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Environmental history of a closed-basin lake in the US Great Plains: Diatom response to variations in groundwater flow regimes over the last 8500 cal. yr BP

Hobbs, William O ; Fritz, Sherilyn C ; Stone, Jeffery R ; Donovan, Joseph J ; Grimm, Eric C ; Almendinger, James E

The Holocene, December 2011, Vol.21(8), pp.1203-1216 [Peer Reviewed Journal]

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  • Title:
    Environmental history of a closed-basin lake in the US Great Plains: Diatom response to variations in groundwater flow regimes over the last 8500 cal. yr BP
  • Author: Hobbs, William O ; Fritz, Sherilyn C ; Stone, Jeffery R ; Donovan, Joseph J ; Grimm, Eric C ; Almendinger, James E
  • Description: Sediment records from closed-basin lakes in the Northern Great Plains (NGP) of North America have contributed significantly to our understanding of regional paleoclimatology. A high-resolution (near decadal) fossil diatom record from Kettle Lake, ND, USA that spans the last 8500 cal. yr BP is interpreted in concert with percent abundance of aragonite in the sediment as an independent proxy of groundwater flow to the lake (and thus lake water level). Kettle Lake has been relatively fresh for the majority of the Holocene, likely because of the coarse substrata and a strong connection to the underlying aquifer. Interpretation of diatom assemblages in four groups indicative of low to high groundwater flow, based on the percent of aragonite in sediments, allow interpretations of arid periods (and probable meromictic lake conditions) that could not be detected based on diatom-based salinity reconstructions alone. At the centennial–millennial scale, the diatom record suggests humid/wet...
  • Is Part Of: The Holocene, December 2011, Vol.21(8), pp.1203-1216
  • Identifier: ISSN: 0959-6836 ; E-ISSN: 1477-0911 ; DOI: 10.1177/0959683611405242
  • Subjects: Closed-Basin Lake ; Diatom ; Groundwater Flow ; Northern Great Plains ; Paleoclimate ; Salinity ; Geology
  • Language: English
  • Source: Sage Journals (Sage Publications)
    SAGE HSS (Sage Publications)
    SAGE Urban Studies (Sage Publications)
    SAGE Journals (Sage Publications)

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