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General Information
File Identifier: gov.noaa.ngdc.mgg.geology:G02890
Metadata Date Stamp: 2015-12-31
Organization: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Organization Role: pointOfContact
Identification Information
Title: The MAFLA (Mississippi, Alabama, Florida) Study, Grain Size Analyses
Dataset Publication Date: 1985-03-20
Abstract: 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.
Credit L. J. Doyle, University of Southern Florida, with funding from the National Oceanic and Atmospheric Administration (NOAA)
Constraints While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
Data Type: Vector
Browse Graphic
Browse Graphic URL:
Browse Graphic Caption: sample locations in study area
Browse Graphic Type: GIF
Data Theme
Theme Topics: Geological and Geophysical, Oceans and Estuaries
Reference System Information
Reference System URN: urn:ogc:def:crs:EPSG:4326
Spatial Domain
West Bounding Longitude: -88.949
South Bounding Latitude: 25.647
East Bounding Longitude: -82.248
North Bounding Latitude: 30.305
Zoom to the resource envelope
Beginning Date: 1974-05-16
Ending Date: 1978-02-20
Data Quality Information
Scope (quality information applies to): Dataset
Data History: These data were contributed by the originator to NOAA's former National Oceanographic Data Center (NODC) and may be part of a larger compilation archived as oceanographic data by NCEI. Data were contributed on nine track magnetic tape in ASCII form, as 80 character records blocked to 4800 characters/block. Ten files of MAFLA data were followed by additional STOCS data on the tape, as described in a separate metadata record. Data files included cruises MAFLA002, MAFLA010, MAFLA011, MAFLA014, MAFLA021, MAFLA029, MAFLA039, MAFLADM1, MAFLADM2, and MAFLADM4 - 15,175 records of 073 grain size data with no significant errors, so they were added to the NGDC Seafloor Sediment Grain Size Database.
Contact Information
Organization: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Contact Position: Marine Geology Data Manager
Address: 325 Broadway, Mail Code E/NE42
City: Boulder
State: CO
Postal Code: 80305-3328
Country: USA
Telephone: (303) 497-4603
Fax: (303) 497-6513
Distribution Information
Format Name: ASCII
Distribution Link:
Distribution Link Function: Download
Metadata Reference Information
Acquisition Information
Instrument: In Situ/Laboratory Instruments
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