Ch. 4 Volcanism and Extrusive Ignous Rocks
... by volcanism – Lava flows and ash weather to produce fertile soils – Violent eruptions can destroy nearly all life in their paths – Large amounts of ash and volcanic gases in atmosphere can trigger rapid climate changes and contribute to mass extinctions ...
... by volcanism – Lava flows and ash weather to produce fertile soils – Violent eruptions can destroy nearly all life in their paths – Large amounts of ash and volcanic gases in atmosphere can trigger rapid climate changes and contribute to mass extinctions ...
Volcano Webquest
... What happens to the finest ash particles that get ejected from the volcano during an eruption? ...
... What happens to the finest ash particles that get ejected from the volcano during an eruption? ...
Document
... Match each volcano type listed on the right with the correct description listed on the left. Write the letter in the space provided. You may use the volcanoes listed on the right more than once. ...
... Match each volcano type listed on the right with the correct description listed on the left. Write the letter in the space provided. You may use the volcanoes listed on the right more than once. ...
Case Study: Extrusive Landforms and their impact on the
... subduction of an offshore oceanic plate beneath the continental crust. Here the Juan de Fuca plate is being subducted under the North American Plate. As the Juan de Fuca plate descends it begins to melt due to heat and pressure produced by friction at the subduction zone. This melting of the plate p ...
... subduction of an offshore oceanic plate beneath the continental crust. Here the Juan de Fuca plate is being subducted under the North American Plate. As the Juan de Fuca plate descends it begins to melt due to heat and pressure produced by friction at the subduction zone. This melting of the plate p ...
Slide 1
... a) Is a landform made of magma that hardened in a volcanoes pipe and later was exposed by erosion b) Weathering and erosion work constantly to wear away the volcanoes c) When a volcanoes activity ends, magma remaining in the pipe hardens to form igneous rock ...
... a) Is a landform made of magma that hardened in a volcanoes pipe and later was exposed by erosion b) Weathering and erosion work constantly to wear away the volcanoes c) When a volcanoes activity ends, magma remaining in the pipe hardens to form igneous rock ...
Volcanoes I - Faculty Washington
... Basalts, Lahar, Pyroclastics, Lava. Distinguish between the volcanism found over hot spots, subduction zones, and spreading centers in terms of their rock composition, volcano type, magma viscosity, and danger. List and discuss at least three of the hazards associated with volcanoes. Relate th ...
... Basalts, Lahar, Pyroclastics, Lava. Distinguish between the volcanism found over hot spots, subduction zones, and spreading centers in terms of their rock composition, volcano type, magma viscosity, and danger. List and discuss at least three of the hazards associated with volcanoes. Relate th ...
chapter_7_volcanoes
... surface. However, very fluid lava may reach the surface and harden into a horizontal layer. Videos Volcano 101 Geological Journey (start at about 28:00 mark) ...
... surface. However, very fluid lava may reach the surface and harden into a horizontal layer. Videos Volcano 101 Geological Journey (start at about 28:00 mark) ...
Chapter 6 Volcanoes
... ash and gases spread around globe block sunlight enough to cause surface temp. drops ...
... ash and gases spread around globe block sunlight enough to cause surface temp. drops ...
Questions For Review KEY
... A shield volcano is broad, flat, and gently sloping. The shield volcano is built of very fluid (typically basaltic) lava. A volcanic dome is more compact and steep-sided dome. The volcanic dome is made of more viscous, silica-rich magmas, andesitic to rhyolitic in composition. ...
... A shield volcano is broad, flat, and gently sloping. The shield volcano is built of very fluid (typically basaltic) lava. A volcanic dome is more compact and steep-sided dome. The volcanic dome is made of more viscous, silica-rich magmas, andesitic to rhyolitic in composition. ...
Volcanic hazards in Dante`s Peak
... Dead trees and animals from high levels of carbon dioxide Dormant vs. extinct vs. active volcanoes Evacuation issues (Mt. Pinatubo in the Philippines is a good example) Vesuvius and Pompei Eruption prediction Tiltmeter — measures changes in size and shape of volcanoes (remember the bulge that formed ...
... Dead trees and animals from high levels of carbon dioxide Dormant vs. extinct vs. active volcanoes Evacuation issues (Mt. Pinatubo in the Philippines is a good example) Vesuvius and Pompei Eruption prediction Tiltmeter — measures changes in size and shape of volcanoes (remember the bulge that formed ...
Impact of Volcanoes
... Other Natural Disasters from Volcanoes If a volcano erupts under the ocean, it can cause a tsunami—not only from its blast, but from the earthquake it creates. Lava and ____________________ flows can set fire to homes, cars, or anything else that is combustible. A ___________ can spit out debris tha ...
... Other Natural Disasters from Volcanoes If a volcano erupts under the ocean, it can cause a tsunami—not only from its blast, but from the earthquake it creates. Lava and ____________________ flows can set fire to homes, cars, or anything else that is combustible. A ___________ can spit out debris tha ...
No Slide Title
... – Fine-grained (smaller than 1 mm) – Glassy- Obsidian – Due to • rapid cooling (mainly) • high viscosity ...
... – Fine-grained (smaller than 1 mm) – Glassy- Obsidian – Due to • rapid cooling (mainly) • high viscosity ...
Vulkanhaus Strohn - European Geoparks Network
... The museum is dedicated to the volcanism of the Eifel Mountains. The permanent exhibition shows mechanisms how volcanism works, or, for example, how the planet earth is composed, from where magma emendates, and which reasons causes the glowing hot liquids ascending into the earth crust. Based on gam ...
... The museum is dedicated to the volcanism of the Eifel Mountains. The permanent exhibition shows mechanisms how volcanism works, or, for example, how the planet earth is composed, from where magma emendates, and which reasons causes the glowing hot liquids ascending into the earth crust. Based on gam ...
Volcanoes - sabresocials.com
... Volcanic Landforms Key concepts: Volcanic landforms vary with - tectonic setting, - composition of magma -------- conditions during eruption, - volume of eruption. ...
... Volcanic Landforms Key concepts: Volcanic landforms vary with - tectonic setting, - composition of magma -------- conditions during eruption, - volume of eruption. ...
Volcanic Misconceptions State whether each statement is true or false
... 1.All igneous rocks are of volcanic origin. 2.Earthquakes associated with volcanoes are from tectonic movement. 3.All intrusive igneous rocks are exposed because of weathering/erosion. 4.Granite is a common rock in the Hawaiian islands. 5.One would expect to find piles of pumice in and around mafic ...
... 1.All igneous rocks are of volcanic origin. 2.Earthquakes associated with volcanoes are from tectonic movement. 3.All intrusive igneous rocks are exposed because of weathering/erosion. 4.Granite is a common rock in the Hawaiian islands. 5.One would expect to find piles of pumice in and around mafic ...
Itcha Range
The Itcha Range is a small isolated mountain range in the West-Central Interior of British Columbia, Canada. It is located 40 km (25 mi) northeast of Anahim Lake on the Chilcotin Plateau. With a maximum elevation of 2,375 m (7,792 ft), it is the lowest of three mountain ranges extending east from the Coast Mountains. Two mountains are named in the Itcha Range; Mount Downton and Itcha Mountain. A large provincial park surrounds the Itcha Range and other features in its vicinity. More than 15 animal species are known to exist in the Itcha Range area, as well as a grassland community that is limited only to this location of British Columbia. The Itcha Range resides in the territory of aboriginal peoples who have occupied this region for centuries. This area has a relatively dry environment compared to the Coast Mountains in the west.In contrast to most mountain ranges in British Columbia, the Itcha Range represents an inactive shield volcano. This highly dissected volcanic edifice consists of a variety of rock types, including basanite, hawaiite, trachyte, rhyolite, phonolite and alkali olivine basalt. They were deposited by different types of volcanic eruptions characterized by passive lava flows and explosivity. Two stages of eruptive activity have been identified at the volcano along with three sub-phases that are limited only to the first stage of development. The main body of the Itcha Range is between 3.8 and 3.0 million years old and thus over two million years ago it passed the most active shield stage of life. A long period of dormancy lasting for almost a million years followed, which was interrupted by the post-shield stage of volcanism 2.2 to 0.8 million years ago. More recent volcanic activity in and around the Itcha Range might have occurred in the last 340,000 years to produce cinder cones.The Itcha Range is part of an east-west trending volcanic zone called the Anahim Volcanic Belt. This consists of large shield volcanoes, small cinder cones, lava domes and lava flows that become progressively younger from west to east. Several explanations have been made regarding the creation of this feature, each citing a different geologic process. If volcanic activity were to resume at the Itcha Range, Canada's Interagency Volcanic Event Notification Plan (IVENP) is prepared to notify people threatened by eruptions.