The Journal of Geology, Vol. 34, No. 7, Part 1 (Oct. - Nov., 1926), pp. 612-622 (11 pages) The Gunnison tillite was first described in a paper presented by the present authors at the 1924 December ...
IN an attempt to add detail to the established picture of glaciation in the southern hemisphere during the Late Palaeozoic, we have studied tillites and associated rocks in Antarctica, Africa, South ...
On a geological field trip to Quincy, Harvard scientist Francis Macdonald discovered a 582-million-year-old tillite, a type of sedimentary rock. The rock is on display at the Harvard Museum of Natural ...
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