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Title: Geochemical evidence for the hydrology of a Tamarack-peat bog, Brimfield Township, Portage County, Ohio

Peat Bogs and wetlands represent unique environmental settings what are increasingly subjected to anthropogenic stresses involving inputs of water and chemicals. This study used geochemical and hydrologic monitoring to determine the inputs and fates of elements of the Kent-Brimfield bog located in Portage County, Ohio. Based on physical and chemical information collected over one year, a model is proposed here describing the hydrologic connection between a bog and shallow ground water surrounding the bog. The chemical composition of precipitation, soil water and ground water in the bog vicinity were monitored for one year. Field measurements included water levels, pH, Eh, alkalinity and temperature. Trace metal content of the peat, the pore waters, soil water and ground waters were determined by GFAA, ICP and LIC methods. This bog was found to function as part of a perched water table aquifer. Water in the upper 3 m of the bog is found to be chemically similar to precipitation, but modified by reactions involving dissolution of mineral matter and biologic processes. The chemistry of water deeper in the bog (> 3m) resembles shallow ground water surrounding the bog, modified by weathering of underlying geologic materials and sulfate reduction. This similarity, along with groundmore » water elevations within and outside of the bog, supports that shallow ground water interacts with, and helps maintain water levels in the upper surface of the bog. From these results, a model is proposed for the seasonal variations in hydrologic processes operating in the wetland and surrounding basin, and describes how wetlands may change seasonally from being influent to effluent systems.« less
Authors:
;  [1]
  1. (Kent State Univ., OH (United States). Dept. of Geology and Water Resources)
Publication Date:
OSTI Identifier:
5687783
Report Number(s):
CONF-921058--
Journal ID: ISSN 0016-7592; CODEN: GAAPBC
Resource Type:
Conference
Resource Relation:
Journal Name: Geological Society of America, Abstracts with Programs; (United States); Journal Volume: 24:7; Conference: 1992 annual meeting of the Geological Society of America (GSA), Cincinnati, OH (United States), 26-29 Oct 1992
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; 54 ENVIRONMENTAL SCIENCES; OHIO; WETLANDS; HYDROLOGY; AQUIFERS; CHEMICAL COMPOSITION; ENVIRONMENTAL TRANSPORT; FLOW MODELS; GEOCHEMISTRY; GROUND WATER; METALS; MONITORING; PEAT; SEASONAL VARIATIONS; TRACE AMOUNTS; WATER CHEMISTRY; AQUATIC ECOSYSTEMS; CHEMISTRY; DEVELOPED COUNTRIES; ECOSYSTEMS; ELEMENTS; ENERGY SOURCES; FOSSIL FUELS; FUELS; HYDROGEN COMPOUNDS; MASS TRANSFER; MATHEMATICAL MODELS; MATTER; NORTH AMERICA; ORGANIC MATTER; OXYGEN COMPOUNDS; USA; VARIATIONS; WATER 580000* -- Geosciences; 540210 -- Environment, Terrestrial-- Basic Studies-- (1990-)