The MAFLA (Mississippi, Alabama, Florida) Study, Grain Size Analyses
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.
Dataset Citation
- Cite as: L. J. Doyle. 1985: The MAFLA (Mississippi, Alabama, Florida) Study, Grain Size Analyses. First. NOAA National Centers for Environmental Information. Accessed [date].
Dataset Identifiers
- ID not available.
ISO 19115-2 Metadata
gov.noaa.ngdc.mgg.geology:G02890
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Ordering Instructions | Contact NCEI for other distribution options and instructions. |
Distributor |
NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Dataset Point of Contact |
NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Dataset Point of Contact | Marine Geology Data Manager NOAA National Centers for Environmental Information geology.info@noaa.gov |
Coverage Description | Gulf of Mexico offshore Mississippi, Alabama, and Florida |
Time Period | 1974-05-16 to 1978-02-20 |
Spatial Reference System | urn:ogc:def:crs:EPSG:4326 |
Spatial Bounding Box Coordinates |
West: -88.949
East: -82.248
South: 25.647
North: 30.305
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Edition | First |
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 Historical archive - data has been stored in an offline storage facility |
Data Update Frequency | Not planned - Completed data set, no additions planned. |
Supplemental Information | minimal documentation, added to NGDC grainsize database |
Purpose | environmental research |
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Other Constraints | Cite as: L. J. Doyle. 1985: The MAFLA (Mississippi, Alabama, Florida) Study, Grain Size Analyses. First. NOAA National Centers for Environmental Information. Accessed [date]. |
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Lineage Statement | 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. |
Processing Environment | Native Dataset Environment: ASCII text |
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Last Modified: 2020-04-21
For questions about the information on this page, please email: ncei.info@noaa.gov
For questions about the information on this page, please email: ncei.info@noaa.gov