JISCMail - GEO-TECTONICS Archives

Jose
----- Mensaje original -----
De: Jurgen Kraus <[log in to unmask]>
Fecha: Domingo, Mayo 25, 2008 22:00
Asunto: Orthonet download
A: [log in to unmask]

> So, it all may have been a misunderstanding that was unrelated
> to the
> request of the orthonet copy? A general rant against the overuse
> of
> computers that replace 3-D thinking (while softening brains),
> which
> came across in an unlucky context (or rather totally out of
> context as
> nobody had ever mentioned software packages)? Well, since I
> had
> requests, I make the corpus delicti available for download,
> including
> the instructions on how to use it:
>
> http://idisk.mac.com/jkraus-Public?view=web
>
> It is taken from the textbook by Marshak and Mitra. If there are
> any
> copyright concerns, I will remove it upon request. Because of
> such
> potential concerns, I feel uncomfortable mentioning the name of
> the
> nice Canadian colleague who scanned it for me, but I am very
> grateful
> to him (as well as some other kind responses). Attention: it
> does not
> run on Vista. Sharpen your minds and pencils!
>
> Free-hand sketching is adequate to some extent and in some
> environments (and it is an excellent training), but when one
> has
> actual data, plotting is simply more accurate. The oil and
> gas
> industry is largely controlled by spreadsheet guys and I would
> be in
> severe pain trying to convince management to decide on the drill
> path
> of a $12 MM directional well based on eyeballed, doodled block
> diagrams.
> Suum cuique tribuere!
>
> Jurgen
>
>
>
> On 25-May-08, at 12:07 PM, John F. Dewey wrote:
>
> > Dear Alan,
> >> The point that I and, I believe, that JGR was making was
> simply
> >> that there is a modern tendency to go direct to computer
> graphics
> >> when it is far better, more instructive and revealing to
> first draw
> >> a 3-D diagram, either orthographically or, better, in
> perspective
> >> before one scans it and work on it on one's computer.
> Students are
> >> now losing the ability to think through drawing. When, in
> four
> >> Universities, I taught my plate kinematics course using the
> Wolff
> >> Net, I insisted that students manually complete each exercise
> on
> >> tracing film before they were allowed to use computer
> graphics.
> >> This enabled them to really think through a problem before
> the
> >> (essential because of speed and accuracy) automaton took
> over.
> >> There is nothing like drawing, first rough sketching then
> an
> >> accurate drawing, with a pencil to thrash out a problem. I
> (we) are
> >> not throwing stones at Jurgen but merely making what I (we)
> believe
> >> to be a valid argument that, in geology, computers are
> taking over
> >> thinking. Jurgen is a big boy and can defend himself, as he
> did;
> >> sad when one is not supposed to make any kind of criticism
> that was
> >> not personally directed but at a modern tendency that I (we) abhor.
> >
> > Best wishes,
> > John
> >
> >
> >> Harsh on Jurgen I think.
> >>
> >> As someone who knows both of the distinguisged gentlemen
> involved
> >> in this exchange and also Jurgen I think that the public
> comments
> >> by the two Johns are uncalled for. This is a forum to help
> people
> >> not give them an undesreved public reprimand when they ask
> a
> >> perferctly reasonable question. Ask Paul Williams for a
> reference
> >> on Jurgen's credentials before stones are thrown. Keep up the
> good
> >> work Jurgen don't be put off.
> >>
> >> Alan
> >>
> >> --------------------------------------
> >> Alan Roberts
> >> Managing Director - occasional structural geologist
> >> Badley Geoscience Ltd
> >> From: John F. Dewey [mailto:[log in to unmask]]
> >> To: [log in to unmask]
> >> Sent: Sat, 24 May 2008 20:31:06 +0100
> >> Subject: Re: Orthonet
> >>
> >> >John Ramsay is right. If one cannot draw any 3-D
> >> >diagram, one should not be in structural
> >> >geology, which is a graphic subject that demands
> >> >a 3-D sense and an ability to draw.
> >>
> >> John Dewey
> >>
> >> >Surely any real structural geologist does not
> >> >need a pre-cooked package to compile a 3-D
> >> >diagram? John Ramsay
> >> >
> >> >
> >> >> Message du 22/05/08 19:20
> >> >> De : "Jurgen Kraus" <[log in to unmask]>
> >> >> A : [log in to unmask]
> >> >> Copie à :
> >> >> Objet : Orthonet
> >> >>
> >> >> Excuse multiple postings!
> >> >>
> >> >> Dear all,
> >> >>
> >> >> I was wondering whether one of you has a
> >> >>scanned copy of the ?orthonet?, used to
> >> >>construct block diagrams (or a reference where
> >> >>to find one). Could not find anything on the
> >> >internet.
> >> >>
> >> >> Thanks,
> >> >> Jurgen Kraus
> >> >>
> >> >>
> >> >> Sunwing Energy LTD
> >> >> 101-6th Ave SW
> >> >> Calgary AB
> >> >> CANADA T2P 3P4
> >> >>
> >> >>
> >> >
> >> >
> >> >
> >> >
> >> >--------------
> >>
> >>
> >> --
> >>
> >> -----------------------------------
> >> John F. Dewey FRS, UC Distinguished Emeritus Professor of Geology
> >> Department of Geology
> >> UC Davis
> >> One Shields Avenue
> >> Davis CA 95616
> >>
> >> Telephone Nos:
> >> 530 752 5829 (UC Davis)
> >> 011 44 (0)1865 735525 (home)
> >> 011 44 (0)1865 276792 (University College)
> >> 530 752 0915 (Fax: )
> >>
> >>
> >
> >
> > --
> >
> > -----------------------------------
> > John F. Dewey FRS, UC Distinguished Emeritus Professor of Geology
> > Department of Geology
> > UC Davis
> > One Shields Avenue
> > Davis CA 95616
> >
> > Telephone Nos:
> > 530 752 5829 (UC Davis)
> > 011 44 (0)1865 735525 (home)
> > 011 44 (0)1865 276792 (University College)
> > 530 752 0915 (Fax: )
>
>