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This collection (known internally at Maryland Geological Survey as Component 9) consists of 1,474 black-and-white aerial photographs (1,472 unique frames plus 2 duplicates) plus 2 index maps which serve as a finding aid for the photographs in the two sub-components of this collection -- DC Collection 1 and DC Collection 2. The photographs are 9 in. by 9 in. in size and cover Washington, DC and vicinity (including portions of Maryland and Virginia). The counties in Maryland covered by these aerial photographs are Anne Arundel, Howard, Montgomery, and Prince George's Counties. No date is printed on these photographs; however, based on features shown in the photographs, Maryland Geological Survey (MGS) estimates...
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This collection (known internally at Maryland Geological Survey as Component 8) consists of 211 infrared, 9 in. by 9 in. aerial photographs (211 unique frames) flown on a 7.5-minute U.S. Geological Survey (USGS) quadrangle basis. The photographs date from 1988-1989 and were flown or otherwise acquired by the USGS National Aerial Photograph Program (NAPP). The Maryland counties covered by these photographs include Allegany, Anne Arundel, Calvert, Cecil, Charles, Dorchester, Kent, Prince George’s, Queen Anne’s, Somerset, St. Mary’s, Talbot, Washington, and Worcester Counties. The scale of these photographs is not printed on the photographs; however, Maryland Geological Survey (MGS) calculates the scale to be approximately...
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X-rays and xeroradiographs of marine and estuarine sediment cores collected in Maryland, taken prior to core extrusion. Cores, generally obtained using gravity or box coring equipment, are usually 1-2 m long. This collection has not yet been fully inventoried or cataloged. Need to coordinate cores and all data derived from cores; need to determine best way to store x-rays to preserve them.
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This collection (known internally at Maryland Geological Survey as Component 6) consists of 214 high-altitude, black-and-white aerial photographs (210 unique records plus 4 duplicates). The photographs date from 1980-1983 and were primarily flown or acquired by the U.S. Geological Survey (USGS). The photographs cover portions of Maryland, Pennsylvania, Virginia, and West Virginia. The counties in Maryland covered by these photographs include Anne Arundel, Baltimore, Carroll, Cecil, Frederick, Harford, Howard, Montgomery, Prince George's, Queen Anne's, and Washington Counties. Although not printed on the photographs, MGS estimates that the scale of these aerial photographs is approximately 1:80,000. These photographs...
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Rolls of seismic profiles obtained from the Atlantic Ocean and Chesapeake Bay as part of projects funded by the U.S. Minerals Management Service (MMS) and the U.S. Environmental Protection Agency (EPA), respectively. Rolls are either original thermal printer paper or photographic copies. In addition to the specified uses of the collection, another possible use is sand/gravel evaluation. This collection has not yet been fully inventoried or cataloged.
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