Figure 1 Can. Geol. Survey 1991
Late CambrianSurface current circulation and surface water masses in the Late Cambrian. Paleogeography from Scotese (1986). A, Northern hemispheric winter and southern hemispheric summer. Oceanographic interpretation from: Wilde,P., 1991, Oceanography in the Ordovician, in Advances in Ordovician Geology, C.R. Barnes and S. H. Williams (eds. ) Geological Survey of Canada, Paper 90-9. p. 283-298.


MAP READER
Paleo-Latitude
Paleo-Longitude

You may have to reset corners using values
from X and Y boxes as map location may appear
different in various Browsers
Then move Mouse over graph to read values

X
Y
Min X
Min Y
Max X
Max Y








MAP READER GUIDE

  Positive values: North Latitude and  East Longitude
  Negative values: South Latitude and West Longitude
  Latitude 0 (Equator) will return NAN
  Longitude Precision decreases towards the Poles.

MOLLEWIEDE PROJECTION ASSUMPTIONS

Psi regression
0.588110	0.0155413  -0.0003431 0.0000024480
Left margin regression
9.71110	-0.319661	0.004517	-0.00001905
left regression 80 at zero
-1.19272528	0.0945329	-0.001447727	0.00000985390