Study sets matching "volcanism"

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Study sets matching "volcanism"

Volcanism
Convergent
Volcanism
Hot Spot
Flood Basalt
Tending to move toward one point or to approach each other
Describes all the processes associated with the discharge of…
Unusually hot area in Earth's mantle where high-temperature p…
Huge amounts of lava that erupt from fissures
Convergent
Tending to move toward one point or to approach each other
Volcanism
Describes all the processes associated with the discharge of…
Volcanism
Hephaestus: Greek Mythology
Vulcan: Roman Mythology
Lugh: Irish Mythology
Agni: Indian Mythology
heated his forge when angry
equivalent of Hephaestus
god of fire
god of fire that communicates with other gods through smoke a…
Hephaestus: Greek Mythology
heated his forge when angry
Vulcan: Roman Mythology
equivalent of Hephaestus
Volcanism
Volcanism
Hot spot
Flood basalt
Fissures
Describes all the process associated with the discharge of ma…
Unusually hot area in earths mantle where high temperature pl…
Huge amounts of lava that erupt from fissures
Long cracks in the earth
Volcanism
Describes all the process associated with the discharge of ma…
Hot spot
Unusually hot area in earths mantle where high temperature pl…
7 terms
Volcanism
geysers
hot springs
faults
oceanic vents
springs that shoot hot water and steam into the air
formed when magma heats groundwater and the water rises and c…
Breaks in Earth's crust where rocks have slipped past each ot…
Vents heated by the mantle, it is belived that the first sign…
geysers
springs that shoot hot water and steam into the air
hot springs
formed when magma heats groundwater and the water rises and c…
Volcanism
volcanism
hot spot
fissure
conduit
Any activity that includes the movement of magma toward or on…
An area where magma from deep within the mantle melts through…
crevice; crack
The tube from which lava moves and flows within a volcano
volcanism
Any activity that includes the movement of magma toward or on…
hot spot
An area where magma from deep within the mantle melts through…
34 terms
Volcanism
Magma
Lava
Viscosity
Conditions for an explosive eruption
molten rock found underneath the Earth's surface and rises th…
molten rock erupted from
measure of a liquid's resistance to flow
high viscosity, cooler lava, high gas, high silica content
Magma
molten rock found underneath the Earth's surface and rises th…
Lava
molten rock erupted from
38 terms
Volcanism
shield volcano
composite cone
cinder cone
magma
a wide, gently sloping mountain made of layers of lava and fo…
A volcano composed of both lava flows and pyroclastic material
A steep, cone-shaped hill or small mountain made of volcanic…
Molten rock beneath the earth's surface
shield volcano
a wide, gently sloping mountain made of layers of lava and fo…
composite cone
A volcano composed of both lava flows and pyroclastic material
16 terms
Volcanism
Volcanism
Hot Spot
Tephra
Vent
All the processes associated with the discharge of magma, hot…
Unusually hot regions of Earth's mantle where high-temperatur…
Pieces of solidified lava and pieces of crust ejected from a…
Opening in earth's surface that lava comes through
Volcanism
All the processes associated with the discharge of magma, hot…
Hot Spot
Unusually hot regions of Earth's mantle where high-temperatur…
29 terms
Volcanism
Effusive
Effusive
Effusive
Explosive
Eruption that has Basalt-low viscosity... Low water content in m…
Oceanic intraplate hotspots... -ocean island basalt
Continental rifts... -Basalts and strange carbonate magmas
Andesites, dacites, or rhyolites- high viscosity... High magma c…
Effusive
Eruption that has Basalt-low viscosity... Low water content in m…
Effusive
Oceanic intraplate hotspots... -ocean island basalt
34 terms
Volcanism
Magma
Lava
Viscosity
Conditions for an explosive eruption
molten rock found underneath the Earth's surface and rises th…
molten rock erupted from
measure of a liquid's resistance to flow
high viscosity, cooler lava, high gas, high silica content
Magma
molten rock found underneath the Earth's surface and rises th…
Lava
molten rock erupted from
39 terms
Volcanism
Magmas
Three ways of making magmas
Where do the three ways of making magm…
Where are the volcanoes?
liquid (molten) rocks ... - when cool, make igneous rocks... - extr…
1) thermal melting... heat rocks until they melt... 2) decompressio…
Thermal melting- continental rifts, thermal melting of contin…
continental rifts... mid-ocean ridges- more than 80% of Earth's…
Magmas
liquid (molten) rocks ... - when cool, make igneous rocks... - extr…
Three ways of making magmas
1) thermal melting... heat rocks until they melt... 2) decompressio…
17 terms
Volcanism
What are the physical structures of a…
What are the 3 classifications of volc…
What are the 3 types of lava?
What other material is expelled during…
Composite, cinder cone, shield
Extinct, Dormant, Active
Pillow lava, Aa, Pahoehoe
Gases, tephra/pyroclastic materials
What are the physical structures of a…
Composite, cinder cone, shield
What are the 3 classifications of volc…
Extinct, Dormant, Active
10 terms
Volcanism
How does volcanism happen?
What layers subduct?
What layers do the denser layers move…
What will happen after the layers subd…
Subduction
The more dense layers; Oceanic crust and the Lithosphere
Continental Crust and the Lithosphere
It will move deep into the earth and it will become hot and b…
How does volcanism happen?
Subduction
What layers subduct?
The more dense layers; Oceanic crust and the Lithosphere
15 terms
Volcanism
volcanism
confining pressure and magma chemistry
high silica magma
pyroclastic materials
All phenomena connected to the origin and movement of molten…
The nature of eruptions are determined by these two things
-Also called felsic magma... -originates from granite and create…
solid matter thrown into the air by volcanic eruptions
volcanism
All phenomena connected to the origin and movement of molten…
confining pressure and magma chemistry
The nature of eruptions are determined by these two things
16 terms
Volcanism
Convergent
Volcanism
Hot Spot
Flood Basalt
Tending to move toward one point or to approach each other
Describes all the processes associated with the discharge of…
Unusually hot area in Earth's mantle where high-temperature p…
Huge amounts of lava that erupt from fissures
Convergent
Tending to move toward one point or to approach each other
Volcanism
Describes all the processes associated with the discharge of…
31 terms
Volcanism
Volcanism
Extrusive
Intrusive
Dike
Movement of magma from the interior of the Earth to or near t…
At surface
Subsurface
usually more or less vertical- flat, sheet-like magma body th…
Volcanism
Movement of magma from the interior of the Earth to or near t…
Extrusive
At surface
14 terms
VOLCANISM
Volcano
Vent
KINDS
Shield Volcanoes
-Mountain or hill formed around a vent in the earth's crust... -…
Forms when molten rock and gas from deep within the earth bla…
...
-built by many layers of runny lava flows... -formed when fluid…
Volcano
-Mountain or hill formed around a vent in the earth's crust... -…
Vent
Forms when molten rock and gas from deep within the earth bla…
41 terms
Volcanism
Plate tectonic settings where volcanis…
Low-Silica Lava
High-Silica Lava
Explosive Potential
Island arc, Continental arc, Rift, Hot spot, Mid-ocean ridge
Low viscosity, flows like cake batter - higher temperature
High viscosity, flows like toothpaste - lower temperature
The more dissolved gas there is in the lava, the higher the e…
Plate tectonic settings where volcanis…
Island arc, Continental arc, Rift, Hot spot, Mid-ocean ridge
Low-Silica Lava
Low viscosity, flows like cake batter - higher temperature
26 terms
Volcanism
Why is it important to understand how…
Magma
Lava
Pyroclastic debris
To understand/predict volcanic hazards, To understand nature…
molten rock
magma that reaches the earth's surface
lava and rock fragments ejected in a volcanic eruption
Why is it important to understand how…
To understand/predict volcanic hazards, To understand nature…
Magma
molten rock
Volcanism
Mafic
felsic
pyroclastics/tephra
Effusive
less silica flows easily, and eruption is less vicious.
lots of silica. flows slowly, trapping gas. makes for a viole…
solid fragments of magma formed by felsic magma
gentle eruptions from magic magma. if its through a vent, it…
Mafic
less silica flows easily, and eruption is less vicious.
felsic
lots of silica. flows slowly, trapping gas. makes for a viole…
29 terms
Volcanism
Extrusive volcanic activity
Volcano
crater
active
magma flows out onto the earth's surface & forms igneous rock
In the Asthenopshere
surface depression at the summit of the volcano
currently erupting, has potential to erupt, or has erupted du…
Extrusive volcanic activity
magma flows out onto the earth's surface & forms igneous rock
Volcano
In the Asthenopshere
Volcanism
volcanism
Extrusive volcanic activity
Volcano
mountain landform
process by which magma and gases are transferred from Earth's…
when magma flows out onto Earth's surface and then cools to f…
landform with a vent, or fissure on surface which is the end…
if the exit point is a vent, then usually what is the result
volcanism
process by which magma and gases are transferred from Earth's…
Extrusive volcanic activity
when magma flows out onto Earth's surface and then cools to f…
41 terms
Volcanism
Volcanism
2 types of volcanism
Volcano
Crater
The process by which magma and gas are transferred from the E…
Extrusive ... Intrusive
Landform with a vent, or fissure (crack) that is the end of a…
The surface depression at the summit (top) of a volcano
Volcanism
The process by which magma and gas are transferred from the E…
2 types of volcanism
Extrusive ... Intrusive
volcanism
Volcano
Volcanism
Vent
Magma Chamber
Is a hill mountain or molten or hot rocks
refers to any phenomenon of eruption of molten lava onto the…
It is the Central opening to the Crater
When heated it rises up to the crater
Volcano
Is a hill mountain or molten or hot rocks
Volcanism
refers to any phenomenon of eruption of molten lava onto the…
19 terms
Volcanism
Hawaiian or Shield volcanos
Cinder cone
Stratovolcano
Lava Dome
Basaltic composition... Low viscosity... Massive plume with broad,…
Mafic basalt lava spills from base. Chunks of scoria. Central…
Alternating layers of pyroclastic material and lava flows... Cla…
Small rhyolite, crater with surrounding pyroclastic apron fro…
Hawaiian or Shield volcanos
Basaltic composition... Low viscosity... Massive plume with broad,…
Cinder cone
Mafic basalt lava spills from base. Chunks of scoria. Central…
Volcanism
magma chamber
intrusive igneous rock
extrusive igneous rock
lava
reservoir of molten rock beneath a volcano
formed when magma cools and crystallizes at depth; has large…
rapid cooling at surface produces microscopic crystals and a…
erupts on the surface of the Earth, under low pressure condit…
magma chamber
reservoir of molten rock beneath a volcano
intrusive igneous rock
formed when magma cools and crystallizes at depth; has large…
28 terms
Volcanism
Andestic
Ash
Basaltic
Crater
Intermediate gas content and viscosity, mixing of oceanic and…
remains of something destroyed, very harmful
Low gas content and viscosity, oceanic, divergent boundaries,…
Depression in the ground fed by magma chamber
Andestic
Intermediate gas content and viscosity, mixing of oceanic and…
Ash
remains of something destroyed, very harmful
7 terms
volcanism
geysers
hot spring
faults
oceanic vent
springs that shoot hot water and steam into the air
a pool formed by groundwater that has risen to the surface af…
Breaks in Earth's crust where rocks have slipped past each ot…
Vents heated by the mantle, it is belived that the first sign…
geysers
springs that shoot hot water and steam into the air
hot spring
a pool formed by groundwater that has risen to the surface af…
Volcanism
Volcano
Magma
Lava
Constructive Volcanoes
A weak spot or "chimney" in the earths crust where magma come…
A molten mixture of rock, gases, and water from the MANTLE
Magma that reaches the surface
Add new rock to existing land and form new islands
Volcano
A weak spot or "chimney" in the earths crust where magma come…
Magma
A molten mixture of rock, gases, and water from the MANTLE
24 terms
Volcanism
magma
lava
active
dormant
molten rock still within the earth
molten rock which has been exposed to surface air
has erupted in the past 10,000 years, shows some signs of act…
has not erupted in the past 10,000 years but does show signs…
magma
molten rock still within the earth
lava
molten rock which has been exposed to surface air
20 terms
Volcanism
What is volcanism
Products of volcanism
Pyroclastic Material
Volcanic Gases
-Process in which magma from the interior of the earth rises…
Lava- Magma that has reached the surface, generally flows…
Vary in size from dust to pieces that can weigh several tonne…
-Composed of around 70% water vapour... -15% Carbon Dioxide ... -…
What is volcanism
-Process in which magma from the interior of the earth rises…
Products of volcanism
Lava- Magma that has reached the surface, generally flows…
Volcanism
Volcanic Gases
Pahoehoe
Aa
Pillow Lava
Over half of the gases are water vapor... Some is sulfur
Smoothly wrinkled... Very fast
Jagged and angular... Viscous (slow)
Lava that erupts under water typically forms bulbous masses
Volcanic Gases
Over half of the gases are water vapor... Some is sulfur
Pahoehoe
Smoothly wrinkled... Very fast
23 terms
Volcanism
batholith
caldera
cinder cone
composite volcano
coarse-grained, irregularly shaped, igneous rock mass that co…
large crater, up to 100 km in diameter, that can form when th…
steep-sided, generally small volcano that is built by the acc…
generally cone-shaped with concave slopes; built by violent e…
batholith
coarse-grained, irregularly shaped, igneous rock mass that co…
caldera
large crater, up to 100 km in diameter, that can form when th…
10 terms
volcanism
magma
lava
magma chamber
conduit
molten rock BENEATH the surface of the earth
moldten rock ON the earths surface
where magma is located inside the earths crust
lava reaches surface through this tubelike opening
magma
molten rock BENEATH the surface of the earth
lava
moldten rock ON the earths surface
17 terms
Volcanism
Viscosity
Low-viscosity
High-viscosity
Low-Silica Lava
describes a liquid's resistance to flow:
lavas are RUNNY
lavas are STIFF
Low viscosity... Flow like cake batter
Viscosity
describes a liquid's resistance to flow:
Low-viscosity
lavas are RUNNY
33 terms
Volcanism
Plate Tectonics where Volcanism occurs
Viscosity of Magma/Lava
Three main kinds of lava
Basalt
Island Arc. Continental Arc. Rift. Hot Spot. Mid Ocean Ridge
Low viscosity lava is RUNNY... High Viscosity lava is STIFF... The…
Basalt, Andesite, and Rhyolite
Gases can easily escape low viscosity magmas like basalts... Bec…
Plate Tectonics where Volcanism occurs
Island Arc. Continental Arc. Rift. Hot Spot. Mid Ocean Ridge
Viscosity of Magma/Lava
Low viscosity lava is RUNNY... High Viscosity lava is STIFF... The…
36 terms
Volcanism
endogenic
exogenic
tectonic setting
subduction zone volcanism
✨ land forming events that occur associated with energy comin…
✨ land-forming events that occur over sustained periods of ti…
subduction zone volcanism, intra plate volcanism, spreading c…
island arc volcanism, continental arc volcanism
endogenic
✨ land forming events that occur associated with energy comin…
exogenic
✨ land-forming events that occur over sustained periods of ti…
Volcanism
Endogenic
Volcanism, diastrophism, faulting
Exogenic
Subduction zone volcanism
Land-forming events that occur associated with energy coming…
Examples of endogenic land-forming events
Land-forming events that occur over sustained periods of time…
Tectonics' role in volcanism... -island arc volcanism... -continent…
Endogenic
Land-forming events that occur associated with energy coming…
Volcanism, diastrophism, faulting
Examples of endogenic land-forming events
VOLCANISM
endogenic
volcanism/plutonism... diastrophism... fault…
diastrophism
faulting
land-forming from the earths interior... episodic manner with p…
examples of endogenic processes
orogenesis (bent)... folding (folded)
marks a separation (endogenic process)
endogenic
land-forming from the earths interior... episodic manner with p…
volcanism/plutonism... diastrophism... fault…
examples of endogenic processes
40 terms
Volcanism
Endogenic
Topography
Exogenic
Volcanus
⁃ Land forming events that occur associated with energy comin…
1. Volcanism... 2. Diastrophism (Orogenesis & Folding)... 3. Faulting
⁃ Land forming events that occur over sustained periods of ti…
Latin word which means "burning mountain"
Endogenic
⁃ Land forming events that occur associated with energy comin…
Topography
1. Volcanism... 2. Diastrophism (Orogenesis & Folding)... 3. Faulting
31 terms
Volcanism
Endogenic
Exogenic
Volcanus
Vulcan
Land-forming events that occur associated with energy coming…
Land-forming events that occur over sustained periods of time…
burning mountain
Italian god whose mighty forge is in Mt. Etna
Endogenic
Land-forming events that occur associated with energy coming…
Exogenic
Land-forming events that occur over sustained periods of time…
28 terms
volcanism
Why do volcanoes erupt
factors effecting viscosity
extruded materials
lava flows
partial melting of rock to depths of 60 miles... change in densi…
temperature ... composition ... disolved gasses ... (this all effects…
lava gas pyroclastics
90% mafic (predominately basaltic) (high fluidity) ... 1% felsic…
Why do volcanoes erupt
partial melting of rock to depths of 60 miles... change in densi…
factors effecting viscosity
temperature ... composition ... disolved gasses ... (this all effects…
20 terms
Volcanism
Caldera
Cinder cone
Composite volcano
Conduit
Large crater, up to 50 km in diameter, that can form when the…
Steep-sided, generally small volcano that is built by the acc…
Generally come shaped with concave slopes; built by violent e…
A tubelike structure that allows lava to reach the surface
Caldera
Large crater, up to 50 km in diameter, that can form when the…
Cinder cone
Steep-sided, generally small volcano that is built by the acc…
Volcanism
Distribution of volcanic chains
Conduit
Volcanic neck
Dike (vertical) & Sill (horizontal):
Global distribution of igneous activity is not random! Most v…
connection of magma chamber to surface
volcanic fill of conduit
magma fill along fractures
Distribution of volcanic chains
Global distribution of igneous activity is not random! Most v…
Conduit
connection of magma chamber to surface
Volcanism
types
volcanism
volcano
3 states of volcanism
shield... cinder... stratovolcanos... lava domes... supervolcanos... basalt…
processes which lead to the extrusion of lava, gases & pyrocl…
vent in a planetary surface through which magma and associate…
active... dormant... extinct/inactive
types
shield... cinder... stratovolcanos... lava domes... supervolcanos... basalt…
volcanism
processes which lead to the extrusion of lava, gases & pyrocl…
Volcanism
magma
two types of magma
lava
volcano
molten rock underground found in abundance near rising convec…
-felsic: (feldspar and silica rich) produces light colored ro…
molten rock on the surface, felsic lava is called Aa; mafic l…
an opening in the Earth's crust that liquid rock comes out
magma
molten rock underground found in abundance near rising convec…
two types of magma
-felsic: (feldspar and silica rich) produces light colored ro…
Volcanism
Volcano
Shield
Composite strato
Cinder cone
Conical mass ot erupted lava/pyroclastic material
Flat, Hawaii
My st Helen, pointy
Small and short lived
Volcano
Conical mass ot erupted lava/pyroclastic material
Shield
Flat, Hawaii
49 terms
Volcanism
Hephaestus
Vulcan
Lugh
Agni
Greek Mythology... heated his forge when angry
Roman Mythology... equivalent of Hephaestus
Irish Mythology... God of fire
Indian Mythology... God of fire that communicates with other god…
Hephaestus
Greek Mythology... heated his forge when angry
Vulcan
Roman Mythology... equivalent of Hephaestus
Volcanism
Non-explosive eruptions
Explosive eruptions
Low viscosity
High viscosity
Low silica... Low gas content... Basaltic Lava flows
High silica... High gas content... Pyroclastic... Andesitic... Nuee ardente
Pahoehoe... Lava fountains... Skylight
...
Non-explosive eruptions
Low silica... Low gas content... Basaltic Lava flows
Explosive eruptions
High silica... High gas content... Pyroclastic... Andesitic... Nuee ardente
35 terms
Volcanism
Plate tectonic settings where volcanoe…
Relationship between magma/lava compos…
How gas, composition, and temp affect…
How properties of basalt, andesite, rh…
island arc, continental arc, rift, hot spot, mid ocean ridge
lower viscosity is runny, flows like cake batter... higher visco…
gas: more dissolved gas means higher explosive potential... comp…
Basalt, andesite, rhyolite- increasing silica content and vis…
Plate tectonic settings where volcanoe…
island arc, continental arc, rift, hot spot, mid ocean ridge
Relationship between magma/lava compos…
lower viscosity is runny, flows like cake batter... higher visco…
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