The Rio Grande Trough Near Albuquerque, New Mexico
... part with scarps along the mountain fronts, and with the projection of the Hubble Springs fault (Kelley, 1954). As some of the steeper gradients are several miles farther west, parts of the main fault zone are evidently covered by consolidated material. A fault zone also bounds the west side of the ...
... part with scarps along the mountain fronts, and with the projection of the Hubble Springs fault (Kelley, 1954). As some of the steeper gradients are several miles farther west, parts of the main fault zone are evidently covered by consolidated material. A fault zone also bounds the west side of the ...
Plate Tectonics and Continental Drift
... b. When it split apart it separated into two parts with the proto-Atlantic between them (called Tethys Sea). ...
... b. When it split apart it separated into two parts with the proto-Atlantic between them (called Tethys Sea). ...
3.4 Metamorphic Rocks
... paragraph that explains the major differences and similarities among the three major rock groups. ...
... paragraph that explains the major differences and similarities among the three major rock groups. ...
chapter 2 - earthjay science
... Mesozoic rifting include Triassic rifting of eastern North America and Gondwanaland and the Jurassic-Cretaceous rifting of South America and Africa. 2. The Triassic Newark Group of the east coast of North America was formed in a tensional stress environment that caused rifting with associated normal ...
... Mesozoic rifting include Triassic rifting of eastern North America and Gondwanaland and the Jurassic-Cretaceous rifting of South America and Africa. 2. The Triassic Newark Group of the east coast of North America was formed in a tensional stress environment that caused rifting with associated normal ...
Chapter 7 Answers
... normal faults occur and fault-block mountains form when the large blocks of the Earth’s crust drop down relative to the other blocks. 47. Volcano’s usually form at convergent boundaries when the molten rock erupts into the Earth’s surface. Volcano’s form from this new material that is added to the E ...
... normal faults occur and fault-block mountains form when the large blocks of the Earth’s crust drop down relative to the other blocks. 47. Volcano’s usually form at convergent boundaries when the molten rock erupts into the Earth’s surface. Volcano’s form from this new material that is added to the E ...
Volcanoes and Igneous Activity Earth - Chapter 4
... 2. Intrusive magma flows onto the Earth's surface and cools very slowly, allowing many small mineral grains to grow. 3. The extrusive magma cools quickly so the mineral grains do not have time to grow. 4. The extrusive magma, because it is deep below the surface, cools very slowly, producing very sm ...
... 2. Intrusive magma flows onto the Earth's surface and cools very slowly, allowing many small mineral grains to grow. 3. The extrusive magma cools quickly so the mineral grains do not have time to grow. 4. The extrusive magma, because it is deep below the surface, cools very slowly, producing very sm ...
Slide 1
... OROGENESIS (Mountain Building) 2. Deformation and Uplift C. Upwarped Mountains Large area of continent is domed up. Very little deformation of rocks. Located far from plate boundaries. Not exactly sure how they form. Example: Adirondack Mountains, NY ...
... OROGENESIS (Mountain Building) 2. Deformation and Uplift C. Upwarped Mountains Large area of continent is domed up. Very little deformation of rocks. Located far from plate boundaries. Not exactly sure how they form. Example: Adirondack Mountains, NY ...
dynamic planet: earthquakes, volcanoes, and plate tectonics
... Large masses of magma deep in the earth are called plutons, named for pluto, god of the lower world. As magma in these plutons seeps vertically and horizontally through fissures in overlaying rock layers they solidify to form land forms we call dikes if they cut across layers of overlying rock and s ...
... Large masses of magma deep in the earth are called plutons, named for pluto, god of the lower world. As magma in these plutons seeps vertically and horizontally through fissures in overlaying rock layers they solidify to form land forms we call dikes if they cut across layers of overlying rock and s ...
A Proterozoic mylonite zone in the Kongsberg Series north of
... At Hassel gruver (Fig. l) gabbros and thin concordant amphibolites have caused a heavy magnetite - hematite impregnation of ultramylo nite and mylonite. Quartz recrystallisation oc curred in places and there were sporadic over growths of muscovite and biotite. The northerly dissipation of the ult ...
... At Hassel gruver (Fig. l) gabbros and thin concordant amphibolites have caused a heavy magnetite - hematite impregnation of ultramylo nite and mylonite. Quartz recrystallisation oc curred in places and there were sporadic over growths of muscovite and biotite. The northerly dissipation of the ult ...
Outstanding geologic feature of Pennsylvania—Goat Hill
... areas have the quite common and hearty greenbrier. The result is an exceptional landscape for Pennsylvania. The geologic history of these rocks is complex. The large masses of serpentinite originally formed as layers of olivinerich rocks in large igneous intrusions associated with volcanic arcs in t ...
... areas have the quite common and hearty greenbrier. The result is an exceptional landscape for Pennsylvania. The geologic history of these rocks is complex. The large masses of serpentinite originally formed as layers of olivinerich rocks in large igneous intrusions associated with volcanic arcs in t ...
Unit 4 Chapter 11
... Fault Block Mountains and Grabens Parts of the crust are stretched and broken into large blocks, faulting may cause them to tilt and drop relative to other blocks. Sierra Nevada range of California is this type of mountain. Graben- a long narrow valley usually found opposite a fault block ...
... Fault Block Mountains and Grabens Parts of the crust are stretched and broken into large blocks, faulting may cause them to tilt and drop relative to other blocks. Sierra Nevada range of California is this type of mountain. Graben- a long narrow valley usually found opposite a fault block ...
Geologic Trips San Francisco and the Bay Area
... Coast Ranges into many large blocks. Some of these blocks continued to be uplifted whereas other subsided. Still others went up and then changed their minds and went down. The high blocks became mountain ranges. Sedimentary rocks were deposited in the low basin areas between the high blocks. Sedimen ...
... Coast Ranges into many large blocks. Some of these blocks continued to be uplifted whereas other subsided. Still others went up and then changed their minds and went down. The high blocks became mountain ranges. Sedimentary rocks were deposited in the low basin areas between the high blocks. Sedimen ...
Wilson Cycle Guide - James Madison University
... granodiorite – enriched in sodium, potassium and silica-rich minerals, such as alkali feldspar, sodium plagioclase, and quartz, and depleted in iron/magnesium, silica poor minerals, such as olivine, pyroxene, and amphibole. Locations: The majority of the continent shows very little relief, with the ...
... granodiorite – enriched in sodium, potassium and silica-rich minerals, such as alkali feldspar, sodium plagioclase, and quartz, and depleted in iron/magnesium, silica poor minerals, such as olivine, pyroxene, and amphibole. Locations: The majority of the continent shows very little relief, with the ...
Ch_19_earthquakes.ppt
... of faults: ■ Reverse faults are fractures that form as a result of horizontal compression. ■ Normal faults are fractures caused by horizontal tension. ■ Strike-slip faults are fractures caused by horizontal shear. ...
... of faults: ■ Reverse faults are fractures that form as a result of horizontal compression. ■ Normal faults are fractures caused by horizontal tension. ■ Strike-slip faults are fractures caused by horizontal shear. ...
Turning Sediment into Rock
... – Both are composed of particles greater than 2mm in diameter (gravel) with sand, silt, and clay particles between. – Particles are large enough to identify distinctive rock types and therefore source rocks. – Gravels accumulate in a variety of environments and typically indicate steep slopes and/or ...
... – Both are composed of particles greater than 2mm in diameter (gravel) with sand, silt, and clay particles between. – Particles are large enough to identify distinctive rock types and therefore source rocks. – Gravels accumulate in a variety of environments and typically indicate steep slopes and/or ...
Notes class_5_6_7
... A triple junction of rifts is the typical configuration of rifts. In order for the continent to break apart two of the rifts must succeed in developing oceanic crust. The third rif t may continue to break up the continent or it may stop in which case a rift is left behind. These usually become the l ...
... A triple junction of rifts is the typical configuration of rifts. In order for the continent to break apart two of the rifts must succeed in developing oceanic crust. The third rif t may continue to break up the continent or it may stop in which case a rift is left behind. These usually become the l ...
The Uplifting Experience of Utah`s Henry Mountains: A Sill Lee Way
... “pools” intrusive igneous rock that cored the mountain as laccoliths. Laccoliths (in the lower right picture) are somewhat large intrusions of magma injected at shallow depths between sedimentary rock layers that resulted in uplift (doming) and folding of the preexisting rock strata above the intrus ...
... “pools” intrusive igneous rock that cored the mountain as laccoliths. Laccoliths (in the lower right picture) are somewhat large intrusions of magma injected at shallow depths between sedimentary rock layers that resulted in uplift (doming) and folding of the preexisting rock strata above the intrus ...
Sea-Floor Spreading
... ocean floors move like conveyor belts, carrying the continents along with them. ...
... ocean floors move like conveyor belts, carrying the continents along with them. ...
COWLEY COLLEGE
... Differentiate between the relative geologic time scale and the absolute geologic time scale. Describe how rock units in separate areas are correlated through the methods of physical continuity, stratographic position, similarity of rocks, and comparison of fossils. Explain the evidence for the age o ...
... Differentiate between the relative geologic time scale and the absolute geologic time scale. Describe how rock units in separate areas are correlated through the methods of physical continuity, stratographic position, similarity of rocks, and comparison of fossils. Explain the evidence for the age o ...
Click www.ondix.com to visit our student-to
... year at a Richter scale of 1, to one every few years at a Richter scale of about 8. Faults are produced when rock strata are stressed beyond their limits, forming cracks in the crust. These cracks are fault zones where crustal movement is taking place. There are three types of faults shown in Figur ...
... year at a Richter scale of 1, to one every few years at a Richter scale of about 8. Faults are produced when rock strata are stressed beyond their limits, forming cracks in the crust. These cracks are fault zones where crustal movement is taking place. There are three types of faults shown in Figur ...
File
... have thought for many years that the continents, mountains and oceans had never changed since the birth of the planet. At the beginning of the 20th century, Alfred Wegener, studied a number of clues that led him to hypothesize that the continents are moving. He observed many maps and noticed that So ...
... have thought for many years that the continents, mountains and oceans had never changed since the birth of the planet. At the beginning of the 20th century, Alfred Wegener, studied a number of clues that led him to hypothesize that the continents are moving. He observed many maps and noticed that So ...
Nesosilicates
... Where X could be Fe2+, Mg, Mn2+ or Ca, all in octahedral coordination. The two sites occupied by X cations are known as the M1 & M2 sites. Although Fe and Mg substitute freely for one another in these 2 sites, the M1 site is more distorted as a result of tetrahedra sharing edges (Fig. 1). In the min ...
... Where X could be Fe2+, Mg, Mn2+ or Ca, all in octahedral coordination. The two sites occupied by X cations are known as the M1 & M2 sites. Although Fe and Mg substitute freely for one another in these 2 sites, the M1 site is more distorted as a result of tetrahedra sharing edges (Fig. 1). In the min ...
My PP Ch 22 and 24 Pt II
... Pacific and Phillipine Plates collide Formation of volcanic islands or arcs Subduction plate mantle rock melts comes to the surface and cools Oceanic – Continental Oceanic basaltic plate (more dense) subducts under granitic continental plate Mantle rock melts, magma rises and cools forms ...
... Pacific and Phillipine Plates collide Formation of volcanic islands or arcs Subduction plate mantle rock melts comes to the surface and cools Oceanic – Continental Oceanic basaltic plate (more dense) subducts under granitic continental plate Mantle rock melts, magma rises and cools forms ...
KEY
... A. The sea floor had split and spread away from its ridges. B. The ocean floor had spread toward continents but the continents remained stationary. C. Continents, not ocean floor, had pulled apart. D. None of the above 41. Mountain ranges are produced from A. divergent plate boundaries. B. convergen ...
... A. The sea floor had split and spread away from its ridges. B. The ocean floor had spread toward continents but the continents remained stationary. C. Continents, not ocean floor, had pulled apart. D. None of the above 41. Mountain ranges are produced from A. divergent plate boundaries. B. convergen ...
Algoman orogeny
The Algoman orogeny, known as the Kenoran orogeny in Canada, was an episode of mountain-building (orogeny) during the Late Archean Eon that involved repeated episodes of continental collisions, compressions and subductions. The Superior province and the Minnesota River Valley terrane collided about 2,700 to 2,500 million years ago. The collision folded the Earth's crust and produced enough heat and pressure to metamorphose the rock. Blocks were added to the Superior province along a 1,200 km (750 mi) boundary that stretches from present-day eastern South Dakota into the Lake Huron area. The Algoman orogeny brought the Archaen Eon to a close, about 2,500 million years ago; it lasted less than 100 million years and marks a major change in the development of the earth’s crust.The Canadian shield contains belts of metavolcanic and metasedimentary rocks formed by the action of metamorphism on volcanic and sedimentary rock. The areas between individual belts consist of granites or granitic gneisses that form fault zones. These two types of belts can be seen in the Wabigoon, Quetico and Wawa subprovinces; the Wabigoon and Wawa are of volcanic origin and the Quetico is of sedimentary origin. These three subprovinces lie linearly in southwestern- to northeastern-oriented belts about 140 km (90 mi) wide on the southern portion of the Superior Province.The Slave province and portions of the Nain province were also affected. Between about 2,000 and 1,700 million years ago these combined with the Sask and Wyoming cratons to form the first supercontinent, the Kenorland supercontinent.