Biostratigraphic collections of Devonian fish fossils from Middle Devonian Aztec Siltstone at the top of the Taylor Group (Beacon Supergroup) and sediment studies for a basin analysisEntry ID: K026_1991_1992_NZ_1
Abstract: Using toboggans and sledges, the party travelled 700 kilometres from the Darwin Glacier northwards to the Lashly Mountains to study Taylor Group sedimentary rocks (Beacon Supergroup). The principle objective of this expedition was to make detailed biostratigraphic collections of Devonian fossil fish from the Middle Devonian Aztec Siltstone at the top of the Taylor Group. A second objective was to ... document, where possible, the similarities or differences between the underlying arenaceous Taylor Group formations of the Darwin and Skelton Glacier areas to facilitate correlation and basin analysis. The Aztec Siltstone was measured at Gorgon's Head. Outcrops of Junction Sandstone (basal Taylor Group) and the overlying Hatherton Sandstone east of Gorgon's Head were also studied. From the mouth of the McCleary Glacier north to the Mulock Glacier, the geology of the Cook Mountains was investigated with the measurement of Aztec Siltstone exposures at several localities (Fault Bluff, Mount Gudmundson and the expedition-named sites Fish Hotel and Sliver Ridge) while older sediments were studied further east. After a helicopter crossing of the dangerous Mulock Glacier, sections were studied and measured on Mount Ritchie, Mount Kohn, Alligator Peak, the Warren and Boomerang Ranges, Swartz Nunataks and Escalade Peak, Sowee Ridge, Mount Metschel, Portal Mountain and Mount Crean in the Lashly Mountains. Four outcrops were measured for the first time. A total of 18 Taylor Group outcrops were studied in detail during the expedition. Many new specimens of fossil fish were found as well as extremely large Beaconites burrows in certain sandstones. A total of 750kg of rock was collected from 21 different sites.
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Start Date: 1991-11-15Stop Date: 1992-01-11
Paleo Temporal Coverage
PALEOCLIMATE > LAND RECORDS > MACROFOSSILS
PALEOCLIMATE > LAND RECORDS > MICROFOSSILS
SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > TECTONIC LANDFORMS
SOLID EARTH > ROCKS/MINERALS/CRYSTALS > BEDROCK LITHOLOGY
SOLID EARTH > ROCKS/MINERALS/CRYSTALS > METAMORPHIC ROCKS
SOLID EARTH > TECTONICS > PLATE TECTONICS > STRATIGRAPHIC SEQUENCE
ISO Topic Category
Quality Canterbury Museum holds over 2000 rock specimens from Antarctica. Most of these represent the lithologies of the Beacon Supergroup of rocks and were collected during several NZARP events over a number of seasons in the 1970s and 1980s. The collections were made at a number of sites in the Transantarctic Mountains of Victoria Land. In addition, small collections were made at Cape Adare and Cape ... Hallett.
Collected at the same time were fossils (in excess of 1200 specimens) of a variety of ages, but mostly Devonian (416-359 Ma), Permian (299-251 Ma) and Triassic (251-199 Ma). Represented among the fossils are plants, invertebrates (mostly arthropods, molluscs and brachiopods) and vertebrates (fish).
In the collections Antarctic rock have catalogue numbers with the prefix RA; fossils have the prefix AF. Rock samples and fossils specific to this expedition include:
Rocks RA2221-2338 from Cook Mountains, Boomerang Range and Lashly Mountains (Mt Crean)
Fossils AF1153-1245 Devonian fish and plants (Lashly Mountains; Cook Mountains)
Dr Norton Hiller
Curator of Geology
Rolleston Avenue, Christchurch 8013
Phone: +64 3 366 5000
Direct dial: +64 3 366 9429 ext 820
Fax: +64 3 366 5622
Access Constraints Access to samples follows the specifications of Canterbury Museum.
Data Set Progress
Phone: +64 3 364 2987 ext 3892
Fax: +64 3 364 2769
Email: margaret.bradshaw at canterbury.ac.nz
Department of Geological Sciences University of Canterbury Private Bag 4800
Postal Code: 8140
Country: New Zealand
Role: DIF AUTHOR
Phone: +64 3 358 0200
Fax: +64 3 358 0211
Email: s.gordon at antarcticanz.govt.nz
Antarctica New Zealand Private Bag 4745
Country: New Zealand
Long, J. South Victoria Land fossil discovery has Australian link. ANARE news 71/72: 22-23, 1992.
Long, J. Sharks from the Middle-Late Devonian Aztec Siltstone, southern Victoria Land, Antarctica. Western Australian Museum Records 17(3): 287-308, 1995.
Long, J.A. New groenlandaspidid arthrodire (Pisces; Placodermi) from the middle Devonian Aztec Siltstone, southern Victoria Land, Antarctica. Western Australian Museum records 17(1): 35-41, 1995.
McLoughlin, S. Long, J.A. New records of Devonian plants from southern Victoria Land, Antarctica. Geological magazine 131(1): 81-90, 1994.
Young, G.C. Long, J.A. Ritchie, A. Crosspterygian fishes from the Devonian of Antarctica: systematics, relationships and biogeographic significance. in: Records of the Australian Museum. Sydney South, NSW, Australia: Australian Museum. 1992. pp. [Supplement 14]
Woolfe, K.J. Long, J.A. Bradshaw, M.A. Harmsen, F. Kirkbride, M. Fish-bearing Aztec Siltstone (Devonian) in the Cook Mountains, Antarctica. New Zealand journal of geology and geophysics 33(3): 511-514, 1990.
Bradshaw, M. A. And Harmsen, F.J. 2007. The paleoenvironmental significance of trace fossils in Devonian sediments (Taylor Group), Darwin Mountain to the Dry Valleys, southern Victoria Land. USGS OF-2007-1047 extended abstract 133
Long, J.A., Choo, B., and Young, G.C. A new basal actinopterygian fish from the Middle Devonian Aztec Siltstone of Antarctica. Antarctic Science 20 (4), 393-412, 2008
Creation and Review Dates
DIF Creation Date: 2005-09-22
Last DIF Revision Date: 2009-04-18