The current landscapes were finally remodelled into their present forms during the last glaciation, which ended some 10,000 years ago.
This allochthonous tillite is no less indicative of contemporary glaciation.
The next five chapters of the book look into links between climate and orbital change, and then come three on glaciation.
In the course of several glaciation episodes, abundant rainfall submerged the various landforms and gave origin to a massive lake.
As already noted, low-latitude glaciation implies widespread refrigeration and so increases confidence in correlating tillites that otherwise need not be considered as coeval.
Any model attempting to account for the cause, global extent, and duration of glaciation must be consistent with the boundary conditions imposed by these data.
The text in each contribution follows a broadly similar structure, describing the evidence for glaciation from oldest to youngest.
This simple model may be an adequate explanation of the vexing relationship between the onset of glaciations and apparently closely synchronous episodes of explosive volcanism.
