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Site content related to keyword: "Greenwood"

Groundwater Station: DGS Well Nc13-03

DGS Well Nc13-03

Station Type: 
Groundwater
Period of Record: 
1970 to present
Frequency: 
Quarterly
Map County: 
Sussex County
Map Location: 
38.825698, -75.615997

Meteorological Station: Greenwood

Greenwood Meterological Station

Station Type: 
Meteorological
Period of Record: 
1986 to present
Frequency: 
Monthly
Map County: 
Sussex County
Map Location: 
38.80706,-75.59132

RI23 Cretaceous and Tertiary Section, Deep Test Well, Greenwood, Delaware

RI23 Cretaceous and Tertiary Section, Deep Test Well, Greenwood, Delaware

Analyses of drillers' and geophysical logs, cuttings, and 29 core samples from well Nc13-3 near Greenwood, Sussex County, Delaware indicate that the 1500-foot section penetrated by the drill can be divided into seven rock-stratigraphic units: Matawan Formation, Monmouth Formation, unit A, Piney Point Formation, Chesapeake Group (undifferentiated), Staytonville unit, and the Columbia Formation. The rock units are identified on the basis of texture, mineralogy, color, and interpretation of electric and gamma-ray logs. The oldest rocks penetrated are Upper Cretaceous; Tertiary and Quaternary rocks were also encountered. Correlations of the units encountered in the Greenwood test well with subsurface formations in adjacent parts of the Coastal Plain are explored utilizing lithologies, ages, positions in the stratigraphic column, and geophysical characteristics as criteria. Major time boundaries (Cretaceous-Tertiary; Early-Late Paleocene; Paleocene-Eocene; and Eocene-Miocene) are established by a preliminary study of mainly planktonic foraminifera. The Miocene-Pleistocene boundary was determined on changes in lithology across the unconformable contact.