ROCKS and how to identify them
... SEDIMENTARY ROCKS are composed of particles derived from pre-existing rocks or by the crystallization of minerals that were held in solutions. A general characteristic of this group is the layering or stratification, as seen in the outcrop. Those sedimentary rocks that are composed of particles of p ...
... SEDIMENTARY ROCKS are composed of particles derived from pre-existing rocks or by the crystallization of minerals that were held in solutions. A general characteristic of this group is the layering or stratification, as seen in the outcrop. Those sedimentary rocks that are composed of particles of p ...
Click Here to this File
... Sediments are transported and deposited by wind, water, etc. These sediments are compressed and hardened to form layers of rocks. These types of rocks are called Sedimentary Rocks. 19. Features of Sedimentary Rocks? These rocks may also contain fossils of plants, animals and other micro- organisms ...
... Sediments are transported and deposited by wind, water, etc. These sediments are compressed and hardened to form layers of rocks. These types of rocks are called Sedimentary Rocks. 19. Features of Sedimentary Rocks? These rocks may also contain fossils of plants, animals and other micro- organisms ...
Chapter 18: Granitoid Rocks
... “Granitoids” (sensu lato): loosely applied to a wide range of felsic plutonic rocks Focus on non-continental arc intrusives ...
... “Granitoids” (sensu lato): loosely applied to a wide range of felsic plutonic rocks Focus on non-continental arc intrusives ...
Geology of the Hawaiian Islands
... Example: High P/T minerals in a lava change when extruded onto the surface with lower P and T ...
... Example: High P/T minerals in a lava change when extruded onto the surface with lower P and T ...
Metasedimentary rocks, intrusions and deformation history
... A folded, sheet-like body of layered gabbro, leucogabbro and diorite at least 8 km in length and several hundred metres thick occurs at Stendalen, west of outer Nørrearm (Fig. 2; Stendal et al., 1997). Another body comprising similar lithologies, together with homogeneous dolerite or microgabbro, cr ...
... A folded, sheet-like body of layered gabbro, leucogabbro and diorite at least 8 km in length and several hundred metres thick occurs at Stendalen, west of outer Nørrearm (Fig. 2; Stendal et al., 1997). Another body comprising similar lithologies, together with homogeneous dolerite or microgabbro, cr ...
Bowdoinham 25 Quad Sidebar - 2006
... is the Hornbeam Hill Gneiss (Photo 7). Rocks of the Hornbeam Hill Gneiss range in composition from light colored granite to a darker rock called diorite. Smaller lenses of foliated granitic rock (Dfg) are also present. These strongly deformed rocks must have intruded before the main phase of metamor ...
... is the Hornbeam Hill Gneiss (Photo 7). Rocks of the Hornbeam Hill Gneiss range in composition from light colored granite to a darker rock called diorite. Smaller lenses of foliated granitic rock (Dfg) are also present. These strongly deformed rocks must have intruded before the main phase of metamor ...
Crustal Extension
... Valley region, in Special Paper 333: Cenozoic basins of the Death Valley region, Geological Society of America, p. 259–275. Wright, L.A., 1984, Evidence For the Westward Migration of Severe Cenozoic Extension, Southern Great Basin, California, Geological Society of America. ...
... Valley region, in Special Paper 333: Cenozoic basins of the Death Valley region, Geological Society of America, p. 259–275. Wright, L.A., 1984, Evidence For the Westward Migration of Severe Cenozoic Extension, Southern Great Basin, California, Geological Society of America. ...
Part A The Rock Cycle
... 22. Geologists use THIN SECTIONS to examine the minerals in rocks with a special polarized-light microscope. 23. Magmas with high VISCOSITY have great difficulty flowing through narrow cracks or other openings in country rock. 24. If the contacts of a pluton are parallel to the structure of the cou ...
... 22. Geologists use THIN SECTIONS to examine the minerals in rocks with a special polarized-light microscope. 23. Magmas with high VISCOSITY have great difficulty flowing through narrow cracks or other openings in country rock. 24. If the contacts of a pluton are parallel to the structure of the cou ...
GLOSSARY MINERAL – a naturally occurring inorganic element or
... Desert Varnish – a thin, shiny bluish- black coating composed largely or iron and manganese oxides. Dike – an igneous intrusion that cuts across the country rock. Fault – a fracture or fracture zone along which there has been displacement of the sides relative to one another. Fold – a bend in beddin ...
... Desert Varnish – a thin, shiny bluish- black coating composed largely or iron and manganese oxides. Dike – an igneous intrusion that cuts across the country rock. Fault – a fracture or fracture zone along which there has been displacement of the sides relative to one another. Fold – a bend in beddin ...
earth`s crust and isostasy
... - Occurs in areas of _____________________________ where: Mountains and landforms are eroding away. Glacial ice is melting. Lake or sea water is decreasing. - ______________________________ in mass on crust causes it to _______________ until a new point of equilibrium is reached. ...
... - Occurs in areas of _____________________________ where: Mountains and landforms are eroding away. Glacial ice is melting. Lake or sea water is decreasing. - ______________________________ in mass on crust causes it to _______________ until a new point of equilibrium is reached. ...
Southern and Central Appalachians
... the conglomerates clearly were deposited in channels; armoured mudballs have been observed in at least one palaeochannel. Though the Ocoee Supergroup thins gradually southward to near Cartersville, Georgia, its thickness rapidly decreases northward from its maximum of 15 km in the Great Smoky Mounta ...
... the conglomerates clearly were deposited in channels; armoured mudballs have been observed in at least one palaeochannel. Though the Ocoee Supergroup thins gradually southward to near Cartersville, Georgia, its thickness rapidly decreases northward from its maximum of 15 km in the Great Smoky Mounta ...
Quiz 13 on Chapters 13-15 Notes to Landforms, Internal Processes
... next location of these mantle plumes to be ___________. a. east of Hawaii and west of Yellowstone Park b. west of Hawaii and east of Yellowstone Park c. west of Hawaii and west of Yellowstone Park d. east of Hawaii and east of Yellowstone Park e. With ‘hot spots’ all of the options above are very li ...
... next location of these mantle plumes to be ___________. a. east of Hawaii and west of Yellowstone Park b. west of Hawaii and east of Yellowstone Park c. west of Hawaii and west of Yellowstone Park d. east of Hawaii and east of Yellowstone Park e. With ‘hot spots’ all of the options above are very li ...
Regional metamorphism
... covers large areas of continental crust typically associated with mountain ranges, particularly subduction zones or the roots of previously eroded mountains. Conditions producing widespread regionally metamorphosed rocks occur during an orogenic event. ...
... covers large areas of continental crust typically associated with mountain ranges, particularly subduction zones or the roots of previously eroded mountains. Conditions producing widespread regionally metamorphosed rocks occur during an orogenic event. ...
tectonite - Shaileshchaure
... The rocks that are pervaded by cleavage, foliation and/or lineation are known as tectonites. The tectonites are rocks that have flowed in the solid state in such a way that no part of the rock body escaped the distortional influence of flow, at least, when observed at the scale of single hand specim ...
... The rocks that are pervaded by cleavage, foliation and/or lineation are known as tectonites. The tectonites are rocks that have flowed in the solid state in such a way that no part of the rock body escaped the distortional influence of flow, at least, when observed at the scale of single hand specim ...
Earthquake test review 8th grade Earthquake Review for
... ____________________12. Crustal material can be destroyed at a divergent boundary. ____________________13. When two plates containing continental crust collide, mountains are formed. ____________________14. The motion of Earth’s plates is caused by heat. ____________________15. Cooling of the asthen ...
... ____________________12. Crustal material can be destroyed at a divergent boundary. ____________________13. When two plates containing continental crust collide, mountains are formed. ____________________14. The motion of Earth’s plates is caused by heat. ____________________15. Cooling of the asthen ...
The Classification Ability with Naked Eyes According to the
... This study aimed to investigate the classification ability with naked eyes according to the understanding level about rocks of pre-service science teachers. We developed a questionnaire concerning misconception about minerals and rocks. The participant were 132 pre-service science teachers. Data wer ...
... This study aimed to investigate the classification ability with naked eyes according to the understanding level about rocks of pre-service science teachers. We developed a questionnaire concerning misconception about minerals and rocks. The participant were 132 pre-service science teachers. Data wer ...
Compared to the desolate surface of the Moon, Earth must
... C. Rhyolites and Granites Continental hot spots Over subduction zones So the melts are very viscous, so they rarely reach the surface, usually plutonic/intrusive. Rhyolite and granite form by: Melting of crust Heat source from intermediate and mafic magmas. Fractional crystallization and assimilatio ...
... C. Rhyolites and Granites Continental hot spots Over subduction zones So the melts are very viscous, so they rarely reach the surface, usually plutonic/intrusive. Rhyolite and granite form by: Melting of crust Heat source from intermediate and mafic magmas. Fractional crystallization and assimilatio ...
Plate Tectonics slideshow
... Himalayas’ convergent boundary is still active, while Appalachians’ boundary is no longer active (so they are being weathered and eroded) ...
... Himalayas’ convergent boundary is still active, while Appalachians’ boundary is no longer active (so they are being weathered and eroded) ...
The Virgin River Shear Zone in the Careen Lake Area: Field
... plane of extension commonly produces an antithetic rotation of the swell section of the structure. Observations of such rotated structures in this area indicate that the sense of shear was dextral. Offset granitic and pegmatitic dykes and veins were also observed in the area. These late dykes cut·th ...
... plane of extension commonly produces an antithetic rotation of the swell section of the structure. Observations of such rotated structures in this area indicate that the sense of shear was dextral. Offset granitic and pegmatitic dykes and veins were also observed in the area. These late dykes cut·th ...
Outdoor Essentials Landscape Rocks
... in a strong, yet lightweight hollow imitation landscape rock • Perfect for hiding well-heads, junction boxes, irrigation equipment, pumps, compressors and any other unsightly spots in a yard • Wide variety of uses: decorative landscaping, displays, temporary installations and more • Easy to move ...
... in a strong, yet lightweight hollow imitation landscape rock • Perfect for hiding well-heads, junction boxes, irrigation equipment, pumps, compressors and any other unsightly spots in a yard • Wide variety of uses: decorative landscaping, displays, temporary installations and more • Easy to move ...
A Proterozoic mylonite zone in the Kongsberg Series north of
... protomylonites and no major movement zone. These small-scale displacements on many planes suggest that, despite some movement (and minor transpositions during metamorphism and defor mation) there may be more of an original stratigraphic sequence in the north, with the western Kongsberg Series supra ...
... protomylonites and no major movement zone. These small-scale displacements on many planes suggest that, despite some movement (and minor transpositions during metamorphism and defor mation) there may be more of an original stratigraphic sequence in the north, with the western Kongsberg Series supra ...
Evidence for Continental Drift
... carry the continents with them. Many volcanoes and earthquake zones on a map reveal the boundaries between the plates. Chains of volcanic islands, such as the Hawaiian Islands, reveal where tectonic plates have passed over geological hot spots – areas where molten rock has risen to Earth’s surface. ...
... carry the continents with them. Many volcanoes and earthquake zones on a map reveal the boundaries between the plates. Chains of volcanic islands, such as the Hawaiian Islands, reveal where tectonic plates have passed over geological hot spots – areas where molten rock has risen to Earth’s surface. ...
Notes for the Test Word Definition Pangaea Pangaea is the name
... Contour lines: tell us the elevation, or height from sea level. Contour interval: the distance represented between each contour ...
... Contour lines: tell us the elevation, or height from sea level. Contour interval: the distance represented between each contour ...
rift valleys - WordPress.com
... The rift valleys are enormous fractures affecting the continental plates that widen progressively with time: they represent the first stages in the complex process of extension and rupture of continents and anticipate the development of new oceanic basins between them. The process is related to the ...
... The rift valleys are enormous fractures affecting the continental plates that widen progressively with time: they represent the first stages in the complex process of extension and rupture of continents and anticipate the development of new oceanic basins between them. The process is related to the ...
Notes on Metamorphic Rocks and Deformation of Crust Mountains
... Vocabulary List (Number, write and define these words on another sheet of paper, those that have a * please illustrate, be creative!) (35) metamorphic rock metamorphism contact metamorphism foliated* unfoliated fault metamorphic rocks anticline* dome mountain* fault plane compression fault-block mou ...
... Vocabulary List (Number, write and define these words on another sheet of paper, those that have a * please illustrate, be creative!) (35) metamorphic rock metamorphism contact metamorphism foliated* unfoliated fault metamorphic rocks anticline* dome mountain* fault plane compression fault-block mou ...
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.