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MARGINS Initiative
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Role of Plate Motion Obliquity in Rifting
Jack Loveless, Smith College; Scott Bennett, U.S. Geological Survey; Rebecca Dorsey, University of Oregon; Sue Cashman, Humboldt State University; Lisa Lamb, University of St. Thomas (MN); Andrew Goodliffe, The University of Alabama
A module that uses Euler poles to describe the relative motion between the Baja Microplate and North American Plate, highlighting how the obliquity of rifting changes along strike in the Gulf of California.
Slab temperatures control melting in subduction zones, what controls slab temperature?
Chris Kincaid, University of Rhode Island
Hands-on demonstrations of advection and diffusion of heat in subduction zones, and their controls on slab thermal evolution and relationships to melting, using analog models.
Exploring Styles of Extension in the Gulf of California
Lisa Lamb, University of St. Thomas (MN); Rebecca Dorsey, University of Oregon; Scott Bennett, U.S. Geological Survey; Sue Cashman, Humboldt State University; Jack Loveless, Smith College; Andrew Goodliffe, The University of Alabama
An introduction to processes associated with continental rifting, and resulting fault geometries and distributions, and lithospheric responses, using seismic data examples from the Gulf of California.
Bathymetry of Rifted Margins
Sue Cashman, Humboldt State University; Rebecca Dorsey, University of Oregon; Scott Bennett, U.S. Geological Survey; Lisa Lamb, University of St. Thomas (MN); Jack Loveless, Smith College; Andrew Goodliffe, The University of Alabama
This is one component of the Rupturing Continental Lithosphere suite of mini-lessons. Students investigate the morphology of rifted margins by creating topographic/bathymetric maps and profiles across the Red Sea ...
Contemporary Climate Oscillations: ENSO and a case study of the Huanghe River
Steve Kuehl, College of William and Mary
This module uses data of monthly mean sea level pressure from Tahiti and Darwin, Australia to calculate the Southern Oscillation Index (SOI) of El Niño-Southern Oscillation (ENSO) for comparison with the Huanghe River (China) discharge and correlated anthropogenic effects.
From Source to Sink: How Sediment Reflects the Journey from the Mountains to the Sea
Lonnie Leithold, North Carolina State University; Adam Hoffman, University of Dubuque; Kathy Surpless, Trinity University; Steve Kuehl, College of William and Mary
This is one component of the Source to Sink Mini Lesson Set Continental margins are phenomenal places to study the modern sedimentary cycle because sediment in margin regions has been routed from mountains ...
Overview: The Subduction Factory Mini-lessons
Ben Edwards, Dickinson College; Chris Kincaid, University of Rhode Island; Bob Stern, The University of Texas at Dallas; Sarah Penniston-Dorland, University of Maryland-College Park
Role of Sedimentation in Rifting
Sue Cashman, Humboldt State University; Rebecca Dorsey, University of Oregon; Scott Bennett, U.S. Geological Survey; Jack Loveless, Smith College; Lisa Lamb, University of St. Thomas (MN); Andrew Goodliffe, The University of Alabama
A module in which students use field and geophysical measurements and observations of Gulf of California basins to calculate isostasy and its controls.
Subduction zone metamorphism
Sarah Penniston-Dorland, University of Maryland-College Park
This module introduces students to subduction zone metamorphism through the examination of rock samples, calculating P-T-t paths, and comparing them to thermal model predictions of P-T paths.
Accretionary vs. erosive subduction margins
David Pearson, Idaho State University; (James) Casey Moore, University of California-Santa Cruz; Jeff Marshall, California State Polytechnic University-Pomona; Eliza Richardson, Pennsylvania State University-Main Campus
This module examines the nature and variability of subduction margins through examination of data sets that document subduction zone inputs, deformation, and resulting morphology in different settings.