Accession Number : AD0721684

Title :   Micropaleontologic Correlation of a Group of Cores from a Submarine Plain Southeast of Puerto Rico.

Descriptive Note : Technical document,

Corporate Author : NAVAL UNDERWATER SYSTEMS CENTER NEWPORT R I

Personal Author(s) : Babcock,Laurel C.

Report Date : 15 SEP 1970

Pagination or Media Count : 21

Abstract : As part of a study of bottom sediments, seventeen deep-sea cores were correlated by micropaleontologic techniques. The purpose of the correlation was to determine continuity of sub-bottom layers, to compare the values and limitations of paleontologic vs. lithologic correlation in the area, and to estimate sedimentation rates and age of sedimentation sampled. The cores consist of carbonate lutite interbedded with graded layers of carbonate silt and sand. Pelagic foraminifera found in the lutite were the principal objects of study. Correlation was done on the basis of changing climatic zones as indicated by temperature-sensitive species, and changing coiling directions of successive populations of the species Globorotalia Truncatulinoides. (Author)

Descriptors :   (*OCEAN BOTTOM SAMPLING, SEDIMENTATION), (*OCEAN BOTTOM TOPOGRAPHY, *CARIBBEAN SEA), PALEONTOLOGY, CORRELATION TECHNIQUES, GEOLOGIC AGE DETERMINATION, MARINE GEOLOGY, SILT, SAND, FORAMINIFERA, MARINE BIOLOGY, CARBONATES, MATHEMATICAL ANALYSIS, MICROSTRUCTURE, PUERTO RICO

Subject Categories : Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE