Terra Nova 2012 Jagoutz
... the general characteristics of Archean TTG and GG rocks with modern arc GG-type granitoid compositions to understand the important chemical differences between the two rock sequences. Figure 2 illustrates the average composition of the Archean TTG and GG sequence compared to modern average granitoid ...
... the general characteristics of Archean TTG and GG rocks with modern arc GG-type granitoid compositions to understand the important chemical differences between the two rock sequences. Figure 2 illustrates the average composition of the Archean TTG and GG sequence compared to modern average granitoid ...
Learning Targets Answer Key
... created by the heat from Earth’s inner and outer core. 4. What are Earth’s tectonic plates? The tectonic plates are the broken slabs of Earth’s lithosphere that slowly move because of plate tectonics 5. What was the early hypothesis of Continental Drift? Who first proposed this hypothesis? Continent ...
... created by the heat from Earth’s inner and outer core. 4. What are Earth’s tectonic plates? The tectonic plates are the broken slabs of Earth’s lithosphere that slowly move because of plate tectonics 5. What was the early hypothesis of Continental Drift? Who first proposed this hypothesis? Continent ...
Geology 111 - A8 - New ideas on continental drift
... (creating mountains like Garibaldi, Baker, St. Helens, Ranier, Hood and Shasta – collectively known as the Cascade Range). c) Continent-continent A continent-continent collision occurs when a continent or large island has been moved along with oceanic crust (which was being subducted under another c ...
... (creating mountains like Garibaldi, Baker, St. Helens, Ranier, Hood and Shasta – collectively known as the Cascade Range). c) Continent-continent A continent-continent collision occurs when a continent or large island has been moved along with oceanic crust (which was being subducted under another c ...
PETLAB4-14
... PETROLOGY LAB 4: Plutonic Igneous Rocks Plutonic rocks occur in intrusions that have crystallized within the Earth’s crust or at the crustmantle boundary. They are commonly recognized by their coarser grain-size in comparison to volcanic rocks, indicating crystallization at slower cooling rates. Plu ...
... PETROLOGY LAB 4: Plutonic Igneous Rocks Plutonic rocks occur in intrusions that have crystallized within the Earth’s crust or at the crustmantle boundary. They are commonly recognized by their coarser grain-size in comparison to volcanic rocks, indicating crystallization at slower cooling rates. Plu ...
Geological Society of America Bulletin
... The Archean rocks of the Wind River Range in western Wyoming record a Late Archean history of plutonism that extends for more than 250 m.y. The range is dominated by granitic plutons, including the 2.8 Ga Native Lake gneiss, the 2.67 Ga Bridger batholith, the 2.63 Ga Louis Lake batholith, and late 2 ...
... The Archean rocks of the Wind River Range in western Wyoming record a Late Archean history of plutonism that extends for more than 250 m.y. The range is dominated by granitic plutons, including the 2.8 Ga Native Lake gneiss, the 2.67 Ga Bridger batholith, the 2.63 Ga Louis Lake batholith, and late 2 ...
Igneous Rock - East Hanover Township School District
... D) Basaltic lava is fluid and flows freely from volcanoes in Hawaii, such as Kilauea. E) Basalt is the most common rock type in the Earth's crust (the outer 10 to 50 km). In fact, most of the ocean floor is made of basalt ...
... D) Basaltic lava is fluid and flows freely from volcanoes in Hawaii, such as Kilauea. E) Basalt is the most common rock type in the Earth's crust (the outer 10 to 50 km). In fact, most of the ocean floor is made of basalt ...
Tectonic Forces and Geologic Structures
... – Fracture in rock along which there has been no offset. ...
... – Fracture in rock along which there has been no offset. ...
Structural setting of the neo archean terrains in the - HAL
... Lithological and structural maps from the East Commonwealth Bay Unit (ECB; Terre Adélie and Georges V land, Antarctica) are presented with a summary of the main structural and metamorphic data obtained in the area. The ECB unit is structured during the Late Archean – Lower Proterozoic (at 2.4-2.5 Ga ...
... Lithological and structural maps from the East Commonwealth Bay Unit (ECB; Terre Adélie and Georges V land, Antarctica) are presented with a summary of the main structural and metamorphic data obtained in the area. The ECB unit is structured during the Late Archean – Lower Proterozoic (at 2.4-2.5 Ga ...
The Late Paleozoic Era
... • Kaskasia transgression starts in Devonian, continues to the end of the Mississippian • Absaroka transgression begins in Pennsylvanian, continues to Triassic ...
... • Kaskasia transgression starts in Devonian, continues to the end of the Mississippian • Absaroka transgression begins in Pennsylvanian, continues to Triassic ...
Plate Tectonics Crust Tab
... Part 1: Describing differences between oceanic and continental plates 1. Open the Plate Tectonics simulation by clicking on the icon on your desktop. 2. Play with the sim (both tabs) for 5 minutes. Mov ...
... Part 1: Describing differences between oceanic and continental plates 1. Open the Plate Tectonics simulation by clicking on the icon on your desktop. 2. Play with the sim (both tabs) for 5 minutes. Mov ...
Name: Section: Date: Plate Tectonics Learning Goals:
... Part 1: Describing differences between oceanic and continental plates 1. Open the Plate Tectonics simulation by clicking on the icon on your desktop. 2. Play with the sim (both tabs) for 5 minutes. Move all dials and buttons! Notice that the thermometer, ruler and density tool (dial) can be dragged ...
... Part 1: Describing differences between oceanic and continental plates 1. Open the Plate Tectonics simulation by clicking on the icon on your desktop. 2. Play with the sim (both tabs) for 5 minutes. Move all dials and buttons! Notice that the thermometer, ruler and density tool (dial) can be dragged ...
EGU2017-5486 - CO Meeting Organizer
... typical of the oceanic crust. Subsidence of oceanic crust formed at the axis of spreading continues 80 Myr at a rate rapidly decreasing in time. In the North Barents Basin intense subsidence continued 220 Myr since the Late Devonian and until the Late Jurassic. Moreover, about two thirds of the subs ...
... typical of the oceanic crust. Subsidence of oceanic crust formed at the axis of spreading continues 80 Myr at a rate rapidly decreasing in time. In the North Barents Basin intense subsidence continued 220 Myr since the Late Devonian and until the Late Jurassic. Moreover, about two thirds of the subs ...
PETROLOGICAL COMPARISON BETWEEN THE SUNLIGHT AND
... while others indicate some minor enrichment of Cu. The geochemical signatures and petrographic observations are verified with data from X-ray diffraction indicating feldspathoid minerals and alteration products where K2O compositions were high and feldspar varieties that are congruent with Na and Ca ...
... while others indicate some minor enrichment of Cu. The geochemical signatures and petrographic observations are verified with data from X-ray diffraction indicating feldspathoid minerals and alteration products where K2O compositions were high and feldspar varieties that are congruent with Na and Ca ...
Fields of Science
... Joints are breaks in bedrock along which no movement has occurred. They can provide channels for fluids. Groundwater that flow through them and dissolves limestone can cause cavern formation. ...
... Joints are breaks in bedrock along which no movement has occurred. They can provide channels for fluids. Groundwater that flow through them and dissolves limestone can cause cavern formation. ...
INTRUSION-RELATED DEPOSITS
... of known reserves; generally of Precambrian age. PGEs may be the primary product (PGE-enriched chromitites). ii) Podiform: (Alpine-type)…ophiolite complexes associated with orogenic belts, account for 55% of world production, generally Paleozoic or younger. ...
... of known reserves; generally of Precambrian age. PGEs may be the primary product (PGE-enriched chromitites). ii) Podiform: (Alpine-type)…ophiolite complexes associated with orogenic belts, account for 55% of world production, generally Paleozoic or younger. ...
Dynamic Planet
... Uniformitarianism: “The same physical processes active in the environment today have been operating throughout geologic time” Hutton (1795), Lyell (1830) ...
... Uniformitarianism: “The same physical processes active in the environment today have been operating throughout geologic time” Hutton (1795), Lyell (1830) ...
Geology and petrography of Adolerite dyke, Hyderabad granitic
... The present study of petrography of a dyke and the geology of the study area revels that dyke with dolerite composition intruded where the granitic rocks were dominated in continental crust. The continental crust made up of granitic rocksnaturally they have brittle nature when they undergo high pres ...
... The present study of petrography of a dyke and the geology of the study area revels that dyke with dolerite composition intruded where the granitic rocks were dominated in continental crust. The continental crust made up of granitic rocksnaturally they have brittle nature when they undergo high pres ...
pssa questions- plate tectonics and earthquakes
... b. hot spots forming on continents c. magnetic reversals of the north and south poles d. convection currents in the mantle ...
... b. hot spots forming on continents c. magnetic reversals of the north and south poles d. convection currents in the mantle ...
The French Massif Central is the south-vergent
... while metatexites in the core with an assemblage biotite + fibrolite + cordierite(?) are up-grade from the muscovite-out isograd and indicate temperatures over 650 C. The metamorphic grade also increases from east to west in Le Caroux. Unfortunately, the low-Al bulk composition of these rocks does ...
... while metatexites in the core with an assemblage biotite + fibrolite + cordierite(?) are up-grade from the muscovite-out isograd and indicate temperatures over 650 C. The metamorphic grade also increases from east to west in Le Caroux. Unfortunately, the low-Al bulk composition of these rocks does ...
Geological, mineralogical and petrographical features of the
... The NE-SW oriented Karabiga metamorphic rocks located on the northern part of the Biga Peninsula form one of prominent metamorphic rocks of this region. This region shows homogeneous metamorphic rock association with petrographical, mineralogical and field occurrences. Although Karabiga metamorphic ...
... The NE-SW oriented Karabiga metamorphic rocks located on the northern part of the Biga Peninsula form one of prominent metamorphic rocks of this region. This region shows homogeneous metamorphic rock association with petrographical, mineralogical and field occurrences. Although Karabiga metamorphic ...
Student 1
... The Event: Shallow intrusive rocks with some extrusive rocks make up the Park Volcanic Group in SE Southland. They exist in rocks of the Triassic-Jurassic age. They include andesites, dacites and some ignimbrite. The rocks are primarily andesites and suggest emplacement in a back arc setting near an ...
... The Event: Shallow intrusive rocks with some extrusive rocks make up the Park Volcanic Group in SE Southland. They exist in rocks of the Triassic-Jurassic age. They include andesites, dacites and some ignimbrite. The rocks are primarily andesites and suggest emplacement in a back arc setting near an ...
Thermochronology of the Trans
... orogen, being sure to sample each of the terranes within it. A total of 110 samples, comprising plutons, pegmatites, and metasedimentary rocks were collected. Metavolcanic rocks were not sampled because it is considered unlikely that, other than zircon, they would not yield the minerals needed (as o ...
... orogen, being sure to sample each of the terranes within it. A total of 110 samples, comprising plutons, pegmatites, and metasedimentary rocks were collected. Metavolcanic rocks were not sampled because it is considered unlikely that, other than zircon, they would not yield the minerals needed (as o ...
Section 1: Continental Drift
... • rifting the process by which Earth’s crust breaks apart; can occur within continental crust or oceanic crust • Slow movements of tectonic plates change the size and shape of the continents over millions of years. • All of the continents that exist today contain large areas of stable rock, called c ...
... • rifting the process by which Earth’s crust breaks apart; can occur within continental crust or oceanic crust • Slow movements of tectonic plates change the size and shape of the continents over millions of years. • All of the continents that exist today contain large areas of stable rock, called c ...
class outline - WordPress.com
... and prior lesson content (slides 5,6). The video covers much of the information related to transform boundaries. We typically present a couple of review slides and move on to discussions of rates of plate motions, supercontinent cycles, and the tectonic evolution of North America. (As an alternative ...
... and prior lesson content (slides 5,6). The video covers much of the information related to transform boundaries. We typically present a couple of review slides and move on to discussions of rates of plate motions, supercontinent cycles, and the tectonic evolution of North America. (As an alternative ...
Phet Plate Tectonics Inquiry
... Follow Up Question: Where does the “New Crust” come from? Where does the “old crust” go? ...
... Follow Up Question: Where does the “New Crust” come from? Where does the “old crust” go? ...
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.