Sedimentary Basins and Plate Tectonics
... Mesozoic, Tertiary, and Quaternary deposits extending to a depth of about 12 km on land and only 1 km or less on the ocean floors. The crust itself is the bedrock of the outer layer of the earth and is relatively thin, 20–40 km thick under the continents, composed mainly of acidic igneous rocks (gra ...
... Mesozoic, Tertiary, and Quaternary deposits extending to a depth of about 12 km on land and only 1 km or less on the ocean floors. The crust itself is the bedrock of the outer layer of the earth and is relatively thin, 20–40 km thick under the continents, composed mainly of acidic igneous rocks (gra ...
The Precambrian - Ms. Alderson`s Earth and Space Science course
... The evolution of life can be divided into two very unequal periods: the very long Precambrian (lasting over 3 billion years), when life for the most part remained at the microbial grade of organization, and the much shorter Phanerozoic, encompassing the Paleozoic, Mesozoic, and Cenozoic eras (about ...
... The evolution of life can be divided into two very unequal periods: the very long Precambrian (lasting over 3 billion years), when life for the most part remained at the microbial grade of organization, and the much shorter Phanerozoic, encompassing the Paleozoic, Mesozoic, and Cenozoic eras (about ...
What are the tectonic plates effects on geography?
... another class in today’s location. And if you are using Windows 8, you can also use the Bing apps to learn more about this location and topic; the Travel and News apps in particular make great teaching tools. Alice Keeler is a mother of 5 and a teacher in Fresno, California. She has her B.A in Mathe ...
... another class in today’s location. And if you are using Windows 8, you can also use the Bing apps to learn more about this location and topic; the Travel and News apps in particular make great teaching tools. Alice Keeler is a mother of 5 and a teacher in Fresno, California. She has her B.A in Mathe ...
Foliated rocks
... Not all metamorphic rock have a foliated texture. Metamorphic rocks composed of only one mineral that forms equidimensional crystals ) (البلورات متساوية األبعادare ...
... Not all metamorphic rock have a foliated texture. Metamorphic rocks composed of only one mineral that forms equidimensional crystals ) (البلورات متساوية األبعادare ...
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... sons were better informed and more abreast of progress, thanks to Tuzo’s popular articles and TV appearances, than were many of his fellow scientists. At normal retirement age, he leapt at the opportunity to head up the Ontario Science Centre, which rapidly became a model of effective science commun ...
... sons were better informed and more abreast of progress, thanks to Tuzo’s popular articles and TV appearances, than were many of his fellow scientists. At normal retirement age, he leapt at the opportunity to head up the Ontario Science Centre, which rapidly became a model of effective science commun ...
How do we know if a rock is intrusive or extrusive?
... minerals common to mafic rocks • Lowest temperatures – crystallization of minerals common to felsic rocks – Mineral crystals undergo chemical reactions with the surrounding melt to produce the next lower temperature mineral in the crystallization sequence ...
... minerals common to mafic rocks • Lowest temperatures – crystallization of minerals common to felsic rocks – Mineral crystals undergo chemical reactions with the surrounding melt to produce the next lower temperature mineral in the crystallization sequence ...
Continental Margins and Ocean Basins - Cal State LA
... where oceanic crust is forced downward into mantle Associated with earthquakes and volcanoes Deepest is Mariana Trench (11,020 m) Longest is Peru-Chile trench (5,900 km) ...
... where oceanic crust is forced downward into mantle Associated with earthquakes and volcanoes Deepest is Mariana Trench (11,020 m) Longest is Peru-Chile trench (5,900 km) ...
Plate Tectonics
... Transform Fault Boundaries At a transform fault boundary, plates grind past each other without creating or destroying the lithosphere. SHALLOW EARTHQUAKES Transform faults • Most join two segments of a mid-ocean ridge. • At the time of formation, they roughly parallel the direction of plate mo ...
... Transform Fault Boundaries At a transform fault boundary, plates grind past each other without creating or destroying the lithosphere. SHALLOW EARTHQUAKES Transform faults • Most join two segments of a mid-ocean ridge. • At the time of formation, they roughly parallel the direction of plate mo ...
THE METAMORPHIC ROCKS OF THE BURLINGTON PENINSULA
... To the east, the Fleur de Lys Group and the gneissic rocks east of Corner Brook are in fault contact with volcanics and sediments of the Bate Verte Group and Glover Formation, respectively. Differences in the structural and metamorphic histories of the Fleur de Lys and Baie Verte Groups suggests tha ...
... To the east, the Fleur de Lys Group and the gneissic rocks east of Corner Brook are in fault contact with volcanics and sediments of the Bate Verte Group and Glover Formation, respectively. Differences in the structural and metamorphic histories of the Fleur de Lys and Baie Verte Groups suggests tha ...
Structural controls on the emplacement of porphyry systems: the
... aligned following the NW structure, but several generations of dikes and veins were emplaced along both fault systems. Space for the emplacement of NW-oriented hydrothermal breccias, which are ubiquitous in this cluster, could have been created by the interplay between these two strike-slip fault sy ...
... aligned following the NW structure, but several generations of dikes and veins were emplaced along both fault systems. Space for the emplacement of NW-oriented hydrothermal breccias, which are ubiquitous in this cluster, could have been created by the interplay between these two strike-slip fault sy ...
Westwater Canyon - Colorado Plateau River Guides
... and gas reservoir in places where hydrocarbon source rocks exist beneath it. Continuing downsection are red beds of shale, siltstone and sandstone in the Triassic Chinle Fm. (210-215 m.y.). The Triassic is the first period of the Mesozoic Era and also records the first appearance of biped dinosaurs. ...
... and gas reservoir in places where hydrocarbon source rocks exist beneath it. Continuing downsection are red beds of shale, siltstone and sandstone in the Triassic Chinle Fm. (210-215 m.y.). The Triassic is the first period of the Mesozoic Era and also records the first appearance of biped dinosaurs. ...
"Bedrock Geology of New York City: More than 600 m.y. of geologic
... Although the Ned Mountain formation was originally defined on the basis of its stratigraphic relationships and its particular lithologic characteristics, we have been testing our interpretation by whole-rock chemical analyses and zircon age determinations. We have found that all the components of th ...
... Although the Ned Mountain formation was originally defined on the basis of its stratigraphic relationships and its particular lithologic characteristics, we have been testing our interpretation by whole-rock chemical analyses and zircon age determinations. We have found that all the components of th ...
Geology :: 9. Convergent and transform fault plate margins
... where the sinking of a plate occurs is called a subduction zone. The type of convergence that takes place between plates depends on the kind of lithosphere involved. Convergence can occur between an oceanic and a largely continental plate, or between two largely oceanic plates, or between two largel ...
... where the sinking of a plate occurs is called a subduction zone. The type of convergence that takes place between plates depends on the kind of lithosphere involved. Convergence can occur between an oceanic and a largely continental plate, or between two largely oceanic plates, or between two largel ...
The Southern Oklahoma Aulacogen
... crustal load represented by the Cambrian mafic intrusions in the Wichita Uplift show that it should be no surprise for the region to have experienced significant Holocene movement along faults in the aulacogen (Crone and Luza, 1990). In fact, the Meers Fault is the southernmost element of the comple ...
... crustal load represented by the Cambrian mafic intrusions in the Wichita Uplift show that it should be no surprise for the region to have experienced significant Holocene movement along faults in the aulacogen (Crone and Luza, 1990). In fact, the Meers Fault is the southernmost element of the comple ...
Chapter 21 The Geology of the Paleozoic Era
... _____ 7. Paleozoic ice ages were restricted to the northern parts of Pangaea. _____ 8. The Late Permian warmth resulted from the natural burning of coal deposits formed earlier in the Pennsylvanian Period. _____ 9. The collisions that built Pangaea were responsible for building the Appalachian and O ...
... _____ 7. Paleozoic ice ages were restricted to the northern parts of Pangaea. _____ 8. The Late Permian warmth resulted from the natural burning of coal deposits formed earlier in the Pennsylvanian Period. _____ 9. The collisions that built Pangaea were responsible for building the Appalachian and O ...
Post-rifting Processes
... development, and upper mantle structure and dynamics. Outreach opportunities – high density of the population, large number of research institutions ...
... development, and upper mantle structure and dynamics. Outreach opportunities – high density of the population, large number of research institutions ...
A Model of Earth`s Interior
... The studies of seismic waves indicate that the Earth is composed of many layers. The crust is the outermost part of the Earth below the atmosphere or hydrosphere. This layer is mostly solid rock, but includes soil and eroded/weathered rock. ~ The crust is divided into two major divisions: continenta ...
... The studies of seismic waves indicate that the Earth is composed of many layers. The crust is the outermost part of the Earth below the atmosphere or hydrosphere. This layer is mostly solid rock, but includes soil and eroded/weathered rock. ~ The crust is divided into two major divisions: continenta ...
rocks!!
... • The crystallization of igneous rocks is a complex and time consuming process The more time a crystal has to form, the larger the crystal will be. • If a mineral has a short amount of time to cool, like lava that pours into water, no crystals will form; obsidian, or volcanic glass will be the resu ...
... • The crystallization of igneous rocks is a complex and time consuming process The more time a crystal has to form, the larger the crystal will be. • If a mineral has a short amount of time to cool, like lava that pours into water, no crystals will form; obsidian, or volcanic glass will be the resu ...
Crustal Features
... • The crust is part of the lithosphere, the outermost layer of the crust. • Plates are part of the crust. (continental crust/plate and oceanic crust/plate) • The convection currents in the mantle layer below and perhaps also gravity cause the plates to move. ...
... • The crust is part of the lithosphere, the outermost layer of the crust. • Plates are part of the crust. (continental crust/plate and oceanic crust/plate) • The convection currents in the mantle layer below and perhaps also gravity cause the plates to move. ...
TECTONIC AND GEOLOGIC EVOLUTION OF THAILAND
... OF SHAN-THAI ANV IMJOCHTNA (Mlddte Pateozoi.c.-LoweJL Muozoi.c.) Shan-Thai remained attached along its (on) western edge to its parent craton until early in the Carboniferous, then rifted away. Late in the Ordovician or early in the Silurian, Lower Paleozoic continental margin deposits that must hav ...
... OF SHAN-THAI ANV IMJOCHTNA (Mlddte Pateozoi.c.-LoweJL Muozoi.c.) Shan-Thai remained attached along its (on) western edge to its parent craton until early in the Carboniferous, then rifted away. Late in the Ordovician or early in the Silurian, Lower Paleozoic continental margin deposits that must hav ...
The Crustal Architecture and Continental Break Up of East India
... to its brittle nature. The lower continental crust (LCC) is highly reflective with sub-horizontal reflector pattern due to its “flowable” ductile nature. ...
... to its brittle nature. The lower continental crust (LCC) is highly reflective with sub-horizontal reflector pattern due to its “flowable” ductile nature. ...
IgPetLab6
... mixture of accumulated crystals and frozen interstitial liquid. When examining plutonic rocks, it is important to try to distinguish between minerals that are interpreted to be cumulus versus those which are post-cumulus, crystallizing from the interstitial liquid between the primary cumulus grains. ...
... mixture of accumulated crystals and frozen interstitial liquid. When examining plutonic rocks, it is important to try to distinguish between minerals that are interpreted to be cumulus versus those which are post-cumulus, crystallizing from the interstitial liquid between the primary cumulus grains. ...
Metamorphism and Metamorphic Rocks Metamorphism is defined
... illustrate general boundaries on P/T diagram high temperature melting regime, T depends on presence of water (700-900°C) sedimentary regime, essentially at low T, low P corner exclude from metamorphism the processes of weathering and diagenesis diagenesis = compaction, recrystallization, cementation ...
... illustrate general boundaries on P/T diagram high temperature melting regime, T depends on presence of water (700-900°C) sedimentary regime, essentially at low T, low P corner exclude from metamorphism the processes of weathering and diagenesis diagenesis = compaction, recrystallization, cementation ...
File - Flipped Out Science with Mrs. Thomas!
... Satellite images have provided evidence for plate tectonics by showing the geologic features that form at the boundaries between tectonic plates. East Africa’s Great Rift Valley (left) is so large it can be seen from space. The San Andreas Fault (right) is slowly pulling southern California and part ...
... Satellite images have provided evidence for plate tectonics by showing the geologic features that form at the boundaries between tectonic plates. East Africa’s Great Rift Valley (left) is so large it can be seen from space. The San Andreas Fault (right) is slowly pulling southern California and part ...
Great Lakes tectonic zone
The Great Lakes tectonic zone is bounded by South Dakota at its tip and heads northeast to south of Duluth, Minnesota, then heads east through northern Wisconsin, Marquette, Michigan, and then trends more northeasterly to skim the northern-most shores of lakes Michigan and Huron before ending in the Sudbury, Ontario, Canada, area.During the Late Archean Era the Algoman orogeny added landmass to the Superior province by volcanic activity and continental collision along a boundary that stretches from present-day South Dakota, U.S., into the Lake Huron region near Sudbury, Ontario, Canada.This crustal boundary is the Great Lakes tectonic zone. It is 1,400 km (870 mi) long, and separates the older Archean gneissic terrane to the south from younger Late Archean greenstone-granite terrane to the north.The zone is characterized by active compression during the Algoman orogeny (about 2,700 million years ago), a pulling-apart (extensional) tectonics (2,450 to 2,100 million years ago), a second compression during the Penokean orogeny (1,900 to 1,850 million years ago), a second extension during Middle Proterozoic time (1,600 million years ago) and minor reactivation during Phanerozoic time (the past 500 million years).Collision began along the Great Lakes tectonic zone (GLTZ) with the Algoman mountain-building event and continued for tens of millions of years. During the formation of the GLTZ, the gneissic Minnesota River Valley subprovince was thrust up onto the Superior province's edge as it consumed the Superior province's oceanic crust. Fragmentation of the Kenorland supercontinent began 2,450 million years ago and was completed by 2,100 million years ago. The Wyoming province is the continental landmass that is hypothesized to have rifted away from the southern Superior province portion of Kenorland, before moving rapidly west and docking with the Laurentia supercontinent 1,850 to 1,715 million years ago. Sedimentation from the GLTZ-rifting environment continued into the Penokean orogeny, which is the next major tectonic event in the Great Lakes region. Several earthquakes have been documented in Minnesota, Michigan's Upper Peninsula and Sudbury in the last 120 years along the GLTZ.