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Correlation 1 > Glaciers > Flashcards

Glaciers Flashcards

1
Q

thick mass of ice originating on land from the compaction and recrystallization of snow.

A

Glaciers

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2
Q

scientific study of glaciers or more generally ice and natural phenomena that involve ice

A

Cryology/ Glaciology

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3
Q

small glaciers that form valleys

A

Valley Glacier

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4
Q

Enormous glaciers that can cover continents

A

Ice Sheets

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5
Q

are large flat masses of floating ice that extend seaward from the coast

A

Ice Shelves

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6
Q

mass of glacial ice covering a high upland or plateau

A

Ice Caps

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7
Q

a tongue of ice normally flowing rapidly outward from an ice cap or ice sheet

A

Outlet Glaciers

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8
Q

forms when one or more valley glaciers emerge from the confining walls of mountain valleys

A

Piedmont Glaciers

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9
Q

a granular type of ice

A

Firn

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10
Q

a process when slope is present glaciers may slide over their underlying surface

A

Basal Slip

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11
Q

a type of deformation that takes place in response to stress

A

Plastic Flow

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12
Q

zone where ice melts

A

Zone of Wastage

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13
Q

elevation above which snow remains throughout the year

A

Snowline

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14
Q

process by which pieces of bedrocks are lifted out of place by a glacier

A

Plucking

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15
Q

the grinding and scrapping of a rock surface by the friction and impact of rock particles carried by water, wind or ice

A

Abrasion

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16
Q

scratches and grooves of bedrocks caysed by glacial abrasion

A

Glacial striation

17
Q

a mountain valley that has been widened, deepened and straightened by a glacier

A

U-Shaped Glacial trough

18
Q

a tributary valley that enters a glacial trough at considerable height above the floor of trough

A

Hanging Valleys

19
Q

a chain of small lakes in a glacial trough that occupy the basins created by glacial erosion

A

Pater Noster lake

20
Q

a circular hollow cut into bedrock during glaciation. Side and back wall are steep but front walls open downward

A

Cirque

21
Q

a small lake in a cirque

A

tarn

22
Q

are deep, steep sided inlets of the sea that are present at high latitudes where mountains are adjacent to the ocean

A

Fjord

23
Q

a sharp-crested serrate ridge separating the heads of opposing valleys that formerly were occupied by Alpine glaciers

A

Aretes

24
Q

results when glaciers erode three or more aretes, usually forming a sharp-edged peak

A

Horns

25
Q

an asymmetrical knob of bedrock formed when glacial abrasion smoothen the gentle slope acing the advancing ice sheets and plucking steepeneds the opposite side as the ice overrides the knob

A

Roche Moutonnees

26
Q

deposited as glacial ice melts and drop its load or rock fragments

A

Till

27
Q

not deposited directly by glaciers, rather they reflect the sorting action of glacial melt water

A

Stratified Drift

28
Q

an ice transported boulder that was not derived from the bedrock near its present side

A

Glacial Erratics

29
Q

a ridge of till along the sides of a valley glacier composed primarily of debris that fell to the glacier from the valley walls

A

Lateral Moraine

30
Q

a ridge of till formed along when lateral moraines from two coalescing valley glaciers join

A

Medial Moraine

31
Q

a ridge of till marking the former position of the front of the glacier

A

End Moraine

32
Q

an undulating layer of till deposited as the ice front retreats

A

Ground Moraine

33
Q

a relatively flat, gently sloping plain consisting of materials deposited by melt water streams in front og the margin of an ice sheets

A

Outwash Plain

34
Q

a relatively narrow body of stratified drift deposit on a valley floor by melt water streams that issue from the terminus of a valley glacier

A

Valley Train

35
Q

depression created when blocks of ice becomes lodged in glacial deposits and subsequently melt

A

Kettles

36
Q

a streamlined asymmetrical hill composed of glacial till

A

Drumlins

37
Q

sinuous ridge composed largely of sand, gravel deposited by a stream flowing in a tunnel beneath a glacier near its terminus

A

Eskers

38
Q

a steep sided hill composed of sand and gravel, originating when sediments collected in openings in stagnant glacial ice

A

Kames

Correlation 1 (17 decks)

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