EarthScope targets in the central Appalachians Eastern US continental margin preserves the signature of several cycles of supercontinent assembly and breakup.

Slides:

Advertisements

Similar presentations

Plate Tectonic Theory states the outermost layer of Earth is composed of 9 to 15 large plates and numerous small ones Most plates are located on the ocean.

Advertisements

Earth’s Interior and Geophysical Properties Chapter 17.

Earth’s Interior and Geophysical Properties Physical Geology 11/e, Chapter 17.

What Do We Know About the Inside of Our Earth?. Core No direct samples Probably heavy stuff Inner core –Solid –Density of pure iron or nickel/iron –~

Earth’s Interior. The Zones of Earth’s Interior Much of our knowledge of the Earth’s interior comes from the study of earthquake (seismic) waves. Seismic.

Geology of the Lithosphere 2. Evidence for the Structure of the Crust & Upper Mantle What is the lithosphere and what is the structure of the lithosphere?

Proterozoic Evolution of the Western Margin of the Wyoming Craton: Implications for the Tectonic and Magmatic Evolution of the Northern Rockies Southwest.

Earth’s Interior. The Zones of Earth’s Interior Much of our knowledge of the Earth’s interior comes from the study of earthquake (seismic) waves. Seismic.

Engineering Geology. DEFINITION GEOLOGY Greek Earth Geology = The study of Earth The study of.

Earth Systems Science Chapter 7 I.Structure of the Earth II.Plate Tectonics The solid part of the earth system includes processes, just like the atmosphere.

CHAPTER 2 Internal Structure of Earth and Plate Tectonics

GG 450 April 15, 2008 Refraction Applications. While refraction is used for engineering studies such as depth to basement and depth to the water table,

A Layered Earth Solid inner core- 6,370 km deep Liquid outer core- 2,900 km deep Mantle – km deep Brittle crust- Surface to km.

A low velocity layer (LVZ) at the top of the subducting plate has been detected in a majority of subduction zones. LVZ may be a hydrated layer of oceanic.

(Chapter 10 in D & R) Geometry and Kinematics: Plates.

Plate Boundaries  According to the Plate tectonic theory, three boundaries exist at the edges of each tectonic plate. 1) Divergent Boundary (Ridge) 2)

The Role of Active-Source Seismology in EarthScope Gary Fuis U.S. Geological Survey.

2) Super Continent cyclisity (?) and Wilson cycle tectonics

Tectonic boundaries and hot spots. A useful reference dynamicearth/sitemap.html

Earthquakes and Earth’s Interior

Eartscope-GeoPRISMS ENAM planning workshop report October 27-29, 2011 Bethlehem, PA ~95 people Motivation: Choice of East Coast of NA as the RIE focus.

© 2007, John Wiley and Sons, Inc. Physical Geography by Alan Arbogast Chapter 12 Earth’s Internal Structure, Rock Cycle, and Geologic Time Lawrence McGlinn.

Influence of Magma on Rift Evolution: A Modeler’s Perspective Mark D. Behn Department of Geology & Geophysics, Woods Hole Oceanographic Institution Roger.

David Foster - University of Florida Paul Mueller - University of Florida David Mogk - Montana State University David Foster - University of Florida Paul.

Continental Faults at Depth: the roots of the debate Ge Summary: How continents deform is a much debated question. Whether surface strain is localized.

Geology 12 Plate Boundaries There are three types of plate boundaries 1. Divergent (or constructive) plate boundary 2. Convergent (or destructive) plate.

The Layers of the Earth!. Earth Layers The Earth is divided into three major zones that are defined by their compositions. *Core (Inner and Outer) *Mantle.

17.1 Notes: Earth’s Mantle & Crust Continental crust Thickness: Continental crust is thicker (30-40Km) Age: older (up to 4.4 billion yrs old) Composition:

Earthquakes and the Interior  Earthquakes are definitely a geologic hazard for people living in earthquake regions, but the seismic waves generated by.

Jeopardy Final Jeopardy Earthquakes Boundaries Faults/ Stresses

The outer layer of the Earth is the The outer layer of the Earth is the.

Study Guide 6-1 Earth’s Structure.

Layers of the EARTH. Earth’s Layered Structure Layers Defined by Composition 8.4 Earth’s Layered Structure  Earth’s interior consists of three major.

The Earth’s Interior. Most of what we know is from geophysics.

Ch.4, Sec.1 – Inside the Earth - the Earth is divided into three basic layers: the crust, the mantle & the core - the densest layer is the __________ due.

Seismogenic Characteristics and Seismic Structure of the Mariana Arc: Comparison with Central America Douglas A. Wiens, James Conder, Sara Pozgay, Mitchell.

VOLCANOES & IGNEOUS ACTIVITY CHAPTER 10. Section 10.1.

Ch. 7.1: Inside the Earth. Earth’s layers The Earth is divided into three layers 1.) Crust 2.) Mantle 3.) Core Crust and Mantle are made of less dense.

Earthscope in the Northern U.S. Rockies: Tectonic Targets and Passive-Source Seismology Weapons * R. M. Russo Dept. of Geological Sciences University of.

Major Break-up You’re Trapped! In the ZONE Under Da.

Structure of the Earth.

I. Layers Defined by Composition 8.4 Earth’s Layered Structure  A) Earth’s interior consists of 3 major zones (chemical composition).

The Structure of the Earth

GOCE GRADIENT TENSOR CHARACTERIZATION OF THE COUPLED PARANÁ (SOUTH AMERICA) AND ETENDEKA (AFRICA) MAGMATIC PROVINCES Patrizia Mariani and Carla Braitenberg.

Lecture Outlines Physical Geology, 12/e Plummer & Carlson Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Room: 407 Tel: Patrice Rey.

Tectonic Plate Boundaries and Their Effects

1. Crust- outermost layer of Earth’s interior that consists of solid rock.

Crustal Features 8.9B relate plate tectonics to the formation of crustal features.

How has seismic study given us a model of earth’s crust and interior?

Rocks and the Earth’s Interior

Earthquakes A manifestation of rock deformation

Standard 2 Objective 1 Handout 2

Goals (and conclusions)

CCFS-Macquarie University, University of WA, Geological Survey WA

What is the earth like inside?

Chapter 11: The Dynamic Planet

Quiz #3 Due Wednesday before Midnight

Earth layers and seismic waves

After Wegner has published his book on the origin of continents and oceans in Scientists started to have interest in studying Wegner’s hypothesis.

Earth’s Interior.

Earth’s Interior.

8.4 Earth’s Layered Structure

Continental Crust Objectives:

USArray and the Great Plains

If you can look into the mirror without laughter, you have no sense of humor. --Unknown - The most effective way to do it, is to do it. - Amelia Earhart.

Earth’s Interior.

Earths Interior and Layered Structure

Geophysics/Tectonics

EARTH’S LAYERED STRUCTURE

Presentation transcript:

EarthScope targets in the central Appalachians Eastern US continental margin preserves the signature of several cycles of supercontinent assembly and breakup in the surface geology. To what extent have deep structures in the crust and mantle lithosphere persisted over this timeframe? Why has Appalachian topography persisted over long time period?

EarthScope targets in the central Appalachians Central Appalachian swath: Sharp gradients in Moho depths, perhaps corresponding with surface geologic structures (Benoit et al., in prep.). Possible magmatic underplating in lower crust? Lateral transition in shear wave splitting behavior Encompasses C. VA Seismic Zone (2011 Mineral, VA earthquake) Encompasses youngest known volcanic rocks in the eastern US (Eocene basalts in and around Harrisonburg, VA)

EarthScope targets in the central Appalachians Mid-Atlantic Geophysical Integrative Collaboration (MAGIC): FlexArray deployment + geomorphology/geodynamics component