Section D. Tectonics and Regional
Deformation Chapter
14. Whole Earth Structure and Plate Tectonics
Chapter
15. Extensional Tectonics
Chapter
16. Convergence and Collision
Chapter
17. Fold-Thrust Belts - Essay (with Scott Wilkerson)
Chapter
18. Strike-Slip Tectonics
Chapter 19.
Perspectives of Regional Geology - Essays
General Introduction
The European Alps - John Platt
The Tibetan Plateau and surrounding regions - Leigh Royden
and B. Clark Burchfiel
The North American Cordillera - Elizabeth Miller and Phil
Gans
The Central Andes - Richard W. Allmendinger and Teresa
E. Jordan
The Northern Appalachians - Dwight D. Bradley
The Caledonides - Kevin T. Pickering and Alan G. Smith
The Tasman Belt - David Gray
Tectonic Genealogy of North America - Paul F. Hoffman
The US Continental Interior - Stephen Marshak and Ben
A. van der Pluijm
Supplements
The following section is maintained
under University of Michigan's course
GS351/451
and is provided as an educational service to EarthStructure
users. The University of Michigan nor the publisher of EarthStructure
(McGraw-Hill) are responsible for the content of this site. Colleagues
from around the world are thanked for generously sharing their efforts
with students and educators. We have listed credits and sources where
possible; please do the same when using these resources.
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Stereonet for Mac, by Rick Allmendinger. A program for spherical
projection of directional datasets. Go to the original source at
ftp://www.geo.cornell.edu/pub/rwa/Stereonet/
where you will find the latest version of the program and other information.
StressMohr
for Windows, by Ulrich Kruse. This program illustrates the use
of stress calculations for two-dimensional systems. The program consists
of five displays. In each display you can vary the physical situation and
immediately see the effects in the graphical displays. The first display
illustrates the relation between forces and stresses acting on a rectangular
solid. In the second display, you explore the stress on a plane as you
vary the orientation of the plane and the state of stress in the system.
We illustrate the calculation of the stress on the plane in terms of a
simple matrix multiplication in the third display. You can also observe
the simple geometry of the envelope of the stresses that are produced as
the angle of the plane is varied. The fourth display shows the behavior
of the normal and shear components of the stress on the plane. When the
normal component is plotted along x and the shear component along y, the
envelope will be a circle: called a Mohr circle. This beautiful result
lets you visualize the range of possible stresses on the plane. Finally
in the last display, you can explore the conditions which lead to the fracture
of a sample: you can vary the stresses until the stresses are just strong
enough to cause fracture by watching the changes in size and location of
the Mohr circle.
Click here
to download the zipfile that contains the program and a MSWord version
of the manual. The manual is also available online by clicking
here.
Strain
Calculator (0<Wk<1) for W95, by Rod
Holcombe.
Strain Calculator presents strain data and calculations graphically and
numerically. Conversions of strain ratios to stretches at a given volume
change can be plotted directly onto a logarithmic strain plot (see screen
shot). Shear zone parameters (ellipticity, deformed and undeformed orientations,
etc.) for any shear strain value or vorticity number (Wk) are
calculated and shown graphically. Please note use restrictions.
Deformation
microstructures of rocks (Tullis/Teyssier/Stünitz at Minnesota);
small images and descriptions of microstructures in experimentally deformed
rocks.
Disclaimer. The text
and illustrations on this and linked EarthStructure
pages are strictly for educational purposes. All opinions expressed are
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nor the home institutions of the authors. Copyright. This page and its
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from the original copyright holders, the authors and/or the publishers.
You are # This page was last updated on Friday, May 18, 2001.