At the edge of the laurentide ice sheet: Stratigraphy and chronology of glacial deposits in central Indiana

Henry M. Loope, José Luis Antinao, G. William Monaghan, Robert J. Autio, B. Brandon Curry, David Aaron Grimley, Sebastien Huot, Thomas V. Lowell, Thomas A. Nash

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

This field guide provides an updated synthesis of the stratigraphy and chronology of glacial deposits in central Indiana near the southern limit of glaciation in the midcontinent. Central Indiana contains evidence of multiple glaciations-deposits from the last two glaciations (Oxygen Isotope Stages [OIS] 2 [Wisconsin Episode] and 6 [Illinois Episode]) have been the focus of recent stratigraphic and chronologic investigation. New radiocarbon and optically stimulated luminescence (OSL) dating from outcrop and core has refined the timing of OIS 2 and OIS 6 ice sheet advances, outwash/slackwater aggradation, glacial lake formation, and eolian activity. Radiocarbon ages within or below late Wisconsin till from three sites within 5 km (3 mi) of the late Wisconsin maximum limit indicate an age of 24.0 k cal yr B.P. for maximum OIS 2 ice sheet extent in central Indiana, consistent with chronology from Illinois and Ohio. A subsequent >50 km (31 mi) readvance (21.6 k cal yr B.P.) across central Indiana came within 10 km (6 mi) of the maximum limit and in the western part of the field-trip area, terminated in glacial Lake Eminence. The start of outwash aggradation and associated slackwater sedimentation in the West Fork White River valley and tributaries began ca. 27 k cal yr B.P. and continued until ca. 20.5 k cal yr B.P., representing the timing of ice sheet advance into and out of the paleo-White River drainage basin. Ice sheet advance and retreat rates average ~40 m/yr before and after the global Last Glacial Maximum (ca. 26-21 k cal yr B.P.) when ice was within ~50 km of the late Wisconsin maximum. OSL dating of pre-Wisconsin outwash and glaciolacustrine sediment return ages between ca. 218 and 127 ka, confirming deposition during OIS 6. These ages document spatially complex sedimentation in bedrock valleys beyond the Wisconsin limit.

Original languageEnglish (US)
Title of host publicationGSA Field Guides
PublisherGeological Society of America
Pages245-258
Number of pages14
ISBN (Electronic)9780813756516
DOIs
StatePublished - Dec 10 2018

Publication series

NameGSA Field Guides
Volume51

Fingerprint

Laurentide Ice Sheet
glacial deposit
chronology
stratigraphy
oxygen isotope
ice sheet
outwash
glaciation
luminescence dating
glacial lake
aggradation
sedimentation
glaciolacustrine deposit
valley
eolian process
Last Glacial Maximum
river
drainage basin
tributary
bedrock

ASJC Scopus subject areas

  • Geology
  • Earth-Surface Processes
  • Stratigraphy
  • Palaeontology

Cite this

Loope, H. M., Antinao, J. L., William Monaghan, G., Autio, R. J., Curry, B. B., Grimley, D. A., ... Nash, T. A. (2018). At the edge of the laurentide ice sheet: Stratigraphy and chronology of glacial deposits in central Indiana. In GSA Field Guides (pp. 245-258). (GSA Field Guides; Vol. 51). Geological Society of America. https://doi.org/10.1130/2018.0051(11)

At the edge of the laurentide ice sheet : Stratigraphy and chronology of glacial deposits in central Indiana. / Loope, Henry M.; Antinao, José Luis; William Monaghan, G.; Autio, Robert J.; Curry, B. Brandon; Grimley, David Aaron; Huot, Sebastien; Lowell, Thomas V.; Nash, Thomas A.

GSA Field Guides. Geological Society of America, 2018. p. 245-258 (GSA Field Guides; Vol. 51).

Research output: Chapter in Book/Report/Conference proceedingChapter

Loope, HM, Antinao, JL, William Monaghan, G, Autio, RJ, Curry, BB, Grimley, DA, Huot, S, Lowell, TV & Nash, TA 2018, At the edge of the laurentide ice sheet: Stratigraphy and chronology of glacial deposits in central Indiana. in GSA Field Guides. GSA Field Guides, vol. 51, Geological Society of America, pp. 245-258. https://doi.org/10.1130/2018.0051(11)
Loope HM, Antinao JL, William Monaghan G, Autio RJ, Curry BB, Grimley DA et al. At the edge of the laurentide ice sheet: Stratigraphy and chronology of glacial deposits in central Indiana. In GSA Field Guides. Geological Society of America. 2018. p. 245-258. (GSA Field Guides). https://doi.org/10.1130/2018.0051(11)
Loope, Henry M. ; Antinao, José Luis ; William Monaghan, G. ; Autio, Robert J. ; Curry, B. Brandon ; Grimley, David Aaron ; Huot, Sebastien ; Lowell, Thomas V. ; Nash, Thomas A. / At the edge of the laurentide ice sheet : Stratigraphy and chronology of glacial deposits in central Indiana. GSA Field Guides. Geological Society of America, 2018. pp. 245-258 (GSA Field Guides).
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