Facies associations, sand body geometry, and depositional systems in Late Oligocene-Pliocene strata, southern Kenai Peninsula, Cook Inlet, Alaska: Report on progress during the 2006-07 field season

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Frequently-anticipated questions:

What does this data set describe?

Title:
Facies associations, sand body geometry, and depositional systems in Late Oligocene-Pliocene strata, southern Kenai Peninsula, Cook Inlet, Alaska: Report on progress during the 2006-07 field season
Abstract:
This preliminary report is a summary of progress made during the 2006-07 field seasons reconstructing depositional systems in Tertiary strata exposed in the Homer-Kachemak Bay area. The study area addressed in this report extends from Clam Gulch in the north to Coal Cove in the south. Tertiary strata in this area are only mildly deformed and provide a relatively clear view of depositional systems and sand body geometries along the eastern basin edge and their change from basin edge to more basin axial positions.
Supplemental_Information:
The data are available in tabular format as comma delimited ASCII files organized into one entity as described in this metadata file under the "Entity_and_Attribute_Information" section. The table is as follows: 
Table A1  describes locations of measured sections
  1. How should this data set be cited?

    LePain, D.L., Wartes, M.A., McCarthy, P.J., Stanley, R.G., Silliphant, L.J., Peterson, Shaun, Shellenbaum, D.P., Helmold, K.P., Decker, P.L., Mongrain, Jacob, and Gillis, R.J., 2009, Facies associations, sand body geometry, and depositional systems in Late Oligocene-Pliocene strata, southern Kenai Peninsula, Cook Inlet, Alaska: Report on progress during the 2006-07 field season: Preliminary Interpretive Report PIR 2009-8A, Division of Geological & Geophysical Surveys, Fairbanks Alaska.

    Online Links:

    Other_Citation_Details: p. 1-97
    This is part of the following larger work.

    Lepain, D.L. ed., 2009, Preliminary results of recent geologic investigations in the Homer-Kachemak Bay area, Cook Inlet Basin: Progress during the 2006-2007 field season: Preliminary Interpretive Report PIR 2009-8, Division of Geological & Geophysical Surveys, Fairbanks, AK.

    Online Links:

    Other_Citation_Details: 187 p.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: 151.8925
    East_Bounding_Coordinate: 150.49642
    North_Bounding_Coordinate: 60.24970
    South_Bounding_Coordinate: 59.3942

  3. What does it look like?

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

    Beginning_Date: 2006
    Ending_Date: 2007
    Currentness_Reference: ground condition

  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 Point data set.

    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 0.0001. Longitudes are given to the nearest 0.0001. 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 6378137.
      The flattening of the ellipsoid used is 1/298.25722210088.

  7. How does the data set describe geographic features?

    Table A1.csv
    Table showing locations of measured sections (Source: Alaska Division of Geological & Geophysical Surveys)

    No.
    sequential numbers listing the number of measured sections (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:1
    Maximum:23
    Units:n/a

    Section Name
    Name of measured section assigned by geologist (Source: Alaska Division of Geological & Geophysical Surveys)

    Names are assigned by the geologist to measured sections and are unrepresentable

    Location Name
    geographic location of measured section (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    Coal Cove, Port Grahammeasured section is located in Coal Cove, Port Graham
    Point Pogibshi, Kachemak Baymeasured section is located in Point Pogibshi, Kachemak Bay
    Fritz Creek, Kachemak Baymeasured section is located in Fritz Creek, Kachemak Bay
    Bluff Pointmeasured section is located in Bluff Point
    Diamond Gulchmeasured section is located in Diamond Gulch
    Falls Creek, Kachemak Baymeasured section is located at Falls Creek, Kachemak Bay
    Fox River, Kenai NWRmeasured section is located at Fox River, Kenai Wildlife Refuge
    Deep Creek, southern Kenai Peninsulameasured section is located at Deep Creek, southern Kenai Peninsula
    Clam Gulch, Cook Inletmeasured section is located at Clam Gulch, Cook Inlet

    Formation
    geologic formation in which measured section was located (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    TyonekTyonek formation, Tertiary
    BelugaBeluga Formation, Tertiary
    Beluga-SterlingBeluga Formation and Sterling Formation,Tertiary
    SterlingSterling Formation, Tertiary
    Sterling?questionably Sterling Formation, Tertiary

    Latitude
    position with respect to the equator (Source: Alaska Division of Geological Surveys)

    Range of values
    Minimum:59.3942
    Maximum:60.24970
    Units:decimal degrees
    Resolution:0.0001

    Longitude
    position with respect to prime meridian (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:150.79642
    Maximum:151.8925
    Units:decimal degrees
    Resolution:0.0001

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?

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

    Geologist, Energy Section
    3354 College Road
    Fairbanks, Alaska 99709
    USA

    (907) 451-5010 (voice)

Why was the data set created?

The work is part of a Cool Inlet basin-wide effort to reconstruct depositionsl systems for use as a predictive tool in oil and gas exporation. The resulting framework will provide the context for evaluating sand body geometries.

How was the data set created?

  1. From what previous works were the data drawn?

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

    Date: 2009 (process 1 of 1)
    Samples were collected in the field (2006-2007) and their coordinates were documented using a handheld GPS device and recorded in tabular form.

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

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

    The latitued and longitude values in this report were collected with handheld GPS units which are accurate to approximately 4 meters.

  2. How accurate are the geographic locations?

    The horizontal position accuracy on point data is approximately 4 meters based on the error range in the handheld GPS units used to collect spatial information.

  3. How accurate are the heights or depths?

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

    Sample collection locations were determined in the field using handheld GPS devices, the error of which is probably ~4 meters. When sample coordinates are plotted on a topographic base map, the samples collected accurately reflect the actual location of sample collection.

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

    No topologic relationships are present in 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:
This report, map, and/or dataset are available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).
Use_Constraints:
Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. User specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys.

Who wrote the metadata?

Dates:
Last modified: 09-Oct-2009
Metadata author:
Geologist, Energy Section
3354 College Road
Fairbanks, Alaska 99709
USA

(907) 451-5010 (voice)

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

Generated by mp version 2.9.6 on Tue Nov 17 17:47:14 2009