Mark,
As a plug for the Open University in their excellent course S267: How
the Earth Works - Block 2 Plate Tectonics there is a very useful Table
2.5 on page 91 which gives for each plate ... total plate area,
continetal area, average true velocity, circumference, and effective
lengths of ocean ridges, ocean trench and transforms.
The sources are not documented (as far as I could see) but my students
(OU) have been using it for several years....without harm.
If you don't have a copy of Block 2 easily available, I'm sure I could
copy/scan it.
Regards
Richard
Dr. R.W. Holt
Earthworks
www.earthworks-jobs.com
[log in to unmask]
Phone: +44 (0) 1223 324344
Fax: +44 (0) 1223 709513
-----Original Message-----
From: Mark Brandon <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: 02 April 2003 15:26
Subject: Plate statistics
|I have been looking for a while for a publication that summarizes
features
|of modern plate boundaries.
|For instance, it is often noted that there is about 40,000 km of
subduction
|zone on the modern earth,
|but I cannot find any paper as a source for that figure. I am also
looking
|for the average subduction
|velocity at modern plate boundaries. Can any one point me in the
right
|direction for this information.
|Cheers,
|Mark Brandon
|
|_____________________________________________________________________
___
|Mark Brandon, Professor, Dept. of Geology and Geophysics
|Yale University, P.O. Box 208109, 210 Whitney Avenue, New Haven, CT
06520-8109
|e-mail: [log in to unmask]
|wk. phone: +203-432-3135, wk. fax: +203-432-3134
|Dept. Web site: http://www.geology.yale.edu
|Brandon's site: http://www.geology.yale.edu/~brandon
|_____________________________________________________________________
___
|
|
|