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Wilton natural wetland (Wisconsin)

Monroe County, Wisconsin, United States

Other media

Type
Other medium

Wilton wetland complex, Kickapoo River floodplain, unglaciated region of Wisconsin: alluvium less than 5 m thick on Cambrian sandstone (87Sr/86Sr 0.71283), bluffs capped by Ordovician carbonates (0.70906). Regional discharge area with strong upward gradients. Coordinates of the village of Wilton, indicative. Sedge meadow, alder shrub-carr (site W1) and riparian forest (site W2) on 0.1 to 1 m of peat; fed mainly by ground water, recent rain does not reach below 0.30 m.

87Sr/86Sr isotope ratio, no unit Values of the same system

Standard : NIST SRM 987

ValueRangenMineral or matrixSource
0.71026 / 0.71087pore water (mini-piezometers and lysimeters, 0 to 1 m)
W1 and W2 profiles, September 1992 (δ87Sr 0.00 to +0.86 ‰): strontium becomes more radiogenic towards the surface, where the peat releases iron and promotes weathering of radiogenic ferromagnesian minerals.
Hunt et al. (1998), Using stable isotopes of water and strontium to investigate the hydro…
0.71368 ± 0.001170.71285 / 0.71452peat leachate (HNO3)
Mean and standard deviation recalculated from 2 values. Surface peat of W1 (0.71450) and W2 (0.71285), Table 2.
Hunt et al. (1998), Using stable isotopes of water and strontium to investigate the hydro…

δ18O in ‰ (per mil) Values of the same system

Standard : V-SMOW

ValueRangenMineral or matrixSource
−9.5 / −8.9 ‰deep ground water
Deep ground water (3 to 7 m wells), from -9.5 to -8.9 ‰ depending on the site, natural or constructed; not evaporated, on the local meteoric water line (δD = 8.4 δ18O + 15.3).
Hunt et al. (1998), Using stable isotopes of water and strontium to investigate the hydro…
−5.7 ‰bulk rain
Recent growing-season rain (value used by the authors for mixing; three bulk rain samples from 1992). Snow is lighter and more variable.
Hunt et al. (1998), Using stable isotopes of water and strontium to investigate the hydro…

Deposits of the same type

Cite this page

IsoFind Atlas (2026). Wilton natural wetland (Wisconsin), isotope signatures. https://www.isofind.tech/isotopes/en/sites/zone-humide-naturelle-de-wilton-wisconsin/ (accessed 2026-10-13).

@misc{isofind2026wiltonnaturalwetlandwisconsin,
  title = {Wilton natural wetland (Wisconsin), isotope signatures},
  author = {{IsoFind Atlas}},
  year = {2026},
  url = {https://www.isofind.tech/isotopes/en/sites/zone-humide-naturelle-de-wilton-wisconsin/},
  note = {Accessed 2026-10-13}
}

Updated : 2026-10-13