SUPPLEMENT TO THE PRELIMINARY STRATIGRAPHIC DATABASE FOR SUBSURFACE SEDIMENTS OF DORCHESTER COUNTY, SOUTH CAROLINA

By Lucy E. Edwards, Gregory S. Gohn, Laurel M. Bybell, Peter G. Chirico, Raymond A. Christopher, Norman O. Frederiksen, David C. Prowell, Jean M. Self-Trail, and Robert E. Weems

U.S. Geological Survey Open-File Report 00-049-B

2000

Drill Hole Database Attribute Table

County_No

Grid _No

Name

State

County

Agency

Year

Use

Latitude

Longitude

TopElev_ft

Depth_ft

GeophyLogs

Core

Base

Paleontol

Geology

DOR-0037

23CC-i01

Clubhouse Crossroads No. 1

SC

Dorchester

USGS

1975

stratigraphy

32.88661

-80.35889

23

2599

suite

continuous

pre-Cretaceous

USGS

USGS

DOR-0052

21BB-m01

Summerville Water Plant

SC

Dorchester

Summerville

1978

well

32.95944

-80.20222

30

2000

suite

none

Cretaceous

USGS

USGS

DOR-0208

24Z-d02

Pregnall No. 1

SC

Dorchester

USGS

1982

stratigraphy

33.15866

-80.47102

85

346

gam, resist, neut

continuous

Paleocene

USGS

USGS

DOR-0211

25Z-b01

St. George No. 1

SC

Dorchester

USGS

1982

hydrostratigraphy

33.15694

-80.52166

78

2067

suite

below 300'

pre-Cretaceous

USGS

USGS

DOR-st1

21BB-s01

Stallsville No. 1

SC

Dorchester

USGS

1980

stratigraphy

32.93914

-80.18433

22

526

gam, elec

at base

Paleocene

USGS

USGS

DOR-st2

21BB-??

Stallsville No. 2

SC

Dorchester

USGS

1980

stratigraphy

32.94810

-80.19427

22

524

gam

below 254'

Eocene

USGS

USGS

The following list describes the content of each column in the attribute table:

County_No -- Unique identifier for each drill hole from the county-based numbering system used by the South Carolina Department of Natural Resources and the USGS. Designations have not been assigned to the Stallsville holes.

Grid_ No -- Unique identifier for each drill hole from the grid-based numbering system used by the South Carolina Department of Natural Resources and the USGS. A designation has not been assigned to the Stallsville No. 2 drill hole.

Name -- Drill-hole names used in this report.

State, County -- All drill holes used for this study are located in Dorchester County, South Carolina.

Agency, Year -- Operating agency and the year that the hole was completed.

Use -- Primary purpose for drilling hole.

Latitude, Longitude -- North latitude and West longitude in decimal degrees.

TopElev_ft -- Elevation of ground surface (in feet) at drill site.

Depth_ft -- Total depth of drill hole in feet.

GeophyLogs -- Indication of the types of geophysical (wireline) logs run in hole. Gam = natural gamma, neut = neutron porosity, elec = electric log, resist = resistivity log, suite = full suite of logs run by USGS or commercial logger.

Core -- Completeness of coring in drill hole.

Base -- Age of sediment/rock at base of drill hole.

Paleontol -- Agency providing paleontologic analysis.

Geology -- Agency providing stratigraphic and lithologic analysis

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Last modified: 11 July 2000