Fault Bluff
{{Infobox mountain
| name=ins
| photo=
| photo_caption=
| country_type=Continent
| country=Antarctica
| region_type =
| region=
| parent= Cook Mountains
| border=
| geology=
| period=
| orogeny=
| length_km= | length_orientation=
| width_km= | width_orientation=
| highest=
| elevation_m=
| elevation_ref=
| coordinates = {{coord|79|18|S|157|40|E|source:GNIS|display=it}}
| coordinates_ref=
| range_coordinates =
| range_coordinates_ref =
| map=Antarctica
| map_caption=
}}
Fault Bluff is a {{convert|2,320|m|-2}} high rock bluff located about {{convert|9|nmi|km}} northeast of Mount Longhurst in the Cook Mountains of Antarctica. The rock bluff was visited in the 1957–58 season by the Darwin Glacier Party of the Commonwealth Trans-Antarctic Expedition, 1956–58. They originated the name which presumably refers to a geological fault at the bluff.{{cite gnis | type = antarid | id = 4794| name = Fault Bluff | accessdate = 2023-09-30}}Stewart, J., 2011. Antarctica: An Encyclopedia, 2nd ed. Jefferson, North Carolina and London, McFarland & Company, Inc. 1771 pp. {{ISBN|978-0-7864-3590-6}}
Geology
Fault Bluff is a paleontologically important outcrop of the Aztec Siltstone that has yielded abundant fossils of Devonian vertebrates, including Bothriolepis and Groenlandaspis (armored placoderm fishes) and scales of an extinct lobe-finned fish. The fossils occur either as thin layers of well preserved, concentrated, bone beds or well-sorted, silt-size, bone mush. The bone beds have yielded complete fish spines and bony plates.Long, J., 2001. Mountains of Madness: A Scientist's Odyssey in Antarctica. Washington, DC, Joseph Henry Press and National Academy Press. 269 pp. {{ISBN|978-0309070775}}. Fault Bluff' is the type locality for the phyllolepid placoderms, Austrophyllolepis quiltyi and Placolepis tingeyi.Young, G.C., and Long, J.A., 2005. Phyllolepid placoderm fish remains from the Devonian Aztec Siltstone, southern Victoria Land, Antarctica. Antarctic Science, 17(3), pp.387-408. This outcrop of the Aztec Siltstone continues along a low ridge associated with Fault Bluff that has the equally important and fossiliferous Fish Hotel vertebrate fossil site at its end. In addition to fossil fishes, fossil lycopod and psilophyte plant remains, including Haplostigma lineare, have been found at both Fault Bluff and Fish Hotel fossil site.McLoughlin, S. and Long, J.A., 1994. New records of Devonian plants from southern Victoria Land, Antarctica. Geological Magazine, 131(1), pp.81-90.
See also
- Mount Gudmundson, standing {{convert|6|nmi|km}} northeast of Fault Bluff