Field Collection for Apatite Fission Track Analysis, Ellsworth Mountains
Hammer, W.R. 1990. Triassic terrestrial vertebrate faunas of Antarc- New vertebrates from the Fremouw formation (Triassic) Beard- tica. In T.N. Taylor and E.L. Taylor (Eds.), Antarctic paleobiology. more Glacier region, Antarctica. Antarctic Journal of the U.S., 21(5), New York: Springer-Verlag. 24-26. Hammer, W.R., J.W. Collinson, and W.J. Ryan, III. 1990. A new Trias- Seeley, H.G. 1894. Researches on the structure, organization and clas- sic vertebrate fauna from Antarctica and its depositional setting. sification of the fossil Reptilia. Part IX, section 1: On the Therosuchia. Antarctic Science, 2(2), 163-167. Philosophical Transactions of the Royal Society of London, series B, 185, Hammer, W.R., W.J. Ryan, J.W. Tamplin, and S.L. DeFauw. 1986. 987-1,018. Field collection for apatite fission track 85°W analysis, Ellsworth Mountains EDMUND STUMP and PAUL C. FITZGERALD Department of Geology Arizona State University Tempe, Arizona 85287-1404 We collected rock samples for fission track analysis in the Ellsworth Mountains during the 1989-1990 austral summer to provide an understanding of the tectonic history of this crustal block. In broader terms, the study will attempt to relate the Figure 2 uplift history of the Ellsworth Mountains to the tectonic evo- lution of West Antarctica. Because the put-in date was delayed, we had to abbreviate the original field plan, which included collections in the Her- ,-Nunatak .690± itage Range (figure 1). We were put in on 21 November 1989 Bastien Hills 5 kilometers west of Mount Gardner in the central Sentinel 79°S Minisa (aCU " Range (figure 2).
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