DRASTIC Hydrogeologic Settings Modified for Fractured Till: Part 2. Field Observations
Weatherington-Rice, Julie; Christy, Ann D.; Angle, Michael P.; Gehring, Richard; Aller, Linda (2006-04)
Developed as a companion paper to "DRASTIC Hydrogeologic Settings Modified for Fractured Till: Part 1. Theory," twenty-one field sites around glaciated Ohio were visited to determine if fractures were present in the soils ...
Field Workshops on Subsurface Fractures in Glacial Till and Their Environmental Implications: An Educational Experience for Professionals and Decision-makers
Christy, Ann D.; Weatherington-Rice, Julie (2000-06)
This paper documents the history of the Ohio Fracture Flow Working Group and describes their conceptualization, planning, coordination, and implementation of a unique outdoor field workshop on joints and fractures in glacial ...
The Use of Test Pits to Investigate Subsurface Fracturing and Glacial Stratigraphy in Tills and Other Unconsolidated Materials
Christy, Ann D.; McFarland, Louis A.; Carey, Duane (2000-06)
Joints and fractures, common in Ohio glacial tills, often influence shallow ground water flow paths and rates. Environmental site investigations in glacial till and lacustrine sediments should include determination of the ...
Properties of the Fractured Glacial Till at the Madison County, Ohio, Field Workshop Pit Site
Fausey, Norman R.; Hall, George F.; Bigham, Jerry M.; Allred, Barry J.; Christy, Ann D. (2000-06)
Water and contaminants obviously do move through the so-called impermeable glacial tills in Ohio. This study was conducted to illustrate the extensive presence of fractures in the till and to quantify the differences in ...
Fractured Tills, Ohio's Ground Water Resources, and Public Policy
Weatherington-Rice, Julie; Hottman, Ava; Murphy, Earl Finbar; Christy, Ann D.; Angle, Michael P. (2006-04)
The public health of all Ohioans is dependent on land use decisions that preserve the quality of Ohio's water resources. If a potentially polluting site is located over fractured glacial tills, those fractures could hasten ...
Ohio's Fractured Environment: Introduction to the Ohio Journal of Science's Special Issue on Fractures in Ohio's Glacial Tills
Weatherington-Rice, Julie; Christy, Ann D.; Forsyth, Jane L. (2000-06)
This paper describes the importance of subsurface fractures in Ohio glacial tills and provides a historical perspective on fracture research and educational efforts in Ohio. It also serves as an introduction to and overview ...
Root Growth, Calcite Precipitation, and Gas and Water Movement in Fractures and Macropores: A Review with Field Observations
McMahon, Margaret J.; Christy, Ann D. (2000-06)
Recent research on the presence and dynamic nature of fractures and soil macropores has generated interest in their impact on root growth in minimally disturbed soils due to no-till or reduced tillage farming practices. ...
Use of Soil Texture Analysis to Predict Subsurface Fracturing in Glacial Tills and Other Unconsolidated Materials
Kim, Eun Kyoung; Christy, Ann D. (2006-04)
Predicting the occurrence and development of fractures is difficult because fracturing in glacial tills and other unconsolidated materials has been observed across many geographic areas, climates, land uses, soil types, ...
Fractured Glacial Till
Christy, Ann D. (2006-04)
DRASTIC Hydrogeologic Settings Modified for Fractured Till: Part 1. Theory
Weatherington-Rice, Julie; Christy, Ann D.; Angle, Michael P.; Aller, Linda (2006-04)
The ground water vulnerability assessment model, DRASTIC, has been modified to better evaluate the effect of fractured till. In the mid-1980s, the Ohio Department of Natural Resources (ODNR) Division of Water began statewide, ...