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Phyiscal Geology > Chapter 14 Shorelines, Glaciers, and Sea Level > Flashcards

Chapter 14 Shorelines, Glaciers, and Sea Level Flashcards

1
Q

The Unconsolidated sediment extending from low tide to the dunes or other topographic high is called?

A

Beaches

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2
Q

A continuation of a beach forming a point that extends into a body of water. Currents can cause the spit to curve are called?

A

Spits

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3
Q
  • Created when water piled up on the beach and transported laterally, flows back through the breaker zone
  • Rip Currents kill 100’s of swimmers each year
  • Swim Parallel to shore to escape is the origin of?
A

Rip Currents

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4
Q

A passive continental margin is the origin for what?

A

Barrier Islands

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5
Q

Elongated sand bodies parallel to the shoreline is called a?

A

Barrier Island

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6
Q

Depends on the sea level, if sea level rises the Island migrate landward is describing the

A

Future of Barrier Islands

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7
Q

Wind, waves, storm surge, and rainfall are examples of?

A

Hurricane Damage

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8
Q

alpine glacier= Mountain glacier- follow valleys, advance few cm/day is describing?

A

Valley Glaciers

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9
Q

Ice Sheet- huge mass of ice that flows out in all directions is describing?

A

Continental Glacier

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10
Q

At thickness > 50 meters is what stage movement of glaciers?

A

Plastic Flow

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11
Q

Entire ice mass slips, may move up to several meters per day is a stage movement of glaciers

A

Basil Slips

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12
Q

Brittle upper 50 meters, carried “piggyback” is a stage in movement of glaciers.

A

Zone of Fracture

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13
Q

Gaping cracks in zone of fracture when glacier flows over irregular terrain is a stage of what movement of glaciers

A

Crevasses

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14
Q

Snowfall > Snow melt

A

Zone of Accumulation

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15
Q

(Ablation) - snowfall

A

Zone of wastage

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16
Q

Outer limits of accumulation

A

Snow Line

17
Q
  • Lossens and lifts blocks of rocks

* melt water in cracks causes frost wedging

A

Plucking

18
Q

“Sand paper” effect of rock fragments is called?

A

Abrasion

19
Q

Silt- clay- sized pulverized rock is called?

A

Rock Flour

20
Q

Large rock fragments produce scratches and grooves is called?

A

Glacial Striations

21
Q

What is a U- Shaped valley?

A

Glacial Trough

22
Q

The Main glacier cut deeper valleys all ice melts and tributary valleys stand above main valley may produce water falls is called?

A

Hanging Valleys

23
Q

The Depressions on valley floor formed by erosion, forms string of lakes is called ?

A

Pater Noster Lakes

24
Q

A Bowl- shaped depression at head of glacial valley is called?

A

Cirque

25
Q

A Small lake in cirque is called?

A

Tarn

26
Q

A Sharp edged ridge, between two glacial valleys is called?

A

Arête

27
Q

Pyramid like peak, formed by 3 or more cirque is called

A

A Horn

28
Q

Pass from one valley into another is called?

A

A Col

Phyiscal Geology (6 decks)

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