ppt - Atmospheric and Oceanic Sciences
... geological shift, then some of the gases bubble out and cause the magma to expand. • This can cause a runaway reaction. If the expansion results in further relief of pressure, for example, by blowing crust material off the top of the chamber, the result is a very large gas explosion. ...
... geological shift, then some of the gases bubble out and cause the magma to expand. • This can cause a runaway reaction. If the expansion results in further relief of pressure, for example, by blowing crust material off the top of the chamber, the result is a very large gas explosion. ...
3202 Unit 1-1 PlateTectonics
... melt. As the magma heats up it expands and moves upward through cracks to the surface. A mild eruption will have lava flows. Thick lava tends to solidify, forming a plug. When gases build up behind this a violent explosion may occur. Molten rock below the surface of the Earth is known as magma. Afte ...
... melt. As the magma heats up it expands and moves upward through cracks to the surface. A mild eruption will have lava flows. Thick lava tends to solidify, forming a plug. When gases build up behind this a violent explosion may occur. Molten rock below the surface of the Earth is known as magma. Afte ...
LECTURE 13 - Introduction to Volcanic Rocks 1
... size that are blasted into the air by explosions or carried upward by hot gases in eruption columns or lava fountains. Tephra includes large dense blocks and bombs, and small light rock debris such as scoria, pumice, reticulite, and ash. As tephra falls to the ground with increasing distance from a ...
... size that are blasted into the air by explosions or carried upward by hot gases in eruption columns or lava fountains. Tephra includes large dense blocks and bombs, and small light rock debris such as scoria, pumice, reticulite, and ash. As tephra falls to the ground with increasing distance from a ...
Chapter 3: The Geography of Volcanoes What is a volcano?
... How volcanic activity and its effects can be predicted - (continued) When magma begins to move it creates great heat, rocks begin to crack and break and this leads to vibrations of the Earth’s crust which can be a clear indication of a volcanic eruption being imminent Gases emitted from a volcan ...
... How volcanic activity and its effects can be predicted - (continued) When magma begins to move it creates great heat, rocks begin to crack and break and this leads to vibrations of the Earth’s crust which can be a clear indication of a volcanic eruption being imminent Gases emitted from a volcan ...
name period ____ date
... NAME ______________________________________ PERIOD ______ DATE _______________ INVESTIGATING THE EARTH’S CRUSTAL PLATES BY STUDYING EARTHQUAKES AND VOLCANOES. I. ...
... NAME ______________________________________ PERIOD ______ DATE _______________ INVESTIGATING THE EARTH’S CRUSTAL PLATES BY STUDYING EARTHQUAKES AND VOLCANOES. I. ...
Volcanoes and Earthquakes
... Volcanoes and Earthquakes By: Peter Malin Duke University As will be discussed at greater length in the next chapter, volcanoes also produce earthquakes. The primary reason is that the movement and eruption of magma and volcanic gases strain the crust surrounding the volcano, finally causing it to f ...
... Volcanoes and Earthquakes By: Peter Malin Duke University As will be discussed at greater length in the next chapter, volcanoes also produce earthquakes. The primary reason is that the movement and eruption of magma and volcanic gases strain the crust surrounding the volcano, finally causing it to f ...
Ch 13-Volcanoes
... – Lava cools rapidly, crust forms and lava continues to flow, it forms rock=pahoehoe – Crust deforms rapidly, forms wrinkles, surface breaks into jagged ...
... – Lava cools rapidly, crust forms and lava continues to flow, it forms rock=pahoehoe – Crust deforms rapidly, forms wrinkles, surface breaks into jagged ...
Diapositiva 1 - Russell-Moro
... • Three products from an explosive eruption – Ash fall: volcanic ash that has fallen through the air from an eruption cloud. A deposit so formed is usually well sorted and layered. – Pyroclastic flow: a hot, fast-moving and highdensity mixture of fine and coarse particles and gas formed during expl ...
... • Three products from an explosive eruption – Ash fall: volcanic ash that has fallen through the air from an eruption cloud. A deposit so formed is usually well sorted and layered. – Pyroclastic flow: a hot, fast-moving and highdensity mixture of fine and coarse particles and gas formed during expl ...
HW 2: Plate Tectonics
... (e.g. 50 Ma) refer to the ages of the oceanic crust at the designated locations given in millions of years; A through F are volcanic cones; some on land, others in the ocean. I- ...
... (e.g. 50 Ma) refer to the ages of the oceanic crust at the designated locations given in millions of years; A through F are volcanic cones; some on land, others in the ocean. I- ...
Level 4 Bardarbunga volcano The Bardarbunga volcano is in
... The higher parts of Iceland are covered by ice. The country has at least 20 active volcanoes. These have all erupted in the recent past. There is a lot of volcanic activity in Iceland. This explains why it is often called the “land of ice and fire”. As well as volcanoes, the country has hot springs, ...
... The higher parts of Iceland are covered by ice. The country has at least 20 active volcanoes. These have all erupted in the recent past. There is a lot of volcanic activity in Iceland. This explains why it is often called the “land of ice and fire”. As well as volcanoes, the country has hot springs, ...
Important Volcano Facts notes fill in
... At divergent boundaries under water, long deep cracks called ______ are formed. Magma flows through these cracks and is ______ by seawater. ...
... At divergent boundaries under water, long deep cracks called ______ are formed. Magma flows through these cracks and is ______ by seawater. ...
Study Guide: Volcano Test
... element- a substance that cannot be broken down into other substances compound- a substance made of two or more elements that have been chemically combined physical property- any characteristic of a substance that can be observed or measured without changing the composition of the substance (ex. den ...
... element- a substance that cannot be broken down into other substances compound- a substance made of two or more elements that have been chemically combined physical property- any characteristic of a substance that can be observed or measured without changing the composition of the substance (ex. den ...
DR 9.3a: Causes of Volcanic Eruptions
... b. oceanic crust moves away from continental crust. c. continental crust is subducted under oceanic crust. d. tectonic plates collide with each other. 19. As the ocean crust sinks deeper into the mantle, a. it increases in temperature. b. it forms a lava fountain. c. it forms a volcano. d. its press ...
... b. oceanic crust moves away from continental crust. c. continental crust is subducted under oceanic crust. d. tectonic plates collide with each other. 19. As the ocean crust sinks deeper into the mantle, a. it increases in temperature. b. it forms a lava fountain. c. it forms a volcano. d. its press ...
Notes on Rocks and Volcanoes
... b. examples: Ship Rock, NM; Devil’s Tower, WY; Kimberly diamond mines of South Africa 7.1 Volcanoes and Plate Tectonics 1.What happens when melted rock in the crust? -__________________, slowly pushes up due to being less dense than solid crust sometimes rising to the surface in the form of lava -th ...
... b. examples: Ship Rock, NM; Devil’s Tower, WY; Kimberly diamond mines of South Africa 7.1 Volcanoes and Plate Tectonics 1.What happens when melted rock in the crust? -__________________, slowly pushes up due to being less dense than solid crust sometimes rising to the surface in the form of lava -th ...
Plate Tectonics Unit:
... 1. Primary (P): The first to arrive (the fastest). They compress and expand like a Slinky. 2. Secondary (S): They come after primary waves. They move from side to side and up and down. S waves, unlike P waves, can not travel through liquids. 3. Surface waves: P or S waves that have reached the surfa ...
... 1. Primary (P): The first to arrive (the fastest). They compress and expand like a Slinky. 2. Secondary (S): They come after primary waves. They move from side to side and up and down. S waves, unlike P waves, can not travel through liquids. 3. Surface waves: P or S waves that have reached the surfa ...
Volcanic Landforms
... 3. What are the creative forces of volcanoes? But eruptions are also creative forces—they help form fertile farmland. They also create some of the largest mountains on Earth. ...
... 3. What are the creative forces of volcanoes? But eruptions are also creative forces—they help form fertile farmland. They also create some of the largest mountains on Earth. ...
Chapter 6
... What Erupts from a Volcano? • Lava is liquid magma that flows from a volcanic vent – Lava is released mostly from nonexplosive volcanoes – The viscosity of lava varies greatly. High viscosity is stiff and low viscosity is more fluid – Blocky lava and pahoehoe have a high viscosity and flow ...
... What Erupts from a Volcano? • Lava is liquid magma that flows from a volcanic vent – Lava is released mostly from nonexplosive volcanoes – The viscosity of lava varies greatly. High viscosity is stiff and low viscosity is more fluid – Blocky lava and pahoehoe have a high viscosity and flow ...
Geology * Part II - Hatboro
... movement of the ground 2. Laser-ranging Devices – uses a laser to measure horizontal movement 3. Tiltmeters – measures tilting or raising of the ground 4. Satellite Monitors – uses GPS from outer space to monitor changes in elevation as well as horizontal movement along a fault 5. Seismographs – col ...
... movement of the ground 2. Laser-ranging Devices – uses a laser to measure horizontal movement 3. Tiltmeters – measures tilting or raising of the ground 4. Satellite Monitors – uses GPS from outer space to monitor changes in elevation as well as horizontal movement along a fault 5. Seismographs – col ...
Yellowstone Park
... Plateau Volcanic Field was formed due to the plate tectonic movements over the past years ...
... Plateau Volcanic Field was formed due to the plate tectonic movements over the past years ...
Model Landforms
... Students should see that in normal faulting the layers are still parallel, but with uplift, the layers are now tilted.] 5. Closure - Finally, have students return to their maps from yesterday. Ask them, which mountains are not obviously associated with collision boundaries made by normal faulting ( ...
... Students should see that in normal faulting the layers are still parallel, but with uplift, the layers are now tilted.] 5. Closure - Finally, have students return to their maps from yesterday. Ask them, which mountains are not obviously associated with collision boundaries made by normal faulting ( ...
KEY
... The volcanic eruptions along the mid-oceanic spreading ridges are examples of a. cinder cones b. plateau of fissure-type basaltic eruptions c. composite cones d. shield cones ...
... The volcanic eruptions along the mid-oceanic spreading ridges are examples of a. cinder cones b. plateau of fissure-type basaltic eruptions c. composite cones d. shield cones ...
Earthquakes and Volcanoes
... Shield volcanoes are huge in size. They are built up by many layers of runny lava flows spilling out of a central vent or group of vents. The broad shaped, gently-sloping cone is formed from basaltic lava which can't be piled up into steep mounds. ...
... Shield volcanoes are huge in size. They are built up by many layers of runny lava flows spilling out of a central vent or group of vents. The broad shaped, gently-sloping cone is formed from basaltic lava which can't be piled up into steep mounds. ...
Ring of Fire
The Ring of Fire is an area in the basin of the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur. In a 40,000 km (25,000 mi) horseshoe shape, it is associated with a nearly continuous series of oceanic trenches, volcanic arcs, and volcanic belts and/or plate movements. It has 452 volcanoes and is home to over 75% of the world's active and dormant volcanoes. The Ring of Fire is sometimes called the circum-Pacific belt.About 90% of the world's earthquakes and 81% of the world's largest earthquakes occur along the Ring of Fire. The next most seismically active region (5–6% of earthquakes and 17% of the world's largest earthquakes) is the Alpide belt, which extends from Java to the northern Atlantic Ocean via the Himalayas and southern Europe.All but 3 of the world's 25 largest volcanic eruptions of the last 11,700 years occurred at volcanoes in the Ring of Fire.The Ring of Fire is a direct result of plate tectonics and the movement and collisions of lithospheric plates. The eastern section of the ring is the result of the Nazca Plate and the Cocos Plate being subducted beneath the westward moving South American Plate. The Cocos Plate is being subducted beneath the Caribbean Plate, in Central America. A portion of the Pacific Plate along with the small Juan de Fuca Plate are being subducted beneath the North American Plate. Along the northern portion, the northwestward-moving Pacific plate is being subducted beneath the Aleutian Islands arc. Farther west, the Pacific plate is being subducted along the Kamchatka Peninsula arcs on south past Japan. The southern portion is more complex, with a number of smaller tectonic plates in collision with the Pacific plate from the Mariana Islands, the Philippines, Bougainville, Tonga, and New Zealand; this portion excludes Australia, since it lies in the center of its tectonic plate. Indonesia lies between the Ring of Fire along the northeastern islands adjacent to and including New Guinea and the Alpide belt along the south and west from Sumatra, Java, Bali, Flores, and Timor. The famous and very active San Andreas Fault zone of California is a transform fault which offsets a portion of the East Pacific Rise under southwestern United States and Mexico. The motion of the fault generates numerous small earthquakes, at multiple times a day, most of which are too small to be felt. The active Queen Charlotte Fault on the west coast of the Haida Gwaii, British Columbia, Canada, has generated three large earthquakes during the 20th century: a magnitude 7 event in 1929; a magnitude 8.1 in 1949 (Canada's largest recorded earthquake); and a magnitude 7.4 in 1970.