'Pyroclastic materials' diaporamas de présentation

Volcanoes and Other Igneous Activity

Volcanoes and Other Igneous Activity. A volcano is an opening in a planet's crust , which allows hot magma, ash, rock and gases to escape from below the surface. Volcano Defined.

898 views • 63 slides

Volcanoes and Other Igneous Activity

Volcanoes and Other Igneous Activity. A volcano is an opening in a planet's crust , which allows hot magma, ash, rock and gases to escape from below the surface. Volcano Defined.

647 views • 63 slides

There are three main types of volcanoes Shield Volcano

There are three main types of volcanoes Shield Volcano Stratovolcano (also called composite volcano) Cinder cone volcano Lava Domes are also worth mentioning. Low, rounded profiles Slopes from 2-10 degrees Composed of mafic , low-viscosity flows Basalt lava flows

708 views • 53 slides

Volcanic Activity

546 views • 37 slides

Mt. Unzen, Japan, 1991

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 Mt. St. Helens Site of volcano warning system.

1.25k views • 34 slides

Mt. Unzen, Japan, 1991

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 Mt. St. Helens Site of volcano warning system.

353 views • 34 slides

Today: Chapter 6 Volcanism

Today: Chapter 6 Volcanism. Movie: Eruption of Mauna Loa and Kilauea on Hawaii Nature of volcanic eruptions 3) Materials extruded during eruptions 4) Types of volcanoes 5) Other volcanic landforms. 2. The nature of volcanic eruptions. 1. The nature of volcanic eruptions. - violent?

527 views • 27 slides

Volcanism

Volcanism. Movement of magma inside the earth. Chapter 13 What are volcanoes. Lava- Magma that reaches the earths surface. Vent- The opening that lava flows through. Pyroclastic Material- Pyro; greek word for fire. Clastic; small particles or fragments.

110 views • 10 slides

Volcanoes

Mount Fuji, Japan. Volcanoes. * There are 2 (main) kinds of Volcanoes Steep sloped with violent (explosive) eruptions Gentle sloped with voluminous lava flows. Steep Sloped Violent/Explosive. Composite Cone, Stratovolcano

147 views • 4 slides