Corso di Petrografia Corso di Laurea in Geologia Escursione ai vulcani Vulsini.

Slides:

Advertisements

Similar presentations

Volcano Jeopardy EruptionsMagmaStuff that comes out.

Advertisements

V. Volcanoes and Volcanism A. Mafic Volcanism and Volcanic Rocks B. Felsic Volcanism and Volcanic Rocks A. Mafic Volcanism and Volcanic Rocks B. Felsic.

Eruptions!. Rift Eruptions This type of eruption occurs along narrow fractures in the Earth’s crust. This type of eruption occurs along narrow fractures.

Volcanoes: eruptive style and associated landforms

Explain the relationship between igneous activity, magmatic composition, rock types and plate boundaries.

Created by Science Teachers Unit 4 Lesson ChangesTimeForcesAgents

Some notes on note-taking: In response to the Friday fieldtrip to San Clemente beach.

Introduction to volcano characteristics and activity

ROCK TYPES & NAMES Igneous Metamorphic Sedimentary.

Volcanoes. Processes that Form Magma in the Crust and Upper Mantle Increase in temperature Pressure-Release Melting: decrease in confining pressure lowers.

Question Where are volcanoes found? What is a hot spot? Answer Volcanoes form along the boundaries of Earth's plates. An area where material from deep.

The Ring of Fire consists of chains of active volcanoes around the Pacific. What type of plate boundary are these volcanoes adjacent to? 1.Transform 2.Convergent.

Volcanoes and Other Igneous Activity

Prentice Hall EARTH SCIENCE

Volcanoes and Other Igneous Activity

Volcanoes & Tectonics Seamounts and Guyots. Lava Viscosity (silica, Temp.) & explosiveness Basaltic lava - less silica and higher temperature, low viscosity,

Volcanoes. Types of Eruptions Violent and explosive Quiet and flowing –Depends on trapped gases and magma composition.

Table of Contents Title: 18.1 Volcanoes; Divergent Volcanism & Hot Spots Page #: 103 Date: 4/29/2013.

Earth’s Structure, Earthquakes and Volcanoes Review.

Rock Cycle Builds, destroys, and changes rocks from one form to another. Millions of years to happen.

VOLCANOES. 1. Increase Temperature 2. Decrease Pressure 3. Alter Composition (to decrease melting temperature) Melting the Mantle.

Chapter 6 – VOLCANOES. Volcanoes & volcanic hazards Volcano –Vent where lava, solid rock debris, volcanic ash, & gases erupt from inside Earth onto its.

Volcanoes. The Nature of Volcanic Eruptions Viscosity (resistance to flow) determines the “ violence ” or explosiveness of a volcanic eruption Factors.

Chapter 7 Volcanoes $200 $400 $600 $800 $1000 $200 $400 $600 $800 $1000 $200 $400 $600 $800 $1000 $200 $400 $600 $800 $1000 Volcanoes and Plate Tectonics.

Plate Boundary Volcanism Reference: Pages & 557 Volcanoes are associated with two of the three types of plate boundaries, these being convergent.

Volcanos: Chapter Volcano A volcano is a week spot in the crust where molten material, or magma, comes to the surface.

Volcanoes- Section 1 Volcanoes and Earth’s moving plates

Important Facts on Volcanoes

Chapter 18 Volcanism and Plate Tectonics. There are about 485 active volcanoes world wide. Volcano is a term applied to a structure built around a vent.

Prentice Hall EARTH SCIENCE

Rocks. Igneous Rock Origin: Magma from within the Earth cools to form igneous rock. Extrusive: Magma that reaches the surface, becomes lava and cools.

Volcanoes Shield Volcano Typically Basalt Lava Flows Low Slope Angle.

How does a volcano erupt?

Volcanoes Objective: Identify how magma forms as a result of plate motion Explain why plate boundaries have volcanic activity.

Volcanoes Chapter How & Where Volcanoes Form Sec. 1 What is a volcano? –1. opening in Earth’s crust through which molten rock (magma), gases, &

Types of Lava and. What’s the Difference? Magma is composed of molten rock and is stored in the Earth's crust. Lava is magma that reaches the surface.

Volcanoes Forms when magma reaches the Earths surface and erupts as lava or ash.

Volcanoes Chapter 7. Volcanoes Volcano is a weak spot in crust where molten material comes to the surface Magma is a molten mixture of rock-forming.

How do volcanoes affect the lithosphere, plate boundaries, & the atmosphere? Unit 5 EEn

Volcanoes. Volcanic activity takes place primarily at subduction boundaries, VOCABULARY How and Where Volcanoes Form Oceanic lithosphere Continental lithosphere.

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?

Volcanoes Effect on Earth. An Explosive Impact Flows and Fallout Characteristics ◦ Can flow like an avalanche ◦ Can mix with water to form mudslides ◦

Volcanoes. Ag Earth Science – Chapter 10.1 viscosity A measure of a fluid’s resistance to flow.

Definitions Section 9.2.

Mrs. Gordon Earth Science Tuesday, July 03, 2018

Volcanic Activity chapter 18

Stuff that comes out of a volcano

Volcano Characteristics

Get Ready for an ERUPTION!!!

Hosted by Your 6th Grade Science Teacher

Mount St. Helens, 1980 eruption

Hosted by Your 6th Grade Science Teacher

Volcanoes What is a Volcanism & volcano? Nature & origin of volcano

Volcanic processes.

Hosted by Your 6th Grade Science Teacher

INTRUSIVE AND EXTRUSIVE VOLCANIC FEATURES

Volcanic Activity Chapter 18

The Changing Earth The Changing Earth.

Where do volcanoes form?

The rock cycle..

Presentation transcript:

Corso di Petrografia Corso di Laurea in Geologia Escursione ai vulcani Vulsini

Pietre Lanciate, near the Bolsena Village, is an example of a basaltic lava flow with well developed columnar jointing. These structures are generated by volume contraction of the lava body during cooling. Figure 3

Formation of the Bolsena Caldera Figure 5

Formation of an ignimbritic plateau A – Pyroclastic cloud flowing along a valley B – Deposition of pyroclastic material and formation of a welded tuff C – Relief inversion by erosion of soft bedrocks (e.g. clay) Figure 9

Pyroclastic flow tuff (ignimbrite) Fallout tuffs Figure 10

Phreatomagmatic eruptions occur when magmas and water came into contact Figure 12

Rock Geochemistry

LaSrHf Zr Sm Oceanic basalts Ta Nb CeNd Pb P Ti Tb Y F Ba Rb Th K U Rock/Bulk Earth Limestone Vulsini magmas Figure 14

line Vulsini Subducting Adriatic continental plate Subducting Ionian Plate Subduction of Adriatic and Ionian plates beneath the Italian pensinsula is responsible for magmatism in central and southern Italy Figure 16

Figure 17