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The MAFLA (Mississippi, Alabama, Florida) Study, Grain Size Analyses

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: May 06, 2026 at 09:31 AM | Dataset Last Updated: March 20, 1985 at 12:00 AM
The MAFLA (Mississippi, Alabama, Florida) Study was funded by NOAA as part of the Outer Continental Shelf Program. Dr. L.J. Doyle produced grain size analyses in the historic 073 format for 2,168 sea floor samples collected on multiple cruises (MAFLA cruises 2, 10, 11, 29, 39, 14, 21, and MAFLA DM1 and DM2) conducted in the Gulf of Mexico from May 16, 1974 through February 20, 1978. Data include collecting institution, ship, cruise, sample id, latitude/longitude, date of collection, water depth, sampling device, method of analysis, sample weight, sampled interval, raw weight percentages of sediment, within a given phi range. Some samples also have percentages of total gravel, sand, silt, clay, and statistical measurements such as mean, median, skewness, kurtosis, and standard deviation of grain size. These data are part of the larger NCEI digital grain size database.

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OCS > Outer Continental Shelf Program ICSU-WDS > International Council for Science - World Data System Mississippi/Alabama/Florida Area Environmental Study (MAFLA) Mississippi/Alabama/Florida Area Environmental Study (MAFLA) Scientific archives Electronic records Oceanography Ocean bottom

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description The MAFLA (Mississippi, Alabama, Florida) Study was funded by NOAA as part of the Outer Continental Shelf Program. Dr. L.J. Doyle produced grain size analyses in the historic 073 format for 2,168 sea floor samples collected on multiple cruises (MAFLA cruises 2, 10, 11, 29, 39, 14, 21, and MAFLA DM1 and DM2) conducted in the Gulf of Mexico from May 16, 1974 through February 20, 1978. Data include collecting institution, ship, cruise, sample id, latitude/longitude, date of collection, water depth, sampling device, method of analysis, sample weight, sampled interval, raw weight percentages of sediment, within a given phi range. Some samples also have percentages of total gravel, sand, silt, clay, and statistical measurements such as mean, median, skewness, kurtosis, and standard deviation of grain size. These data are part of the larger NCEI digital grain size database.
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    "description": "This database contains related grain size data.",
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identifier https://data.noaa.gov/waf/NOAA/NESDIS/NGDC/MGG/Geology/iso/xml/G02890.xml
isPartOf NCEI Marine Geology Data Archive
issued 1985-03-20T00:00:00.000+00:00
keyword 
[
  "OCS > Outer Continental Shelf Program",
  "ICSU-WDS > International Council for Science - World Data System",
  "Mississippi/Alabama/Florida Area Environmental Study (MAFLA)",
  "Mississippi/Alabama/Florida Area Environmental Study (MAFLA)",
  "Scientific archives",
  "Electronic records",
  "Oceanography",
  "Ocean bottom",
  "Geology",
  "Submarine geology",
  "Marine sediments",
  "Marine geology",
  "Sea-floor characteristics",
  "Earth Science > OCEANS > Coastal Processes > Sedimentation",
  "Earth Science > OCEANS > Marine Sediments > Sedimentation",
  "Earth Science > Oceans > Marine Sediments > Sedimentary Textures",
  "Earth Science > Oceans > Marine Environment Monitoring",
  "In Situ Ocean-based Platforms > Ships",
  "In Situ/Laboratory Instruments > Corers > Coring Devices",
  "In Situ/Laboratory Instruments > Samplers > Grabbers/Traps/Collectors > Grab Samplers",
  "In Situ/Laboratory Instruments > Corers > Sediment Corers",
  "DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce",
  "DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce",
  "Ocean > Atlantic Ocean > NORTH ATLANTIC OCEAN > GULF OF MEXICO",
  "Vertical Location >Sea Floor"
]
language 
[]
license https://creativecommons.org/publicdomain/zero/1.0/
modified 1985-03-20T00:00:00.000+00:00
publisher 
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  "https://doi.org/10.7289/V5G44N6W",
  "https://data.noaa.gov/metaview/page?xml=NOAA/NESDIS/NGDC/Collection/iso/xml/Marine_Geology.xml&view=getDataView&header=none",
  "https://data.noaa.gov/waf/NOAA/NESDIS/NGDC/MGG/Geology/iso/"
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rights otherRestrictions, unclassified, otherRestrictions
spatial -82.248,25.647,-88.949,30.305
temporal 1974-05-16T00:00:00+00:00/1978-02-20T00:00:00+00:00
title The MAFLA (Mississippi, Alabama, Florida) Study, Grain Size Analyses

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