Delaware Geological Survey releases new geologic map of the Smyrna Area

The Delaware Geological Survey (DGS) has published a new geologic map of the Smyrna area titled Geologic Map of the Millington, Clayton, and Smyrna Quadrangles, Delaware.

Geologic Map 24 presents the results of research by Kelvin W. Ramsey and Jaime L. Tomlinson, of the DGS. The map supersedes the surficial geology of DGS Geologic Map No. 5: Geology of the Smyrna-Clayton Area, Delaware by Thomas E. Pickett and Richard N. Benson (1977). This map is the first in a series of new detailed surficial geologic maps of northern Kent and southern New Castle counties planned for publication over the next several years by Delaware Geological Survey.

Geologic Map 24 illustrates and describes the geologic units found at the land surface and in the shallow subsurface of the Smyrna area. It contains detailed descriptions and ages of all units presented on the map as well as a cross section that shows the geology and names of units underlying the units exposed at the land’s surface. The map provides geologic information for use in regulatory land-use decision making, delineation and protection of water resources, and to identify potential sand and gravel resources. When used in conjunction with supporting subsurface geologic information, the map can aid in locating water supplies for public, domestic, agricultural, and industrial use, for mapping groundwater recharge areas, and for protecting groundwater and surface-water resources northern Delaware. The map is part of the Delaware Geological Survey’s ongoing mission to understand geologic and hydrologic systems and to advise, inform, and educate Delawareans about the results of such investigations.

DGS Geologic Map No. 24 is available as a PDF to view online or as a downloadable product from the DGS web page at

For questions and information, contact DGS at, 302-831-2833