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Argentina projection

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#1
david17tym

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Hello all,

I have a generalised 500k index map of the Neuquen Region of Argentina showing three reference grids:

Geographic
Gauss Kruger
unknown measured grid

I also have a number of detailed 25k maps which I need to georeference and only feature the unknown measured grid

This grid's origin is near a town called Plaza Huincul and my only other clue is that they're all oil industry products

Does anyone have an idea what this grid is or maybe has it's Geographic or Gauss Kruger origin?

Any ideas would be appreciated,
Dave

#2
Nick H

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I also have a number of detailed 25k maps which I need to georeference and only feature the unknown measured grid ... Does anyone have an idea what this grid is or maybe has it's Geographic or Gauss Kruger origin?

Hi Dave, as a last resort it's probably going to be a matter of trial-and-error. If you can get a couple of projected coordinates for known points from the 1:25,000 maps and then find the same points in Google Earth and note their lat/lon coordinates at least you'll have something to work with. Then it will be a question of working through candidate projections with a coordinate converter.

Post a couple of the projected coordinates and the lat/lon coordinates for the same points anyway.

Regards, N.
Caversham, Reading, England.

#3
david17tym

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Thanks for your suggestion Nick,
But on the scans that I've been given, the topographic detail has been 'burned' away.
All I'm left with is the grid and seismic survey locations.
So figuring out the origin of the grid is the key.
Cheers anyhow,
Dave

#4
Martin Gamache

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I believe it is Gauss Kruger but the Argentina entry here might help shed some light: http://www.asprs.org/resources/grids/

#5
david17tym

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Thanks Martin,
A really useful resource.
Cheers,
Dave




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