CERCTM42: USACE ICONS Cores, Cape Canaveral, Florida

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Frequently-anticipated questions:

What does this data set describe?
    Title: CERCTM42: USACE ICONS Cores, Cape Canaveral, Florida
    Abstract:
    The Atlantic Inner Continental Shelf off central Florida was surveyed by the Coastal Engineering Research Center to obtain information on morphology, structure, and sediments of the seafloor bottom and shallow subbottom for use in interpretation of Quaternary history and delineation of sand deposits suitable for restoration of nearby beaches. Basic survey data consists of 360 statute miles of high resolution seismic reflection profiling and 90 sediment cores (10 to 20 feet long) collected in water depths of 25 to 90 feet below sea level.

    Analysis shows the shallow subbottom is characterized by two continuous mappable acoustic horizons which lie nearly parallel to the present surface. The lower one lies at about 40 to 80 feet subsurface and is mid-Pleistocene in age. The upper sonic reflector lies between 10 and 40 feet below bottom, and correlates well with a marked lithologic change from overlying unconsolidated sediments to deposit partially lithified by blocky, mosiac, calcite cement.

    Radiocarbon dates of intertidal shells and of overlying peats indicate this horizon is a pre-Holocene regressive surface. Slightly oolitic sediments comprising the layer are interpreted to represent a coastal complex deposited during a late Pleistocene (mid-Wisconsin) high sea level. Tertiary strata are truncated by a Pleistocene erosion surface lying at between -120 and -160 feet MSL. Overlying Quaternary sediments overage about 80 feet in thickness.

    Surficial sediments adjacent to Cape Canaveral are medium to coarse, wellsorted quartzose-mollusk sand. Areal distribution and thickness (up to 40 feet) of this modern sand is directly related to topography: deposits are thickest beneath topographic highs, generally less than 5 feet thick on flat areas, and absent in depressions. Late Pleistocene regressive sediments, which locally crop out, and overlying mid-Holocene, transgressive coastal (lagoon, barrier) sediments, have been reworked and reshaped to form an undulatory surface of active sediments. Late Quaternary and modern deposition has centered around the large, south trending, cape-associated shoals. The large plano-convex isolated shoals lying seaward of cape shoals, particularly The Bull Shoal, represent remnants of earlier cape-associated shoals segmented and stranded during late Holocene sea-level rise.

    Studies of area beach sediments show them to be derived from: erosion of the shoreface; onshore transport from adjacent shoal regions; and southerly longshore transport into the area. Petrology, faunal assemblages, and textural characteristics indicate that local coastal and shelf sources have been more important in the genesis of modern areal beach sands than southerly longshore drift.

    Nearly all of the surficial sand deposits are suitable for beach restoration, and the thick deposits associated with topographic highs are the most suitable. Extensive deposits of sand suitable as a borrow source comprise The Bull, Ohio-Hetzel, Chester and Souteast Shoals, which have minimum volumes of 32, 79, 9, and 15 (x106) cubic yards, respectively. Volumes of suitable sand in surveyed portions of Chester Shoal and Southeast Shoal are likely an order of magnitude larger. Total volume of surficial medium-grained sands within the confines of the study area is over 2 x 109 cubic yards.

  1. How should this data set be cited?

    Reid, Jamey M. , 2005, CERCTM42: USACE ICONS Cores, Cape Canaveral, Florida:, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -80.5553
    East_Bounding_Coordinate: -80.4280
    North_Bounding_Coordinate: 28.66197
    South_Bounding_Coordinate: 28.09207

  3. What does it look like?

    tm42.jpg (JPEG)
    Image map showing extent and distribution of data layer coverage

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: 1974
    Currentness_Reference: publication date

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: document

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • Entity point (601)

    2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000000. Longitudes are given to the nearest 0.000000. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.400000.
      The flattening of the ellipsoid used is 1/294.978698.

  7. How does the data set describe geographic features?

    tm42

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    REF_ID

    CORE_ID

    LATITUDE

    LONGITUDE

    Entity_and_Attribute_Overview:
    Sample identifiers, navigation, core descriptions, and grain size statistics form the USACOE ICONS program project in Cape Canaveral, Florida. Some enries for top and bottom depths were originally reported as "top." In the digital files, "top" was changed and defined as 0-0.02 meters.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    Pleae review the cross reference information for the original data set credit to Field and Duane (1974). Emma Mitchell and Jamey M. Reid for entering the data from the source report.

  3. To whom should users address questions about the data?

    Jeff Williams
    U.S. Geological Survey
    Geologist
    384 Woods Hole Rd.
    Woods Hole, MA 02543-1598

    (508) 548-8700x2383 (voice)
    508-457-2310 (FAX)
    jwilliams@usgs.gov

Why was the data set created?
The purpose of this datalayer is to release a digital version of the coring data from a U. S. Army Corp of Engineers (USACOE) Inner Continental Shelf (ICONS) program project fin Cape Canveral, Florida.

How was the data set created?
  1. From what previous works were the data drawn?

    USACOE Technical Memorandum 42 (source 1 of 1)
    Field, Michael E, and Duane, D.B., 1974, Geomorphology and sediments of the inner Continental Shelf, Cape Canaveral, Florida: Technical Memorandum 42, Department of the Army, Coastal Engineering Research Center (CEREN-GE), Fort Belvoir, VA.

    Type_of_Source_Media: paper
    Source_Contribution:
    Same identifiers, navigation, core descriptions, and grain-size statistics were hand-entered form report TM42 to create an Excel spreadsheet file.

  2. How were the data generated, processed, and modified?

    Date: 19-Jun-2002 (process 1 of 2)
    The source information was entered into an Excel spreadsheet. Additional fields were added for project identification purposes. The table information was exported and saved as an ASCII text file.

    Person who carried out this activity:

    Jamey M. Reid
    U.S. Geological Survey
    IT Specialist (Data Management)
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2204 (voice)
    (508) 457-2310 (FAX)
    jreid@usgs.gov

    Data sources used in this process:
    • CERCTM42.xls

    Data sources produced in this process:

    • CERCTM42.txt

    Date: 18-Jun-2004 (process 2 of 2)
    Digital data were hand formatted into dbSEABED data entry structure, then filtered and data-mined through dbSEABED software (version: db9_MNEr.bas)

    Person who carried out this activity:

    Viness Ubert
    U.S. Geological Survey
    Physical Science Technician
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2238 (voice)
    (508) 457-2310 (FAX)
    vubert@usgs.gov

    Data sources used in this process:
    • CERCTM42.txt

  3. What similar or related data should the user be aware of?

    Field, Michael E, and Duane, D.B., 1974, Geomorphology and sediments of the inner continental shelf, Cape Canaveral, Florida: Technical Memorandum 42, Department of the Army, Coastal Engineering Research Center (CEREN-GE), Fort Belvoir, VA.

How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?

    All attributes were entered and checked by the compilers in a consistent manner.

  2. How accurate are the geographic locations?

    navigation was by LORAN C. Typical nonrepetitive accuracy for LORAN off Florida is about +/- 200 meters

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    Core locations are provided for 13 vibracores;grain size for no analyses. There are descriptions for the 17 analyses.

  5. How consistent are the relationships among the observations, including topology?

    No additional checks for topological consistency were performed on this data set.

How can someone get a copy of the data set?
Are there legal restrictions on access or use of the data?

Access_Constraints: None
Use_Constraints: None

  1. Who distributes the data set? (Distributor 1 of 1)

    Jamey M. Reid
    U.S. Geological Survey
    IT Specialist (Data Management)
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2204 (voice)
    (508) 457-2310 (FAX)
    jreid@usgs.gov

  2. What's the catalog number I need to order this data set?

    Marine Aggregate Resources and Processes: CERCTM42

  3. What legal disclaimers am I supposed to read?

    Although this data set has been used by the U.S. Geological Survey (USGS), no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials.

    Trade, firm, or product names and other references to non-USGS products and services are provided for information only and do not constitute endorsement or warranty, express or implied, by the USGS, USDOI, or U.S. Government, as to their suitability, content, usefulness, functioning, completeness, or accuracy

  4. How can I download or order the data?

  5. What hardware or software do I need in order to use the data set?

    The original data is available in ASCII text format

Who wrote the metadata?
Dates:
Last modified: 30-Jun-2004
Last Reviewed: 03-May-2005

Metadata author:
U.S. Geological Survey
c/o Viness Ubert
Physical Science Technician
384 Woods Hole Road
Woods Hole, MA 02543-1598
USA

(508) 548-8700 x2238 (voice)
(508) 457-2310 (FAX)
vubert@usgs.gov

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:

Generated by mp version 2.7.33 on Wed May 25 13:36:42 2005