Term
| How many glacier ages were during Precambrian? |
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Definition
| Three 2.2 by, 700 my (snowball earth), 500my |
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Term
| What are the dates for the two most recent ice ages? |
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Definition
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Term
| What are three pieces of evidence to prove ice age? |
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Definition
| Deep sea core in lake, Deep sea Core in Ocean, Ice Cores from Greenland |
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Term
| What are typical lengths of glacial and Interglacial? |
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Definition
Glacials-90,000
Interglacials-10,000 |
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Term
| What are two preconditions for ice age? |
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Definition
| Need land mass near poles, Need high elevations |
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Term
| What are the three causes for Glaciation? |
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Definition
| Volcanic Eruption, Meteorite Impact and Variation in Earth Orbits? |
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Term
| What are the three different types of varied orbits? |
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Definition
| Eccentricity, Obliquity, Pression |
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Term
| Explain eccentricity and cycle length |
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Definition
| ellipse to circle 100,000 |
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Term
| Describe obliquity and cycle |
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Definition
| Earth tilt wobbles from 21-24 degrees every 41,000 |
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Term
| Describe Pression and cycle |
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Definition
| Tilted axis changes direction and changes spot in cycle every year. Cycle 23,000 |
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Term
| What are two terrestrial factors (reasons why ice ages last longer) |
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Definition
| Ice makes increased albedo(reflectivity), Ocean Currents shut down and stop moving hot air |
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Term
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Definition
| A mass of snow and ice with evidence of movement pass or present |
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Term
| How much of land and do glaciers make up? |
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Definition
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Term
| How would sea levels rise it glaciers melted and how much would sea levels go down during ice age. |
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Definition
glaciers melted-230 feet up
Ice age-300 feet down |
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Term
| From top to bottom what is a glaciers make up |
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Definition
| snow,firn,crystalline Ice |
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Term
| At what time depth does a glacier turn ductile. |
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Definition
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Term
| What are the two ways glaciers move. |
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Definition
| Basal slip (move on base), PLastic Flow-moves along ductile zone/ice cleavages |
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Term
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Definition
| glaciers start DIPPIN, average of 50 meters, up to 110 |
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Term
| What are two reasons for ablations (ice lost)? |
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Definition
| Melting, Sublimation, Calving |
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Term
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Definition
| ice is lost through vapor without vapor because of pressure |
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Term
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Definition
| Ice breaks away and melts |
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Term
| What are the three times of glaciers? |
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Definition
| Alpine (in mountains) , Piedmount (in foothills merging Alpine, Continental Ice Sheet |
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Term
| What are two ways glaciers erode? |
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Definition
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Term
| What are two products of abrasion |
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Definition
| rock flour, glacial grooves |
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Term
| What are the nine erosional land forms? |
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Definition
| Rock Moutone, Glacial Grooves, Cirque, Arete`, Horn, Tarn, Hanging Valleys, U shaped Valleys, Subdue Topography |
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Term
| What are glacier deposits called? |
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Definition
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Term
| What are the two ways glaciers drop unstratified drift? |
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Definition
| Erractics (big boulders) and Morranes |
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Term
| Describe Morranines and the four varieties? |
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Definition
Debris pushed in front of a glacier. Terminal, End, Lateral Medial
Terminal (farthest distance), End (ones behind terminal), Lateral (on the side), Medial (debris between two merged mor |
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Term
| What are two varieties of depositional land forms that glaciers create. |
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Definition
| Till (unstratified), Stratified Drift. |
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Term
| What are the three types of stratified drift? |
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Definition
|
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Term
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Definition
| moraines that are smeared that are smeared |
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Term
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Definition
| Rivers underneath glaciers that deposit sediment. When glacier melts a long snaky mound is left |
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Term
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Definition
| Sediment that buries a large chunk of ice. When ice melts there is a depression that is left. If filled inn with water it is a kettle lake. |
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Term
| What was the the glacier lobe called that made a lake in Missoula |
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Definition
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Term
| What are the floods called that flooded eastern washington |
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Definition
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Term
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Definition
| When a glacier warps a hill by sanding down the first side and quarrying the other side. |
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Term
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Definition
| When a glacier rest on a mountain and leaves a bowl inpression |
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Term
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Definition
| when two cirque's meet and form a ridge |
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Term
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Definition
| When Three cirques meet together to form a point |
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Term
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Definition
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Term
|
Definition
| Valley leading into U-shape valley |
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Term
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Definition
| Glaciers that smooth of land |
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Term
| What is the island in the carnary islands has the most volcanic volcano, and what is that volcano named |
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Definition
| La Palma, Cumbre Vieja Volcano |
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Term
| When did a rock slip of La Palma and how large was it |
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Definition
|
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Term
| How large would the wave be that was created by la palma island |
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Definition
| 900 km high and 800 km/hour |
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Term
| What happened on Sep. 29, 1994 |
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Definition
| Geologist warned la conchita residents that possible land slide |
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Term
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Definition
| a 600ton wall of mud fell, 200 people losts 60 homes |
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Term
| When was the second land slide in La conchita? |
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Definition
| Second landslide 10 died 150 homes |
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Term
| What Island is pulling in Hawaiin Islands |
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Definition
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Term
| How often does the the tsunami happen from the Big Island |
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Definition
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Term
| Where does the Mississippi and end |
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Definition
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Term
| How much does Mississippi deposit |
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Definition
|
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Term
| When did Mississipii born? |
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Definition
| 200 mya out of rifted arm |
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Term
| How many died in 1993 floods? |
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Definition
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Term
| How big was vicksburg and st/ louis |
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Definition
| 37 deep 970 long, 18 deep 575 wide |
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Term
| How much of New Orleans flooded? |
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Definition
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Term
| When did the misssoula floods happpen. |
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Definition
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Term
| How much carbon was erupted in the air during the snow ball earth? |
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Definition
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Term
| Where is the hottest place on earth, in america? |
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Definition
libyan Desert-137
death Valley-136 |
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Term
| How much land could a Black roller cover |
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Definition
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Term
| What river was damed in Bretz Floods |
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Definition
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Term
| How deep was the lake in Missoula? |
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Definition
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Term
| How powerful was the river that flooded E WA |
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Definition
| more powerful than all rivers 50-75 km/h |
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Term
| What are the pieces of evidence for the Bretz Floods |
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Definition
| Huge Ripple Marks, Lava Scabs Giant Dry Water Fall Beds |
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