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Marion County
  
Radiocarbon Age Determinations on Late Wisconsin Glacial Deposits in and near Marion County

by:
Anthony H. Fleming and Robin F. Rupp

Modified from Fleming and others (1993) and Brown and Laudick (2003)

Site location Stratigraphic Position Age (yr B.P.)
  • American Aggregates Harding Street Quarry
  • sec. 33, T. 15 N., R. 3 E. Maywood quadrangle
Peat bed between top of bedrock and the base of late Wisconsin outwash 22,070+210 (top of peat)

23,340+240 (bottom of peat)
     
  • Eagle Creek Park Confluence of Fishback and Eagle Creeks
  • sec. 28, T. 17 N. , R. 2 E. Zionsville quadrangle
Log in organic bed between paleosol and base of first late Wisconsin till unit 21,030+180
     
  • East edge of Plainfield (Hendricks County), just south of US 40
  • sec. 25, T. 15 N., R. 1 E. Bridgeport quadrangle
Logs and wood fragments in bed of organic silt below T3 sequence 17,650+190

References

Brown, S. E., and Laudick, A. J., eds., 2003, Hydrogeologic framework of Marion County, Indiana — a digital atlas illustrating hydrogeologic terrain and sequence: Indiana Geological Survey Open-File Study 00-14, CD-ROM.

Fleming, A. H., Brown, S. E., and Ferguson, V. R., 1993, Hydrogeologic framework of Marion County, Indiana: Indiana Geological Survey Open-File Study 93-05, 67 p.



 
 
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