Monitoring Earthquakes - Hicksville Public Schools / Homepage
... active faults, monitor changes along faults and develop a method of predicting earthquakes. Mapping Faults: faults can be hidden by a thick layer of rock or soil. Seismic data helps to map fault length and depth so that the earthquake risk for an area can be determined. Monitoring Changes Along Faul ...
... active faults, monitor changes along faults and develop a method of predicting earthquakes. Mapping Faults: faults can be hidden by a thick layer of rock or soil. Seismic data helps to map fault length and depth so that the earthquake risk for an area can be determined. Monitoring Changes Along Faul ...
7044
... occurred sometime ca. 2 Ga; this event resulted in substantial enrichment in Rb, K, LREE/HREE, Th/U, Th/Pb and, to a lesser extent, Nb and Ti. The fluids responsible for this metasomatism were probably alkalic volatile-rich melts generated from enriched lithospheric mantle above an incubating plume ...
... occurred sometime ca. 2 Ga; this event resulted in substantial enrichment in Rb, K, LREE/HREE, Th/U, Th/Pb and, to a lesser extent, Nb and Ti. The fluids responsible for this metasomatism were probably alkalic volatile-rich melts generated from enriched lithospheric mantle above an incubating plume ...
Origins of Magma
... The basalt generated in the subduction zone may also melt continental crust. Recall that the melting temperature of the higher silica igneous rocks is lower than basalt. This means that thermal energy from the basalt will melt the continental crust which is primarily dioritic in composition. This me ...
... The basalt generated in the subduction zone may also melt continental crust. Recall that the melting temperature of the higher silica igneous rocks is lower than basalt. This means that thermal energy from the basalt will melt the continental crust which is primarily dioritic in composition. This me ...
Intrusive and Extrusive Igneous Rocks
... chance to grow. Intrusive igneous rocks have relatively large crystals that are easy to see. Intrusive igneous rocks are also called plutonic. A pluton is an igneous rock body that forms within the crust. Granite is the most common intrusive igneous rock. Pictured below are four types of intrusive r ...
... chance to grow. Intrusive igneous rocks have relatively large crystals that are easy to see. Intrusive igneous rocks are also called plutonic. A pluton is an igneous rock body that forms within the crust. Granite is the most common intrusive igneous rock. Pictured below are four types of intrusive r ...
What are earthquakes?
... • Place breakable or heavy objects on lower shelves. Bolt down appliances. These are two ways to keep heavy objects from falling. • Locate safe spots at home and school—such as under a sturdy table. • If outside in a quake, move to an open space away from buildings or power lines. This way you can s ...
... • Place breakable or heavy objects on lower shelves. Bolt down appliances. These are two ways to keep heavy objects from falling. • Locate safe spots at home and school—such as under a sturdy table. • If outside in a quake, move to an open space away from buildings or power lines. This way you can s ...
Course: Geology 12 Big Ideas: Elaborations: Earth Materials
... events in a given sequence of rock strata. These relative dating principles may include the following o Law of superposition o Law of cross-cutting relationships o Law of Inclusions o Law of unconformities explore different tectonic settings in various parts of the world and classify different plate ...
... events in a given sequence of rock strata. These relative dating principles may include the following o Law of superposition o Law of cross-cutting relationships o Law of Inclusions o Law of unconformities explore different tectonic settings in various parts of the world and classify different plate ...
Geol 101: Physical Geology PAST EXAM QUESTIONS LECTURE
... 12. The correct order of soil horizons from the top down is: A. O E A C B B. O A E B C C. O C B A E D. A O E C B E. A B C D E 12. Which of the soil horizons make up humus? A. the O horizon B. the E horizon C. the A horizon D. the O and A horizons E. the A and E horizons 12. Which of the soil horizon ...
... 12. The correct order of soil horizons from the top down is: A. O E A C B B. O A E B C C. O C B A E D. A O E C B E. A B C D E 12. Which of the soil horizons make up humus? A. the O horizon B. the E horizon C. the A horizon D. the O and A horizons E. the A and E horizons 12. Which of the soil horizon ...
First Hour Exam Answers
... d. faults on the sea floor that extend down into the mantle, providing open gaps where magma rises to the surface. 10. Almost all new oceanic crust is being created by a. spreading along the mid-oceanic rise and ridge system (MORRS). b. lines of mantle plumes or "hot spots." c. subduction of oceanic ...
... d. faults on the sea floor that extend down into the mantle, providing open gaps where magma rises to the surface. 10. Almost all new oceanic crust is being created by a. spreading along the mid-oceanic rise and ridge system (MORRS). b. lines of mantle plumes or "hot spots." c. subduction of oceanic ...
Word
... D. oxidation reactions are produced that turn the rocks into red soil E. all rocks contain feldspar, which breaks down into clay 12. Hydrolysis reactions are when H+ cations in water replace mineral cations like K+, Na+ and Mg2+ in the mineral crystal lattice, forming a new mineral. This is how feld ...
... D. oxidation reactions are produced that turn the rocks into red soil E. all rocks contain feldspar, which breaks down into clay 12. Hydrolysis reactions are when H+ cations in water replace mineral cations like K+, Na+ and Mg2+ in the mineral crystal lattice, forming a new mineral. This is how feld ...
Volcanoes - TeacherWeb
... •What do we call a volcano the are not active now, but may become active in the future? ...
... •What do we call a volcano the are not active now, but may become active in the future? ...
Tut-4-exam-Q
... (i) how crustal shortening is achieved in the Himalayas. Block 4 sections 7.5 and 7.6. (ii) how this varies along the Himalayan chain. Major structures (STDS, MCT, MBT, MFT) can be traced for 2000 km along the centeal Himalaya (Fig. 7.5, 7.19. Convergence is often oblique (Figs. 7.45, 7.46). Western ...
... (i) how crustal shortening is achieved in the Himalayas. Block 4 sections 7.5 and 7.6. (ii) how this varies along the Himalayan chain. Major structures (STDS, MCT, MBT, MFT) can be traced for 2000 km along the centeal Himalaya (Fig. 7.5, 7.19. Convergence is often oblique (Figs. 7.45, 7.46). Western ...
unconformity - Shaileshchaure
... An unconformity is a contact between two rock units in which the upper unit is usually much younger than the lower unit. Unconformities are typically buried erosional surfaces that can represent a break in the geologic record of hundreds of mi llions of years or more. For example, the contact betwee ...
... An unconformity is a contact between two rock units in which the upper unit is usually much younger than the lower unit. Unconformities are typically buried erosional surfaces that can represent a break in the geologic record of hundreds of mi llions of years or more. For example, the contact betwee ...
CHAPTER 13 Denudation, weathering and mass wasting
... Rocks forming the Lake District terrane represent active subduction in a temperate climate setting, with crustal compression and shortening driving tectonic structures. Early subduction proceeded with the accumulation of trench turbidites before a short, sharp volcanic phase in the maturing fore-ar ...
... Rocks forming the Lake District terrane represent active subduction in a temperate climate setting, with crustal compression and shortening driving tectonic structures. Early subduction proceeded with the accumulation of trench turbidites before a short, sharp volcanic phase in the maturing fore-ar ...
Ch6_Sedimentation
... – Made of sand-sized particles – Forms in a variety of environments – Sorting and composition of grains can be used to interpret the rock’s history – Quartz is the predominant mineral (due to its durable nature) ...
... – Made of sand-sized particles – Forms in a variety of environments – Sorting and composition of grains can be used to interpret the rock’s history – Quartz is the predominant mineral (due to its durable nature) ...
Powerpoint Presentation Physical Geology, 10/e
... • Isostatic adjustment - rising or sinking of crustal blocks to achieve isostatic balance – Crust will rise when large mass is rapidly removed from the surface, as at end of ice ages – Rise of crust after ice sheet removal is called crustal rebound • Rebound still occurring in northern Canada and ...
... • Isostatic adjustment - rising or sinking of crustal blocks to achieve isostatic balance – Crust will rise when large mass is rapidly removed from the surface, as at end of ice ages – Rise of crust after ice sheet removal is called crustal rebound • Rebound still occurring in northern Canada and ...
Practice Q`s Earth History What is the estimated age of the earth
... How can the age of a fossil be determined? The most reliable method of dating absolute age of rocks is: a. superposition b. rates of sedimentation c. salinity in the ocean d. radioactivity How are fossils formed? Why are fossils so rare? What is the difference between absolute and sequential time? W ...
... How can the age of a fossil be determined? The most reliable method of dating absolute age of rocks is: a. superposition b. rates of sedimentation c. salinity in the ocean d. radioactivity How are fossils formed? Why are fossils so rare? What is the difference between absolute and sequential time? W ...
Crust
... began to break down the “super continent”, which eventually led to the creation of 6 large masses of land other wise known as continents. These continents are part of the continental crust. The six continents are Eurasia, Africa, North America, South America, Antarctica, and Australia. Scientist has ...
... began to break down the “super continent”, which eventually led to the creation of 6 large masses of land other wise known as continents. These continents are part of the continental crust. The six continents are Eurasia, Africa, North America, South America, Antarctica, and Australia. Scientist has ...
mining technology for the upgrade and geological investigations
... the manual removal of the soil surface layers to open the structure. This method is very slow and expensive and needs preliminary planning and a lot of funds. The Thracian hill near Starossel (Fig.1) village has been attacked earlier by the criminals and needed fast opening and upgrade, keeping the ...
... the manual removal of the soil surface layers to open the structure. This method is very slow and expensive and needs preliminary planning and a lot of funds. The Thracian hill near Starossel (Fig.1) village has been attacked earlier by the criminals and needed fast opening and upgrade, keeping the ...
Specific Gravity
... this limits the maximum weight of rocks that can be weighed (most are ~500 g). 2. Paper for data tables. 3. A collection of different rock types and sizes. A good size range is from golf ball size to half the size of a fist. 4. A beaker or jar of water big enough to hold the largest rock easily. 5. ...
... this limits the maximum weight of rocks that can be weighed (most are ~500 g). 2. Paper for data tables. 3. A collection of different rock types and sizes. A good size range is from golf ball size to half the size of a fist. 4. A beaker or jar of water big enough to hold the largest rock easily. 5. ...
ppt - MARGINS
... Conclusion Based on our results, it is difficult to evaluate whether heavy noble gases in subducting materials are completely degassed beneath the back arc region. However, we show that subducting atmospheric argon is effectively introduced into the mantle wedge associated with the subducting slab - ...
... Conclusion Based on our results, it is difficult to evaluate whether heavy noble gases in subducting materials are completely degassed beneath the back arc region. However, we show that subducting atmospheric argon is effectively introduced into the mantle wedge associated with the subducting slab - ...
DATING ROCK LAYERS RELATIVE DATING
... In a reverse fault, the block above the fault moves up relative to the block below the fault. This fault motion is caused by compressional forces and results in shortening. A reverse fault is called a thrust fault if the dip of the fault plane is small. [Other names: thrust fault, reverse-slip fault ...
... In a reverse fault, the block above the fault moves up relative to the block below the fault. This fault motion is caused by compressional forces and results in shortening. A reverse fault is called a thrust fault if the dip of the fault plane is small. [Other names: thrust fault, reverse-slip fault ...
C1 Topic 2 Can Do Sheet
... a) formed by the solidification of magma and lava b) made of crystals whose size depends on the rate of cooling ...
... a) formed by the solidification of magma and lava b) made of crystals whose size depends on the rate of cooling ...
Open-File Report O-06-11, Preliminary Geologic Map of the Sexton
... crystalline. At least some contacts are depositional as seen a few kilometers to the north of the study area at the Gold Hill quarry. There large blocks and boulders of marble form clasts in adjacent (overlying?) quartzite and phyllite beds to the east. Outcrops of marble can only rarely be followed ...
... crystalline. At least some contacts are depositional as seen a few kilometers to the north of the study area at the Gold Hill quarry. There large blocks and boulders of marble form clasts in adjacent (overlying?) quartzite and phyllite beds to the east. Outcrops of marble can only rarely be followed ...
Cause of Earthquakes
... sudden release of stored elastic energy. Most often located on a preexisting fault. ...
... sudden release of stored elastic energy. Most often located on a preexisting fault. ...
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.