2.5 MB Notes file that accompanies map ()
... magmas at both the magmatic “tail” that extends from the southeast end of the Benson Lake pendant as well as the smaller mingling zone on the north end of the pendant. While the east half of the “tail” is dominated by co-magmatic mingling of gabbroic to granodioritic magmas (Kyvmd), the western cont ...
... magmas at both the magmatic “tail” that extends from the southeast end of the Benson Lake pendant as well as the smaller mingling zone on the north end of the pendant. While the east half of the “tail” is dominated by co-magmatic mingling of gabbroic to granodioritic magmas (Kyvmd), the western cont ...
Outline of Geology of Iceland Chapman Conference 2012
... Iceland is located at the junction between the Reykjanes Ridge in the south and the Kolbeinsey Ridge in the north, which are submarine segments of the mid-ocean ridge closest to Iceland. The surface expression of the plate boundary in Iceland is the narrow belts of active faulting and volcanism exte ...
... Iceland is located at the junction between the Reykjanes Ridge in the south and the Kolbeinsey Ridge in the north, which are submarine segments of the mid-ocean ridge closest to Iceland. The surface expression of the plate boundary in Iceland is the narrow belts of active faulting and volcanism exte ...
... Most of us latched onto this idea and it became part of the lore of lunar science. We extrapolated the observation to the entire Moon. (Outlandish extrapolations are not uncommon in planetary science!) A lower crust like LKFM became a basic component in estimates of the composition of the Moon. Most ...
Earth Science Curriculum Framework
... mineral components with a hand sample or by description, and analyze the significance of these features in terms of mode of origin and history. ...
... mineral components with a hand sample or by description, and analyze the significance of these features in terms of mode of origin and history. ...
Planet Earth Planet Earth
... Background Crater Lake is the deepest lake in the United States, measuring 589 m (1932 ft) at its deepest point. The lake is inside a volcano called Mount Mazama. As Mount Mazama erupted around 6800 years ago, the molten rock and volcanic ash that helped to support the cone of the volcano were eject ...
... Background Crater Lake is the deepest lake in the United States, measuring 589 m (1932 ft) at its deepest point. The lake is inside a volcano called Mount Mazama. As Mount Mazama erupted around 6800 years ago, the molten rock and volcanic ash that helped to support the cone of the volcano were eject ...
Dynamic Earth Assessment Test Results
... b. Mountain formation c. Volcanic eruption d. Rift formation You answered correctly! 12. Which of these statements is correct? a. Continental crust is thicker than oceanic crust. b. Continental crust is thinner than oceanic crust. c. Oceanic crust is thicker than continental crust. d. Continental an ...
... b. Mountain formation c. Volcanic eruption d. Rift formation You answered correctly! 12. Which of these statements is correct? a. Continental crust is thicker than oceanic crust. b. Continental crust is thinner than oceanic crust. c. Oceanic crust is thicker than continental crust. d. Continental an ...
Weathering: the decay of rocks and the source of sediments in and
... • Bedding planes - rocks break into slabs or sheets • Cleavage or foliation - metamorphic rocks break along these planes • Shattering - in dense rocks like quartzite ...
... • Bedding planes - rocks break into slabs or sheets • Cleavage or foliation - metamorphic rocks break along these planes • Shattering - in dense rocks like quartzite ...
Beyond Granite: The Geology of Adventure
... The glacial terrain of the White Mountains formed during multiple intervals of cold climate that persisted on Earth between 2.6 million years ago and 11,700 years ago, a time known the Pleistocene epoch. These glacial periods are linked to subtle, periodic changes in the Earth’s orbit that affect ho ...
... The glacial terrain of the White Mountains formed during multiple intervals of cold climate that persisted on Earth between 2.6 million years ago and 11,700 years ago, a time known the Pleistocene epoch. These glacial periods are linked to subtle, periodic changes in the Earth’s orbit that affect ho ...
Sea-Floor Spreading
... • Scientists found that mid-ocean ridges extend into all of Earth’s oceans. ...
... • Scientists found that mid-ocean ridges extend into all of Earth’s oceans. ...
Mildly peraluminous high-silica granites in the central part of the
... Gravimetric data indicate that the batholith is a relatively thin (about 3 km thick) tabular body with one or more root-like extensions in the eastern-central area (Ramberg 1976). Alternatively the data could be interpreted as a pseudo-cylindrical body grading downwards into a mixture of stoped bloc ...
... Gravimetric data indicate that the batholith is a relatively thin (about 3 km thick) tabular body with one or more root-like extensions in the eastern-central area (Ramberg 1976). Alternatively the data could be interpreted as a pseudo-cylindrical body grading downwards into a mixture of stoped bloc ...
Plate Tectonics Section 1 Wegener`s Hypothesis continental drift
... • continental drift the hypothesis that a single large landmass broke up into smaller landmasses to form continents, which then drifted to their present location. • As people studied continental coastlines on maps, they noticed that the continents looked as though they would fit together like parts ...
... • continental drift the hypothesis that a single large landmass broke up into smaller landmasses to form continents, which then drifted to their present location. • As people studied continental coastlines on maps, they noticed that the continents looked as though they would fit together like parts ...
The structure and geomorphology of west-central New
... Mexico between (and adjacent to) U. S. Highways 66 and 60 from the Rio Grande to the Arizona state line. This area is mainly in the southeastern part of the Colorado Plateau, but also it overlaps into the Rio Grande trough. This structural depression has been assigned by some writers to the Basin an ...
... Mexico between (and adjacent to) U. S. Highways 66 and 60 from the Rio Grande to the Arizona state line. This area is mainly in the southeastern part of the Colorado Plateau, but also it overlaps into the Rio Grande trough. This structural depression has been assigned by some writers to the Basin an ...
Evidence For Plate Tectonics
... cause tectonic plates to move toward one another and stress builds up. When the stress is to great, fractures (faulting) may occur within the tectonic plates or the plates may slip abruptly and earthquakes result. The boundaries are also places of high heat flow, where molten rock rises to the sur ...
... cause tectonic plates to move toward one another and stress builds up. When the stress is to great, fractures (faulting) may occur within the tectonic plates or the plates may slip abruptly and earthquakes result. The boundaries are also places of high heat flow, where molten rock rises to the sur ...
Tectonic framework of Albuquerque country
... Although the Sandia and Manzano mountains are commonly considered to be separate physiographic entities, they are formed by a single, major, east-tilted fault block that includes the Los Pinos Mountains to the south. This fault block is about 120 km long and up to 15 km wide. Precambrian rocks are e ...
... Although the Sandia and Manzano mountains are commonly considered to be separate physiographic entities, they are formed by a single, major, east-tilted fault block that includes the Los Pinos Mountains to the south. This fault block is about 120 km long and up to 15 km wide. Precambrian rocks are e ...
CHAPTER 2 GEOLOGIC INVESTIGATIONS IN WESTERN SAUDI
... by calc-alkalic granite, and the youngest rocks include the Fatima formation, the equivalent of Karpoff’s Fatima series, and the Ablah formation. The youngest layered rocks, extensively developed in the northeastern part of the shield, were called the Shammar rhyolite, and they and older rocks are i ...
... by calc-alkalic granite, and the youngest rocks include the Fatima formation, the equivalent of Karpoff’s Fatima series, and the Ablah formation. The youngest layered rocks, extensively developed in the northeastern part of the shield, were called the Shammar rhyolite, and they and older rocks are i ...
Mountain Building - sabolsciencehonors
... The Appalachian Mountains, shown in Figure 20.5, in the eastern United States formed hundreds of millions of years ago when the North American continent collided with Gondwana. Rates of erosion on land are such that these mountains should have been completely eroded millions of years ago. Why, then, ...
... The Appalachian Mountains, shown in Figure 20.5, in the eastern United States formed hundreds of millions of years ago when the North American continent collided with Gondwana. Rates of erosion on land are such that these mountains should have been completely eroded millions of years ago. Why, then, ...
Strike-slip tectonics in arc-continent collision
... The overprinting features between some of the previous structures related to the fracture network and the D1 structures, show that the more brittle ones are related to a younger major tectonic event which is considered has D2 (Ferreira, 2011; Oliveira, 2011). The D2 widespread structures found in Cr ...
... The overprinting features between some of the previous structures related to the fracture network and the D1 structures, show that the more brittle ones are related to a younger major tectonic event which is considered has D2 (Ferreira, 2011; Oliveira, 2011). The D2 widespread structures found in Cr ...
Weathering Notes
... I can…. • Identify the layers of the earth • Describe how landforms can be changed by weathering and erosion • Explain how water can change landforms such as creating caves and deposition of sediments ...
... I can…. • Identify the layers of the earth • Describe how landforms can be changed by weathering and erosion • Explain how water can change landforms such as creating caves and deposition of sediments ...
Deformation phases and tectonic evolution of the Lhasa block
... The oldest terranes outcrop in the so-called Nyainquentanglha range and are represented by a tectonized metamorphic sequence in which coarse grained ortho¬ gneisses are dominant over high grade metasediments anatexites and two micasgarnet-sillimanite gneisses. They have not been dated precisely but ...
... The oldest terranes outcrop in the so-called Nyainquentanglha range and are represented by a tectonized metamorphic sequence in which coarse grained ortho¬ gneisses are dominant over high grade metasediments anatexites and two micasgarnet-sillimanite gneisses. They have not been dated precisely but ...
Basin Analysis
... • Cratons are rather stable, con-nental blocks that have a basement of Precambrian rocks. They make up the cores of present-‐day con-nents in both North and South Americas, Australia, Russia and Africa, ...
... • Cratons are rather stable, con-nental blocks that have a basement of Precambrian rocks. They make up the cores of present-‐day con-nents in both North and South Americas, Australia, Russia and Africa, ...
The Earth`s Crust
... two depths at which major physical changes occur to minerals. The lower mantle extends from 660 down to about 2700 kilometers, a point where seismic waves are affected so strongly that most researchers believe the rocks beneath are different in their chemistry, not just in their crystallography. Thi ...
... two depths at which major physical changes occur to minerals. The lower mantle extends from 660 down to about 2700 kilometers, a point where seismic waves are affected so strongly that most researchers believe the rocks beneath are different in their chemistry, not just in their crystallography. Thi ...
Oceanic Crust
... Oceanic crust: relatively thin, varying from 5 to 8 km (but thinner at Oceanic ridges) yet denser. Has the average composition of basaltic rock (Basalt) that is rich in silica and magnesium. ...
... Oceanic crust: relatively thin, varying from 5 to 8 km (but thinner at Oceanic ridges) yet denser. Has the average composition of basaltic rock (Basalt) that is rich in silica and magnesium. ...
the plate tectonic theory - The University of Southern Mississippi
... boundary, but this is a somewhat special boundary where two continents have collided. 4. Midplate region a. The rigid midplate region moves along like a conveyer belt to its site of destruction in the subduction zone. Midplate regions are involved in several process. 1) Cooling; the plate cools as i ...
... boundary, but this is a somewhat special boundary where two continents have collided. 4. Midplate region a. The rigid midplate region moves along like a conveyer belt to its site of destruction in the subduction zone. Midplate regions are involved in several process. 1) Cooling; the plate cools as i ...
The Geology of Kentucky Notes
... ________________________ in Harlan County ___________________ feet. Pine Mountain another important feature is best described as a _________________-mile long ridge that extends from Jellico, Tennessee to Elkhorn City, Kentucky. It is _______________feet high in Letcher County and is a direct result ...
... ________________________ in Harlan County ___________________ feet. Pine Mountain another important feature is best described as a _________________-mile long ridge that extends from Jellico, Tennessee to Elkhorn City, Kentucky. It is _______________feet high in Letcher County and is a direct result ...
GEOLOGY OF MINNESOTA: A Centennial Volume
... Minnesota River Valley .................................................................... Northern and East-Central Minnesota .......................................................... Summary and Concluding Remarks ............................................................. ...
... Minnesota River Valley .................................................................... Northern and East-Central Minnesota .......................................................... Summary and Concluding Remarks ............................................................. ...
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.