Hi Bruno,
I think David has been in touch. Yes sounds like a great idea and we'd love
to find a way to work with you. I'll make sure David has the support
internally to make sure it gets on the road and I look forward to meeting up
with you again in the near future.
alan
Alan Gibbs
Director
Midland Valley Exploration
14 Park Circus
Glasgow
G3 6AX
tel: 44 (0) 141 332 2681
fax; 44 (0) 141 332 6792
[log in to unmask]
www.mve.com
-----Original Message-----
From: Tectonics & structural geology discussion list
[mailto:[log in to unmask]]On Behalf Of Bruno C. Vendeville
Sent: 29 January 2003 00:22
To: [log in to unmask]
Subject: 3-D Move
Dear Alan,
I hope that you remember me. I work on salt tectonics, using both real data
and physical models.
A few months ago, I worked on a 3-D seismic-reflection data set from one of
the classic Texas Gulf Coast salt diapirs near Houston. It turns out that
this is not a simple, wide, circular diapir, but a much narrower diapir
conduit with an overhang that was inflated after extrusion. I have also
conducted a couple of physical models reproducing some of the features
observed on the data set.
I was hoping to be able to do some 3-D restorations of the data set (only
of the part of the section overlying the overhang) . We have a good control
of the stratigraphy and can produce a depth-converted volume. Structurally,
this is a simple system: the area was subjected to overhang inflation only
(i.e., with little or no interference from regional tectonics: hence no
extension or shortening to account for). The deformation pattern includes
only a few radial faults (about 6: we have only one half of the dome in the
data set).
On the experimental side, I have models where I have a grid printed on the
top surface, which means that I can measure the surface stretch
continuously though time. I may even be able to run another experiment
during which I would be using a 3-D scanner: this would allow me to record
the X, Y, Z coordinates throughout the entire deformation history. This
could be criticalin testing the different method for restoring such
structures.
With my colleagues, we plan to write a paper on how the rise of the dome
has influenced the syngrowth depositional patterns. For this, it would be
best if we could produce some restorations of the dome's geometry at
different stages (not more than 4 stages).
We do not have 3-D Move here. But I was wondering whether you would be
interested in a mutually beneficial collaboration, in which we would
provide you the data set, and you, in turn, would produce the restorations.
The benefit for us is obvious. On your side, Midland Valley could use the
results (although not the seismic data themselves; these are not ours and
we may not be able to publish them) for advertizing, testing and training
purposes. We could try to get the interpreted data in the format best
suited to you so that you would have to spend only a minimal amount of time
restoring it. For example, this could be a good way to test a variable
orientation of inclined-shear directions.
If you are interested, you would have to tell me which format is best
suited for that. We have EarthVision, GoCad, and various other tools to
produce CAD-based 3-D computer models of interpreted surfaces.
Timewise, we are in no hurry. We would be starting at the end of spring,
with the goal of submitting a paper in the early fall.
I hope that you will be interested in this collaboration. If, for
logistical reasons, you view this as impossible, do you have any
suggestions for me?
Thanks in advance,
Bruno
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
Bruno Vendeville
Senior Research Scientist
Bureau of Economic Geology
John A. and Katherine G. Jackson School of Geosciences
The University of Texas at Austin
University Station, Box X
Austin, Texas 78713-8924
e-mail: [log in to unmask]
Phone (direct): (512) 471-8334 Phone (switchboard): 512 471 1534
Fax: (512) 471 0140
|