The Sea Floor
... Explains the origin of connections between earthquakes, volcanoes, faults, continental drift, and sea floor spreading. Explains how oceans and its features are formed. ...
... Explains the origin of connections between earthquakes, volcanoes, faults, continental drift, and sea floor spreading. Explains how oceans and its features are formed. ...
Ocean Floor Soundwaves.usgs.gov The continental shelf is that part
... Continental shelves are very flat and their widths vary. The continental slope begins at the shelf edge, where water depth begins to increase rapidly. The continental rise descends gradually from the continental slope to the ocean floor. It is considered part of the ocean basin rather than part of t ...
... Continental shelves are very flat and their widths vary. The continental slope begins at the shelf edge, where water depth begins to increase rapidly. The continental rise descends gradually from the continental slope to the ocean floor. It is considered part of the ocean basin rather than part of t ...
Unit 3 Geology - Manatee School For the Arts / Homepage
... ocean basin Produced by waves that constantly erode land mass and by natural dams, reefs, rocks, and volcanic barriers. ...
... ocean basin Produced by waves that constantly erode land mass and by natural dams, reefs, rocks, and volcanic barriers. ...
Script - FOG - City College of San Francisco
... Let’s stay in the Atlantic and move outward across the abyssal plains. What will we encounter in the middle? The seafloor should become more rugged as it approaches the mid-ocean ridge that marks the divergent plate boundary and seafloor spreading center. What will that look like? Rough topography a ...
... Let’s stay in the Atlantic and move outward across the abyssal plains. What will we encounter in the middle? The seafloor should become more rugged as it approaches the mid-ocean ridge that marks the divergent plate boundary and seafloor spreading center. What will that look like? Rough topography a ...
File - Science by Shaw
... the outer most layer of the earth _________ a great cosmic explosion_________ a fairly rigid layer of the earth that is composed of the crust and the uppermost part of the mantle _________ the suggestion that all continents had once been joined in a single “supercontinent”, but have drifted apart. _ ...
... the outer most layer of the earth _________ a great cosmic explosion_________ a fairly rigid layer of the earth that is composed of the crust and the uppermost part of the mantle _________ the suggestion that all continents had once been joined in a single “supercontinent”, but have drifted apart. _ ...
Unit 1
... across the shelves and eroded deep canyons. When the sea level rose, these canyons gave rise to much larger submarine canyons. ii. Examples include Monterey submarine canyon and La Jolla trench. ...
... across the shelves and eroded deep canyons. When the sea level rose, these canyons gave rise to much larger submarine canyons. ii. Examples include Monterey submarine canyon and La Jolla trench. ...
Plate Tectonics
... had once been joined together in a single landmass and have drifted apart since. Wegener named this supercontinent Pangaea. Wegener’s theory was rejected by scientists because he could not explain what force pushes or pulls continents. ...
... had once been joined together in a single landmass and have drifted apart since. Wegener named this supercontinent Pangaea. Wegener’s theory was rejected by scientists because he could not explain what force pushes or pulls continents. ...
Continental Margins
... Starting in the deepest part of the ocean, Mysteries of the Deep takes us to a secret and magical world beneath the surface where for the first time in human history, technology is allowing us to explore the darkness and crushing pressure of the deep seas to reveal a strange world full of mystery an ...
... Starting in the deepest part of the ocean, Mysteries of the Deep takes us to a secret and magical world beneath the surface where for the first time in human history, technology is allowing us to explore the darkness and crushing pressure of the deep seas to reveal a strange world full of mystery an ...
Chapter 2
... Trenches :the deepest part of the ocean floor Rift Zone: break in the earth’s crust from which lava flows and new seafloor forms. Seamounts :submarine volcanoes Guyots: flat-topped volcanoes (INACTIVE) Abyssal Plain: flat part of seafloor Abyssal Hills : small hills Plateaus: flat-topped mountains ...
... Trenches :the deepest part of the ocean floor Rift Zone: break in the earth’s crust from which lava flows and new seafloor forms. Seamounts :submarine volcanoes Guyots: flat-topped volcanoes (INACTIVE) Abyssal Plain: flat part of seafloor Abyssal Hills : small hills Plateaus: flat-topped mountains ...
Plate Tectonics Notes
... This layer is known as the _____________ A _________ is one of numerous rigid sections of the _____________ that move as a unit over the material of the _ _ _ __ _ _ _ _ _ _ _ _ _ _ Types of Plate Boundaries __________________ (also called spreading centers) are the place where two plates move apar ...
... This layer is known as the _____________ A _________ is one of numerous rigid sections of the _____________ that move as a unit over the material of the _ _ _ __ _ _ _ _ _ _ _ _ _ _ Types of Plate Boundaries __________________ (also called spreading centers) are the place where two plates move apar ...
Mountain Belts formed at Divergent and Convergent Boundaries
... along the crest of the ridges to create new oceanic crust. As the crust moves away from the ridge it gets older and becomes thicker and more dense, sinking deeper into the asthenosphere, therefore lowering elevation. ...
... along the crest of the ridges to create new oceanic crust. As the crust moves away from the ridge it gets older and becomes thicker and more dense, sinking deeper into the asthenosphere, therefore lowering elevation. ...
Continental Drift - The Cyberworld of Deepsea Dawn, Oregon
... – PLATE TECTONICS – surface of earth composed of “plates” (LITHOSPHERE) that move on a “conveyor belt” (ASTHENOSPHERE) ...
... – PLATE TECTONICS – surface of earth composed of “plates” (LITHOSPHERE) that move on a “conveyor belt” (ASTHENOSPHERE) ...
Ocean Floor Power Point
... •Depth ranges from 200 meters to 4000 meters •Continent ends at bottom of continental slope ...
... •Depth ranges from 200 meters to 4000 meters •Continent ends at bottom of continental slope ...
chapter 5 section 1
... floor that extends outward from the edge of a continent • Depth of 130 meters and gets steeper ...
... floor that extends outward from the edge of a continent • Depth of 130 meters and gets steeper ...
Seafloor Spreading - Perry Local Schools
... •The weaknesses between the diverging plates fill with molten rock from below. Sea water cools the molten rock, which quickly turns to rock, and pushes the older rock to the outside. •This continuous process builds a chain of volcanoes and rift valleys called a Mid Ocean Ridge. ...
... •The weaknesses between the diverging plates fill with molten rock from below. Sea water cools the molten rock, which quickly turns to rock, and pushes the older rock to the outside. •This continuous process builds a chain of volcanoes and rift valleys called a Mid Ocean Ridge. ...
ES Ch 3 Test
... ______ 1. According to Wegener’s hypothesis of continental drift, a. Earth’s surface is made up of seven major landmasses. b. the continents do not move. c. Earth is slowly cooling and shrinking. d. the continents were once joined together in a single landmass. ______ 2. What is Pangaea? a. the name ...
... ______ 1. According to Wegener’s hypothesis of continental drift, a. Earth’s surface is made up of seven major landmasses. b. the continents do not move. c. Earth is slowly cooling and shrinking. d. the continents were once joined together in a single landmass. ______ 2. What is Pangaea? a. the name ...
CHAPTER 13 THE OCEAN FLOOR
... less than 3 m of relief over a distance that may exceed 1300 km. Scientists determined that abyssal plains low relief is due to the fact that thick accumulations of sediment, transported by turbidity currents, have buried rugged ocean floor. Abyssal plains are more extensive in the Atlantic Ocean th ...
... less than 3 m of relief over a distance that may exceed 1300 km. Scientists determined that abyssal plains low relief is due to the fact that thick accumulations of sediment, transported by turbidity currents, have buried rugged ocean floor. Abyssal plains are more extensive in the Atlantic Ocean th ...
Name____________________________
... Continental Crust: Less-dense crust that makes up the continents. Continental Drift: A theory stating that the Earth's continents have been joined together and have moved away from each other at different times in the Earth's history. Pangaea: Single, giant landmass, or continent, that later broke a ...
... Continental Crust: Less-dense crust that makes up the continents. Continental Drift: A theory stating that the Earth's continents have been joined together and have moved away from each other at different times in the Earth's history. Pangaea: Single, giant landmass, or continent, that later broke a ...
Abyssal plain
An abyssal plain is an underwater plain on the deep ocean floor, usually found at depths between 3000 and 6000 m. Lying generally between the foot of a continental rise and a mid-ocean ridge, abyssal plains cover more than 50% of the Earth’s surface. They are among the flattest, smoothest and least explored regions on Earth. Abyssal plains are key geologic elements of oceanic basins (the other elements being an elevated mid-ocean ridge and flanking abyssal hills). In addition to these elements, active oceanic basins (those that are associated with a moving plate tectonic boundary) also typically include an oceanic trench and a subduction zone.Abyssal plains were not recognized as distinct physiographic features of the sea floor until the late 1940s and, until very recently, none had been studied on a systematic basis. They are poorly preserved in the sedimentary record, because they tend to be consumed by the subduction process. The creation of the abyssal plain is the end result of spreading of the seafloor (plate tectonics) and melting of the lower oceanic crust. Magma rises from above the asthenosphere (a layer of the upper mantle) and as this basaltic material reaches the surface at mid-ocean ridges it forms new oceanic crust. This is constantly pulled sideways by spreading of the seafloor. Abyssal plains result from the blanketing of an originally uneven surface of oceanic crust by fine-grained sediments, mainly clay and silt. Much of this sediment is deposited by turbidity currents that have been channelled from the continental margins along submarine canyons down into deeper water. The remainder of the sediment is composed chiefly of pelagic sediments. Metallic nodules are common in some areas of the plains, with varying concentrations of metals, including manganese, iron, nickel, cobalt, and copper. These nodules may provide a significant resource for future mining ventures.Owing in part to their vast size, abyssal plains are currently believed to be a major reservoir of biodiversity. The abyss also exerts significant influence upon ocean carbon cycling, dissolution of calcium carbonate, and atmospheric CO2 concentrations over timescales of 100–1000 years. The structure and function of abyssal ecosystems are strongly influenced by the rate of flux of food to the seafloor and the composition of the material that settles. Factors such as climate change, fishing practices, and ocean fertilization are expected to have a substantial effect on patterns of primary production in the euphotic zone. This will undoubtedly impact the flux of organic material to the abyss in a similar manner and thus have a profound effect on the structure, function and diversity of abyssal ecosystems.