Allan Ashworth

President of the International Union for Quaternary Research - INQUA

University Distinguished Professor Emeritus

Research Professor

Department of Geosciences
North Dakota State University
North Dakota 58108-6050
Phone: 701-231-7919
Fax: 701- 231-7149


Allan Ashworth is a researcher and a teacher in paleoecology, stratigraphy and sedimentology. He specializes in insects and their response to climate change.  His current projects are based on fossil assemblages from the Quaternary of North and South America and the Miocene of Antarctica. He is also collaborating with a large group of scientists from around the world to develop the Neotoma Paleoecology Database. His research is featured in the film ‘Ice People’, the NOVA documentary ‘Secrets Beneath The Ice’ and in Science magazine. Fossil discoveries made in Antarctica are featured in articles in National Geographic and in the world press, and are recognized in the New Zealand Geographic Board citation for the Ashworth Glacier.  He is currently the president of the International Union for Quaternary Research (INQUA)

Selected references

Lewis, A.R. and Ashworth, A.C., 2016, An early to middle Miocene record of ice-sheet and landscape evolution from the Friis Hills, Antarctica.Geological Society of America Bulletin, 128 (5-6): 719-738.
Ashworth, A.C. and Nelson, R.E., 2014, The paleoenvironment of the Olympia beds based on fossil beetles from Discovery Park, Seattle, Washington, U.S.A. Quaternary International, 341:243-254.
Lewis, A.R., Marchant, D.R., Ashworth, A.C, Hedenäs, L., Hemming, S.R., Johnson, J.V., Leng, M.L., Machlus, M.L., Newton, A.E., Raine, J.I., Willenbring, J.K., Williams. M., and Wolfe, A.P., 2008, Mid-Miocene Cooling and the Extinction of Tundra in Continental Antarctica, PNAS 105 (31): 10676–10680.
Yansa, C.H. and Ashworth, A.C., 2005, Late Pleistocene palaeoenvironment of the southern Lake Agassiz Basin, U.S.A.  Journal of Quaternary Science, 20 (3), 255-267. 
Ashworth, A.C. and Cantrill, D.J., 2004, Neogene vegetation of the Meyer Desert Formation (Sirius Group) Transantarctic Mountains, Antarctica, Palaeogeography, Palaeoclimatology, Palaeoecology, 213, 65-82. 
Ashworth, A.C. and Thompson, F.C., 2003, A fly in the biogeographic ointment, Nature, 423, 135-136. 
Ashworth, A. C., 2001, Perspectives on  Quaternary Beetles and Climate Change. In (L. Gerhard, W. Harrison, and B. Hanson, eds.), Geological Perspectives of Global Climate Change.  American Association of Petroleum Geologists Studies in Geology 47, pp. 153-168. 
Reiss, R.A., Ashworth, A.C. and Schwert, D.P., 1999, Molecular genetic evidence for the post-Pleistocene divergence of populations of the arctic-alpine ground beetle Amara alpina (Paykull) (Coleoptera: Carabidae), Journal of Biogeography 26(4), 785-794. 
Cong, S. and Ashworth, A.C., 1996,  Palaeoenvironmental interpretation of middle and late Wisconsinan fossil coleopteran assemblages from western Olympic Peninsula, Washington.  Journal of Quaternary Science 11(5): 345-356. 
Ashworth, A.C. and Hoganson, J.W., 1993, The magnitude and rapidity of climate change marking the end of the Pleistocene in the mid-latitudes of South America,   Palaeogeography, Palaeoclimatology, Palaeoecology, 101:263-270. 
Schwert, D.P. and Ashworth, A.C., 1988,  Late Quaternary history of the northern beetle fauna of North America, Memoirs of the Ent. Soc. of Canada, 144: 93-107.