Lecture Slides
... 2. Initial Pb must be known/modeled or you must chose minerals that have essentially no initial Pb (zircon, apatite, monazite). 3. 235U/238U known today (1/137.88) and invariant across most of planet. 4. Still a problem, the equation: ...
... 2. Initial Pb must be known/modeled or you must chose minerals that have essentially no initial Pb (zircon, apatite, monazite). 3. 235U/238U known today (1/137.88) and invariant across most of planet. 4. Still a problem, the equation: ...
Many geologists study rocks and minerals, as rocks
... etc.). Minerals are what rocks are made of. Rocks classification Rocks are classified according to how they are formed. There are 3 types. They can be igneous, sedimentary or metamorphic. Igneous rocks are hard rocks possessing variably colored crystals. There are two types of igneous rocks: Intrusi ...
... etc.). Minerals are what rocks are made of. Rocks classification Rocks are classified according to how they are formed. There are 3 types. They can be igneous, sedimentary or metamorphic. Igneous rocks are hard rocks possessing variably colored crystals. There are two types of igneous rocks: Intrusi ...
Classification of Rocks
... 2. Formation below the surface, followed by tectonic uplift and removal of the overlying material by erosion For the following discussion refer to the attached generalize Rock Cycle diagram. There are three major classes of rocks, IGNEOUS, SEDIMENTARY, and METAMORPHIC, with the following attributes: ...
... 2. Formation below the surface, followed by tectonic uplift and removal of the overlying material by erosion For the following discussion refer to the attached generalize Rock Cycle diagram. There are three major classes of rocks, IGNEOUS, SEDIMENTARY, and METAMORPHIC, with the following attributes: ...
geologic time scale
... crystallizes, we can assume that the fault or intrusion is younger than the rocks affected. ...
... crystallizes, we can assume that the fault or intrusion is younger than the rocks affected. ...
Dynamic Crust Part 2
... the epicenter increases To find the epicenter data from at least three different recording stations must be used Seismologists draw a circle around the station using a radius equal to the distance from the epicenter Where the three circle intersect is the epicenter ...
... the epicenter increases To find the epicenter data from at least three different recording stations must be used Seismologists draw a circle around the station using a radius equal to the distance from the epicenter Where the three circle intersect is the epicenter ...
The crust is the outermost of several onion
... areas in the Taupo Volcanic Zone and is believed to have been the site of several enormous eruptions during the last 250,000 years. During each such eruption the surface collapsed in the vent area after the magma had escaped. This has resulted in the progressive formation of a large basin or 'calder ...
... areas in the Taupo Volcanic Zone and is believed to have been the site of several enormous eruptions during the last 250,000 years. During each such eruption the surface collapsed in the vent area after the magma had escaped. This has resulted in the progressive formation of a large basin or 'calder ...
The geologic section constructed from exposures immediately below
... YYY). The layering in the photos consists of alternating quart-rich layers with clay-rich layers. The quartz has not undergone incipient recrystallization that would indicate deformation above 300° C (Stipp et al., 2002). Instead, quartz and detrital feldspar (both plagioclase and K-spar) grains are ...
... YYY). The layering in the photos consists of alternating quart-rich layers with clay-rich layers. The quartz has not undergone incipient recrystallization that would indicate deformation above 300° C (Stipp et al., 2002). Instead, quartz and detrital feldspar (both plagioclase and K-spar) grains are ...
Mountain Building Mountain Building
... • Older Paleozoic- and Precambrian-age mountains • Appalachians • Urals in Russia ...
... • Older Paleozoic- and Precambrian-age mountains • Appalachians • Urals in Russia ...
Material properties and microstructure from
... The Alcáçovas area is located in the SW sector of the OssaMorena Zone (OMZ), close to a major fault that separates this geotectonic unit from the South Portuguese Zone (SPZ). Along this boundary, in the OMZ, testimonies of low-K tholeiitic and calcalkaline magmatism are common and have been interpre ...
... The Alcáçovas area is located in the SW sector of the OssaMorena Zone (OMZ), close to a major fault that separates this geotectonic unit from the South Portuguese Zone (SPZ). Along this boundary, in the OMZ, testimonies of low-K tholeiitic and calcalkaline magmatism are common and have been interpre ...
Slide 1
... #1 - The Canadian (also called the Precambrian) Shield • the geologic core of the country • ancient (4 billion years in some places), hard igneous rock from which all the other areas were created • used to be a huge mountain range ...
... #1 - The Canadian (also called the Precambrian) Shield • the geologic core of the country • ancient (4 billion years in some places), hard igneous rock from which all the other areas were created • used to be a huge mountain range ...
Sedimentary Rock
... Earth’s surface and is released as heat, or infrared radiation. •The infrared radiation is mostly absorbed by the greenhouse gases in the atmosphere and so becomes ‘trapped’ around the Earth and cannot escape. •Without the greenhouse effect the Earth’s temperature would be much cooler. ...
... Earth’s surface and is released as heat, or infrared radiation. •The infrared radiation is mostly absorbed by the greenhouse gases in the atmosphere and so becomes ‘trapped’ around the Earth and cannot escape. •Without the greenhouse effect the Earth’s temperature would be much cooler. ...
File
... because they only lived during a specific time. The Relative Age of something is its age in comparison to the ages of other things. Relative age does not tell you the age in actual years only that a layer is younger than the layer below it, or older than the layer above it. The Principle of Superpos ...
... because they only lived during a specific time. The Relative Age of something is its age in comparison to the ages of other things. Relative age does not tell you the age in actual years only that a layer is younger than the layer below it, or older than the layer above it. The Principle of Superpos ...
Alaska
... and even farther north. But what is geologic terrane and how does accretion deform continental crust into mountains and break it into crustal blocks that grind past each other on crustal faults? A terrane is an assemblage of rocks that were transported far from where they formed and are distinct fr ...
... and even farther north. But what is geologic terrane and how does accretion deform continental crust into mountains and break it into crustal blocks that grind past each other on crustal faults? A terrane is an assemblage of rocks that were transported far from where they formed and are distinct fr ...
Thursday-Chapter 10: Global Climate Systems
... o As habitat shrinks-less individuals around, resulting in the 6h great extinction, which we are engaged with and responsible for ...
... o As habitat shrinks-less individuals around, resulting in the 6h great extinction, which we are engaged with and responsible for ...
Sample_reading_tasks
... Quality of cartographic message depends on 1…….. and symbols. During map design process, symbol specification is often uncertain. Graphical signs 2…… to tastes, needs and context of use. Colours use is of special relevance to environmental, topographic and thematic maps whose primary purpose is to 3 ...
... Quality of cartographic message depends on 1…….. and symbols. During map design process, symbol specification is often uncertain. Graphical signs 2…… to tastes, needs and context of use. Colours use is of special relevance to environmental, topographic and thematic maps whose primary purpose is to 3 ...
South Africa`s Newest Mineral Oasis: Geology of the Salt River
... displays a gradational change from a Cu-rich zone in the southeast to a Zn-Pb-rich zone in the northwestern portion of the deposit. Discussion: Ongoing local and regional-scale geologic and stratigraphic evaluations of the Salt River deposit suggest that the Geelvloer Sequence was deposited in a tec ...
... displays a gradational change from a Cu-rich zone in the southeast to a Zn-Pb-rich zone in the northwestern portion of the deposit. Discussion: Ongoing local and regional-scale geologic and stratigraphic evaluations of the Salt River deposit suggest that the Geelvloer Sequence was deposited in a tec ...
Chapter 9
... America (Laurentia) collided with western South America (Amazonia). • Orogeny was associated with formation of the supercontinent, Rodinia. • Later, during the Paleozoic Era, Grenville rocks were metamorphosed and intruded during the three orogenies involved in the building of the Appalachians. ...
... America (Laurentia) collided with western South America (Amazonia). • Orogeny was associated with formation of the supercontinent, Rodinia. • Later, during the Paleozoic Era, Grenville rocks were metamorphosed and intruded during the three orogenies involved in the building of the Appalachians. ...
Geology Content from the Frameworks
... When continental crust meets continental crust at a convergent boundary, a collision occurs, resulting in folds, faults, and high mountains. Transform boundaries are where plates slide past each other. They connect other plate boundaries and are characterized by earthquakes. Moving plates caus ...
... When continental crust meets continental crust at a convergent boundary, a collision occurs, resulting in folds, faults, and high mountains. Transform boundaries are where plates slide past each other. They connect other plate boundaries and are characterized by earthquakes. Moving plates caus ...
How are seismic waves generated-Elastic rebound theory Describe
... the greatest velocity through the Earth. When they travel through air, they take the form of sound waves. S waves- S-waves, also known as secondary waves, shear waves or shaking waves, are transverse waves that travel slower than P-waves. In this case, particle motion is perpendicular to the direc ...
... the greatest velocity through the Earth. When they travel through air, they take the form of sound waves. S waves- S-waves, also known as secondary waves, shear waves or shaking waves, are transverse waves that travel slower than P-waves. In this case, particle motion is perpendicular to the direc ...
Weathering and Erosion
... and that by waves. • Stream erosion - can carry and deposit material, running water in a stream can carry materials that attack the bedrock of the river and create deeper valleys, materials are then deposited at the mouth, or end of the river, usually to form a delta. • Waves erosion - storm waves c ...
... and that by waves. • Stream erosion - can carry and deposit material, running water in a stream can carry materials that attack the bedrock of the river and create deeper valleys, materials are then deposited at the mouth, or end of the river, usually to form a delta. • Waves erosion - storm waves c ...
Name______________________ due date ______ period
... 9. In which era did dinosaurs become extinct? ___________________________________________ 10. In which era did the great extinction on earth take place? _______________________________ 11. Which statement best explains why no Permian age bedrock is found in New York State? (1) The extinction of many ...
... 9. In which era did dinosaurs become extinct? ___________________________________________ 10. In which era did the great extinction on earth take place? _______________________________ 11. Which statement best explains why no Permian age bedrock is found in New York State? (1) The extinction of many ...
NAME - Thomas C. Cario Middle School
... 23.) What happens to p-waves when they enter the liquid outer core? Bend and Slow down S-Waves? They don’t enter the Outer Core 24.) Which seismic waves are the fastest? Primary 25.) What is the name for the part of the Earth where no seismic waves are detected from a given earthquake? Shadow Zone 2 ...
... 23.) What happens to p-waves when they enter the liquid outer core? Bend and Slow down S-Waves? They don’t enter the Outer Core 24.) Which seismic waves are the fastest? Primary 25.) What is the name for the part of the Earth where no seismic waves are detected from a given earthquake? Shadow Zone 2 ...
Algoman orogeny
The Algoman orogeny, known as the Kenoran orogeny in Canada, was an episode of mountain-building (orogeny) during the Late Archean Eon that involved repeated episodes of continental collisions, compressions and subductions. The Superior province and the Minnesota River Valley terrane collided about 2,700 to 2,500 million years ago. The collision folded the Earth's crust and produced enough heat and pressure to metamorphose the rock. Blocks were added to the Superior province along a 1,200 km (750 mi) boundary that stretches from present-day eastern South Dakota into the Lake Huron area. The Algoman orogeny brought the Archaen Eon to a close, about 2,500 million years ago; it lasted less than 100 million years and marks a major change in the development of the earth’s crust.The Canadian shield contains belts of metavolcanic and metasedimentary rocks formed by the action of metamorphism on volcanic and sedimentary rock. The areas between individual belts consist of granites or granitic gneisses that form fault zones. These two types of belts can be seen in the Wabigoon, Quetico and Wawa subprovinces; the Wabigoon and Wawa are of volcanic origin and the Quetico is of sedimentary origin. These three subprovinces lie linearly in southwestern- to northeastern-oriented belts about 140 km (90 mi) wide on the southern portion of the Superior Province.The Slave province and portions of the Nain province were also affected. Between about 2,000 and 1,700 million years ago these combined with the Sask and Wyoming cratons to form the first supercontinent, the Kenorland supercontinent.