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Study sets matching "volcanism"

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Study sets matching "volcanism"

17 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…
20 terms
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…
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
20 terms
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…
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…
15 terms
Volcanism
What are the different types of volcan…
What are the types of eruptions?
What type of volcanoes are found in Ha…
What are the characteristics of a shie…
-Shield volcanoes... -Stratovolcanoes... -Supervolcanoes... -Cinder co…
-Hawaiian... -Icelandic... -Stromboli ... -Plinian... -Supervolcano
Shield volcanoes
-Flat (like a shield)... -Gentle slopes... -Runny, low viscous lava…
What are the different types of volcan…
-Shield volcanoes... -Stratovolcanoes... -Supervolcanoes... -Cinder co…
What are the types of eruptions?
-Hawaiian... -Icelandic... -Stromboli ... -Plinian... -Supervolcano
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
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
Pahoehoe Lava
Aa Lava
Pillow
Volcanic Ash
Balstic lava, low viscosity, slow cool with a rope like appea…
balstic, high viscosity, solidifies while flowing causing ang…
Ocean floor, underwater, lava. cools/ contracts and causes sp…
rock, mineral and volcanic glass
Pahoehoe Lava
Balstic lava, low viscosity, slow cool with a rope like appea…
Aa Lava
balstic, high viscosity, solidifies while flowing causing ang…
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
24 terms
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
49 terms
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
18 terms
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…
44 terms
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
9 terms
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
46 terms
Volcanism
Volcanism
Volcano
Causes of higher internal temperatures…
Causes of higher internal temperatures…
- Is the most compelling and visible igneous process... - Serves…
- A site at which material (solid, liquid, or gaseous) reache…
The heat generated by accretion of planetesimals (Gravitation…
The heat generated by heat-producing impacts
Volcanism
- Is the most compelling and visible igneous process... - Serves…
Volcano
- A site at which material (solid, liquid, or gaseous) reache…
20 terms
Volcanism
Cinder Cone
Crater
Fissure
Hot Spot
Is a steep-sided volcano formed by the deposits of solid frag…
Is a funnel shaped pit at the top of a volcano cone.
Is a crack in the rock surface through which lava flows
Is an area of volcanism within a lithospheric plate.
Cinder Cone
Is a steep-sided volcano formed by the deposits of solid frag…
Crater
Is a funnel shaped pit at the top of a volcano cone.
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
8 terms
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
29 terms
Volcanism
Zones of Subduction
Silica (SiO2) Content
Island Arc and Continental Arc Volcanoes
Water Vapor
The most violent volcanic activity/Composite and Stratovolcan…
The viscosity of a magma is largely determined by its?
Andesitic magmas erupt to form?
The major gas released during volcanic eruptions
Zones of Subduction
The most violent volcanic activity/Composite and Stratovolcan…
Silica (SiO2) Content
The viscosity of a magma is largely determined by its?
Volcanism
Magma
Parasitic Cone
Sill
Vent
Molten rock beneath Earth's surface
A small cone-shaped volcano formed by an accumulation of volc…
A flat piece of rock formed when magma hardens in a crack in…
An opening in Earth's surface through which volcanic material…
Magma
Molten rock beneath Earth's surface
Parasitic Cone
A small cone-shaped volcano formed by an accumulation of volc…
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…
43 terms
VOLCANISM
The process by which magma and gases a…
Two types of volcanism
When magma flows out onto the Earth's…
A landform with a event, or fissure (c…
Volcanism
Extrusive and intrusive
Extrusive volcanic activity
Volcano
The process by which magma and gases a…
Volcanism
Two types of volcanism
Extrusive and intrusive
39 terms
Volcanism
Volcanism
Volcanism
Magma Composition
Silica, Dissolved Gases
The extrusion of lava (and the gases it... contains) and the ej…
•The process of formation of volcanoes and... extrusive igneous…
Affects flow and explosivity
Magma is composed of:
Volcanism
The extrusion of lava (and the gases it... contains) and the ej…
Volcanism
•The process of formation of volcanoes and... extrusive igneous…
14 terms
Volcanism
Magma
What does magma do when it escapes tow…
Lava
When magma releases its gases and pres…
An underground mix of molten, rock, mineral crystals, and dis…
Erupts and undergoes important changes
Liquid rock on earth's surface without dissolved gases
Magma
Magma
An underground mix of molten, rock, mineral crystals, and dis…
What does magma do when it escapes tow…
Erupts and undergoes important changes
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…
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…
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
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…
60 terms
Volcanism
batholith
Dike; when other rock is eroded around…
Laccolith
Sill
magma chamber for an active volcano
igneous intrusion which cuts across sedimentary strata (layer…
mushroom shaped igneous intrusion
igneous intrusion which pushes in between sedimentary strata;…
batholith
magma chamber for an active volcano
Dike; when other rock is eroded around…
igneous intrusion which cuts across sedimentary strata (layer…
14 terms
Volcanism
Explosive Volcanoes
Effusive Volcanoes
Hot Spot
Mantle Plumes
High ash clouds
Erupt gentle lava
volcanoes where a plate boundary is not present
Hot, less dense mantle material (it is less dense because it…
Explosive Volcanoes
High ash clouds
Effusive Volcanoes
Erupt gentle lava
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
53 terms
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…
54 terms
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…
31 terms
volcanism
hot spot
lava
magma
oceanic plates
when magma is driven by particularly strong convection curren…
hot molten material erupted from a volcano
molten material in the earths mantle
basalt; Pacific, Nazcar, Scottia
hot spot
when magma is driven by particularly strong convection curren…
lava
hot molten material erupted from a volcano
Volcanism
Volcanism
Volcanoes
volcanic features
Vents
Geologic processes that result in the explosion of magma at t…
hill or mountain formed by the extrusion of lava or ejection…
vents, pipes, cones, magma chamber, crater
opening in the Earth's surface through which an eruption take…
Volcanism
Geologic processes that result in the explosion of magma at t…
Volcanoes
hill or mountain formed by the extrusion of lava or ejection…
27 terms
Volcanism
Volcano
Magma
Lava
Pyroclastic Debris
a conical hill or mountain built around a vent that connects…
molten rocks below surface of the Earth;contains crystals, fr…
magma that reaches Earth's surface
blown rock fragments; derived from three sources: magma that…
Volcano
a conical hill or mountain built around a vent that connects…
Magma
molten rocks below surface of the Earth;contains crystals, fr…
Volcanism
lahar
distant
signal
dormancy
Lahar
entfernt
erkennen lassen, anzeigen, signalisieren
Untätigkeit
lahar
Lahar
distant
entfernt
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