Field station locations and data for the geologic map of the Haines-Takshanuk Mountains-Chilkat Peninsula area STATEMAP project, southeast Alaska, collected in 2022 and 2023

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Frequently anticipated questions:


What does this data set describe?

Title:
Field station locations and data for the geologic map of the Haines-Takshanuk Mountains-Chilkat Peninsula area STATEMAP project, southeast Alaska, collected in 2022 and 2023
Abstract:
Field station locations and data for the geologic map of the Haines-Takshanuk Mountains-Chilkat Peninsula area STATEMAP project, southeast Alaska, collected in 2022 and 2023, Raw Data File 2024-17, provides locations and field descriptions of stations observed during fieldwork in portions of the Skagway A-1, A-2, B-1, B-2, B-3, and the Juneau D-4 15-minute quadrangles, an area of approximately 300 square miles. During July 2022, May 2023, and August 2023, geologists from the Alaska Division of Geological & Geophysical Surveys (DGGS) conducted fieldwork supporting surficial and bedrock mapping for the Haines-Takshanuk Mountains-Chilkat Peninsula area STATEMAP project. This publication serves as an archive of field site observations and supports research discussion and collaboration. These data and report are available from the DGGS website: http://doi.org/10.14509/31285.
Supplemental_Information:
station_location_data:    Station location and field observations.
  1. How might this data set be cited?
    Truskowski, C.M., Walser, S.L., Larsen, M.C., Nicolazzo, J.A., Gillis, R.J., Bull, K.F., Regan, S.P., Darrow, M.M., and Montayne, Simone, 2024, Field station locations and data for the geologic map of the Haines-Takshanuk Mountains-Chilkat Peninsula area STATEMAP project, southeast Alaska, collected in 2022 and 2023: Raw Data File RDF 2024-17, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 3 p.
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -135.847361
    East_Bounding_Coordinate: -135.057648
    North_Bounding_Coordinate: 59.422273
    South_Bounding_Coordinate: 58.841704
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 2024
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: csv
  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 0.0000001. Longitudes are given to the nearest 0.0000001. Latitude and longitude values are specified in decimal degrees. The horizontal datum used is WGS84.
      The ellipsoid used is WGS 84.
      The semi-major axis of the ellipsoid used is 6378137.
      The flattening of the ellipsoid used is 1/298.257223563.
  7. How does the data set describe geographic features?
    rdf2024_017_station_location_data.csv, rdf2024_017_station_location_data_dictionary.csv
    Station location and field observations. (Source: DGGS)

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?
    This report was funded by the USGS National Cooperative Geologic Mapping Program under STATEMAP award number G22AC00606, 2022, and the State of Alaska General Fund. The views and conclusions contained in this document are those of the authors. They should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government. Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey or by any branch or employee of the State of Alaska.
  3. To whom should users address questions about the data?
    Alaska Division of Geological & Geophysical Surveys
    Metadata Manager
    3354 College Road
    Fairbanks, AK
    USA

    (907)451-5020 (voice)
    (907)451-5050 (FAX)
    dggspubs@alaska.gov
    Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays
    Contact_Instructions:
    Please view our website (https://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible.

Why was the data set created?

A comprehensive, detailed map constructed using modern analytical methods is critical to help Haines area land managers and residents make informed decisions when planning future development and evaluating risks to infrastructure. This publication serves as an archive of field site observations and supports research discussion and collaboration.

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: 2023 (process 1 of 1)
    Geologic mapping - We conducted three field investigations (July 23-28, 2022, May 22-30, 2023, and August 13-25, 2023), during which we collected data using GPS-enabled tablets running Esri ArcGIS Field Maps and Petroleum Expert Field Move. Collected data includes location and orientation information, observed units and lithology, photos, material descriptions, general observations, surficial rock mass rating (RMR), and surficial Schmidt Hammer uniaxial compressive strength tests. Where possible, we left the surface undisturbed and made observations from natural exposures or road cuts. Where natural exposures were unavailable, we hand-dug shallow test pits to observe subsurface materials. Data were compiled and merged into the DGGS Geologic and Earth Resources Information Library of Alaska (GERILA) PostgreSQL database upon return to Fairbanks. Photos associated with field stations may be accessed through the DGGS photo database.
  3. What similar or related data should the user be aware of?
    Larsen, M.C., Regan, S.P., Gillis, R.J., Nicolazzo, J.A., Darrow, M.M., Bull, K.F., Walser, S.L., and Truskowski, C.M., 2024, Geologic mapping and description of map units of the Haines-Takshanuk Mountains-Chilkat Peninsula area, Southeast Alaska: Preliminary Interpretive Report PIR 2024-9B, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Nicolazzo, J.A., Darrow, M.M., Larsen, M.C., and Walser, S.L., 2024, Rock strength properties of the Haines-Takshanuk Mountains-Chilkat Peninsula area statemap project, Southeast Alaska: Raw Data File RDF 2024-28, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Nicolazzo, J.A., Darrow, M.M., and Walser, S.L., 2024, Soil index properties and radiocarbon ages of the Haines-Takshanuk Mountains-Chilkat Peninsula area statemap project, Southeast Alaska: Raw Data File RDF 2024-27, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Truskowski, C.M., Gillis, R.J., Bull, K.F., and Regan, S.P., 2024, Major oxide and trace element analyses for rock samples from the Haines-Takshanuk Mountains-Chilkat Peninsula area STATEMAP project, southeast Alaska: Raw Data File RDF 2024-18, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 4 p

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

  1. How well have the observations been checked?
    Rock and outcrop descriptions from field stations presented in the accompanying data are reconnaissance observations and interpretations made by project geologists in the field. Subsequent data products may update and augment them to reflect further observations, geochemical values, microscopic investigation, or other information. Field rock and outcrop descriptions in this data release have not been reviewed for technical content and should be considered preliminary. In some cases, ground and weather conditions only allowed a brief verification of published map unit interpretations (Berg and others, 1972; Gilbert and others, 1987; Gilbert and others, 1988; Gilbert, 1988; Redman and others, 1984; Wilson and others, 2015.). The accompanying report provides a comprehensive bibliographic reference list of prior work identifying and delineating rock units and structural elements.
  2. How accurate are the geographic locations?
    We collected station location information, rock descriptions, sample collection notes, and photographs using Esri's ArcGIS Field Maps, which was set to collect data only if the horizontal location error was equal to or less than 10 m.
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    This data release is complete.
  5. How consistent are the relationships among the observations, including topology?
    Not applicable

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 is 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. The 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. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
  1. Who distributes the data set? (Distributor 1 of 1)
    Alaska Division of Geological & Geophysical Surveys
    Metadata Manager
    3354 College Road
    Fairbanks, AK
    USA

    (907)451-5020 (voice)
    (907)451-5050 (FAX)
    dggspubs@alaska.gov
    Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays
    Contact_Instructions:
    Please view our website (https://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible.
  2. What's the catalog number I need to order this data set? RDF 2024-17
  3. What legal disclaimers am I supposed to read?
    The State of Alaska makes no expressed or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 14-Oct-2024
Metadata author:
Alaska Division of Geological & Geophysical Surveys
Attn: Simone Montayne
Metadata Manager
3354 College Road
Fairbanks, AK
USA

(907)451-5020 (voice)
(907)451-5050 (FAX)
dggspubs@alaska.gov
Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays
Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:

Generated by mp version 2.9.50 on Mon Oct 14 21:57:18 2024