Mineralogy and Origin of Sediments From Drill Holes on the Continental Margin Off Florida, 1965-1969 (NCEI Accession 7100714)

Drill cores obtained during the Joint Oceanographic Institutions' Deep Earth Sampling Program from the continental shelf, the Florida-Hatteras Slope, and the Blake Plateau off northern Florida are composed of sediments ranging in age from Paleocene to post-Miocene. Calcite is the dominant mineral in all the cores; dolomite is almost completely restricted to the shelf and slope cores. Aragonite persists in samples as old as Oligocene, but the magnesian calcite occurs only in post-Miocene samples. In general, only Miocene samples contain non-carbonate minerals in appreciable quantity. Phosphates are limited largely to the Miocene sediments. Here also, the clay minerals palygorskite, sepiolite, and montmorillonite are dominant. These clay minerals and the zeolites clinoptiolite and phillipsite in Miocene and older sediments suggest that volcanic activity was the principal source of non-carbonate deposition during much of the Tertiary. Heavy-mineral analyses suggest a southern Appalachian source for detrital materials. Terrigenous detrital material is scarce in most of the cores except for the surface samples on the continental shelf. The concentration of detrital quartz here probably resulted from reworking and winnowing by regression and transgression of the sea during Pleistocene rather than by increased influx of Terrigenous material.

Consolidated chertlike rocks consist of dominantly carbonate minerals in the near-shore holes and dominantly opaline cristobalite inthe Blake Plateau holes. Reflux dolomitization by dense brines produced in evaporative lagoons in the area of the continental shelf and later incursions of fresh ground water from the Florida peninsula may have lithified sediments in the near-shore holes. Only when conditions were favorable for silicification were sediments on the Blake Plateau appreciably consolidated.
  • Cite as: US DOI > US Geological Survey (2017). Mineralogy and Origin of Sediments From Drill Holes on the Continental Margin Off Florida, 1965-1969 (NCEI Accession 7100714). NOAA National Centers for Environmental Information. Unpublished Dataset. [access date]
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  • Originator data format
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Distributor DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
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DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
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Time Period 1965-05-01 to 1969-12-31
Spatial Bounding Box Coordinates
N: 32
S: 28
E: -76
W: -82
Spatial Coverage Map
General Documentation
  • Dataset Description
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Publication Dates
  • publication: 2017-12-08
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency As needed
Supplemental Information
Platform - M.V. Caldrill I

Collecting Institution: Joint Oceanographic Institutions Deep Earth Sampling Program (JOIDES).

Submitter: John C. Hathaway, Peter F. McFarlin, and David A. Ross.

Instruments: Drill

There is a copy of the publication at the Silver Spring library and the code is QE75 .P9 no.581-E.
Purpose Basic research
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  • Data in this archival information package are not currently available for public download from NCEI. Please contact NCEI Information Services directly for access to these data.
  • accessLevel: Public
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Dataset Citation
  • Cite as: US DOI > US Geological Survey (2017). Mineralogy and Origin of Sediments From Drill Holes on the Continental Margin Off Florida, 1965-1969 (NCEI Accession 7100714). NOAA National Centers for Environmental Information. Unpublished Dataset. [access date]
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Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Global Change Master Directory (GCMD) Science Keywords
  • EARTH SCIENCE > OCEANS > MARINE SEDIMENTS
  • EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOI/USGS > U.S. Geological Survey, U.S. Department of the Interior
  • WHOI > WOODS HOLE OCEANOGRAPHIC INSTITUTION
NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS
Instrument keywords NODC INSTRUMENT TYPES THESAURUS
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords
  • OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: US DOI > US Geological Survey (2017). Mineralogy and Origin of Sediments From Drill Holes on the Continental Margin Off Florida, 1965-1969 (NCEI Accession 7100714). NOAA National Centers for Environmental Information. Unpublished Dataset. [access date]
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Acquisition Information (collection)
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  • laboratory analysis
Last Modified: 2017-12-08T19:37:34
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