Re: KRS book: Geology

Eric Stevens wrote: ui0er1haaqgjv65jvqcrj1nb8cf7v5pr74@xxxxxxx,
"Peter Alaca" wrote:
Eric Stevens wrote: 

Please - please - read the book if you are you are going to
continue consider sounding off.
Ojakangas plotted six different types of greywacke on his
particular triangle diagram and almost certainly examined
many more specimens he did not consider worth plotting.


That would be a very unscientific procedure,
since a (triangle) scatter diagram is not only
meant to show similarities, but also differences.
I am sure Ojakangas, if he is a serious scientistis,
would not very happy with your comment above.


I understand him to be looking for similarities. When examining
samples widly different from that of the KRS I would expect he would
discard them from further consideration. He was looking for, and
plotting, samples which were similar.


Why plotting similar samples?
A triangle scattergram is used to show the relative
composition of samples based on three elements.
You feed the program with all relevant data and look
for clustering and _differences_.
You don't feed it with similar samples. If Ojakangas
did that, then there is every reason to distrust him.

--
º°º°º°º < Peter Alaca > º°º°º°º°º°º°º°º°º°º°º°º°º°º°º°º°º°º°


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Relevant Pages

  • Re: KRS book: Geology
    ... Ojakangas plotted six different types of greywacke on his particular triangle diagram and almost certainly examined many more specimens he did not consider worth plotting. ... I have two computers with Matrox and they both do the same thing ...
    (sci.archaeology)
  • Re: KRS book: Geology
    ... Ojakangas plotted six different types of greywacke on his particular triangle diagram and almost certainly examined many more specimens he did not consider worth plotting. ... samples widly different from that of the KRS I would expect he would discard them from further consideration. ...
    (sci.archaeology)
  • Re: KRS book: Geology
    ... insistence that Ojakangas should have shown more data points on his triangle diagram than he did. ... I'm quite happy to accept that he showed the coordinates for the composition of the KRS and those North American Greywackes of a composition closest to that of the KRS. ... the Animikie basin), then it is his duty as a scientist ...
    (sci.archaeology)
  • Re: KRS book: Geology
    ... your insistence that Ojakangas should have shown more data points on his triangle diagram than he did. ... I'm quite happy to accept that he showed the coordinates for the composition of the KRS and those North American Greywackes of a composition closest to that of the KRS. ... "Ojakangas plotted six different types of greywacke ...
    (sci.archaeology)
  • Re: KRS book: Geology
    ... your insistence that Ojakangas should have shown more data points on his triangle diagram than he did. ... I'm quite happy to accept that he showed the coordinates for the composition of the KRS and those North American Greywackes of a composition closest to that of the KRS. ... the local greywacke be done not by Ojakangas but by his readers. ...
    (sci.archaeology)