Environmental Engineering Reference
In-Depth Information
Figure 18.1 Global palaeogeography of the late Permian
Early Triassic, show-
ing the locations and ocean redox conditions indicated by proxy records discussed
in the text. Black symbols
-
anoxia/euxinia, grey symbols
dysoxia or intermit-
¼
¼
tent anoxia, white symbols
oxic conditions. Note the global expansion of
oceanic anoxia/euxinia seen in most proxy records at the PTB. Base map modi
¼
ed
from R. Blakey (
http://cpgeosystems.com/260moll.jpg
).
