Volcanoes.

Slides:



Advertisements
Similar presentations
Types of Volcanoes Chapter 11 Section 2.
Advertisements

Mt. Fujiyama, Japan Volcanism & Extrusive Igneous Activity expulsion of molten rock (LAVA), gases and water onto the surface of the Earth. expulsion of.
Volcanism Volcanic Features Location and Types of Volcanic Activity
Volcanism The study of volcanoes and their activities.
Volcanoes Lab 5.
Volcanoes and Volcanic Hazards. View From Space - Klyuchevskaya, Russia.
Place these notes in your Notebook.
Chapter 5 Volcanoes and Volcanic Hazards. The Nature of Volcanic Eruptions  Factors determining the “violence” or explosiveness of a volcanic eruption:
Volcanoes A Hot Topic. What is a volcano? A mountain formed by lava and/or pyroclastic material.
Igneous Rocks and Volcanoes. View From Space - Klyuchevskaya, Russia.
Quick Review…….. What are the three main sections the earth is divided into? The ________________ is the rigid crust and uppermost portion of the mantle,
1.Crater– bowl-shaped formation at the top of a volcano.
Three different types of volcanoes exist; Volcano An opening in Earth’s crust through which igneous matter (lava, ash, cinder, and gases) are erupted.
Mt. Unzen, Japan, 1991 Dormant for 200 years Woke up in 1990; erupted into 1992 Lots of pyroclastics Killed the Krafts and Harry Glicken, a survivor of.
Chapter 4 -Volcanism & Extrusive Rocks Photo Credit: S. Young.
Volcano Notes. Anatomy of a volcano magma chamber pipe vent/crater lava tephra.
Updated 4/16/2009Created by C. Ippolito April 2009 Slide 1 Volcano How and Where Formed Magma and Erupted Materials Volcanic Landforms.
VOLCANOES. What is a Volcano? A volcano is a weak spot in the crust where Magma, comes to the surface. Volcanic activity is a constructive force that.
Volcanoes Vocabulary that you are accountable for is underlined! Eruption in Indonesia 1/8/2014.
How do volcanoes form and what affect do they have on the Earth?
Chapter 6 – VOLCANOES. Volcanoes & volcanic hazards Volcano –Vent where lava, solid rock debris, volcanic ash, & gases erupt from inside Earth onto its.
Volcanoes Chapter 6.
VOLCANOES.
CO: VOLCANOES LO: Describe the types of volcanoes, which type of plate boundaries create volcanoes and why volcanoes occur there.
VOLCANISM 80% of the earths crust is composed of volcanic rocks Volcanism: the process by which magma from the interior of the earth rises through the.
EARTH SCIENCE Mrs. Baker cjcb2015
Volcanoes.
Mount Ontake, Japan 9/29/14 Pyroclastic cloud Mount Ontake
CHAPTER 10 Section 1 Objectives  Describe the movement and formation of magma.  Define volcanism  List the three locations where volcanism occurs.
VOLCANOES Stromboli Volcano B. Chouet Kanaga Volcano, Alaska Kanaga Volcano, Alaska E. Klett.
volcanism:any activity that includes the movement of magma toward the surface of the Earth volcano: place where magma reaches the surface What are volcanoes?
Warm Up # 13 What is being shown in the picture on the left? What is being shown in the picture on the right? How do they relate to each other?
THE NATURE OF VOLCANIC ERUPTION
1. What is a volcano?. a. Types of lava A-a, Hawaiian term for lava flows that have a rough rubbly surface composed of broken lava blocks. Sharp clinker.
Volcanoes and Other Igneous Activity. The Nature of Volcanic Eruptions  Factors determining the “violence” or explosiveness of a volcanic eruption: 
Volcanoes.
Volcanoes. Volcanoes Pyroclastic is a term used to describe any materials blasted out of a volcanic eruption The particles from smallest to largest are:
Three Types of Volcanoes
Volcanoes Chapter 6.
Volcanoes!!.
Date: Entry: Volcanoes Pg
Volcanoes!!.
Volcanism Essential Questions: What is a volcano exactly?
VOLCANIC ACTIVITY Unit 2 - Ch 10.
Volcanoes.
Volcano Types.
2012 Anak Krakatau Eruption in Indonesia
Volcanoes.
OBJECTIVES: Types of Magma Anatomy of a Volcano Types of Volcanoes
Volcanic Activity Chapter 18.
Three Types of Volcanoes
Volcanism.
Volcanism Volcanic Features Location and Types of Volcanic Activity
Volcanoes.
Volcanoes Ch. 9.
Mount St. Helens, 1980 eruption
Volcanoes.
Our Geologic Environment
Place these notes in your Notebook.
Volcanoes.
Volcanoes.
Volcanoes.
Volcanoes.
VOLCANOES.
Volcanism Essential Questions: What is a volcano exactly?
Chapter 13 Volcanoes 101 Videoclip
Volcanoes and You.
Volcanoes.
Volcanoes.
Volcanic Activity.
Presentation transcript:

Volcanoes

Hot Spots- area of high temp. lava - made Hawaii

View From Space - Klyuchevskaya, Russia

Magma – molten rock beneath the surface Lava – molten rock on the surface

Types of Volcanoes Composite Cone or

A Cinder Cone: Wizard Island at Crater Lake, Oregon

Icelandic Volcanoes

Eyjafjallajokull

Tuff Ring: Diamond Head, Hawaii

Shield Volcano: Mauna Loa, Hawaii

Stratovolcano or Composite Cone: Mount Shasta, California

Shastina and Landslide Deposit

Products of Eruptions Gases Lava Flows Steam Pyroclastic Debris Carbon Dioxide H2S SO2 HCl HF Lava Flows Pyroclastic Debris Bombs Lapilli Ash Mudflows Landslides

Environmental Hazards of Volcanoes Pollution SO2, HCl in Water Lava Flows Falling Ejecta Ash Falls Building Collapse Crop Destruction Mudflows Direct Damage (Colombia, 1985) Floods (Several Types) Blast (Mt. St. Helens, 1980) Pyroclastic Flow (St. Pierre, 1902) Gas (Lake Nyos, Cameroon, 1986)

Pyroclastic Flow or Nuee- Ardente (French: Fiery Cloud)

How Calderas Form:

Crater Lake, Oregon

Colorado Volcanoes ?– La Garita

Evolution of Volcanoes An active volcanic landscape

Evolution of Volcanoes A volcanic landscape after a million years or so

Mount Hood is a stratovolcano in the Cascades of northern Oregon

The caldera at Crater Lake National Park cuts through the flanks of the former Mount Mazama (composite cone)

Layers of tephra on Usu (stratovolcano) in Japan Layers of tephra on Usu (stratovolcano) in Japan. The crater by the volcanologists was formed in 1977-1978.

Eruption of Galunggung (stratovolcano) in Indonesia.

1980 eruption of Mt. Saint Helens produced 0. 1 cubic miles (0 1980 eruption of Mt. Saint Helens produced 0.1 cubic miles (0.5 cubic km) of ash. Stratovolcanoes are associated with subduction zones, areas where dense oceanic plates are pushed beneath more buoyant continental plates.

The cinder cone in the above photo is Puu Lilinue on Mauna Kea in Hawaii.

Cinder cones are produced by "fire fountains," low-energy eruptions that propel fragments of lava 100s of feet into the air.

A volcanic dome is a steep-sided, rounded extrusion of highly viscous lava squeezed out from a volcano to form a dome-shaped, or bulbous, mass of lava above and around the volcanic vent

During the 1989-1990 eruption of Redpubt volcano (Alaska) several lava domes grew and collapsed near the summit of the volcano.

Flood Basalts The Columbia River basalts cover parts of the states of Oregon, Washington, and Idaho and are a famous example of flood basalts that produced a lava plain.

Lava Eruptions under water or ice produce pillow lava (become pillow basalt)

Coastal Flows

"Pahoehoe" and "aa" are Hawaiian words used to describe the type of lava volcanoes have

Aa Flow

Pahoehoe

Lava Tubes