Rocks - Fort Thomas Independent Schools
... o Foliated -- aligned sheet or plate-like layered structure (gneiss and schist) o Non-foliated – non aligned layers (marble and slate) ...
... o Foliated -- aligned sheet or plate-like layered structure (gneiss and schist) o Non-foliated – non aligned layers (marble and slate) ...
Rocks - Fort Thomas Independent Schools
... • Classified based on texture • Foliated -- aligned sheet or plate-like layered structure (gneiss and schist) • Non-foliated – non aligned layers (marble and slate) ...
... • Classified based on texture • Foliated -- aligned sheet or plate-like layered structure (gneiss and schist) • Non-foliated – non aligned layers (marble and slate) ...
Chapter 10 * Plate Tectonics
... a single landmass called a supercontinent. According to Wegener, this supercontinent began breaking up into smaller continents during the Mesozoic Era (250 million years ago). It has taken millions of years for these continents to drift to their present locations. Some mountains may be the result of ...
... a single landmass called a supercontinent. According to Wegener, this supercontinent began breaking up into smaller continents during the Mesozoic Era (250 million years ago). It has taken millions of years for these continents to drift to their present locations. Some mountains may be the result of ...
d3 - e-Geowords
... Tokyo, Japan.3 Improvements in detection, measurement and analysis of seismic events, continue. In 1909, Andrija Mohorovičić (pronounced moho-ro-vu-chick) (1857-1936) discovered that familiar rocks do not extend to great depth. He had just finished equipping a seismic observatory in Zagreb when at s ...
... Tokyo, Japan.3 Improvements in detection, measurement and analysis of seismic events, continue. In 1909, Andrija Mohorovičić (pronounced moho-ro-vu-chick) (1857-1936) discovered that familiar rocks do not extend to great depth. He had just finished equipping a seismic observatory in Zagreb when at s ...
Partial melting
... that, compared to continental crust, is relatively enriched in iron and magnesium and depleted in silica (SiO2) (because it reflects the chemistry of the mantle). As two plates continue to move apart, the rock in the seafloor grows older as its distance from the rift zone increases, and as it ages, ...
... that, compared to continental crust, is relatively enriched in iron and magnesium and depleted in silica (SiO2) (because it reflects the chemistry of the mantle). As two plates continue to move apart, the rock in the seafloor grows older as its distance from the rift zone increases, and as it ages, ...
Document
... _____ 16. Subduction is the movement of one tectonic plate a. against another. b. over another. c. under another. d. away from another. _____ 17. As descending oceanic crust scrapes past the continental crust a. its temperature and pressure increase. b. it forms a lava fountain. c. it forms a volcan ...
... _____ 16. Subduction is the movement of one tectonic plate a. against another. b. over another. c. under another. d. away from another. _____ 17. As descending oceanic crust scrapes past the continental crust a. its temperature and pressure increase. b. it forms a lava fountain. c. it forms a volcan ...
Name______________________ due date ______ period
... (1) The extinction of many life-forms occurred at the end of the Permian Period. (2) Only rocks of igneous origin formed in New York State during the Permian Period. (3) Permian-age rocks have been metamorphosed and cannot be identified. (4) Permian-age rocks were either eroded away or never formed ...
... (1) The extinction of many life-forms occurred at the end of the Permian Period. (2) Only rocks of igneous origin formed in New York State during the Permian Period. (3) Permian-age rocks have been metamorphosed and cannot be identified. (4) Permian-age rocks were either eroded away or never formed ...
Changes in the Earth`s surface
... • Heat coming from nuclear reactions in the core • The heat causes convection currents in the mantle • This causes areas of the crust to move around ...
... • Heat coming from nuclear reactions in the core • The heat causes convection currents in the mantle • This causes areas of the crust to move around ...
File
... subduction zone comes from the molten crust and is rich in silicon, alumninium and gases. ...
... subduction zone comes from the molten crust and is rich in silicon, alumninium and gases. ...
Movements of Earth`s Major Plates PPT
... Earthquakes • The study of earthquakes is called ________________. seismology • Most earthquakes take place near the edges of __________ tectonic ___________. plates • As tectonic plates push, pull, or slip past each other, stress increases along breaks in the Earth’s crust, or ___________. faults ...
... Earthquakes • The study of earthquakes is called ________________. seismology • Most earthquakes take place near the edges of __________ tectonic ___________. plates • As tectonic plates push, pull, or slip past each other, stress increases along breaks in the Earth’s crust, or ___________. faults ...
09_chapter 2
... The Kotri volcanic belt, an equivalent of Dongargarh Group, lies in Bastar district towards south. It is N-S trending, ~250 km long linear belt with width of ~50 km. It consists of bimodal volcanic suite, arkoses and conglomerates, and is intruded by Madanbara granite, which is an equivalent of Dong ...
... The Kotri volcanic belt, an equivalent of Dongargarh Group, lies in Bastar district towards south. It is N-S trending, ~250 km long linear belt with width of ~50 km. It consists of bimodal volcanic suite, arkoses and conglomerates, and is intruded by Madanbara granite, which is an equivalent of Dong ...
A Brief Summary of New England (Massachusetts
... great as 8 km (i.e. Connecticut Valley Border Fault). The western part of Massachusetts consists of rocks that formed on or near the margins of Laurentia in Proterozoic through Ordovician time. Evidence indicates that Laurentia occupied an equatorial position in the early Paleozoic when a thick sequ ...
... great as 8 km (i.e. Connecticut Valley Border Fault). The western part of Massachusetts consists of rocks that formed on or near the margins of Laurentia in Proterozoic through Ordovician time. Evidence indicates that Laurentia occupied an equatorial position in the early Paleozoic when a thick sequ ...
Chp 12.1- Evidence for Continental Drift
... Sea Floor Spreading: An Explanation • Wilson then unified the ideas of Wegener and Hess into the PLATE TECTONIC theory. • Continental drift occurs because of areas like these ridges that PUSH along tectonic plates floating on Earth’s surface. • Geologic HOT SPOTS are anywhere magma rises to Earth’ ...
... Sea Floor Spreading: An Explanation • Wilson then unified the ideas of Wegener and Hess into the PLATE TECTONIC theory. • Continental drift occurs because of areas like these ridges that PUSH along tectonic plates floating on Earth’s surface. • Geologic HOT SPOTS are anywhere magma rises to Earth’ ...
Standard 2 Objective 3 STUDY NOTES
... epicenter of an earthquake is the point • The ________ above the on Earth’s surface directly ______ earthquake’s focus. ...
... epicenter of an earthquake is the point • The ________ above the on Earth’s surface directly ______ earthquake’s focus. ...
G: Glossary
... Gondwana: The hypothetical protocontinent of the Southern Hemisphere, also called Gondwanaland. The preponderance of modem evidence indicates that the present continents are fragments which have been separated from each other by some form of continental displacement with the aid of seafloor spreadin ...
... Gondwana: The hypothetical protocontinent of the Southern Hemisphere, also called Gondwanaland. The preponderance of modem evidence indicates that the present continents are fragments which have been separated from each other by some form of continental displacement with the aid of seafloor spreadin ...
Task to i) Explain how continental drift works to move tectonic plates
... Ocean floor is created when two tectonic plates are moving apart, because hot molten rock rises and creates a ridge. This is called seafloor spreading. ...
... Ocean floor is created when two tectonic plates are moving apart, because hot molten rock rises and creates a ridge. This is called seafloor spreading. ...
Alkaline rocks
... Carbonatite-Nephelinite • Commonly occur in rift zones • Activity begins with silicate magma and ends with carbonatite • Alkaline pyroxenes are common (aegerine) • High-T alteration of host rock yields nepheline, k-spar, Na-amphiboles, Napyroxenes, biotite and carbonate ...
... Carbonatite-Nephelinite • Commonly occur in rift zones • Activity begins with silicate magma and ends with carbonatite • Alkaline pyroxenes are common (aegerine) • High-T alteration of host rock yields nepheline, k-spar, Na-amphiboles, Napyroxenes, biotite and carbonate ...
Earthquakes and volcanoes
... • Another type of subduction zone is when two oceanic plates collide • This forms a trench on the ocean floor • The worlds deepest parts of the ocean are found along trenches – E.g. The Mariana Trench is 11 km deep! ...
... • Another type of subduction zone is when two oceanic plates collide • This forms a trench on the ocean floor • The worlds deepest parts of the ocean are found along trenches – E.g. The Mariana Trench is 11 km deep! ...
The Theory of Plate Tectonics
... that the continents were once a single landmass that drifted apart and are still doing so. ...
... that the continents were once a single landmass that drifted apart and are still doing so. ...
Notes
... The oceanic crust moves about ________________ centimeters per year. The melting crust will become a _______________________________ Oceanic to Oceanic form a ______________________________ zone. When 2 oceanic crusts collide they form an ocean _____________________. Ocean trenches are extremely__ ...
... The oceanic crust moves about ________________ centimeters per year. The melting crust will become a _______________________________ Oceanic to Oceanic form a ______________________________ zone. When 2 oceanic crusts collide they form an ocean _____________________. Ocean trenches are extremely__ ...
App4 GeolHistory
... The Precambrian rocks of the Belt Supergroup that underlie the Flathead Subbasin formed from sediments deposited in and near a large but shallow sea or inland lake during the middle Proterozoic (from roughly 1,600 to 800 million years ago). This large body of water, which may have been similar to to ...
... The Precambrian rocks of the Belt Supergroup that underlie the Flathead Subbasin formed from sediments deposited in and near a large but shallow sea or inland lake during the middle Proterozoic (from roughly 1,600 to 800 million years ago). This large body of water, which may have been similar to to ...
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.