Inside Earth 3.3 Volcanic Landforms
... • Massive eruption empties the main vent and magma chamber beneath the volcano • The hollow mountain then collapses inward due to lack of support • A Caldera is the large hole left behind • Fills with pieces of the volcano, ash and water – Crater Lake in Oregon ...
... • Massive eruption empties the main vent and magma chamber beneath the volcano • The hollow mountain then collapses inward due to lack of support • A Caldera is the large hole left behind • Fills with pieces of the volcano, ash and water – Crater Lake in Oregon ...
Introduction to Volcanism and Plate Tectonic Overview
... vesicular: frothy (trapped gas bubbles)! ...
... vesicular: frothy (trapped gas bubbles)! ...
PETROLOGY - Universitas Muhammadiyah Surakarta
... Intermediate in composition between sialic and mafic Rock types include: Andesite (aphanitic) Diorite (phaneritic) Accecories mineral : plagioclase feldspar, amphibole, pyroxene, biotite, quartz ...
... Intermediate in composition between sialic and mafic Rock types include: Andesite (aphanitic) Diorite (phaneritic) Accecories mineral : plagioclase feldspar, amphibole, pyroxene, biotite, quartz ...
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 ...
Types of Rocks
... Small Plutons (body of plutonic rock of any size or shape, intrusive rock - i.e. have intruded into the host rock) i) Dikes - discordant - cut across layers ii) Sills - concordant - parallel to layers Laccolith - concordant - more or less circular in shape, up to 3 km across b) Deep Batholith - cont ...
... Small Plutons (body of plutonic rock of any size or shape, intrusive rock - i.e. have intruded into the host rock) i) Dikes - discordant - cut across layers ii) Sills - concordant - parallel to layers Laccolith - concordant - more or less circular in shape, up to 3 km across b) Deep Batholith - cont ...
Chapter 6 Section 2 Notes
... • Sills: layers of rock parallel to the layers of rock that surround it. • Dykes: new layers cutting across existing layers. ...
... • Sills: layers of rock parallel to the layers of rock that surround it. • Dykes: new layers cutting across existing layers. ...
CLASSIFICATION OF PYROCLASTIC ROCKS
... this diverse environment pyroclastic and lava flows deposits are observed throughout. The objective of this lab is to discriminate between these two main groups of volcanic deposits and then further sub-classify based on the group in which the sample falls. In the continental arc environment, most l ...
... this diverse environment pyroclastic and lava flows deposits are observed throughout. The objective of this lab is to discriminate between these two main groups of volcanic deposits and then further sub-classify based on the group in which the sample falls. In the continental arc environment, most l ...
INW 2015 - Lecture 2
... Catastrophic Floods Plate Tectonics and Continental Uplift are the major underlying forces ...
... Catastrophic Floods Plate Tectonics and Continental Uplift are the major underlying forces ...
The Cascade Volcanoes - West Virginia University
... Strongly plagioclase porphyritic Andesite-dominated strato-volcanoes Wider variety of rock types (basalt-andesite-dacite-rhyolite suite) than in tholeiitic suites ...
... Strongly plagioclase porphyritic Andesite-dominated strato-volcanoes Wider variety of rock types (basalt-andesite-dacite-rhyolite suite) than in tholeiitic suites ...
Unit test review - hrsbstaff.ednet.ns.ca
... Unit test review: Label a volcano Distribution of volcanoes Geologic formations (pillow basalt, columnar jointing, plateau basalt) What comes out of a volcano? How does it affect surrounding areas? Effects of ash fall? Viscosity of lava: Aa, pahoehoe, what changes it’s viscosity Pysroclastic flow: h ...
... Unit test review: Label a volcano Distribution of volcanoes Geologic formations (pillow basalt, columnar jointing, plateau basalt) What comes out of a volcano? How does it affect surrounding areas? Effects of ash fall? Viscosity of lava: Aa, pahoehoe, what changes it’s viscosity Pysroclastic flow: h ...
Analysis on Rock Textures Submitted by WWW
... anash tuff or crystal tuff. A welded tuff is a rock that consists of ash particles and glass shards that were hot enough to fuse together when it was deposited. The rocks that contain the larger bombs are called tuff breccias or agglomerates. Other distinctive extrusive rock textures occur in flood ...
... anash tuff or crystal tuff. A welded tuff is a rock that consists of ash particles and glass shards that were hot enough to fuse together when it was deposited. The rocks that contain the larger bombs are called tuff breccias or agglomerates. Other distinctive extrusive rock textures occur in flood ...
Basalt has a high melting point and is very runny (like honey) – in
... and it flows like cold treacle. Because if flows more slowly than basalt, it forms volcanic cones with a much steeper shape, called cone volcanoes. Examples of cone volcanoes include Mt Taranaki and Mt Ruapehu. Rhyolite magma is the most viscous type of magma – it flows like tar. It is light in colo ...
... and it flows like cold treacle. Because if flows more slowly than basalt, it forms volcanic cones with a much steeper shape, called cone volcanoes. Examples of cone volcanoes include Mt Taranaki and Mt Ruapehu. Rhyolite magma is the most viscous type of magma – it flows like tar. It is light in colo ...
Geology 101 Homework 4
... 4) Explain the three ways magma forms inside the Earth (p. 140). What is the relationship between plate tectonic setting and the way magma forms? (p. 156) Which magma formation process occurs most frequently inside the Earth? 5) What shapes do bodies of igneous rock form when they intrude the Earth? ...
... 4) Explain the three ways magma forms inside the Earth (p. 140). What is the relationship between plate tectonic setting and the way magma forms? (p. 156) Which magma formation process occurs most frequently inside the Earth? 5) What shapes do bodies of igneous rock form when they intrude the Earth? ...
Name - worldculturesblock9
... e. a large body if intrusive igneous rock when magma cools underground ...
... e. a large body if intrusive igneous rock when magma cools underground ...
Volcanic Misconceptions State whether each statement is true or false
... 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 volcanic sites. 6.Lava kills the most people ...
... 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 volcanic sites. 6.Lava kills the most people ...
Ring of Fire – Around Pacific area, lots of volcanoes
... Pahoehoe – higher temperature, runnier, like honey, ropy texture at end ...
... Pahoehoe – higher temperature, runnier, like honey, ropy texture at end ...
Mount Pleasant Caldera
The Mount Pleasant Caldera is a large eroded Late Devonian volcanic caldera complex, located in the northern Appalachian Mountains of southwestern New Brunswick, Canada. It is one of few noticeable pre-Cenozoic calderas, and its formation is associated to a period of crustal thinning that followed the Acadian orogeny in the northern Appalachian Mountains.It sits relatively near to the coastline.