Middle- and late-Holocene dune reactivation in the Nebraska Sand Hills, USA

  • Stokes S
  • Swinehart J
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Abstract

A combination of optical dating of aeolian sand, and radiocarbon dating of palaeosols and interdune sediments, has allowed some refinements to the chronostratigraphy of the Nebraska Sand Hills. Our results directly confirm previous inferences that multiple phases of aeolian deposition, including megabarchan dune reactivation, occurred within the Sand Hills during the middle and late Holocene. Optical dates on stratified aeolian (barchan dune) sediments from two localities provide ages ranging from c. 6 ka to 20 yr) drought.

Author-supplied keywords

  • Aeolian deposition
  • Barchan dune
  • Dune reactivation
  • Holocene
  • Nebraska Sand Hills
  • Optical dating
  • Palaeosols
  • Radiocarbon dating
  • Sand dunes

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Authors

  • Stephen Stokes

  • James B. Swinehart

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