Chapter 34: The Changing Face of the Earth
... of all sizes, and thus acts very much like sandpaper. Valley glaciers gouge and scoop out the valleys they occupy, modifying them into U-shaped troughs. The topography between adjacent glaciated valleys is often angular and sharp. Continental glaciers scrape and scour the rocks over which they flow, ...
... of all sizes, and thus acts very much like sandpaper. Valley glaciers gouge and scoop out the valleys they occupy, modifying them into U-shaped troughs. The topography between adjacent glaciated valleys is often angular and sharp. Continental glaciers scrape and scour the rocks over which they flow, ...
GGOS, ECGN and NGOS: Global and regional geodetic observing
... of upper mantle are slow, and and this viscoelastic phase takes tens on thousands of years. The Fennoscandian uplift is now in this phase. Gravity change combined with uplift information will give hints what happens in the lithosphere/upper mantle. ...
... of upper mantle are slow, and and this viscoelastic phase takes tens on thousands of years. The Fennoscandian uplift is now in this phase. Gravity change combined with uplift information will give hints what happens in the lithosphere/upper mantle. ...
Postglacial Rebound & Mantle Flow
... Main mechanisms for creep: Movement of imperfections in crystal lattice (dislocations & vacancies) ...
... Main mechanisms for creep: Movement of imperfections in crystal lattice (dislocations & vacancies) ...
Final Exam Topics
... Regimes of erosion, deposition and transportation of sediment on the grain size-velocity plot, Stream erosion as a result of hydraulic action, solution and abrasion, Transportation of sediment in bedload, suspension and solution loads, Potholes, Meanders, Point bars, Why erosion and deposition is as ...
... Regimes of erosion, deposition and transportation of sediment on the grain size-velocity plot, Stream erosion as a result of hydraulic action, solution and abrasion, Transportation of sediment in bedload, suspension and solution loads, Potholes, Meanders, Point bars, Why erosion and deposition is as ...
When Continents Collide by Ole Hendrickson Slow
... years each. But during the past million years the cycles lengthened to 100 thousand years. Intense cold periods created continental-scale ice sheets. The last of these, the Laurentide Ice Sheet, flowed southwest from the region of Hudson Bay. It reached the Ottawa Valley around 60,000 years ago, cov ...
... years each. But during the past million years the cycles lengthened to 100 thousand years. Intense cold periods created continental-scale ice sheets. The last of these, the Laurentide Ice Sheet, flowed southwest from the region of Hudson Bay. It reached the Ottawa Valley around 60,000 years ago, cov ...
Chapter 1 - novacentral.ca
... The terminal moraine marks the furthest extent of the glacier. The layers of silt in an outwash plain can indicate direction of glacier movement. fine particles would be at the leading edge while larger particles would have been closer to the glacier. ...
... The terminal moraine marks the furthest extent of the glacier. The layers of silt in an outwash plain can indicate direction of glacier movement. fine particles would be at the leading edge while larger particles would have been closer to the glacier. ...
Laurentide Ice Sheet
... influence on climate, life, the oceans, and the level of the land. The ice sheet provided a permanent source of Arctic air in the middle latitudes as it established itself as far south as 40° in the area south of the Great Lakes. BROCCOLI and MANABE (1987), in one of the papers that follows, explore ...
... influence on climate, life, the oceans, and the level of the land. The ice sheet provided a permanent source of Arctic air in the middle latitudes as it established itself as far south as 40° in the area south of the Great Lakes. BROCCOLI and MANABE (1987), in one of the papers that follows, explore ...
Unit 1 Landforms and Water Forms
... physical and chemical weathering. Changes in temperature create physical weathering such as rock fracture and temperature-induced weathering. The greater the change in temperature and the more often they occur, the greater the rate of physical weathering. Areas where heavy raining occurs may result ...
... physical and chemical weathering. Changes in temperature create physical weathering such as rock fracture and temperature-induced weathering. The greater the change in temperature and the more often they occur, the greater the rate of physical weathering. Areas where heavy raining occurs may result ...
Unit C UA pt B - LD Industries
... ________ - a very large glacier, often more than 1 km in depth, that forms in polar regions ________ - a glacier that forms in mountainous regions at high elevations ________ - information gathered from ice samples extracted from drilling into an ice sheet ________ - the last glaciation period 14. D ...
... ________ - a very large glacier, often more than 1 km in depth, that forms in polar regions ________ - a glacier that forms in mountainous regions at high elevations ________ - information gathered from ice samples extracted from drilling into an ice sheet ________ - the last glaciation period 14. D ...
Isostatic Rebound-Actvity writeup.pages
... pushed and deformed like silly puKy in response to the warmth of the Earth. It is viscous-‐ meaning it has a thick, s1cky consistency between solid and liquid. These rocks actually flow, moving in ...
... pushed and deformed like silly puKy in response to the warmth of the Earth. It is viscous-‐ meaning it has a thick, s1cky consistency between solid and liquid. These rocks actually flow, moving in ...
I. Destructive Forces Notes: A. Weathering: the breaking down of
... 3. Erosion by Ice A glacier is mass of ice and snow moving under the influence of gravity. Snow accumulating over many years without melting eventually compacts into glacial ice. Glaciers erode the surface of the Earth in two ways: 1. Abrasion (rock materials carried by the glacial ice scrape and gr ...
... 3. Erosion by Ice A glacier is mass of ice and snow moving under the influence of gravity. Snow accumulating over many years without melting eventually compacts into glacial ice. Glaciers erode the surface of the Earth in two ways: 1. Abrasion (rock materials carried by the glacial ice scrape and gr ...
Earth Science Prerequisites to High School Content Expectations
... E4.p2I Identify major global wind belts (trade winds, prevailing westerlies, and polar easterlies) and that their vertical components control the global distribution of rainforests and deserts. E4.p3 Glaciers (prerequisite) Glaciers are large bodies of ice that move under the influence of gravity. T ...
... E4.p2I Identify major global wind belts (trade winds, prevailing westerlies, and polar easterlies) and that their vertical components control the global distribution of rainforests and deserts. E4.p3 Glaciers (prerequisite) Glaciers are large bodies of ice that move under the influence of gravity. T ...
Exam #2 - MSU Billings
... 14. Why do we have such good dates on many fossil beds of the Western United States? a. Because we know how old the fossils are b. Because terrestrial sedimentary rocks such as those formed in rivers, contain many dinosaur species, which only existed before 65 million years ago c. Because fossil-ric ...
... 14. Why do we have such good dates on many fossil beds of the Western United States? a. Because we know how old the fossils are b. Because terrestrial sedimentary rocks such as those formed in rivers, contain many dinosaur species, which only existed before 65 million years ago c. Because fossil-ric ...
Y9GeU6A Antarctica Intro PPwk26
... ice can be as much as 3,000m below sea level. So they weren’t filled with ice, large parts of Antarctica would be under the sea. ...
... ice can be as much as 3,000m below sea level. So they weren’t filled with ice, large parts of Antarctica would be under the sea. ...
Chapter One – Fire and Ice
... Glaciers are formed when snow packs never completely melt. Over time, the snow pack gets deeper and heavier from new snowfall. Snow is compressed by its own weight. Weight changes the structure of the snow. Snow crystals will start to fit tightly together to form layers of ice. As this ice thickens, ...
... Glaciers are formed when snow packs never completely melt. Over time, the snow pack gets deeper and heavier from new snowfall. Snow is compressed by its own weight. Weight changes the structure of the snow. Snow crystals will start to fit tightly together to form layers of ice. As this ice thickens, ...
- Catalyst - University of Washington
... During the Cenozoic Era several important tectonic events occurred that had a major impact on the onset of the Cenozoic cooling: 1. Following the break-up of Pangaea North America and Eurasia migrated to high latitudes, 2. Antarctica was situated over the South Pole, 3. The Circum-Antarctic Current ...
... During the Cenozoic Era several important tectonic events occurred that had a major impact on the onset of the Cenozoic cooling: 1. Following the break-up of Pangaea North America and Eurasia migrated to high latitudes, 2. Antarctica was situated over the South Pole, 3. The Circum-Antarctic Current ...
Powerpoint for today
... What steps are you willing to take to reduce your carbon dioxide footprint? A: Walk/bike/bus to work B: Unplug appliances when not in use C: Replace light bulbs with compact fluorescents ...
... What steps are you willing to take to reduce your carbon dioxide footprint? A: Walk/bike/bus to work B: Unplug appliances when not in use C: Replace light bulbs with compact fluorescents ...
Lecture #6 Causes of Ice Ages & Glacial
... latitudinal distribution of the continental land masses and configuration of the ocean basins. An equatorial current existed along the Tethyan Seaway. Increased sea floor spreading added CO2 to the atmosphere directly from volcanism, and indirectly by causing the ocean floor to be more buoyant, whic ...
... latitudinal distribution of the continental land masses and configuration of the ocean basins. An equatorial current existed along the Tethyan Seaway. Increased sea floor spreading added CO2 to the atmosphere directly from volcanism, and indirectly by causing the ocean floor to be more buoyant, whic ...
Geology 3015 Lecture Notes Week 12
... • Glaciers are moving solids and can erode and transport huge amounts of material, especially sediment, and soil. • Bulldozing takes place as a glacier shoves or pushes unconsolidated material along its path. Plucking results when glacial ice freezes in the crevices of a bedrock projection and event ...
... • Glaciers are moving solids and can erode and transport huge amounts of material, especially sediment, and soil. • Bulldozing takes place as a glacier shoves or pushes unconsolidated material along its path. Plucking results when glacial ice freezes in the crevices of a bedrock projection and event ...
- bYTEBoss
... ice can be as much as 3,000m below sea level. So they weren’t filled with ice, large parts of Antarctica would be under the sea. ...
... ice can be as much as 3,000m below sea level. So they weren’t filled with ice, large parts of Antarctica would be under the sea. ...
1 - University of Arkansas
... 38. Gabbro and basalt are different in _______. a. texture c. mineralogy b. chemistry d. the kind of magma that each crystallized from 39. Silt and clay size grains that are carried in the stream water above the bed are said to move by _____________. a. solution c. traction b. suspension d. rolling ...
... 38. Gabbro and basalt are different in _______. a. texture c. mineralogy b. chemistry d. the kind of magma that each crystallized from 39. Silt and clay size grains that are carried in the stream water above the bed are said to move by _____________. a. solution c. traction b. suspension d. rolling ...
Isostasy and Large Scale Gravity Chap. 9 Homework Answers (Dec
... a liquid (the ocean), we can assume isostatic equilibrium is operative. Isostatic equilibrium implies that the mass of the ice above the sea level is proportional to the density difference between the ice and the liquid. Note that the density contrast between the ice and water is key and because the ...
... a liquid (the ocean), we can assume isostatic equilibrium is operative. Isostatic equilibrium implies that the mass of the ice above the sea level is proportional to the density difference between the ice and the liquid. Note that the density contrast between the ice and water is key and because the ...
GEOS 110 Fall 2011 Test 2 Study Guide Test cover`s Chapters: 5
... 40. Where is the cryosphere, what different frozen forms does it take and where are the thickest ice caps? 41. How does snow/ice/ice shelf cover affect: 1) overlying air temperatures, 2) underlying land temperatures, 3) underlying sea temperatures? 42. What is permafrost and what kind of hazards doe ...
... 40. Where is the cryosphere, what different frozen forms does it take and where are the thickest ice caps? 41. How does snow/ice/ice shelf cover affect: 1) overlying air temperatures, 2) underlying land temperatures, 3) underlying sea temperatures? 42. What is permafrost and what kind of hazards doe ...
GEOS 110 Fall 2013 Test 2 Study Guide
... 40. Where is the cryosphere, what different frozen forms does it take and where are the thickest ice caps? 41. How does snow/ice/ice shelf cover affect: 1) overlying air temperatures, 2) underlying land temperatures, 3) underlying sea temperatures? 42. What is permafrost and what kind of hazards doe ...
... 40. Where is the cryosphere, what different frozen forms does it take and where are the thickest ice caps? 41. How does snow/ice/ice shelf cover affect: 1) overlying air temperatures, 2) underlying land temperatures, 3) underlying sea temperatures? 42. What is permafrost and what kind of hazards doe ...
Ice-sheet dynamics
Ice sheet dynamics describe the motion within large bodies of ice, such those currently on Greenland and Antarctica. Ice motion is dominated by the movement of glaciers, whose gravity-driven activity is controlled by two main variable factors: the temperature and strength of their bases. A number of processes alter these two factors, resulting in cyclic surges of activity interspersed with longer periods of inactivity, on both hourly and centennial time scales. Ice-sheet dynamics are of interest in modelling future sea level rise.