By: Theresa Zajac & John Solder

Slides:

Advertisements

Similar presentations

Chapter 8: Plate Tectonics

Advertisements

The Geological History of British Columbia

CascadiaSubductionZone. The Rocky Mountain Region – Steep hills that are foothills of the Rocky Mountains in the northern corner of the state.

Plate Tectonics Ch 8 I. Plate Tectonics - study of the movement of the plates of the Earth’s surface A. Lithosphere - crust & upper mantle broken into.

Types of Plate Boundaries

Describe the differences and relation between the lithosphere and asthenosphere.

Geology of the Sierra Nevada Mountain Range By Elena Kurbatova South Lake in the Sierra Nevada Mountains, courtesy of Duane Shoffner.

Science ~ chapter 6 volcanoes

California Geologic History

Mount Rainier and Mount Fuji Geologic Overview. Mount Rainier is born of fire and shaped by ice. It is a geologically young volcano but has been worn.

Section 3: The Changing Continents

Harry Williams, Historical Geology1 HISTORICAL GEOLOGY EARLY CENOZOIC I. EARLY CENOZOIC: ( MYBP): Introduction: Much of the landscape as it appears.

Mountain building & the evolution of continents

Alfred Wegener ( ). Mid Atlantic Ridge Mid Ocean Ridge System.

The Olympic Mountains A Wedge of Fun. Olympic Mountains, Wilapa Hills & Oregon Coast Range E-1.

The Geological History of British Columbia. Geology of Canada.

The Growth of Western North America Exotic Terranes Photo of Mt Shuksan by Patti Bleifuss.

Development of Continental Drift Frank Taylor (1910) Alfred Wegener (1912) Die Entstehung Der Kontinente Und Ozeane.

Cenozoic -The development of the Earth as we know it today

Science 10H Earth Science: Geological History of BC.

Geology Students Name Geology Dr. Houghton April 16, 2013

Continental Tectonics and Mountain Chains

Plate Tectonics.

mountains, mountain building, & growth of continents

Lecture 4 Outline: Plate Tectonics – Mechanisms and Margins Learning Objectives: What are the types of plate boundaries? What processes occur at different.

Cenozoic History At only 66 million years long,

1. California Rock Stories Linking tectonics to rock formation 2. Geologic History of California: Part II Ellen Metzger BAESI – July 2012 Source of photos:

bentler. us/washington-state/maps/img/washington-state-map

The Far Corner: Washington’s Geography and Geology

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.

Cenozoic Era Geologic Time. Eons: Hadean ▫ bya Archaean ▫ bya Proterozoic ▫2.5 bya – 543 mya Phanerozoic 543 mya- present.

Chapter 10, Section 2 Chapter 10, Section 3. Key Terms Create a flashcard for each of the following terms (found on p.255 in your text book).  Rifting.

Choose a category. Choose a dollar amount. You will see the answer, and you must create the correct question. Click to begin.

Pacific Northwest Geology. Northwest Geology Starting points We’re interpreting events & conditions in the past using available evidence – the rock record.

Geology of the Feather River Where does one start? NERDS 2006 Teresa Kennedy.

LARAMIDE OROGENY Major tectonic event that formed the Rocky Mountains Occurred Mya Occurred in the interior of a plate Occurred 1,000 miles from.

CO: VOLCANOES LO: Describe the types of volcanoes, which type of plate boundaries create volcanoes and why volcanoes occur there.

3 GEOLOGICAL FEATURES Mara Sprang. The Hawaiian Islands were formed by volcanic activity from an undersea magma source called a hotspot. As the tectonic.

The Problem with Continental Drift While Wegener was able to find evidence of continental drift, there were 2 major problems with his ideas: – Wegener.

The Far Corner: Washington’s Geography and Geology Essential Question How does Washington’s geography and geology affect the way we live?

Please click when finished reviewing this information.

California Geology. *Earth’s crust is divided into several tectonic plates that have moved over time across the surface of the earth.

Section 3: The Changing Continents

Eric H. Christiansen Brigham Young University

Geology of Washington A very interesting state, indeed!

Coastal Plain Appalachian Highlands Laurentian Upland Interior Plains Interior Highlands Rocky Mountain System Colorado Plateau Basin and Range Columbia.

Plate Tectonics and Landforms

California’s Geologic History. Location, location, location…  Three continental plates come together  Very complex history.

Table of Contents Volcanoes and Plate Tectonics Volcanic Eruptions Volcanic Landforms Volcanoes.

MOUNTAINS. PART 1 - GEOGRAPHY THE MAJOR MOUNTAIN RANGES OF THE WORLD The Himalayas Location: Southern Asia stretching across the countries of Tibet,

The Geological History of British Columbia

PLATE BOUNDARIES & CONVECTION

Mt. Rainier Tectonic Setting

Cascade Volcanism Is Back

California Standards 3.b.,c. & f.

Evolution of the Earth.

The Far Corner: Washington’s Geography and Geology

The Far Corner: Washington’s Geography and Geology

Plate Tectonics Mountain Building.

Plate Tectonics Plate: large rock surfaces along which rocks can break or move Plate Tectonics: Primary process that creates earthquakes and volcanoes.

The Big Crack Up!.

Four Types of Mountain Formation

PLATE BOUNDARIES & CONVECTION

Plate Tectonics Ch 8 I. Plate Tectonics - study of the movement of the plates of the Earth’s surface A. Lithosphere - crust & upper mantle broken into.

Chapter 5, Lesson 2, California Geology

Chapter 10 Plate Tectonics 10.3 The Changing Continents

The Far Corner: Washington’s Geography and Geology

Chapter 5, Lesson 2, California Geology

Convergent Plate Boundaries

Presentation transcript:

By: Theresa Zajac & John Solder The Cascades By: Theresa Zajac & John Solder

Geography & Climate Extends 700 miles N-S Lassen Peak to Lytton Mountain West Slope – 150 inches East foothills – 9 inches Temperate rain forest to alpine Mount Rainier 14,411 ft http://www.skimountaineer.com/CascadeSki/Images/CascadesMap.jpg

Geology Cascades- volcanics North Cascades Western Cascades Eocene & Miocene High Cascades Pliestocene North Cascades Western Greenschist facies Meta-sedimetary &Meta-volcanic (Paleozoic to Mesozoic formation and Paleogene metamorphism) Metamorphic Core Epidote-Amphibolite facies meta-volcanic and meta-sedimentary (Mesozoic) Methow Oceanic sandstones and shales (Mesozoic back-arc basin)

Tectonics Juan de Fuca and Gorda plate subduction is source of modern volcanism and seismic activity. N. Cascades trisected by N-S running faults. Paleomagnetic data suggest rotation and northward movement of Cascades.

Crust and Lithosphere Oregon- high heat flow, >80 mW/m^2 Gao, 2011 Oregon- high heat flow, >80 mW/m^2 Wash.- low heat flow, <40 mW/m^2

Chronology 500-200 m.y.a - North Cascades plutons implaced 100 m.y.a –Farallon Plate begins subducting beneath N. America 90 m.y.a. –Terranes accreted onto N. America 36 m.y.a. - Cascade Range volcanism begins 5-7 m.y.a. – After lull in activity, Cascade volcanism resumes, forming High Cascades. 4-7 m.y.a – Juan de Fuca separates from Explorer plate, steeping subduction angle of Juan de Fuca, prompting the folding of the N American plate and uplifting of North Cascades May 18, 1980 – 31 years ago – Mt. St. Helens ERUPTS!!!!