Deformation of Rock
... As we learned in our discussion of physical weathering, joints are fractures in rock that show no slippage or offset along the fracture. Joints are usually planar features, so their orientation can be described as a strike and dip. They form from as a result of extensional stress acting on brittle r ...
... As we learned in our discussion of physical weathering, joints are fractures in rock that show no slippage or offset along the fracture. Joints are usually planar features, so their orientation can be described as a strike and dip. They form from as a result of extensional stress acting on brittle r ...
File - Pi Beta Philes!
... 2) T or F: The asthenosphere is a relatively cool and rigid shell that overlies the lithosphere. 3) T or F: The doctrine of uniformitarianism implies that the current forces and processes shaping the Earth have been operating for a very long time. 5) T or F: The currently accepted age of Earth is ap ...
... 2) T or F: The asthenosphere is a relatively cool and rigid shell that overlies the lithosphere. 3) T or F: The doctrine of uniformitarianism implies that the current forces and processes shaping the Earth have been operating for a very long time. 5) T or F: The currently accepted age of Earth is ap ...
hazards and threats: earthquakes terms and definitions
... Transform faults are found where plates slide past one another. An example of a transform-fault plate boundary is the San Andreas Fault, along the coast of California and northwestern Mexico. Earthquakes at transform faults tend to occur at shallow depths and form fairly straight linear patterns. Su ...
... Transform faults are found where plates slide past one another. An example of a transform-fault plate boundary is the San Andreas Fault, along the coast of California and northwestern Mexico. Earthquakes at transform faults tend to occur at shallow depths and form fairly straight linear patterns. Su ...
earth`s components & characteristics
... Plate Tectonics • Tectonic plates- made of… – Uppermost mantle – Crust- 2 types: • Oceanic- thin (5-10 km), dense, rich in Fe, Mg, Si, below sea level • Continental- thick (20-70 km), less dense, rich in Ca, Na, K, Al ...
... Plate Tectonics • Tectonic plates- made of… – Uppermost mantle – Crust- 2 types: • Oceanic- thin (5-10 km), dense, rich in Fe, Mg, Si, below sea level • Continental- thick (20-70 km), less dense, rich in Ca, Na, K, Al ...
University of Dublin Trinity College
... 70° separated by an angular unconformity from younger, overlying strata that dip SE at about 30°, (c) strata folded into an asymmetrical anticline that plunges at 20° to the north, (d) strata dipping gently to the NNE cut by a reverse fault that trends north-south and dips steeply to the west. (5 ma ...
... 70° separated by an angular unconformity from younger, overlying strata that dip SE at about 30°, (c) strata folded into an asymmetrical anticline that plunges at 20° to the north, (d) strata dipping gently to the NNE cut by a reverse fault that trends north-south and dips steeply to the west. (5 ma ...
3-highland rocks-pristine-concept-
... Pristinity Concept • Pristine rocks: – Rocks produced by endogenous igneous processes – Not impact melts or breccias composed of more than one lithology (i.e., they are not polymict breccias) – But they can be crushed, granulated, sheared, and generally messed up – And they can be found in breccias ...
... Pristinity Concept • Pristine rocks: – Rocks produced by endogenous igneous processes – Not impact melts or breccias composed of more than one lithology (i.e., they are not polymict breccias) – But they can be crushed, granulated, sheared, and generally messed up – And they can be found in breccias ...
COMPOSITION OF PALAEOGENE VOLCANITES OF THE REGION
... The Upper Arda graben basin is located in the area of Arda Mountain in the Southern Rhodopes, both on the territory of Bulgaria and Greece. The volcanic and volcano-sedimentary rocks overlie and associate with Upper Eocene and Oligocene terrigenous sediments. Dacites, rhyiolites and tuffs are domina ...
... The Upper Arda graben basin is located in the area of Arda Mountain in the Southern Rhodopes, both on the territory of Bulgaria and Greece. The volcanic and volcano-sedimentary rocks overlie and associate with Upper Eocene and Oligocene terrigenous sediments. Dacites, rhyiolites and tuffs are domina ...
Plate Tectonics
... When there is a collision between continental and oceanic crust, the less dense continental crust cannot sink under the denser oceanic crust. Instead, the denser oceanic crust begins to sink and plunges underneath the continental plate, back into the asthenosphere where it is ...
... When there is a collision between continental and oceanic crust, the less dense continental crust cannot sink under the denser oceanic crust. Instead, the denser oceanic crust begins to sink and plunges underneath the continental plate, back into the asthenosphere where it is ...
Mapping Earthquakes and faults with USGS (United
... 5) Turn on plate boundaries. Zoom out to see the whole world view. Q5) Do most earthquakes fall within the tectonic plates, or on the boundaries of tectonic plates? Most earthquakes occur on plate boundaries. 6) Turn on US hazard map. Q6) Describe which areas have high seismic hazard. California, Al ...
... 5) Turn on plate boundaries. Zoom out to see the whole world view. Q5) Do most earthquakes fall within the tectonic plates, or on the boundaries of tectonic plates? Most earthquakes occur on plate boundaries. 6) Turn on US hazard map. Q6) Describe which areas have high seismic hazard. California, Al ...
PLATETECTONICS-Slip,SlidnAway
... • Giant plates drift around on the asthenosphere at a rate of 1 to 2 centimeters per year ...
... • Giant plates drift around on the asthenosphere at a rate of 1 to 2 centimeters per year ...
Primary structure
... rock, in which case they are sills. Endocontact features are formed within an intrusion, where it comes in contact with the host rock. A chill zone is typically finer-grained than the bulk of the intrusion. Xenoliths are pieces of host rock that broke off and are surrounded by the intrusion. 2. Volc ...
... rock, in which case they are sills. Endocontact features are formed within an intrusion, where it comes in contact with the host rock. A chill zone is typically finer-grained than the bulk of the intrusion. Xenoliths are pieces of host rock that broke off and are surrounded by the intrusion. 2. Volc ...
GEOLOGY OF NEVADA
... and the major basins and ranges that characterize the present-day topography were produced by extensional block faulting. Basalt or bimodal assemblages of basalt and rhyolite were erupted at this time, and continental sediments were entrapped in the fault-related basins. The basins and ranges of Nev ...
... and the major basins and ranges that characterize the present-day topography were produced by extensional block faulting. Basalt or bimodal assemblages of basalt and rhyolite were erupted at this time, and continental sediments were entrapped in the fault-related basins. The basins and ranges of Nev ...
Document
... • Giant plates drift around on the asthenosphere at a rate of 1 to 2 centimeters per year ...
... • Giant plates drift around on the asthenosphere at a rate of 1 to 2 centimeters per year ...
Chapter 8 Study Guide – Earthquakes 1. What is an earthquake
... calculate the distance to the epicenter of the earthquake. 10. Describe the make-up of the inner and outer core. Outer core: 2260 km thick, metallic iron flows through this layer, creating Earth’s magnetic field Inner core: 1220 km thick, solid iron-nickel alloy (solid due to extremely high pressure ...
... calculate the distance to the epicenter of the earthquake. 10. Describe the make-up of the inner and outer core. Outer core: 2260 km thick, metallic iron flows through this layer, creating Earth’s magnetic field Inner core: 1220 km thick, solid iron-nickel alloy (solid due to extremely high pressure ...
GEOL_2_mid_term_I
... (32) 1 pt. Linear, magnetic patterns associated with mid-ocean ridges are configured as ________. A) reversed magnetizations along the rift valleys and normal magnetizations along the ridge B) normal and reversed magnetized strips roughly parallel to the ridge C) normal and reversed magnetized strip ...
... (32) 1 pt. Linear, magnetic patterns associated with mid-ocean ridges are configured as ________. A) reversed magnetizations along the rift valleys and normal magnetizations along the ridge B) normal and reversed magnetized strips roughly parallel to the ridge C) normal and reversed magnetized strip ...
PowerPoint プレゼンテーション
... Plutons, stocks, and batholiths • The term pluton is used to denote a moderately large body of magma which is intruded essentially at one time and is contained within a single boundary. Plutons have various shapes but are commonly nearly circular in cross-section; an average area for many granitic p ...
... Plutons, stocks, and batholiths • The term pluton is used to denote a moderately large body of magma which is intruded essentially at one time and is contained within a single boundary. Plutons have various shapes but are commonly nearly circular in cross-section; an average area for many granitic p ...
Review 1 - Introduction and Minerals
... These questions are a selection pulled from the Tarbuck and Lutgens Earth text. As a result, they may not by in numerical order. To get credit, highlight/bold/italic/mark your answer and uploaded the saved file into theD2L dropbox. As long as you turn in your own copy and actively participate in doi ...
... These questions are a selection pulled from the Tarbuck and Lutgens Earth text. As a result, they may not by in numerical order. To get credit, highlight/bold/italic/mark your answer and uploaded the saved file into theD2L dropbox. As long as you turn in your own copy and actively participate in doi ...
A note on the gravitational field of the right rectangular prism
... regionally focusing on its information content regarding the crust-mantle boundary. The numerical assessment of the metric information given by the database in terms of thickness and position of individual crustal layers with respect to sea level takes place by investigating correlations with the su ...
... regionally focusing on its information content regarding the crust-mantle boundary. The numerical assessment of the metric information given by the database in terms of thickness and position of individual crustal layers with respect to sea level takes place by investigating correlations with the su ...
GEOLOGY
... This period was dominated by smaller fauna and mammals began to establish their hold on the land and ocean. However, some species of birds which were huge in size still existed during this time and they were feared by these smaller mammals. However, the mammals were considerable larger than the size ...
... This period was dominated by smaller fauna and mammals began to establish their hold on the land and ocean. However, some species of birds which were huge in size still existed during this time and they were feared by these smaller mammals. However, the mammals were considerable larger than the size ...
KEY - Belmont Secondary Home Page
... 4. Fractures in rock along which movement has occurred are known as __FAULTS__. 5. When geologist talk about the __STRIKE__ of a rock layer, they refer to a compass direction measured parallel to the earth's surface. 6. When geologist talk about the ___DIP___ of a rock layer, they mean the tilt or a ...
... 4. Fractures in rock along which movement has occurred are known as __FAULTS__. 5. When geologist talk about the __STRIKE__ of a rock layer, they refer to a compass direction measured parallel to the earth's surface. 6. When geologist talk about the ___DIP___ of a rock layer, they mean the tilt or a ...
Ch 21 Fossils and the Rock Record
... Rock Record altered hard parts: The parts that have been replaced by minerals or by recrystallization. This process is called permineralization Index fossils: Fossils that can be used by geologists to correlate rock layers over large geographic areas, or to date a particular rock layer. The four cri ...
... Rock Record altered hard parts: The parts that have been replaced by minerals or by recrystallization. This process is called permineralization Index fossils: Fossils that can be used by geologists to correlate rock layers over large geographic areas, or to date a particular rock layer. The four cri ...
Chapter 4 - TeacherWeb
... The molten rock contains tiny grains of magnetic materials which align themselves with Earth’s current magnetic field They are “set in stone” as the molten rock cools and solidifies As the sea-floor continues to spread, these rocks are carried away from the spreading center The magnetic fields are f ...
... The molten rock contains tiny grains of magnetic materials which align themselves with Earth’s current magnetic field They are “set in stone” as the molten rock cools and solidifies As the sea-floor continues to spread, these rocks are carried away from the spreading center The magnetic fields are f ...
Rock Identification Lab Information
... foliation. Foliated textures are further described on the basis of the grain (crystal) size in the rock. Examples of different sizes of foliation include: slate = very thin layers; gneiss = thick bands (> ¼ inch). Foliated textures can also be produced by shearing and breaking, such as in a fault zo ...
... foliation. Foliated textures are further described on the basis of the grain (crystal) size in the rock. Examples of different sizes of foliation include: slate = very thin layers; gneiss = thick bands (> ¼ inch). Foliated textures can also be produced by shearing and breaking, such as in a fault zo ...
Week 7 - Geophile.net
... Stratigraphic laws: original horizontality, overturned bedding Igneous rock masses: lava flows, volcanic deposits, dikes, sills, laccoliths, stocks and batholiths Crosscutting relationships Metamorphic rock masses: relict bedding, contact aureoles, metamorphic zones, index minerals, isograds Strike ...
... Stratigraphic laws: original horizontality, overturned bedding Igneous rock masses: lava flows, volcanic deposits, dikes, sills, laccoliths, stocks and batholiths Crosscutting relationships Metamorphic rock masses: relict bedding, contact aureoles, metamorphic zones, index minerals, isograds Strike ...
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.