Name Student ID Exam 2b – GEOL 1113 Fall 2009 ____
... _____ 32. A Benioff earthquake zone is significant in plate tectonic theory because it a. locates rift valleys on continents b. coincides with mid-oceanic ridges c. traces the descent of a sea-floor slab subducting into an oceanic trench or under a continent d. may predict quake locations under tran ...
... _____ 32. A Benioff earthquake zone is significant in plate tectonic theory because it a. locates rift valleys on continents b. coincides with mid-oceanic ridges c. traces the descent of a sea-floor slab subducting into an oceanic trench or under a continent d. may predict quake locations under tran ...
Beyond_the_Beach
... continental and oceanic plates move in same direction at same speed examples – margins around Atlantic Ocean contain: coastal plain (was continental shelf during higher sea level) broad continental shelf continental slope and rise Collision margins continental and oceanic plates move toward each oth ...
... continental and oceanic plates move in same direction at same speed examples – margins around Atlantic Ocean contain: coastal plain (was continental shelf during higher sea level) broad continental shelf continental slope and rise Collision margins continental and oceanic plates move toward each oth ...
Name Student ID Exam 2c – GEOL 1113 Fall 2009 ____
... _____ 34. A Benioff earthquake zone is significant in plate tectonic theory because it a. locates rift valleys on continents b. coincides with mid-oceanic ridges c. traces the descent of a sea-floor slab subducting into an oceanic trench or under a continent d. may predict quake locations under tran ...
... _____ 34. A Benioff earthquake zone is significant in plate tectonic theory because it a. locates rift valleys on continents b. coincides with mid-oceanic ridges c. traces the descent of a sea-floor slab subducting into an oceanic trench or under a continent d. may predict quake locations under tran ...
Exploring Inside Earth
... occur, they produce seismic waves (syz mik). Geologists record the seismic waves and study how they travel through Earth. The speed of seismic waves and the paths they take reveal the structure of the planet. Using data from seismic waves, geologists have learned that Earth’s interior is made up of ...
... occur, they produce seismic waves (syz mik). Geologists record the seismic waves and study how they travel through Earth. The speed of seismic waves and the paths they take reveal the structure of the planet. Using data from seismic waves, geologists have learned that Earth’s interior is made up of ...
Earth as a Planet
... known for nearly 100 years (see The Composition of the Earth: Rocks and Minerals). In 1906, the British geologist Richard Oldham found that at a certain depth P waves slowed dramatically and S waves stopped completely. This is the boundary to the Earth’s liquid core and occurs at a depth of 2980 km. ...
... known for nearly 100 years (see The Composition of the Earth: Rocks and Minerals). In 1906, the British geologist Richard Oldham found that at a certain depth P waves slowed dramatically and S waves stopped completely. This is the boundary to the Earth’s liquid core and occurs at a depth of 2980 km. ...
Lithospheric plates - The Old Courthouse Museum Batemans Bay
... the Earth, the lithospheric rocks (plates), “float” on top of the hotter, more plastic, deep mantle rocks and move slowly, driven by convection currents within the Earth. These processes are commonly referred to as “plate tectonics”. ...
... the Earth, the lithospheric rocks (plates), “float” on top of the hotter, more plastic, deep mantle rocks and move slowly, driven by convection currents within the Earth. These processes are commonly referred to as “plate tectonics”. ...
1. Glass is chemically related to what mineral? Fluorite Quartz Pyrite
... 8. In karst regions, caves are carved by the flow of water through limestone bedrock. How do the stalagmites and stalactites in the caves develop? They are carbonate deposits formed by dripping water in air-filled cavities. They are granite intrusions that remain behind after water dissolves the su ...
... 8. In karst regions, caves are carved by the flow of water through limestone bedrock. How do the stalagmites and stalactites in the caves develop? They are carbonate deposits formed by dripping water in air-filled cavities. They are granite intrusions that remain behind after water dissolves the su ...
Earthquakes
... • Stress: a force that acts on rock to change its shape or volume. – Because stress is a force, it adds energy to the rock. The energy is stored in the rock until the rock changes shape or breaks. – Most changes in the crust occur so slowly that they cannot be observed directly. But if you could spe ...
... • Stress: a force that acts on rock to change its shape or volume. – Because stress is a force, it adds energy to the rock. The energy is stored in the rock until the rock changes shape or breaks. – Most changes in the crust occur so slowly that they cannot be observed directly. But if you could spe ...
(B) Comparison of different layers of rock
... Rocks found in the ocean are about the same age as rocks found on continents. Rocks found on continents are generally older than rocks found in the ocean. Rock ages are determined by analyzing the carbon in the rock. Rocks found in the ocean are generally older than rocks found on continents. E. Non ...
... Rocks found in the ocean are about the same age as rocks found on continents. Rocks found on continents are generally older than rocks found in the ocean. Rock ages are determined by analyzing the carbon in the rock. Rocks found in the ocean are generally older than rocks found on continents. E. Non ...
Issue 1.indd
... towering over 8000 metres above sea level. Great glaciers have carved deep valleys into the belt, creating some of the most dramatic topography on earth. The mountain belt is made of a complex mix of rocks. Ocean sediments, intrusive volcanics, and compressed and heated fragments of oceanic crust al ...
... towering over 8000 metres above sea level. Great glaciers have carved deep valleys into the belt, creating some of the most dramatic topography on earth. The mountain belt is made of a complex mix of rocks. Ocean sediments, intrusive volcanics, and compressed and heated fragments of oceanic crust al ...
Fractured Earth - Do plumes exist?
... One of the most hotly debated theories just now is whether or not breakup was driven by mantle plumes. The concept of mantle plumes is well established in the scientific literature, but has, over recent years been challenged. Mantle plumes (according to this argument) originate at the core/mantle bo ...
... One of the most hotly debated theories just now is whether or not breakup was driven by mantle plumes. The concept of mantle plumes is well established in the scientific literature, but has, over recent years been challenged. Mantle plumes (according to this argument) originate at the core/mantle bo ...
Hot Spot Volcanism on Venus, Earth and Mars
... to keep surface volcanism active for over a b.y. Since Mars is relatively small, more geologic activity occurred in the 1st b.y. However, there is evidence for recent volcanism within the last 1 m.y. or possibly even more recent. Possible heat sources include sequestering of heat producing elements ...
... to keep surface volcanism active for over a b.y. Since Mars is relatively small, more geologic activity occurred in the 1st b.y. However, there is evidence for recent volcanism within the last 1 m.y. or possibly even more recent. Possible heat sources include sequestering of heat producing elements ...
IM_chapter10 Mountain Building
... 1. A large sample of “silly putty” can be used to illustrate how a given material can respond differently to different stresses, or stresses applied at different rates. If a ball of the material is dropped from a short distance onto a table top, it will bounce, and although a small amount of the str ...
... 1. A large sample of “silly putty” can be used to illustrate how a given material can respond differently to different stresses, or stresses applied at different rates. If a ball of the material is dropped from a short distance onto a table top, it will bounce, and although a small amount of the str ...
Sea-Floor Spreading - Madison County Schools
... • Using a submarine named Alvin, scientists were able to look into a rift valley and examine something called pillow lava, which is a special type of solid rock that only forms on the ocean floor when magma cools very rapidly. This proved that new molten material was being added to the ocean floor a ...
... • Using a submarine named Alvin, scientists were able to look into a rift valley and examine something called pillow lava, which is a special type of solid rock that only forms on the ocean floor when magma cools very rapidly. This proved that new molten material was being added to the ocean floor a ...
File
... ACTIVE MARGINS are continental margins that are associated with plate boundaries, and they are marked by a high degree of tectonic activity. Active margins are further divided into two types, transform active margins and convergent active margins. Transform active margins - side-to-side fault. San A ...
... ACTIVE MARGINS are continental margins that are associated with plate boundaries, and they are marked by a high degree of tectonic activity. Active margins are further divided into two types, transform active margins and convergent active margins. Transform active margins - side-to-side fault. San A ...
They believe that 200 million years ago, some force made Pangaea
... push against one another, forcing one plate under the other. Tremendous pressure and heat builds up causing molten rock to explode on the surface. ...
... push against one another, forcing one plate under the other. Tremendous pressure and heat builds up causing molten rock to explode on the surface. ...
The Restless Earth - Heathcote School & Science College
... The central part of the Earth, consisting of a solid inner core and a more fluid outer core, and mostly composed of iron and nickel. ...
... The central part of the Earth, consisting of a solid inner core and a more fluid outer core, and mostly composed of iron and nickel. ...
Understanding continental subduction: A work in
... new constraints to our rapidly evolving ideas and models regarding the process of continental subduction. Classic plate tectonics concepts suggested that continents do not subduct. Instead, when two continents collide at a convergent boundary following the consumption of an ocean by subduction, they ...
... new constraints to our rapidly evolving ideas and models regarding the process of continental subduction. Classic plate tectonics concepts suggested that continents do not subduct. Instead, when two continents collide at a convergent boundary following the consumption of an ocean by subduction, they ...
3. Plate Tectonics I (p. 37-46)
... It was hypothesized that all the continents had once been joined together as one large supercontinent called _________________. At some point in time, this supercontinent broke apart, and the continents drifted off to their present locations. Initially, these ideas were highly criticized by geologis ...
... It was hypothesized that all the continents had once been joined together as one large supercontinent called _________________. At some point in time, this supercontinent broke apart, and the continents drifted off to their present locations. Initially, these ideas were highly criticized by geologis ...
Plate tectonics
Plate tectonics (from the Late Latin tectonicus, from the Greek: τεκτονικός ""pertaining to building"") is a scientific theory that describes the large-scale motion of Earth's lithosphere. This theoretical model builds on the concept of continental drift which was developed during the first few decades of the 20th century. The geoscientific community accepted the theory after the concepts of seafloor spreading were later developed in the late 1950s and early 1960s.The lithosphere, which is the rigid outermost shell of a planet (on Earth, the crust and upper mantle), is broken up into tectonic plates. On Earth, there are seven or eight major plates (depending on how they are defined) and many minor plates. Where plates meet, their relative motion determines the type of boundary; convergent, divergent, or transform. Earthquakes, volcanic activity, mountain-building, and oceanic trench formation occur along these plate boundaries. The lateral relative movement of the plates typically varies from zero to 100 mm annually.Tectonic plates are composed of oceanic lithosphere and thicker continental lithosphere, each topped by its own kind of crust. Along convergent boundaries, subduction carries plates into the mantle; the material lost is roughly balanced by the formation of new (oceanic) crust along divergent margins by seafloor spreading. In this way, the total surface of the globe remains the same. This prediction of plate tectonics is also referred to as the conveyor belt principle. Earlier theories (that still have some supporters) propose gradual shrinking (contraction) or gradual expansion of the globe.Tectonic plates are able to move because the Earth's lithosphere has greater strength than the underlying asthenosphere. Lateral density variations in the mantle result in convection. Plate movement is thought to be driven by a combination of the motion of the seafloor away from the spreading ridge (due to variations in topography and density of the crust, which result in differences in gravitational forces) and drag, with downward suction, at the subduction zones. Another explanation lies in the different forces generated by the rotation of the globe and the tidal forces of the Sun and Moon. The relative importance of each of these factors and their relationship to each other is unclear, and still the subject of much debate.