Summary for Field Activity Number 1990-014-FA

Alternate Leg ID: 90-OR-SUB-POPENOE

Area of Operations: Blake Plateau, east of Charleston, South Carolina, United States, North America, North Atlantic

Dates: July 02, 1990 to July 06, 1990

Objectives: 80 miles east of Charleston: 1. To establish stratigraphic age, lithology, and phosphorite content of strata by bottom sampling of outcrop areas. 2. To determine the nature of scarps. To observe and measure fracture patterns and possible scour and bioerosion features. 3. To observe and record phosphorite pavement thickness and extent and presence and thickness of manganese rinds. 4. To assess the benthic ecology of the study area, with particular emphasis on sessile epifauna. 5. To record current directions and speed with time. 6. To observe and record nepheloid layers, acoustic scattering and other organisms in the water column, and other water column parameters.

Type of Activity:

Information to be derived:

Summary: Data acquired: 9 video tapes taken with the external camera; 9 video tapes taken with the internal camera; 3 rolls of 36-exposure slides; pictures taken with external Benthos camera; 12 rock samples; 38 sand samples.

USGS Project Number: 9470-30041

Contact: Pete Popenoe (ppopenoe@usgs.gov)

InfoBank: uses the identifier P-1-90-EC. Visit this site for more information.