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Map Database for Surficial Materials in the Conterminous United States

Data Series 425

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Abstract

The Earth's bedrock is overlain in many places by a loosely compacted and mostly unconsolidated blanket of sediments in which soils commonly are developed. These sediments generally were eroded from underlying rock, and then were transported and deposited. In places, they exceed 1000 ft (330 m) in thickness. Where the sediment blanket is absent, bedrock is either exposed or has been weathered to produce a residual soil. For the conterminous United States, a map by Soller and Reheis (2004, scale 1:5,000,000; http://pubs.usgs.gov/of/2003/of03-275/) shows these sediments and the weathered, residual material; for ease of discussion, these are referred to as 'surficial materials'. That map was produced as a PDF file, from an Adobe Illustrator-formatted version of the provisional GIS database. The provisional GIS files were further processed without modifying the content of the published map, and are here published.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Map Database for Surficial Materials in the Conterminous United States
Series title:
Data Series
Series number:
425
Edition:
Version 1.0
Year Published:
2009
Language:
ENGLISH
Publisher:
U.S. Geological Survey
Contributing office(s):
Eastern Earth Surface Processes
Description:
Report: 12 p.; ReadMe; Metadata; GIS Data
Scale:
5000000
Online Only (Y/N):
Y
Additional Online Files(Y/N):
Y