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Detailed sections from auger holes in the Elizabethtown 1:100,000-scale map sheet, North Carolina

Open-File Report 2011-1115

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Abstract

The Elizabethtown 1:100,000 quadrangle is in the west-central part of the Coastal Plain of southeastern North Carolina. The Coastal Plain, in this region, consists mostly of unlithified sediments that range in age from Late Cretaceous to Holocene. These sediments lie with profound unconformity on complexly deformed metamorphic and igneous rocks similar to rocks found immediately to the west in the Piedmont province. Coastal Plain sediments generally dip gently to the southeast or south and reach a maximum thickness of about 850 feet (ft) in the extreme southeast part of the map area. The gentle southerly and southeasterly dip is disrupted in several areas by faulting. The U.S. Geological Survey recovered one core and augered 196 research test holes in the Elizabethtown 1:100,000 quadrangle to supplement sparse outcrop data in the map area. The recovered sediments were studied and data from these sediments recorded to determine the lithologic characteristics, spatial distribution, and temporal framework of the represented Coastal Plain stratigraphic units. These test holes were critical for accurately determining the distribution of major geologic units and the position of unit boundaries. The detailed descriptions of the subsurface data can be used by geologists, hydrologists, engineers, and community planners to provide a detailed shallow-subsurface stratigraphic framework for the Elizabethtown map region.

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Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Detailed sections from auger holes in the Elizabethtown 1:100,000-scale map sheet, North Carolina
Series title:
Open-File Report
Series number:
2011-1115
Year Published:
2011
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Contributing office(s):
Eastern Geology and Paleoclimate Science Center
Description:
v, 9 p.; Figures; Tables; Appendices
First page:
i
Last page:
286
Number of Pages:
291
Country:
United States
State:
North Carolina
City:
Elizabethtown
Scale:
100000
Online Only (Y/N):
N
Additional Online Files(Y/N):
N