Publication Abstracts

Mann and Peteet 1994

Mann, D.H., and D.M. Peteet, 1994: Extent and timing of the Last Glacial Maximum in southwestern Alaska. Quat. Res., 42, 136-148, doi:10.1006/qres.1994.1063.

A glacier complex composed of confluent alpine glaciers, island ice caps, and piedmont lobes covered much of the Alaska Peninsula and Kodiak Island during the last glacial maximum (LGM). Because this glacier complex formed the southeastern border of Beringia, its dynamics may have been important in the timing and feasibility of the northwest coast route for human migration into lower-latitude North America. Radiocarbon dates from stratigrapic sections on Kodiak Island and in the Bristol Bay lowlands bracket the LGM in southwestern Alaska between 23000 and 14700 years BO. Reconstruction of ice thickness based on glacier trimlines, moraines, and calculations of basal-shear stress depict the Alaska Peninsula Glacier Complex flowing to the outer esge of the continental shelf in the Gulf of Alaska. Equlibrium-line altitudes (ELAs) were 300 to 700 m lower than today and approached sea level on the southwestern Alaska Peninsula. In northeastern areas were ELA were higher, bedrock topography largely controlled ice flow except where ice saddles bridged straits and inlets.

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BibTeX Citation

  author={Mann, D. H. and Peteet, D. M.},
  title={Extent and timing of the Last Glacial Maximum in southwestern Alaska},
  journal={Quat. Res.},

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RIS Citation

ID  - ma03300x
AU  - Mann, D. H.
AU  - Peteet, D. M.
PY  - 1994
TI  - Extent and timing of the Last Glacial Maximum in southwestern Alaska
JA  - Quat. Res.
VL  - 42
SP  - 136
EP  - 148
DO  - 10.1006/qres.1994.1063
ER  -

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