{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,28]],"date-time":"2025-10-28T00:26:42Z","timestamp":1761611202295,"version":"3.28.0"},"reference-count":30,"publisher":"Geological Society of London","issue":"2","license":[{"start":{"date-parts":[[2007,3,1]],"date-time":"2007-03-01T00:00:00Z","timestamp":1172707200000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-002"}],"content-domain":{"domain":["www.lyellcollection.org"],"crossmark-restriction":true},"short-container-title":["JGS"],"published-print":{"date-parts":[[2007,3]]},"abstract":"<jats:p>\n            The Neogene Meyer Desert Formation, Sirius Group, at Oliver Bluffs in the Transantarctic Mountains, contains a sequence of glacial deposits formed under a wet-based glacial regime. Within this sequence fluvial deposits have yielded fossil plants that, along with evidence from fossil insects, invertebrates and palaeosols, indicate the existence of tundra conditions at 85\u00b0S during the Neogene. Mean annual temperatures of\n            <jats:italic>c<\/jats:italic>\n            . \u221212 \u00b0C are estimated, with short summer seasons with temperatures up to +5 \u00b0C. The current published date for this formation is Pliocene, although this is hotly debated. Reconstructions produced by the TRIFFID and BIOME 4 vegetation models, utilizing a Pliocene climatology derived from the HadAM3 General Circulation Model (running with prescribed boundary conditions from the US Geological Survey PRISM2 dataset), also predict tundra-type vegetation in Antarctica. The consistency of the model outputs with geological evidence demonstrates that a Pliocene age for the Meyer Desert Formation is consistent with proxy environmental reconstructions and numerical model reconstructions for the mid-Pliocene. If so, the East Antarctic Ice Sheet has behaved in a dynamic manner in the recent geological past.\n          <\/jats:p>","DOI":"10.1144\/0016-76492005-191","type":"journal-article","created":{"date-parts":[[2007,2,22]],"date-time":"2007-02-22T23:08:18Z","timestamp":1172185698000},"page":"317-322","update-policy":"http:\/\/dx.doi.org\/10.1144\/crossmark-policy","source":"Crossref","is-referenced-by-count":14,"title":["Tundra environments in the Neogene Sirius Group, Antarctica: evidence from the geological record and coupled atmosphere\u2013vegetation models"],"prefix":"10.1144","volume":"164","author":[{"given":"J.E.","family":"Francis","sequence":"first","affiliation":[{"name":"1School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK (e-mail: j.francis@earth.leeds.ac.uk)"}]},{"given":"A.M.","family":"Haywood","sequence":"additional","affiliation":[{"name":"2Geological Sciences Division, British Antarctic Survey, High Cross, Madingley Road, Cambridge CB3 0ET, UK"},{"name":"5Present address: School of Earth &amp; Environment, University of Leeds, Leeds LS2 9JT, UK"}]},{"given":"A.C.","family":"Ashworth","sequence":"additional","affiliation":[{"name":"3Department of Geosciences, North Dakota State University, Fargo, ND 58105517, USA"}]},{"given":"P.J.","family":"Valdes","sequence":"additional","affiliation":[{"name":"4School of Geographical Sciences, University of Bristol, University Road, Bristol BS8 1SS, UK"}]}],"member":"1881","published-online":{"date-parts":[[2022,6,6]]},"reference":[{"key":"e_1_3_2_1_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0031-0182(04)00359-1"},{"key":"e_1_3_2_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0031-0182(02)00712-5"},{"key":"e_1_3_2_3_1","doi-asserted-by":"publisher","DOI":"10.1093\/mollus\/69.1.89"},{"key":"e_1_3_2_4_1","doi-asserted-by":"publisher","DOI":"10.1038\/423135a"},{"key":"e_1_3_2_5_1","first-page":"493","volume":"7","year":"2000","unstructured":"Askin, R.A. & Raine, J.I. 2000. 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