Origin of magma (pg.270-273)
... 1. Define/describe geothermal gradient and how it applies to rock melting. 2. How does reducing confining pressure change rock’s melting temperature? 3. Decompression melting of rock occurs when rocks (ascend, descend)? Explain. 4. What effect do volatiles (such as water) have on the melting tempera ...
... 1. Define/describe geothermal gradient and how it applies to rock melting. 2. How does reducing confining pressure change rock’s melting temperature? 3. Decompression melting of rock occurs when rocks (ascend, descend)? Explain. 4. What effect do volatiles (such as water) have on the melting tempera ...
Chapter 5
... changes in the earth’s crust occur because of changes in weight of some part of the crust. When parts of the crust become thicker and heavier, they will sink. If they become lighter and thinner, it will rise. ...
... changes in the earth’s crust occur because of changes in weight of some part of the crust. When parts of the crust become thicker and heavier, they will sink. If they become lighter and thinner, it will rise. ...
TEST 1 FALL 2006
... 40. As the word is understood in sciences, many “theories” in geology will never become laws because__________. a. geologists cannot agree b. geologic time cannot be duplicated in the lab or field c. it is impossible to observe Earth processes d. all of these 41. Subduction zones are associated wit ...
... 40. As the word is understood in sciences, many “theories” in geology will never become laws because__________. a. geologists cannot agree b. geologic time cannot be duplicated in the lab or field c. it is impossible to observe Earth processes d. all of these 41. Subduction zones are associated wit ...
4.1 Earth`s Formation
... OBJECTIVES Explain how most scientists explain the formation of our solar system. Describe Earth’s size and shape and the arrangement of its layers. List three sources of Earth’s internal heat. Describe Earth’s magnetic field. ...
... OBJECTIVES Explain how most scientists explain the formation of our solar system. Describe Earth’s size and shape and the arrangement of its layers. List three sources of Earth’s internal heat. Describe Earth’s magnetic field. ...
Sea-Floor Spreading - Catawba County Schools
... underwater objects and then records the echoes of these sound waves. Sonar mapped midocean ridges. ...
... underwater objects and then records the echoes of these sound waves. Sonar mapped midocean ridges. ...
Introduction to Atmospheric Science, PHSC 3223
... based on their origins or means of formation – Igneous rocks originate from cooling and crystallization of magma from inside the Earth: Extrusive or volcanic igneous rocks form when magma is forced to the surface; Intrusive or plutonic igneous rocks are formed when magma cools inside the earth. – Se ...
... based on their origins or means of formation – Igneous rocks originate from cooling and crystallization of magma from inside the Earth: Extrusive or volcanic igneous rocks form when magma is forced to the surface; Intrusive or plutonic igneous rocks are formed when magma cools inside the earth. – Se ...
geologic time scale
... which, erosion removed previously formed rocks, and then deposition resumed. An unconformity is represented by a wavy line in a sequence of rocks. Three types of unconformities – angular, nonconformity, and disconformity ...
... which, erosion removed previously formed rocks, and then deposition resumed. An unconformity is represented by a wavy line in a sequence of rocks. Three types of unconformities – angular, nonconformity, and disconformity ...
Ch 19 Continental Alk mod 8
... Figure 19-3. 143Nd/144Nd vs. 87Sr/86Sr for East African Rift lavas (solid outline) and xenoliths (dashed). The “cross-hair” intersects at Bulk Earth (after Kampunzu and Mohr, 1991), Magmatic evolution and petrogenesis in the East African Rift system. In A. B. Kampunzu and R. T. Lubala (eds.), Magmat ...
... Figure 19-3. 143Nd/144Nd vs. 87Sr/86Sr for East African Rift lavas (solid outline) and xenoliths (dashed). The “cross-hair” intersects at Bulk Earth (after Kampunzu and Mohr, 1991), Magmatic evolution and petrogenesis in the East African Rift system. In A. B. Kampunzu and R. T. Lubala (eds.), Magmat ...
Downloadable self-guided walking route for Bloody
... Granite The contact between dark hornfels and light granite is easily spotted in the river bed. This is the edge of a series of granite intrusions which extend for 15 km to the west. The granite closest to the contact cooled quickly to form small crystals. This is because the siltstone/hornfels woul ...
... Granite The contact between dark hornfels and light granite is easily spotted in the river bed. This is the edge of a series of granite intrusions which extend for 15 km to the west. The granite closest to the contact cooled quickly to form small crystals. This is because the siltstone/hornfels woul ...
Plate Tectonics and Associated Hazards
... • Made up of rocks rich in iron and nickel • Core temperature over 6000oC • Outer core is semi-molten/liquid (only part of the planet which is!) • Inner core is solid The Mantle • Separated from the core by the Gutenburg discontinuity • Largely composed of silicate rocks rich in iron and magnesium • ...
... • Made up of rocks rich in iron and nickel • Core temperature over 6000oC • Outer core is semi-molten/liquid (only part of the planet which is!) • Inner core is solid The Mantle • Separated from the core by the Gutenburg discontinuity • Largely composed of silicate rocks rich in iron and magnesium • ...
Semester 1 Study Guide Key
... On Mohs’ scale of hardness, what are the softest and hardest minerals? Can quartz be scratched by a penny or calcite? What is the movement of the plates caused by? ...
... On Mohs’ scale of hardness, what are the softest and hardest minerals? Can quartz be scratched by a penny or calcite? What is the movement of the plates caused by? ...
Dangerous Earth: a plate tectonic story
... If you could sit in space and study the Earth you might see some strange patterns through the swirls of cloud. Many of the mountains are found in long chains; islands are found in long, curved chains; the coastline of South America fits the coast of Africa almost exactly. If you could probe beneath ...
... If you could sit in space and study the Earth you might see some strange patterns through the swirls of cloud. Many of the mountains are found in long chains; islands are found in long, curved chains; the coastline of South America fits the coast of Africa almost exactly. If you could probe beneath ...
Dangerous Earth: a plate tectonic story
... If you could sit in space and study the Earth you might see some strange patterns through the swirls of cloud. Many of the mountains are found in long chains; islands are found in long, curved chains; the coastline of South America fits the coast of Africa almost exactly. If you could probe beneath ...
... If you could sit in space and study the Earth you might see some strange patterns through the swirls of cloud. Many of the mountains are found in long chains; islands are found in long, curved chains; the coastline of South America fits the coast of Africa almost exactly. If you could probe beneath ...
3A8 Week 01 Lecture 03-Rocks and minerals 02
... Metamorphic Rocks • The original rock is termed a protolith • The composition of the protolith and the conditions of metamorphism and deformation will largely determine the end structure and composition of the metamorphic rock ...
... Metamorphic Rocks • The original rock is termed a protolith • The composition of the protolith and the conditions of metamorphism and deformation will largely determine the end structure and composition of the metamorphic rock ...
How old is our Earth
... eruption C) Stratovolcanoes D) Shield Volcanoes 22. The first formed liquid during partial melting is likely to be more *A) felsic, B) mafic, C) of the same composition as the rock D) can be any of these 23. Pluton in the picture is …. A) Sill *B) Dike C) Stock D) Batholith? ...
... eruption C) Stratovolcanoes D) Shield Volcanoes 22. The first formed liquid during partial melting is likely to be more *A) felsic, B) mafic, C) of the same composition as the rock D) can be any of these 23. Pluton in the picture is …. A) Sill *B) Dike C) Stock D) Batholith? ...
Study Guide: Rock Cycle, Weathering, Erosion, Soils
... 4. Which igneous rock cooled faster—granite or obsidian? How can you tell by looking at them? ...
... 4. Which igneous rock cooled faster—granite or obsidian? How can you tell by looking at them? ...
First Hour Exam, Fall, 2001
... 18. The minerals in Bowen's Reaction Series are all susceptible to chemical weathering. What can you say about their relative resistance to chemical weathering? a. The minerals in Bowen's Reaction Series all have about the same resistance to weathering. b. Those at the bottom of the Series are the l ...
... 18. The minerals in Bowen's Reaction Series are all susceptible to chemical weathering. What can you say about their relative resistance to chemical weathering? a. The minerals in Bowen's Reaction Series all have about the same resistance to weathering. b. Those at the bottom of the Series are the l ...
Timeline of the development of the theory of plate tectonics
... Flemish mapmaker Abraham Ortelius noted that the coastlines of the continents appear to fit together. He suggested that the continents were once joined and that the Americas were "torn away" from Europe and Africa. 1638 Danish Anatomist and Geologist, Nicolaus Steno - proposed the Law of Superpositi ...
... Flemish mapmaker Abraham Ortelius noted that the coastlines of the continents appear to fit together. He suggested that the continents were once joined and that the Americas were "torn away" from Europe and Africa. 1638 Danish Anatomist and Geologist, Nicolaus Steno - proposed the Law of Superpositi ...
Name: Number of Questions
... b. core c. crust d. mantle Section 16-2 Internal and External Earth Processes ____ 4. The majority of earthquakes and volcanoes occur a. in the interior of continents. b. on oceanic islands. c. along the edge of continents. d. in the open ocean. ____ 5. A _____ is not one of the three types of bound ...
... b. core c. crust d. mantle Section 16-2 Internal and External Earth Processes ____ 4. The majority of earthquakes and volcanoes occur a. in the interior of continents. b. on oceanic islands. c. along the edge of continents. d. in the open ocean. ____ 5. A _____ is not one of the three types of bound ...
Earth*s Structure
... •Wegener’s Hypothesis: continental driftsingle land mass broke up many times over the years and moved to where they are now ...
... •Wegener’s Hypothesis: continental driftsingle land mass broke up many times over the years and moved to where they are now ...
Science Background Information
... whose magnetism could not previously be measured. When compared to the current direction of the Earth’s magnetic field, changes in the alignment of the magnetic particles in different layers of rocks showed that the particles were in different positions at some time in the past. Since the rock layer ...
... whose magnetism could not previously be measured. When compared to the current direction of the Earth’s magnetic field, changes in the alignment of the magnetic particles in different layers of rocks showed that the particles were in different positions at some time in the past. Since the rock layer ...