HDTenEightyP/NetNews huggingface dataset:
From: v103pye8@ubvmsd.cc.buffalo.edu (BRUCE WAPPMAN)
Newsgroups: sci.geo.geology
Subject: Questions on PVWAVE & SURFER
Date: 6 Nov 92 01:21:00 GMT
Organization: University at Buffalo
News-Software: VAX/VMS VNEWS 1.41


	I was wondering if anyone has had any experience using PVWAVE. I 
recently collected a set of XYZ data points of a small stream near my school
and am tring to make a small contour and surface map. I have collected about
a 100 data points but I am cuurently only using approx. 20 pts to experiment
with. I first made a contour and surface map with SURFER and they resembeled the
small area of terrain that the points were from. I recently discovered PVWAVE
and all the power it has and decided to use the data in hope a making a better
plot. But when I made the PVWAVE plots they did not look any thing like the 
SURFER plots. Now I realize that they may use different computational methods
but I have to look real hard to see any similarities between the two. I have 
resized the array (CONFIG and REBIN? are the commands) would that have any 
great effect other that giving a sharper definition? I am using the point and
click method , should I learn the command lang. ? 

	 I would like to hear your experiences with PVWAVE with geological data
I do also have a little bit of seismic data from the area any suggestions on how
I could use PVWAVE with this.

Oh and two last questions 1)are all the command lang. commands available on the 
point and click method, I was unable to find out how to do things I saw done
with command lang. and 2) has anyone used MATHEMATICA for contour plots or 
geological data in general


Thanks 


Bruce Wappman
Geology Student @ University at Buffalo
v103pye8@ubvms
WAPPMAN@autarch.acsu.buffalo.edu
From: S.J.Morden@newcastle.ac.uk (S.J. Morden)
Newsgroups: sci.geo.geology
Subject: Re: Impact processes Reference
Keywords: impact, crater, shock wave, planets
Date: 13 Nov 92 09:32:01 GMT
Organization: University of Newcastle upon Tyne, UK NE1 7RU

Have a look at H.J. Melosh's book "Impact cratering: a geologic process".
It's rather good.

Simes
s.j.morden@uk.ac.newcastle
From: anachem@bronze.ucs.indiana.edu (mark gilstrap)
Newsgroups: sci.geo.geology
Subject: Re: re clay minerals society address
Date: 12 Nov 92 17:05:20 GMT
Organization: Indiana University

In article <1992Nov12.122711.58392@qut.edu.au> frost@qut.edu.au writes:
>Re: address of clay minerals society
>
>Can any one help me with the address, phone numbers fax nos 
>and email of the clay minerals society?
	
	The Clay Mineral Society
	Patricia Jo Eberi, Mgr.
	Post Office Box 4416
	Boulder, Colorado 80306

	303-444-6405
	303-444-2260 FAX

>Also I need to find similar info for the clay minerals 
>repository at the university of missourri.

	The Society can provide you with the necessary info on the
	repository.
From: William.Rivas%bbs@quake.sylmar.ca.us (William Rivas)
Newsgroups: sci.geo.geology
Subject: Seeking Siesmic Activity Information
Date: 10 Nov 92 02:09:22 GMT
Article-I.D.: quake.1992Nov09.180922.5981
Reply-To: William.Rivas%bbs@quake.sylmar.ca.us (William Rivas)
Distribution: world
Organization: Quake Public Access, San Fernando Valley, CA (818)362-6092
X-Posting-Software: UniBoard 1.10a S/N 210921

To All,
My name is William Rivas, I am currently seeking some information on
siesmic activity located in and around Sollaro, New Mexico. I am trying
to gather any readings or information on any siesmic activity data for
December 1943 through January 1944. Any one who can help me with this
information??? I need to know if someone has access to this data, or
who knows of someone who does. I have a great need for this data. If
you have any hints on where or who to gather this data, please post a
message here.
Thanks So Much!
William Rivas
From: JDONAHOE@ua1vm.ua.edu (JAMES DONAHOE)
Newsgroups: sci.geo.geology
Subject: Re:Tsavorite as a Gemstone
Date: 11 Nov 92 19:22:41 GMT
Article-I.D.: ua1vm.1689CBC21.JDONAHOE
Organization: The University of Alabama, Tuscaloosa

Just a note on the gemstone. About 20 years ago, my grandmother wanted
to replace some stones on a ring with emeralds. The gemologist suggested
she go with tsavorites instead since it was "cheaper" and harder. If the
cost of tsavorites is in the thousands per carat category, I would think
that gemologist did her a favor since I wouldn't think emeralds are worth
that much.
 
 
*****-----*****-----*****-----*****-----*****-----*****-----*****-----*****
JAMES DONAHOE                              E-MAIL:
202 BEVILL BUILDING, GEOLOGY DEPARTMENT      JDONAHOE@UA1VM       (BITNET)
UNIVERSITY OF ALABAMA                        JDONAHOE@UA1VM.UA.EDU  (INTERNET)
TUSCALOOSA, ALABAMA 35487-0338
From: mwj@beta.lanl.gov (William Johnson)
Newsgroups: sci.geo.geology
Subject: A robot named Dante
Summary: Information wanted on robotics work at Mt. Erebus
Keywords: Volcano, sampling, robotics
Date: 7 Nov 92 00:16:46 GMT
Article-I.D.: newshost.1992Nov7.001646.20306
Organization: Los Alamos National Laboratory


I heard today about an experiment aimed at gathering material from the crater
of the extremely active Antarctic volcano, Mt. Erebus, using robotics.  The
sampling robot had the highly appropriate name "Dante" and was to be carried
to the crater by another poetically named robot -- was it "Geryon"?  The
cursory article that I read said that the experiment is on hold until next
year because Dante broke a leg, but didn't say much about what would have
happened if everything had worked.

If any readers can give some concrete information on this work, I'd appreciate
it; there is a chance that it will reach out and touch me professionally some
time between now and when it happens.  Pointers to literature references (not
pop-science rags, but real scientific literature) would be appreciated too.

-- 
Bill Johnson				| My suggestion for an Official
Los Alamos National Laboratory		| Usenet Motto: "If you have nothing
Los Alamos, New Mexico USA		| to say, then come on in, this is the
!cmcl2!lanl!mwj (mwj@lanl.gov)		| place for you, tell us all about it!"
From: gsteckel@vergil.Eng.Sun.COM (Geoff Steckel - Sun BOS Hardware CONTRACTOR)
Newsgroups: sci.geo.geology
Subject: taafite (is it a known gem name?)
Summary: see 'time regarded as a helix of semi-precious stones'
Date: 10 Nov 92 17:50:58 GMT
Organization: Omnivore Technology, Newton, MA (617) 332-9252
NNTP-Posting-Host: vergil.east.sun.com

The science fiction writer Roger Zelazny wrote a short story
'Time Regarded as a Helix of Semi-Precious Stones', which listed
among commonly known names 'taafite'.  I have been unable to find
this in common handbooks of gems & minerals, encyclopedias, etc.
Does anyone know this name or have a suggestion on where to find
it, if it is not a creation of the author?
	thanks,
--
	geoff steckel (gwes@trilobyte.com, gwes@wjh12.harvard.EDU)
Disclaimer: I am not affiliated with Sun Microsystems, despite the From: line.
This posting is entirely the author's responsibility.
From: bh419@cleveland.Freenet.Edu (Ted B Samsel)
Newsgroups: sci.geo.geology
Subject: LANDSAT data prices?
Date: 10 Nov 1992 16:30:19 GMT
Organization: Case Western Reserve University, Cleveland, Ohio (USA)
NNTP-Posting-Host: hela.ins.cwru.edu


  I seem to recall that in the immediate future LANDSAT data will be
going down in price. If this is certain, does anyone have particulars
in regards to this?
  If I have misinterpreted such information, please tell me this also.
  Regards,
wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww
""   Ted Samsel (TBSAMSEL@QVARSA.ER.USGS.GOV)                                ""
""          or  (TBSAMSEL@DG11SVARMD.ER.USGS.GOV)                            ""
||          or  (BH419@CLEVELAND.FREENET.EDU)                                ||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     "Don't you feel more like you do now than you did before?"
wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww
-- 
Ted....
QUIT
www
-- 
Ted....
Xref: sparky sci.geo.geology:2356 sci.astro:11932
From: ddeocamp@pearl.tufts.edu (DANIEL M. DEOCAMPO)
Newsgroups: sci.geo.geology
Subject: Re: Trivia
Date: 8 Nov 92 10:07:00 GMT
Organization: Tufts University - Medford, MA
News-Software: VAX/VMS VNEWS 1.41

In article <92Nov7.140315est.251339-2@descartes.uwaterloo.ca>, ircolman@undergrad.math.uwaterloo.ca (Ian Colman) writes...
> 
>Name the branch of geology that studies fossils.
> 
>I believe it is archaeology, however I would like a confirmation. Please
>e-mail ircolman@descartes.uwaterloo.ca.
>Ian Colman

Paleontology is the broadest discipline which studies fossils.  Many other
disciplines use fossils in the course of their study (sedimentology,
stratigraphy, paleoecology, etc.).  I would assume archaeologists use fossil
humans in their study. 

Daniel Deocampo                          Undergrad (I have an excuse for    
ddeocamp@pearl.tufts.edu                            any silly comments.)
                                         Department of Geology
---------------------|                   Environmental Studies Program
"Be gneiss to me,    |                   Tufts University
 I'm going through   |
 a lot of schist."   |
-----------------------------------------------------------------------
Newsgroups: sci.geo.geology
From: anpilant@mtu.edu (Andrew A. Pilant)
Subject: FRACTAL algorithm for DEM needed
			
Keywords: fractal, dem, topography, surface roughness
Organization: Michigan Technological University
Date: Thu, 5 Nov 1992 21:55:35 GMT


I would like to compute the fractal dimension (D) of a subset of a digital
elevation model (DEM).  I am a bit of a dim bulb, so I don't fully understand
the expressions for computing D that I've encountered so far.

I've seen two primary approaches:
	1) log*log plot of the power spectrum of the DEM
	2) log*log plot of elevation variance versus lag (interpixel spacing)

Unfortunately, each expression I've found in the literature is missing some
key  element (e.g., undefined parameter).

Could someone  send me a cookbook-level reference for computing D for a surface
(2<=D<=3) (as opposed to for a line, e.g., a coastline).  

Please don't be concerned about me using trendy math in an ill-informed manner.
This is just an experiment for a term project.  It was due yesterday, by the way,
so rapid response(s) would be greatly appreciated.

Please send ideas to my address.  MANY THANKS!

Drew Pilant		(anpilant@mtu.edu)

Dept. Geological Engineering, Geology and Geophysics
MTU
Newsgroups: sci.geo.geology
From: stgprao@st.unocal.COM (Richard Ottolini)
Subject: different geophysical method
Organization: Unocal Corporation
Date: Tue, 10 Nov 1992 20:34:38 GMT


I saw a couple papers about piezo-seismic exploration at a recent geophysics
conference.  The source is acoustic, e.g. dynamite, and the sensors are
electromagnetic.  The application was mineral exploration where there
are quartz-rich alteration regions associated with mineralization.
Signals *were* detected with this method, and there were some attempts to
determine the geometry of the quartz-rich regions, but not to the point of
obtaining an image.

This has implications for earthquake seismology too.  There are intriguing
hints EM emissions are associated with quakes and may be precursors.
Someone might be able to adapt the above experiment to better understanding
quake-related phenomena.
Newsgroups: sci.geo.geology
From: naeve@psych.umn.edu (Susan Naeve)
Subject: Tsavorite as a Gemstone
Organization: University of Minnesota
Date: Sun, 8 Nov 1992 05:27:04 GMT

	I am interested in whether tsavorite (a type of green garnet from the Tsavo  
National Park in Kenya) is suitable to be set in a ring to be worn everyday.  I  
would like to know about its hardness and durability - by this I mean its  
resistance to abrasion and fracture.  I am also interested in any information  
about current market value and general availability of cut tsavorite stones.  I  
have dug around in a few standard gemology textbooks, but have found little  
information about tsavorite specifically - only garnets in general.  I love the  
look of one I have seen, but want to know if this would be a durable as well as  
enjoyable purchase.  Any guidance would be very much appreciated - I am not a  
geologist or gemologist, and apologize in advance if this is misplaced in this  
group.   THANKS!   -S. Naeve   (naeve@turtle.psych.umn.edu)
Newsgroups: sci.geo.geology,alt.sci.planetary
From: guy@slustl.slu.edu (Guy Smith)
Subject: Re: role of meteoroids in continental rifting
Organization: Saint Louis University  Saint Louis, MO
Date: Thu, 12 Nov 1992 17:23:11 GMT

In article <1992Nov11.153514.15715@mailer.cc.fsu.edu> cain@geomag.gly.fsu.edu (Joe Cain) writes:
>	This leads me to another question for the net. I have read
>that the interior of the Earth has cooled some 100 degrees (C or K)
>per gigayear over the eons. Does anyone know if this figure means that
>the isotherms have been moving down uniformly, or whether the
>implication is that only given layers have so cooled? If the
>temperatures have changes over the past it might have implications on
>the geochemistry of ancient rocks in ascertaining their origin. 

The temperature *gradient* shouldn't change much, below the boundary
layer, as convective systems tend to stay close to adiabatic. A higher
heat flux could simply be accommodated by an increase in convection
rate or perhaps changes in convective geometry. This doesn't rule out
a uniform cooling of the earth but I can't see that it is required
either.
Newsgroups: sci.geo.geology
Newsgroups: sci.geo.geology
Subject: FRACTAL algorithm for DEM needed
From: anpilant@mtu.edu (Andrew A. Pilant)
Date: 5 Nov 92 19:48:00 +1000

Keywords: fractal, dem, topography, surface roughness
Organization: Michigan Technological University
Date: Thu, 5 Nov 1992 21:55:35 GMT


I would like to compute the fractal dimension (D) of a subset of a digital
elevation model (DEM).  I am a bit of a dim bulb, so I don't fully understand
the expressions for computing D that I've encountered so far.

I've seen two primary approaches:
	1) log*log plot of the power spectrum of the DEM
	2) log*log plot of elevation variance versus lag (interpixel spacing)

Unfortunately, each expression I've found in the literature is missing some
key  element (e.g., undefined parameter).

Could someone  send me a cookbook-level reference for computing D for a surface
(2<=D<=3) (as opposed to for a line, e.g., a coastline).  

Please don't be concerned about me using trendy math in an ill-informed manner.
This is just an experiment for a term project.  It was due yesterday, by the way,
so rapid response(s) would be greatly appreciated.

Please send ideas to my address.  MANY THANKS!

Drew Pilant		(anpilant@mtu.edu)

Dept. Geological Engineering, Geology and Geophysics
MTU
Newsgroups: sci.geo.geology
From: helge.nesteby@iku.sintef.no (Helge Nesteby)
Subject: Sedimentological application
Followup-To: sci.geo.geology
Organization: IKU 
Date: Fri, 13 Nov 1992 12:29:27 GMT


Sedimentological description application

I am looking for a geological application for describing sedimentological
logs on a computer. The application must be able to draw a lithological
column with grain size variation, possibilities to add sedimentological
symbols beside the litholoical and the grain size columns, and editing of
the lithologic patterns and sedimentological symbols 

I will be grateful to any that can give me information about this type of
application. Any information is of interest. Please answers me direct by
E-mail: helge.nesteby@iku.sintef.no


Tank you in advance ...      

Helge              

-------------------------------------------------------------------------------------
name: Helge Nesteby
- adress: IKU   N-7034 Trondheim Norway
- internet: helge.nesteby@iku.sintef.no
- Phone: 47 7 59 11 50
- Fax: 47 7 59 11 02
-----------------------------------------------------------------------------------
From: dddurda@pine.circa.ufl.edu (DURDA)
Newsgroups: sci.geo.geology
Subject: Re: Petosky or Petoskie (Michigan?) fossil coral (Q)
Date: 12 Nov 92 02:49:58 GMT
Reply-To: dddurda@pine.circa.ufl.edu
Organization: Dept. of Astronomy, University of Florida  (astro.ufl.edu)
News-Software: VAX/VMS VNEWS 1.3-4


  "Petoskey stones" are fossil colonial coral fragments which have been
polished into pebbles by the abrasive action of waves and are often found
along the beaches of the Lower Peninsula of Michigan. The stoones get
their name from the fact that they are abundant near the city of Petosky,
in the northwest of the Lower Peninsula. Coral-rich, Middle Devonian
limestones crop out in this region.

  (Please excuse - I am typing this 'on-line' and can't edit typo's on
   previous lines. The correct spelling _is_ "Petoskey", and as far as I
   know, there are no such things as 'stoones'!)

  --Dan

----------------------------------------------
Daniel D. Durda
Dept. of Astronomy, University of Florida
Gainesville, FL
durda@astro.ufl.edu
----------------------------------------------

Newsgroups: sci.geo.geology,alt.sci.planetary
From: cain@geomag.gly.fsu.edu (Joe Cain)
Subject: Re: role of meteoroids in continental rifting
Organization: Florida State University Geology Dept.
Date: Wed, 11 Nov 92 15:35:14 GMT

In article <1992Nov10.181323.28880@unocal.com> stgprao@st.unocal.COM (Richard Ottolini) writes:
>Try some physics.
>By my calculations, a meteor hitting the earth at 7 km per sec is moving 20E9
>faster than a tectonic plate.  Say if there is a 50% conservation of momentum
>(the other 50% of energy converted into heat), then the meteor can move a body
>a billion times heavier than itself, or approximately 2000 times larger in
>radius.  Is that large enough?
>This argument assumes force is evenly transmitted through a plate.  I doubt
>whether that is possble given the low strength of rock.

	No one considers that a meteoroid would have any possible
influence on the actual motion of a plate as is assumed in this
response. The point would be whether such a large impact might
initiate rifting by opening up a path to the mantle at its crater or
otherwise assisting in brittle fracture of the crust perhaps already
under tension. One might conjecture that such possibilities would be
more likely in past eons when the number of large meteoroids were more
prevalent, the mantle hotter, and the crustal material thinner. 

	This leads me to another question for the net. I have read
that the interior of the Earth has cooled some 100 degrees (C or K)
per gigayear over the eons. Does anyone know if this figure means that
the isotherms have been moving down uniformly, or whether the
implication is that only given layers have so cooled? If the
temperatures have changes over the past it might have implications on
the geochemistry of ancient rocks in ascertaining their origin. 
Joseph Cain		cain@geomag.gly.fsu.edu
cain@fsu.bitnet		scri::cain
From: rorem@bert.eecs.uic.edu (Doug Rorem)
Newsgroups: sci.geo.geology
Subject: NASA crustal dynamics proj
Date: 10 Nov 92 04:06:04 GMT
Article-I.D.: bert.1992Nov10.040604.24879
Organization: University of Illinois at Chicago

Hi,

 I hope this is the right newsgroup...  I am trying to find out
information about the NASA Crustal Dynamics Project (CDP). I saw references
to this in a GPS (Global Positioning System) bulletin where
XY positions for reference stations were listed using the NASA CDP
coordinates.  Is this a world-wide or USA only XY coordinate scheme?
Is it based on some type of map projection?  Thanks for any answers..
(email or post, depending on your judgement)

Doug Rorem
University of Illinois at Chicago
rorem@bert.eecs.uic.edu
Newsgroups: sci.geo.geology
From: "\Ian Colman" <ircolman@undergrad.math.uwaterloo.ca>
Subject: Trivia
Organization: University of Waterloo
Date: Sat, 7 Nov 1992 19:03:11 GMT
X-Mailer: ELM [version 2.3 PL11]


I am hoping somebody could help me with the following question:

Name the branch of geology that studies fossils.


I believe it is archaeology, however I would like a confirmation. Please
e-mail ircolman@descartes.uwaterloo.ca.

Thanks in advance.

Ian Colman

Newsgroups: sci.geo.geology
From: anachem@bronze.ucs.indiana.edu (mark gilstrap)
Subject: Re: clay minerals (standards and opinions)
Organization: Indiana University
Date: Tue, 10 Nov 1992 14:57:29 GMT

In article <1992Nov3.080021.57793@qut.edu.au> frost@qut.edu.au writes:
>Re: clays 
>
>Can one purchase standard refernce clay minerals.
>If so where: could any networkers provide me with names,
>addresses, fax nos.
>Are there any clay depositories of reference minerals
>

	The Clay Minerals Repository has what you want to begin with.
	They are located at the University of Missouri, Columbia Mo,
	USA.

	Caution: while their standards are excellent, they are not
	chemically pure minerals. They are rather representative
	samples from various locations. They are in no way up to
	the chemical homogeneity of rock standards from the USGS
	or NIST (used to be the National Bureau of Standards in 
	Washington.).  You get a variety of chunks and they may vary
	from chunk to chunk - certainly from container to container.

	Ten years ago a student here went to great pains to create a
	pure kaolin sample from their KGa. If she succeeeded then I may have
	the world's supply of such a beast - all two grams of it.

	Geologists seldom have any need to worry about such levels of
	homogeneity, and chemists who do, seldom realize the need.
	
	I guess that's why the USGS standard reference material program
	is dying a slow death. Since the retirement of Flanagan there, 
	and all his contemporaries here and elsewhere, it looks like the
	end of good, comparable data is not far away. (Japan however
	does have a new set of standards out.)

	I learned more about sampling the first day on this job than I
	learned in 6 years of Chemistry. Analysts who do not understand
	sampling make some amazingly irrelevant determinations. Analysts
	who do not use standard reference materials matrix matched to 
	sample types, can create wonderfully self-consistent data - that
	none-the-less may not be comparable to any other lab (unless
	they use exactly the same method.) Geological literature is
	full of chemical data without any context wrt method, and
	without any experimental section. Geologists who should know
	more about these issues, in general don't.

	In an age where it is still possible to make a million bucks by
	identifying resources from a passing vehicle and testing the
	quality of a clay by crunching a bit between the teeth, analyti-
	cal chemistry has not been well recognized or appreciated. I
	have one of the few full-blown chemistry labs associated with
	geological sciences. Almost all the others are federal.
	I couldn't find another similar position elsewhere if I had to.
Xref: sparky sci.geo.geology:2361 ca.earthquakes:1319
From: rock@bradley.bradley.edu (Geology Dept.)
Newsgroups: sci.geo.geology
Subject: unix-based animated and static graphics software
Summary: looking for unix softwaew
Keywords: graphics silicates atoms faults plate-motion stereographic-projections
Date: 5 Nov 92 17:25:36 GMT
Article-I.D.: bradley.1992Nov5.172536.26985
Distribution: usa
Organization: Bradley University


 recently received a rockware catalog containing ms-dos and macintosh graphics 
programs which depict 1) mineral structures including silicates (called ATOMS),
2) fault generation (FAult), 3) generation of Schmidt and Wulff nets (STEREO),
4) plate motions (TIME MACHINE EARTH), and others.
i am trying to locate unix-based similare programs which will run on sun or 
or similar workstations so that animated as well as static graphics
can be used to illustrate concepts to undergraduate students at bradley univ.
can anyone help me?
Xref: sparky sci.geo.geology:2309 ca.earthquakes:1303