Karst in the United States: A digital map compilation and database

Open-File Report 2014-1156
By:  and 

Links

Abstract

This report describes new digital maps delineating areas of the United States, including Puerto Rico and the U.S. Virgin Islands, having karst or the potential for development of karst and pseudokarst. These maps show areas underlain by soluble rocks and also by volcanic rocks, sedimentary deposits, and permafrost that have potential for karst or pseudokarst development. All 50 States contain rocks with potential for karst development, and about 18 percent of their area is underlain by soluble rocks having karst or the potential for development of karst features. The areas of soluble rocks shown are based primarily on selection from State geologic maps of rock units containing significant amounts of carbonate or evaporite minerals. Areas underlain by soluble rocks are further classified by general climate setting, degree of induration, and degree of exposure. Areas having potential for volcanic pseudokarst are those underlain chiefly by basaltic-flow rocks no older than Miocene in age. Areas with potential for pseudokarst features in sedimentary rocks are in relatively unconsolidated rocks from which pseudokarst features, such as piping caves, have been reported. Areas having potential for development of thermokarst features, mapped exclusively in Alaska, contain permafrost in relatively thick surficial deposits containing ground ice. This report includes a GIS database with links from the map unit polygons to online geologic unit descriptions.

Study Area

Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Karst in the United States: A digital map compilation and database
Series title Open-File Report
Series number 2014-1156
DOI 10.3133/ofr20141156
Year Published 2014
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Eastern Geology and Paleoclimate Science Center, Florence Bascom Geoscience Center
Description Report: iv, 23 p.; 6 Figures; Downloads Directory
Country United States
Online Only (Y/N) Y
Google Analytic Metrics Metrics page