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25 Cards in this Set
- Front
- Back
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End Morraine
Recessional Morraine Terminal morraine |
Debris collects at the front of the glacier as it moves forward
Ridge of sediment deposited when a glacier stalls in its retreat and leaves the end moraine (the crap at the end while it's moving) behind An end moraine when its all over; the glacier melts and there's a bunch of crap left behind that is the terminal morraine |
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transverse dunes
Parabolic dunes Longitudinal dunes |
ridges that form perpendicular to the wind direction with plentiful sand and moderate wind.
Transverse dunes that the wind breaks thru to form crecents Form paralell to the wind direction. High wind, plentiful sand |
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Glacial Striation
vs Glacial Polish |
Striation=pebbles, boulders, cobbles
Polish=sand, silt |
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Head Scarp
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The curving part of the slump where it collapses
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Berm
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Horizontal landward sloping terraces that received sediment during a storm
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Parabolic Dunes
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Transverse dunes that the wind has broken through and now are crecent-shaped
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Hogback
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Narrow ridge formed when cliff retreat acts on vertical layers
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Deflation
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lowering of land surface by wind erosion
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Breakwater
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Paralell to beach to lessen the force of the waves.
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Turbidity currents
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turbulent much of suspended sediment that avalanches downslope. Graded beds
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Subtropical deserts
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20-30 degrees lattitude
cold dry air is sinking |
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Monsoonage
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Summer, land is hotter than ocean, hot low pressure air rises.-->storms
Winter, reverses and cool high pressure air sinks-->no storms |
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Insellberg
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Small island of rock left after cliff retreat
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Toe
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Bottom of slump where debris mound up
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Beach Face
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Steep;forms where swash scoured the land
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Desert
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no permenant streams
15% vegetation 25 cm rain/year |
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Desert Pavement
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mosaic like pattern caused by lag deposits
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Blowout
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caused by turbulent wind vortex
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Archean Period
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o Earliest simple-celled life-3 billion years old
Stratonaoluite-layers of cyanobacteria that trap carbonate mud in warm, shallow seas Other simple types of bacteria Essentially, Bacteria |
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Proterozoic Period
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Shift from anaerobic to aerobic life forms
First eukaryotic (internal organs) life Multicellular algae |
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Early Paleozoic
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Explosion of marine life
Earliest reefs |
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Mid-Late Paleozoic
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Vertibrates arise
Amphibians Insects Reptiles Trees and Forests Sharks and fish |
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Mesozoic
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Dinosaurs
First mammals Early birds First flowering plants |
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Cenozoic
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All modern life
Mammals dominate land, return to ocean Hominids |
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Order of the periods
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Archean
Proterozoic Paleozoic Mesozoic Cenozoic the Acheva is Plainly a Metro Car |
