2 (decarbonation) ...
plate tectonics
... • Mountains on the east coast of South America had the same types of rocks as the mountains on the west coast of Africa. The rocks were also the same age. • Plant and animal fossils provided additional evidence. • A fossil of a freshwater reptile called Mesosaurus has been found in very old rocks i ...
... • Mountains on the east coast of South America had the same types of rocks as the mountains on the west coast of Africa. The rocks were also the same age. • Plant and animal fossils provided additional evidence. • A fossil of a freshwater reptile called Mesosaurus has been found in very old rocks 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.