Skip to main content
U.S. flag

An official website of the United States government

Ernest Crider

Ernest Crider is a Geologist at the Florence Bascom Geoscience Center.

As a geologic cartographer and GIS specialist for the Florence Bascom Geoscience Center I am responsible for the completion of GIS databases, metadata creation, and associated cartographic products for multiple current and legacy projects.   Most current projects are located on National Park lands (Blue Ridge Parkway) and the Atlantic Coastal Plain; with an additional focus on bedrock geologic mapping in New England.  I came to the U.S. Geological Survey from the Smithsonian National Museum of Natural History where I started in the summer of 1997 as a NSF REU student working on cores from Lake Issyk-Kul in Kyrgyzstan.  My work there included processing core samples for XRD, grain size distribution analysis using a Coulter Counter, wet sieving, and field work.

 

Science and Products

link
Great Lakes Geologic Mapping Task 2

Task 2-Quaternary Geologic Mapping and Subsurface Correlation

The area encompassed by Task 2 includes various regions on the margins of the Great Lakes, with initial focus on: (1) several counties along the east margin of Lake Michigan (Leelanau, Benzie, Manistee, and Mason Counties of Michigan); and (2) Berrien County of southwestern Michigan. The primary objective of Task 2 is to produce a seamless, zoomable geologic framework map geodatabase in GeMS...
By
Florence Bascom Geoscience Center
link

Task 2-Quaternary Geologic Mapping and Subsurface Correlation

The area encompassed by Task 2 includes various regions on the margins of the Great Lakes, with initial focus on: (1) several counties along the east margin of Lake Michigan (Leelanau, Benzie, Manistee, and Mason Counties of Michigan); and (2) Berrien County of southwestern Michigan. The primary objective of Task 2 is to produce a seamless, zoomable geologic framework map geodatabase in GeMS...
Learn More

Surficial geologic map of the Elizabethtown 30' x 60' quadrangle, North Carolina

The Elizabethtown 30' x 60' quadrangle is located in southeastern North Carolina between Fayetteville and Wilmington. Most of the area is flat to gently rolling, although steep slopes occur locally along some of the larger streams. Total relief in the area is slightly over 210 feet (ft), with elevations ranging from slightly less than 10 ft above sea level along the Black River (east of Rowan in t
By
Florence Bascom Geoscience Center

Geologic Map of the Shenandoah National Park Region, Virginia

The geology of the Shenandoah National Park region of Virginia was studied from 1995 to 2008. The focus of the study was the park and surrounding areas to provide the National Park Service with modern geologic data for resource management. Additional geologic data of the adjacent areas are included to provide regional context. The geologic map can be used to support activities such as ecosystem de

Fracture trace map and single-well aquifer test results in a carbonate aquifer in Jefferson County, West Virginia

By
Chesapeake Bay Activities

Fracture trace map and single-well aquifer test results in a carbonate aquifer in Berkeley County, West Virginia

These data contain information on the results of single-well aquifer tests, lineament analysis, and a bedrock geologic map compilation for the low-lying carbonate and shale areas of eastern Berkeley County, West Virginia. Efforts have been initiated by management agencies of Berkeley County in cooperation with the U.S. Geological Survey to further the understanding of the spatial distribution of f
By
Chesapeake Bay Activities

Database for the Geologic Map of the South Boston 30' x 60' Quadrangle, Virginia and North Carolina

The 1:100,000-scale geologic map database of the South Boston 30' x 60' quadrangle, Virginia and North Carolina, provides geologic information for the Piedmont along the I-85 and U.S. Route 58 corridors and in the Roanoke River watershed, which includes the John H. Kerr Reservoir and Lake Gaston. The Raleigh terrane (located on the eastern side of the map) contains Neoproterozoic to early Paleozoi
By
Florence Bascom Geoscience Center

Science and Products