Geologic landforms Flashcards

1
Q

This volcano is highly viscous and highly explosive

A

Stratovolcano

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2
Q

Low viscosity, runny lava, and spreads away from the source

A

Shield volcano

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3
Q

Also called scoria cones, steep with straight or gently concave sides

A

Cinder

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4
Q

Mixed landform and associated with lava flows and pyroclastic rocks

A

Complex volcano

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5
Q

volcanic caldera that has been partially filled by a new central cone

A

Somma Volcano

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6
Q

Deep sea hydrothermal vents volcanic activities release dark colored smoke

A

black smokers

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7
Q

roughly circular holes where volcanic origin is postulated and no igneous rock can be found and may have been formed from igneous eruptions

A

Cryptovolcano

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8
Q

What is the first modern theory of landscape evolution?

A

Geographical Cycle

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9
Q

Who expounded the geographical cycle?

A

William Morris Davis

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10
Q

branch of geomorphology studies the form of the land surface

A

geomorphometry

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11
Q

processes driven by geologic forces

A

endogenic processes

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12
Q

processes driven by climatic forces

A

exogenic processes

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13
Q

rapid flow of soil and regolith containing large amount of water

A

debris flow

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14
Q

permanently frozen ground

A

permafrost

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15
Q

slow sliding of saturated soil and regolith that can involve permafrost beneath sliding layer

A

solifluction

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16
Q

known as explosion craters and are shallow craters caused by volcanic eruptions

A

Maar

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17
Q

looks like coiled rope

A

pahoehoe lava

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18
Q

spheroidal shaped solidified lava formed when underwater when magma rapidly cooled made contact with salt water

A

Pillow lava

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19
Q

large quantity of molten lava in a crater, vent, or other depression in the ground

A

Lava lake

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20
Q

Also called stream valves

A

Fumaroles

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21
Q

volcanic vents which emit volalite gases at high temperatures in powerful jets

A

fumaroles

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22
Q

what are the gases emitted by fumaroles

A

sulfuric dioxide, hydrochloric acid, and ammonium

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23
Q

valley glaciers leave mountains and spread on to a flat land as large lobes of spreading ice

A

piedmont

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24
Q

glacial ice covering high uplands areas

A

ice caps

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25
u shaped feature created during glaciation when narrow valleys undergo a transformation as the glacier widens and deepens them
glacial trough
26
large valley glacier systems consists of cirques that feed ice into a large trunk glacier
hanging valley
27
focal point of the glacier's growth because it is the area of the snow accumulation
cirque
28
crest of rock left after two adjacent glaciers have worn a steep ridge into the rock
arete
29
subparallel normal faults dipping towards each other blocks are bounded up
horst
30
accumulations of dirt and rockes that have fallen onto the glacier surface or have been pushed along by the glacier as it moves
moraine
31
present at high latitudes where the ocean is adjacent to the mountains
fjord
32
present at high latitudes where the ocean is adjacent to the mountains
fjord
33
rock outcrops that have been partially covered by ice caps due to topography
nunataks
34
form by the erosion of gently sloping beds
cuestas
35
rises some 1500 feet or more above its surroundings and has at least one steep side
plateau
36
rises some 1500 feet or more above its surroundings and has at least one steep side
37
forms from erosion attacks to form either a more or less straight front created by parallel retreat, or an irregular front with erosion scarps resulting from spring erosion or concentration of surface runoff
mesa
38
flat topped, steep sided towers of rock
butte
39
form due to the dissolution of carbonate rocks
cave
40
large flat plain of karst territory
polje
41
etched pitted grooved rugged surface formed from weathered limestone
lapies
42
separated from each other by swamps or alluvial plains
tower karst
43
terrain is approx equally shared by conical dolines and conical residual hills
cone karst
44
surface drainage patter first develops on a non soluble rock and later erodes into soluble rock when subsurface drainage totally defeats the surface flow
karst valley
45
closed cone or bowl shaped hollows and small or moderate depressions that forms from carbonate rocks
doline
46
large scale doline
uvalas
47
large isolated bodies of water forms due to water filling large depressions
lake
48
deposition bar or beach landform off coasts or lake shores
spit
49
bar that extends outward from the shore connecting an island
tombolo
50
extends outwards from the shoreline in a triangular shape that forms through accretion and progradation of sand and shingle
cuspate foreland
51
coastal wetlands that form when mud is deposited by tides or rivers
mudflat
52
forms from action of waves to unconsolidated sediments
rippies
53
deformed beds that rolled into small anticlines and sharp synclines formed due to the disturbance of paleocurrents
convulated beds
54
temporary islands in a braided river
braid bars
55
other term for braid bars
eyots
56
fluvial system consisting of a river, lagoon, and barriers
estuary
57
develops when channel leeve breaks and causes an overbank flooding
crevasse splay
58
stream channels with flat floors and steep walls of sediment usually found in deserts and other arid climates due to water less conditions
arroyo
59
circular holes that were caused by erosion due to the downward circular motion of eroding particles
potholes
60
circular holes that were caused by erosion due to the downward circular motion of eroding particles
potholes
61
sand seas or areas where there is high accumulation of sand
ergs
62
wind blown silts of different compositions
loess
63
areas where deep erosion of poorly consolidated rocks creates a landscape of steep slopes sparse vegetation and intricate stream networks
badlands
64
crescentic concave ridges created by the transportation and deposition of sediment with the slip face transverse to the wind
transverse dune
65
isolated long scoop shaped hollows or parabolas of sand with ends following the wind direction that forms due to sand blowouts and subsequent deposition
barchan dune
66
form in coastal areas where partial cover of vegetation a strong onshore wind and opposite of barchan
parabolic dune
67
form in coastal areas where partial cover of vegetation a strong onshore wind and opposite of barchan
parabolic dune
68
dunes with varying directions of ends that form from highly variable with direction
star dune
69
deflations where the topsoil or sand has been carried away by the wind
blowouts
70
intricately pitted rock surfaces that have often been attributed to wind abrasion
honeycomb structures
71
alcoves and niches in rock walls that may have been resulted from wind abrasion, where they are at the base of a cliff
wind caves
72
short flat topped sand ridges which extend parallel to the prevailing winds but lack the collapsing fonts
undulations
73
isolated rock islands formed due to its highly resistant nature
inselberg
74
streamlined wind sculped landform carved in soft rock by persistent winds in flat deserts parallel to prevailing winds
yardang
75
residual masses of weak rock capped with harder rock primarily formed by the wind action
pedestal rock
76
irregular shaped rock formation that is tall and pillar like
hoodoo
77
rocks that exhibit one or polished and faceted surfaces but these are rare because strong winds abundance of sand and absence of vegetation are essential to their best development
ventifact
78
german term for debris avalanche
sturzstrom
79
angle of reach or shadow angle
fahrboschung