SEA-FLOOR SPREADING By the early 1960s it was clear that
... By the early 1960s it was clear that continental drift occurred - the question was how? The answers came from work being done in the 1950s and 1960s from on the geolog of the sea floor. During this time, precision depths, using echo-sounding to measure the travel time to the bottom of the ocean, all ...
... By the early 1960s it was clear that continental drift occurred - the question was how? The answers came from work being done in the 1950s and 1960s from on the geolog of the sea floor. During this time, precision depths, using echo-sounding to measure the travel time to the bottom of the ocean, all ...
1 Midterm Exam I September 26, 2:10 HW714
... surface layer – rocks on crust side are chemically different than rocks on mantle side – separation between crust and mantle is called Mohorovičić discontinuity (the Moho) ...
... surface layer – rocks on crust side are chemically different than rocks on mantle side – separation between crust and mantle is called Mohorovičić discontinuity (the Moho) ...
1 Section 4.4 - Sea- Floor Spreading Directions
... A region of the Pacific Ocean floor off the coast of Mexico and South America 3) What happens to the ocean water at the East Pacific Rise? Ocean water sinks through cracks, or vents, in the crust. The water is heated by contact with hot material from the mantle and then spurts back into the ocean ...
... A region of the Pacific Ocean floor off the coast of Mexico and South America 3) What happens to the ocean water at the East Pacific Rise? Ocean water sinks through cracks, or vents, in the crust. The water is heated by contact with hot material from the mantle and then spurts back into the ocean ...
Plate Tectonics * Lab
... The divergent boundary represents two plates moving away or separating from each other, hence the term divergent. At this type of boundary, new oceanic crust is formed in the gap between two diverging plates as magma rises and fills the gap. The divergent boundary is characterized by high-rising rid ...
... The divergent boundary represents two plates moving away or separating from each other, hence the term divergent. At this type of boundary, new oceanic crust is formed in the gap between two diverging plates as magma rises and fills the gap. The divergent boundary is characterized by high-rising rid ...
Plate Tectonics – Lab
... The divergent boundary represents two plates moving away or separating from each other, hence the term divergent. At this type of boundary, new oceanic crust is formed in the gap between two diverging plates as magma rises and fills the gap. The divergent boundary is characterized by high-rising rid ...
... The divergent boundary represents two plates moving away or separating from each other, hence the term divergent. At this type of boundary, new oceanic crust is formed in the gap between two diverging plates as magma rises and fills the gap. The divergent boundary is characterized by high-rising rid ...
Last Time Polymorphs of SiO2 - University of South Alabama
... the formation of “shadow zones” where P or S-waves do not occur. ...
... the formation of “shadow zones” where P or S-waves do not occur. ...
es1 and accel plate boundaries lab
... 3. Color the entire North American Plate red. The list here the names of plates that border it: 4. Color the Pacific Plate blue. The plates are in motion and interact with one another. There are three types of plate boundaries: divergent, convergent and transform. ______________________________ are ...
... 3. Color the entire North American Plate red. The list here the names of plates that border it: 4. Color the Pacific Plate blue. The plates are in motion and interact with one another. There are three types of plate boundaries: divergent, convergent and transform. ______________________________ are ...
Consequences of Rift Propagation and Transform Fault Migration in
... subsidence that accommodates the thickening of the volcanic upper crustal units (Pálmason, 1986) are probably confined to the brittle, seismogenic, upper 10 km of the crust (Stefánsson et al., 1993). At least beneath the active rift zones, the upper crust is probably decoupled from hot, mechanically ...
... subsidence that accommodates the thickening of the volcanic upper crustal units (Pálmason, 1986) are probably confined to the brittle, seismogenic, upper 10 km of the crust (Stefánsson et al., 1993). At least beneath the active rift zones, the upper crust is probably decoupled from hot, mechanically ...
chapter 8 ocean in the earth system
... carbon dioxide) in photosynthesis. As discussed later in this chapter, sunlight does not penetrate in quantities adequate for photosynthesis at depths greater than about 100 m (330 ft). Downwelling, the downward motion of surface water, transports oxygen-rich surface waters to great depths in the oc ...
... carbon dioxide) in photosynthesis. As discussed later in this chapter, sunlight does not penetrate in quantities adequate for photosynthesis at depths greater than about 100 m (330 ft). Downwelling, the downward motion of surface water, transports oxygen-rich surface waters to great depths in the oc ...
Oceanography – EXAM 1 Review Questions
... 1) The four principal ocean basins (plus an additional ocean) on Earth are the: A) Atlantic, Arctic, Mediterranean, Southern, and Pacific Oceans. B) Atlantic, Pacific, Indian, Southern, and Arctic Oceans. C) Atlantic, Antarctic, Southern, Mediterranean, and Pacific Oceans. D) Antarctic, Caspian, Sou ...
... 1) The four principal ocean basins (plus an additional ocean) on Earth are the: A) Atlantic, Arctic, Mediterranean, Southern, and Pacific Oceans. B) Atlantic, Pacific, Indian, Southern, and Arctic Oceans. C) Atlantic, Antarctic, Southern, Mediterranean, and Pacific Oceans. D) Antarctic, Caspian, Sou ...
ap® environmental science 2014 scoring guidelines
... (1 point for a correct description of the establishment of organisms where bare rock/ash/sand/inorganic substrate, or no soil previously existed) (ii) Explain how primary succession can lead to soil formation on a newly formed volcanic landscape. (2 points: 1 point for a correct explanation of the r ...
... (1 point for a correct description of the establishment of organisms where bare rock/ash/sand/inorganic substrate, or no soil previously existed) (ii) Explain how primary succession can lead to soil formation on a newly formed volcanic landscape. (2 points: 1 point for a correct explanation of the r ...
9 - Mr. Neason`s Earth Science
... During the mid-1800’s, several nations sent ships on scientific expeditions to gather data about the oceans. Scientists wanted to know more about the topography of the ocean floor. Data from the middle of the Atlantic Ocean, revealed large undersea mountains. 1900s the discovery of Sonar (Sound Navi ...
... During the mid-1800’s, several nations sent ships on scientific expeditions to gather data about the oceans. Scientists wanted to know more about the topography of the ocean floor. Data from the middle of the Atlantic Ocean, revealed large undersea mountains. 1900s the discovery of Sonar (Sound Navi ...
stress that occurs when an object is squeezed
... The East African Rift is an active continental rift zone in eastern Africa. The rift is a narrow zone in which the African Plate is in the process of splitting into two new tectonic plates called the Somali Plate and the Nubian Plate, which are sub plates or protoplates. http://ajs-geo-blog.blogspot ...
... The East African Rift is an active continental rift zone in eastern Africa. The rift is a narrow zone in which the African Plate is in the process of splitting into two new tectonic plates called the Somali Plate and the Nubian Plate, which are sub plates or protoplates. http://ajs-geo-blog.blogspot ...
GEOELECTRIC STRUCTURE AND LITHOLOGY BENEATH THE
... The resistivity results acquisition and processing was reviewed and Schlumberger array was found to be more effective when dealing with zones of high resistivity and shallow in nature. Twenty eight (28) vertical electrical soundings (VES) were conducted within the area of study using the Schlumberge ...
... The resistivity results acquisition and processing was reviewed and Schlumberger array was found to be more effective when dealing with zones of high resistivity and shallow in nature. Twenty eight (28) vertical electrical soundings (VES) were conducted within the area of study using the Schlumberge ...
SEISMIC TOMOGRAPHY OF THE ARABIAN
... The Arabian-Eurasian plate boundary is extremely complex, and it is an ideal region to study a young (geologically) continent-continent collision belt. The current tectonics of the region are controlled by the collision and continuing convergence of the Arabian and Eurasian plates. The Arabian and E ...
... The Arabian-Eurasian plate boundary is extremely complex, and it is an ideal region to study a young (geologically) continent-continent collision belt. The current tectonics of the region are controlled by the collision and continuing convergence of the Arabian and Eurasian plates. The Arabian and E ...
Metamorphic Rocks ppt
... A recent calculated growth rate for garnet crystals taken from a metamorphic rock in Vermont = 1.4 mm per million years ...
... A recent calculated growth rate for garnet crystals taken from a metamorphic rock in Vermont = 1.4 mm per million years ...
Lecture C - Ocean Crust and Ophiolites
... – E.g. Mid-Atlantic Ridge - half rate 1-2 cm per year – Symmetrical about the ridge ...
... – E.g. Mid-Atlantic Ridge - half rate 1-2 cm per year – Symmetrical about the ridge ...
Plate Tectonics Study Guide 1. What are the longest mountain
... 1. What are the longest mountain ranges on Earth? 2. Along the ocean floor, where do you find the oldest crust? The youngest? 3. What was Alfred Wegener’s theory, and what evidence did he have that it was correct? 4. Describe the direction of movement of the plates at each boundary type. 5. What pro ...
... 1. What are the longest mountain ranges on Earth? 2. Along the ocean floor, where do you find the oldest crust? The youngest? 3. What was Alfred Wegener’s theory, and what evidence did he have that it was correct? 4. Describe the direction of movement of the plates at each boundary type. 5. What pro ...
Divergent boundaries
... shortly after its formation 4.6 billion years ago. The Earth's unchanging size implies that the crust must be destroyed at about the same rate as it is being created, as Harry Hess surmised. Such destruction (recycling) of ...
... shortly after its formation 4.6 billion years ago. The Earth's unchanging size implies that the crust must be destroyed at about the same rate as it is being created, as Harry Hess surmised. Such destruction (recycling) of ...
Development of the Theory of Plate Tectonics
... could this be? This answer lies in the magnetite in volcanic rock. Grains of magnetite -- behaving like little magnets -- can align themselves with the orientation of the Earth's magnetic field. When magma (molten rock containing minerals and gases) cools to form solid volcanic rock, the alignment o ...
... could this be? This answer lies in the magnetite in volcanic rock. Grains of magnetite -- behaving like little magnets -- can align themselves with the orientation of the Earth's magnetic field. When magma (molten rock containing minerals and gases) cools to form solid volcanic rock, the alignment o ...
CEUS Eq Overview
... Consensus opinions from the 2009 USGS workshop: CEUS seismicity concentrates in distinct zones and there are no zones that have escaped detection. Tectonic inheritance plays an important role in the location of intraplate seismic zones; most intraplate seisimic zones are associated with rifted crus ...
... Consensus opinions from the 2009 USGS workshop: CEUS seismicity concentrates in distinct zones and there are no zones that have escaped detection. Tectonic inheritance plays an important role in the location of intraplate seismic zones; most intraplate seisimic zones are associated with rifted crus ...
EQ AND INTERIOR online
... After watching the video and reading the Lecture Notes on Earthquakes, use the seismogram below and Travel Time Curves #1 to answer questions 5 and 6. 5. Determine the S-P lag time (also called the S-P travel time) for the following seismogram. ...
... After watching the video and reading the Lecture Notes on Earthquakes, use the seismogram below and Travel Time Curves #1 to answer questions 5 and 6. 5. Determine the S-P lag time (also called the S-P travel time) for the following seismogram. ...
Bellringer: Oceans are not just places… The Water Planet
... Rifts: huge pieces of oceanic crust separated at ...
... Rifts: huge pieces of oceanic crust separated at ...
d6 Lithosphere, asthenosphere, mesosphere - e
... The shell of rock above the asthenosphere is called the lithosphere (Gk. lithos, stone). The lithosphere as its name implies is more rigid than the asthenosphere. It is important to remember that the names crust and lithosphere are not synonyms. The crust, the upper part of the lithosphere, is conti ...
... The shell of rock above the asthenosphere is called the lithosphere (Gk. lithos, stone). The lithosphere as its name implies is more rigid than the asthenosphere. It is important to remember that the names crust and lithosphere are not synonyms. The crust, the upper part of the lithosphere, is conti ...