The erosion of carbonate stone that is due, in part, to acidic deposition is illustrated by the above photograph of carved features on the base of a column on the DAR Memorial Continental Hall, Washington, DC. The erosion process has caused rounding of the carving and a roughening of the stone surface. The stone is Vermont marble, similar to that used in the experiments described by Baedecker and Reddy in this issue. (Photo by Elaine McGee, U.S. Geological Survey).

THE EROSION OF CARBONATE STONE BY ACID RAIN:

Laboratory and Field Investigations

By Philip A. Baedecker and Michael Reddy

Contents

• Introduction
• Theory
• Field Investigation of Acidic Deposition Effects on Limestone and Marble
• Laboratory Run-Off Experiments
• Results and Discussion
• Summary
• Acknowledgment
• Literature Cited