Anthropology

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LIVE INTERACTIVE LEARNING _at_ YOUR DESKTOP
NSDL/NSTA Web Seminar Hotspots, Plumes and
LIPSEverythings Coming up Igneous!
Tuesday, October 2, 2007
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Todays NSDL Experts
Dr. Chris Massell Symons, Researcher at the
Scripps Institution of Oceanography

Dr. Anthony Koppers, Associate Professor of
Marine Geology and Geophysics at Oregon State
University
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The Earths surface is broken into plates
Stamp a place on the map where you expect the
most volcanism
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Volcanism
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Rigid lithospheric plates float on partially
molten asthenosphere
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Inside the Earth
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Mantle convection - the driving force for plate
tectonics
What causes the lighter material to rise? Write
your answers on the chat
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Global Distribution of Seamounts
I will generate a new grav map that highlights
Pacific seamounts..
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Active hotspots associated with seamount trails
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Poll Question!
Approximately how long has the Hawaii hotspot
been active? a. 8,000 years b. 8 million
years ago c. 80 million years ago d. 180
million years ago
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We can observe the evolution of a seamount chain
above the seafloor..
What is the source of the magma below the
seafloor?
Stamp your answer
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Mantle Plumes
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Lifecycle of a Mantle Plume
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Mantle convection and hotspot formation
Cross-sections of the Earth
Red hot upwelling from core-mantle boundary Blu
e cold downwelling
Cold lithosphere sinks, hot plumes rise.
Computer Model
Cartoon Schematic
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Which is not related to a hotspot? Stamp your
answer
Yellowstone
Iceland
Hawaii
Mt. St. Helens
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Large Igneous Provinces aka, LIPS
LIPS are NOT restricted to plate boundaries.
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Red LIPS emplaced since 250 Ma
Columbia River Basin Flood Basalts with source at
Yellowstone
Deccan Traps, India
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How do you get a LIP?
Recall the lifecycle of a plume
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LIPS and Major Extinctions
300
250
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Ages of Mass Extinctions (million of years
before present)
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Dinosaurs Extinct
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50
350
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100
150
200
250
300
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Age of LIPS (million of years before present)
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Upwelling on Mars
Olympus Mons 79,000 feet high 340 miles diameter
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An ultrasound of the earth seismic tomography
Paths of seismic waves
Earthquake
CAT Scan of Brain Layered X-Rays
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Seismic Tomography
Hotter (Slower)
Colder (Faster)
Hotspots on surface
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Enduring Resources for Earth Science
Educationhttp//earthref.org/ERESE
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Earthref.org -Topical Index
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ERESE Lessons and Projects
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Dr. Chris Symons csymons_at_ucsd.edu
THANK YOU!
Dr. Anthony Koppers akoppers_at_coas.oregonstate.edu
http//earthref.org/ERESE
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Go to http//nsdl.org and click on the K-12
audience page to

• Download our Seminar Resource List
• Utilize our blog featuring our presenters for the
  Fall Series sharing their insights on careers in
  science and science education
• http//expertvoices.nsdl.org/2007fall-nsta-sems
  /

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Elluminate logo
http//www.elluminate.com
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National Science Teachers Association Gerry
Wheeler, Executive Director Frank Owens,
Associate Executive Director Conferences and
Programs Al Byers, Assistant Executive Director
e-Learning
NSTA Web Seminars Flavio Mendez, Director Jeff
Layman, Technical Coordinator
LIVE INTERACTIVE LEARNING _at_ YOUR DESKTOP