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| _______was the flora that was widely distributed throughout the once contiguous,, late Paleozoic Southern Hemisphere landmass. |
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In the early part of the 20th century, argued forcefully for continental drift |
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| The former, later Paleozoic super continent is known as . |
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Today, is in about the same geographic position as during late Paleozoic time. |
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| Which of the following paleoclimatic evidence supports the idea of the late Paleozoic super continent in the outhern Hemisphere? |
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| tillities (rocks formed by glaciers) in South Africa and South America |
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| The is an example of an active, continent-continent collision? |
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| northern movement of India into Eurasia |
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| Pull-apart, rift zones are generally associated with a plate boundary |
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| The temperature below which magnetic material can retain a permanent magnetization is called the . |
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| Deep-focus earthquakes, those between 300 and 700 kilometers below the surface, occure only in association with . |
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| Deep-focus earthquakes, those between 300 and 700 kilometers below the surface, occure only in association with . |
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A very long-lived magma sourced located deep in the mantle is called a
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| Linear, magnetic patterns associated with mid-ocean ridges are configured as . |
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| normal and reversed magnetized strips roughly parallel to the ridge |
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| The is (are) a logical evolutionary analog of the African Rift Valleys ten million years from now. |
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| A typical rate of seafloor spreading in the Atlantic Ocean is . |
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| Which of the following energy sources is thought to drive the lateral motions of Earth's lithosphere plates? |
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| export of heat from deep in the mantle to the top of the asthenosphere |
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| The continental drift hypothesis was rejected primarly because Alfred Wegener could not . |
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| identify a mechanism capable of mving continents |
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| All of the following are evidence supporting the theory of plate tectonics except for . |
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| Changes in the Moon's orbit due to shifting plates |
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| Deep-focus earthquakes are associated with plate boundaries |
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| Deep-focus earthquakes are associated with plate boundaries |
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| was never proposed as evidence supporting the existence of Pangaea. |
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| Island of Proterozoic rocks along the Mid-Atlantic Ridge |
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| Which one of the following most accurately describes the volcanoes of the Hawiian Islands? |
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| shield volcanoes fed by a long-lived hot spot below the Pacific lithosphere plate |
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| Which of the following statements apply to the asthenosphere, but not the lithosphere? |
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| zone in the upper mantle that deforms by plastic flowage |
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| The top of the asthenosphere is closest to Earth's surface . |
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| The top of the asthenosphere is closest to Earth's surface . |
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| New oceanic crust and lithosphere are formed at . |
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| divergent boundaries by submarine eruptions and intrusions of basaltic magma |
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Cooler, older, oceanic lithosphere sink into the mantle at . |
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| subductions zones along convergent plate boundaries |
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| Deep ocean trenches are surficial evidence for . |
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| sinking of oceanic lithosphere into the mantle at a subduction zone |
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| A transform plate boundary is characterized by . |
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| a deep, vertical fault along which two plates slide past one another in opposite directions |
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| plate boundaries have the largest magnitude earhquakes. |
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| Which one of the following is an important fundamental assumption underlying the plate tectonics theory? |
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| Earth's diameter has been essentially constant over time |
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| The modern-day Red Sea is explained by plate tectonics theory because it is . |
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| a rift zone that may eventually open into a major ocean if Aribia and Africa continue to separate |
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| The modern-day Red Sea is explained by plate tectonics theory because it is . |
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| a rift zone that may eventually open into a major ocean if Aribia and Africa continue to separate |
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| Mount St. Helens and the other Cascade volcanoes are . |
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| young, active stratovolcanoes built on a continental margin above a sinking slab of oceanic lithosphere |
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| Mount St. Helens and the other Cascade volcanoes are . |
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| young, active stratovolcanoes built on a continental margin above a sinking slab of oceanic lithosphere |
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| The were formed in the late Paleozoic when sediments in a marine basins were squeezed and crumpled between converging contienent. |
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| The volcanoes and deep valleys of east Africa are related to a . |
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| continental rift along which parts of the Africa continent are beginning to slowly spearate |
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| The volcanoes and deep valleys of east Africa are related to a . |
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| continental rift along which parts of the Africa continent are beginning to slowly spearate |
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| On the average, lithospheric plates are thick. |
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| The Aleutian Islands occure at the . |
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| convergent boundary on a volcanic arc above a northward-subducting Pacific plate |
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| most effectively outline the edges of the lithospheric plates. |
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| Lines of earthquakes epicenters |
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| Why is so much basaltic magma erupted along mid-ocean ridges? |
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| Lowered pressures decrease the temperatures at which basalt magma melt from a rising plume of mantle peridotite. |
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| Why is so much basaltic magma erupted along mid-ocean ridges? |
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| Lowered pressures decrease the temperatures at which basalt magma melt from a rising plume of mantle peridotite. |
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| Deep-oceanic trenches are most abundant around the rim of the ocean basin. |
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| Where would you drill to recover samples of the oldest basalts of the oceanic crust, which are Jurassic in age? |
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| oceanic side of the Aleutian trench |
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| first related the symmertical magnetic patterns in seafloor basalts to seafloor spreading at a mid-ocean ridge. |
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| Early results of the Deep Sea Drilling Project clearly justified the conclusion that . |
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| the ocean basins are relatively young; most ocean basin rocks and sediments are Cretaceous or younger in age |
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| Examine the words and / or phrases for each question below and determine the relationship among the majority of words / phrases. Choose the option which does not fit the pattern. |
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| Examine the words and / or phrases for each question below and determine the relationship among the majority of words / phrases. Choose the option which does not fit the pattern. |
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| Examine the words and / or phrases for each question below and determine the relationship among the majority of words / phrases. Choose the option which does not fit the pattern. |
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| Examine the words and / or phrases for each question below and determine the relationship among the majority of words / phrases. Choose the option which does not fit the pattern. |
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| Examine the words and / or phrases for each question below and determine the relationship among the majority of words / phrases. Choose the option which does not fit the pattern. |
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| Examine the words and / or phrases for each question below and determine the relationship among the majority of words / phrases. Choose the option which does not fit the pattern. |
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| plates are moving apart from the other |
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| plates are sliding past one another horizontally |
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| this boundary is normally devoid of volcanism |
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| characterized by basaltic volcanism and seafloor spreading |
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| characterized by arcs of stratovolcanoes and deep- ocean trenches |
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| where subduction zones occur |
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| the west coast of South America |
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