Plate Tectonic Theory
... • Low density (felsic) continental rocks pushed upward by compressive tectonic forces – Medium to high grade metamorphism – Earth’s highest mountain ranges • Examples: Himalayas, Appalachians ...
... • Low density (felsic) continental rocks pushed upward by compressive tectonic forces – Medium to high grade metamorphism – Earth’s highest mountain ranges • Examples: Himalayas, Appalachians ...
Restless Earth Part 1: How and why do the earths tectonic plates
... Restless Earth Part 1: How and why do the earths tectonic plates move? I know the different layers of the earth and their features. I understand how the earth’s core generates heat and convection currents that move plates. I know the different properties of continental and oceanic crust. I know what ...
... Restless Earth Part 1: How and why do the earths tectonic plates move? I know the different layers of the earth and their features. I understand how the earth’s core generates heat and convection currents that move plates. I know the different properties of continental and oceanic crust. I know what ...
Oceanography Worksheet #1
... The diagram below represents a landscape in which sediments were deposited by a continental glacier. Letters A, B, C, D, and E represent locations in this area. ...
... The diagram below represents a landscape in which sediments were deposited by a continental glacier. Letters A, B, C, D, and E represent locations in this area. ...
The Structure of the Earth and Plate Tectonics
... Ocean-Ocean Plate Collision • WHEN TWO OCEANIC PLATES COLLIDE, ONE RUNS OVER THE OTHER WHICH CAUSES IT TO SINK INTO THE MANTLE FORMING A SUBDUCTION ZONE. • THE SUBDUCTING PLATE IS BENT DOWNWARD TO FORM A VERY DEEP DEPRESSION IN THE OCEAN FLOOR CALLED A TRENCH. • THE WORLDS DEEPEST PARTS OF THE OCEA ...
... Ocean-Ocean Plate Collision • WHEN TWO OCEANIC PLATES COLLIDE, ONE RUNS OVER THE OTHER WHICH CAUSES IT TO SINK INTO THE MANTLE FORMING A SUBDUCTION ZONE. • THE SUBDUCTING PLATE IS BENT DOWNWARD TO FORM A VERY DEEP DEPRESSION IN THE OCEAN FLOOR CALLED A TRENCH. • THE WORLDS DEEPEST PARTS OF THE OCEA ...
Archean
... radiation in the upper atmosphere • The radiation disrupts water molecules and releases their oxygen and hydrogen • This could account for 2% of present-day oxygen • but with 2% oxygen, ozone forms, creating a barrier ...
... radiation in the upper atmosphere • The radiation disrupts water molecules and releases their oxygen and hydrogen • This could account for 2% of present-day oxygen • but with 2% oxygen, ozone forms, creating a barrier ...
8.E.1 Vocab - Schoolwires.net
... Tectonic Plates – giant chunks of land or ocean floor in which the lithosphere is broken up into plates Theory of Plate Tectonics – a theory that states that Earth’s lithosphere, or land, is broken into large sections called tectonic plates that move and change position over time (aka continental dr ...
... Tectonic Plates – giant chunks of land or ocean floor in which the lithosphere is broken up into plates Theory of Plate Tectonics – a theory that states that Earth’s lithosphere, or land, is broken into large sections called tectonic plates that move and change position over time (aka continental dr ...
Powerpoint
... The area of active deformation (which is unusually wide in the western U.S.) occurs both at the plate margin and where intense magmatism occurred recently (in the Basin and Range). Only the western portion of the high gPE area is extending, which argues that the deforming area is relatively weak. Th ...
... The area of active deformation (which is unusually wide in the western U.S.) occurs both at the plate margin and where intense magmatism occurred recently (in the Basin and Range). Only the western portion of the high gPE area is extending, which argues that the deforming area is relatively weak. Th ...
... New field data, geochemical analyses and zircon U-Pb LA-ICP MS data were obtained on plutonic and volcanic rocks of the Mocoa Batholith and Saldaña Formation in southern Colombia Putumayo region. Results suggest that the plutonic and volcanic activities are closely related to a common magmatic histo ...
7.0 GEOLOGIC SETTING 7.1 Regional Geologic Setting 7.2
... The Geovic project area is mainly underlain by rocks of the Intermediate Series, including the MbalmayoBengbis “Series” or Unit. These rocks are principally chloritic and sericitic schists and quartzites (see Figure 7-1, Regional geology, and Figure 7-2, Regional stratigraphy). Also included in the ...
... The Geovic project area is mainly underlain by rocks of the Intermediate Series, including the MbalmayoBengbis “Series” or Unit. These rocks are principally chloritic and sericitic schists and quartzites (see Figure 7-1, Regional geology, and Figure 7-2, Regional stratigraphy). Also included in the ...
Plate Boundaries
... When 2 continental plates collide Only part of one continent subducts Causes folded mountains to form (ex. Himalayas) Mts are folded along the margins Composed of metamorphosed sedimentary rock Other examples Alps, Urals, Appalachians ...
... When 2 continental plates collide Only part of one continent subducts Causes folded mountains to form (ex. Himalayas) Mts are folded along the margins Composed of metamorphosed sedimentary rock Other examples Alps, Urals, Appalachians ...
Computer Lab Day
... 4. Determine whether each of the following is likely to occur at convergent or divergent boundaries a. rift valley divergent boundary c. mid-ocean ridge divergent boundary b. continental mountains convergent d. ocean trench convergent boundary ...
... 4. Determine whether each of the following is likely to occur at convergent or divergent boundaries a. rift valley divergent boundary c. mid-ocean ridge divergent boundary b. continental mountains convergent d. ocean trench convergent boundary ...
Archean Plate Tectonics: Isotopic Evidence from Samples of the
... Low-T O isotopes in eclogites C & N isotopes in diamond + Os isotopes in sulfide inclusions MIF sulfur in sulfide inclusions ...
... Low-T O isotopes in eclogites C & N isotopes in diamond + Os isotopes in sulfide inclusions MIF sulfur in sulfide inclusions ...
Continental rifting on Earth and Mars - A comparison
... The formation of continental rift systems on Earth is connected to prerift uplift generated by upwelling mantle plumes and extensional stresses which originate from remote plate boundary forces. Continental rifting and continental breakup on Earth are therefore intimately connected to Earth’s plate ...
... The formation of continental rift systems on Earth is connected to prerift uplift generated by upwelling mantle plumes and extensional stresses which originate from remote plate boundary forces. Continental rifting and continental breakup on Earth are therefore intimately connected to Earth’s plate ...
Geology of Howth
... Their shells and bones which were made up of the mineral calcium carbonate built up to form sedimentary rocks known as limestones. There are different types of limestones in the Howth and Sutton areas because the sea in which they were deposited changed through time. Most of the limestones are rich ...
... Their shells and bones which were made up of the mineral calcium carbonate built up to form sedimentary rocks known as limestones. There are different types of limestones in the Howth and Sutton areas because the sea in which they were deposited changed through time. Most of the limestones are rich ...
Presentation_Olivia_..
... Three major faults have been recognised, namely the Main Boundary Thrust, the Main Central Thrust and the South Tibetan Detachment (going from South to North). The three faults sole into the Main Himalayan Thrust (MHT), a detachment surface along which major historical earthquakes tend to occur, suc ...
... Three major faults have been recognised, namely the Main Boundary Thrust, the Main Central Thrust and the South Tibetan Detachment (going from South to North). The three faults sole into the Main Himalayan Thrust (MHT), a detachment surface along which major historical earthquakes tend to occur, suc ...
Plate Tectonics Review
... 1. The Theory of Plate Tectonics combines Continental Drift with the processes of ____________________ & ____________________. 2. Lithospheric Plates includes the two types of crust (______________ or _______________) and the upper rigid part of the mantle. 3. Oceanic Crust is ______________________ ...
... 1. The Theory of Plate Tectonics combines Continental Drift with the processes of ____________________ & ____________________. 2. Lithospheric Plates includes the two types of crust (______________ or _______________) and the upper rigid part of the mantle. 3. Oceanic Crust is ______________________ ...
2 Precambrian Geology
... • Volcanic arcs add land to protocontinents. •Increasing amounts of Felsic continental material ...
... • Volcanic arcs add land to protocontinents. •Increasing amounts of Felsic continental material ...
File
... 8. The noise from the explosion of Krakatoa, a _____________ island in Indonesia that blew up in 1883, was so loud that it was heard 3000 miles away. 9. Japan is made up of a volcanic island chain where two ______________ plates converge or come together on the ocean floor. ...
... 8. The noise from the explosion of Krakatoa, a _____________ island in Indonesia that blew up in 1883, was so loud that it was heard 3000 miles away. 9. Japan is made up of a volcanic island chain where two ______________ plates converge or come together on the ocean floor. ...
Minnesota Rocks box - University of Minnesota Duluth
... Magma that stays beneath the earth’s surface cools more slowly forming coarse-grained intrusive igneous rocks such as gabbro and granite (Fig. 2). Gabbro contains visible crystals of the minerals plagioclase (gray), plus pyroxene and hornblende, both Fe-Mg silicates that are nearly black. The intrus ...
... Magma that stays beneath the earth’s surface cools more slowly forming coarse-grained intrusive igneous rocks such as gabbro and granite (Fig. 2). Gabbro contains visible crystals of the minerals plagioclase (gray), plus pyroxene and hornblende, both Fe-Mg silicates that are nearly black. The intrus ...
What happens at tectonic plate boundaries?
... Magnetic reversals occur, flipping the orientation of the North and South pole When iron rich lavas cool, they become slightly but permanently magnetized in the direction of Earth’s magnetic field This is thermoremanent magnetization ...
... Magnetic reversals occur, flipping the orientation of the North and South pole When iron rich lavas cool, they become slightly but permanently magnetized in the direction of Earth’s magnetic field This is thermoremanent magnetization ...
!GLG 101-Illustrated Vocabulary-Chapter 18 !Plate Tectonics
... Structurally, these islands are an island arc adjacent to a subduction zone. !allochthonous terrane *a large mass of land that has moved a substantial distance before reaching its present position as part of a continent. !Alps *a prominent mountain range in southern Europe !Andes Mountains of South ...
... Structurally, these islands are an island arc adjacent to a subduction zone. !allochthonous terrane *a large mass of land that has moved a substantial distance before reaching its present position as part of a continent. !Alps *a prominent mountain range in southern Europe !Andes Mountains of South ...
Quiz 3
... Fossils can be preserved in a number of ways. Explain three general ways of preservation OR describe three classes of fossils based on preservation. (9) ...
... Fossils can be preserved in a number of ways. Explain three general ways of preservation OR describe three classes of fossils based on preservation. (9) ...
Geology :: 7. Plate interiors
... The abyssal plains are found at depths between 3,000 and 6,000 meters. Lying generally between the foot of a continental rise and a mid-ocean ridge, abyssal plains cover more than 50% of the Earth’s surface. They are among the flattest, smoothest and least explored regions on Earth. Abyssal plains a ...
... The abyssal plains are found at depths between 3,000 and 6,000 meters. Lying generally between the foot of a continental rise and a mid-ocean ridge, abyssal plains cover more than 50% of the Earth’s surface. They are among the flattest, smoothest and least explored regions on Earth. Abyssal plains a ...
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.