DGGS Geologic Earth Resource Library of Alaska (GERILA) Database

Metadata also available as - [Parseable text] - [XML]

Frequently anticipated questions:


What does this data set describe?

Title:
DGGS Geologic Earth Resource Library of Alaska (GERILA) Database
Abstract:
DGGS Geologic Earth Resource Library of Alaska (GERILA) Database, Digital Data Series 22, is the enterprise database back-end to the Alaska Division of Geological & Geophysical Survey's (DGGS) website and enterprise data repository. GERILA serves as an index to geologic information that supports State of Alaska statutes relating to the potential of Alaskan land for the production of metals, minerals, fuels, and geothermal resources, the locations and supplies of groundwater and construction material (Sec. 41.08.010), and the potential geologic hazards to buildings, roads, bridges, and other installations and structures and systematic collection, recording, evaluation, and distribution of hydrological and seismic hazard data declared to be of public interest (Sec. 41.08.017). Much of the information stored in GERILA is viewable through DGGS's public website, which provides search interfaces for specific data modules, including our geologic publications catalog (https://dggs.alaska.gov/pubs). The database is actively updated as new information becomes available or published. Consequently, products developed from the database may change over time as information and data are updated. DGGS encourages public members to contact DGGS's Geologic Information Center staff (dggspubs@alaska.gov) to discuss potential changes to the data or resolve errors in our derivative products. See the DGGS citation page for the preferred citation and additional information (http://doi.org/10.14509/31119).
Supplemental_Information:
alaska_geologic_map_index:    Geologic Map Index of Alaska web application that provides the locations, outlines, and current status of Alaska geological and geophysical maps from government agencies in a single, interactive, Internet-accessible location.	
open_data_metadata_data_stewardship:    Open Data compliance, FGDC metadata, and data stewardship is an ongoing program to ensure public access, federal data standards, and responsible stewardship of the interpretive and raw data products created by DGGS scientists. Project responsibilities include publication database development and archiving, providing FDGC-compliant metadata, and compiling machine-readable data products for online distribution. Geospatial and analytical datasets published by DGGS are designed to be compatible with a wide variety of digital mapping software, to present DGGS geospatial data in multiple ways, and to provide the State with a comprehensive repository of geoscientific data that the Division collects and distributes.	
field_stations_samples_database:    The field stations and samples project is an ongoing project to compile and catalog field station and sample locations and observations during and in support of DGGS projects. Many station observations record data from remote locations that are often impossible or prohibitively expensive to revisit. The data catalog includes a web-based search function that allows users to discover analytical, publication, and sample archive.	
projects_database:    The DGGS projects database is an ongoing project to compile information about DGGS scientific and information architecture programs. The records catalog project names, locations, funding sources, and related work. The database also cross-references field stations and sample locations and descriptions, publications, archived geologic samples, geochemical data, and field and analytical sample images.
  1. How might this data set be cited?
    Seitz, S.S., Montayne, Simone, Freeman, L.K., and Staff, DGGS, 2024, DGGS Geologic Earth Resource Library of Alaska (GERILA) Database: Digital Data Series DDS 22, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -180.000000
    East_Bounding_Coordinate: 180.000000
    North_Bounding_Coordinate: 71.392029
    South_Bounding_Coordinate: 51.217293
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 2000
    Ending_Date: 2024
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: data
  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.
    2. What coordinate system is used to represent geographic features?
      The horizontal datum used is NAD83.
      The ellipsoid used is GRS 80.
      The semi-major axis of the ellipsoid used is 6378137.
      The flattening of the ellipsoid used is 1/298.257222101.
  7. How does the data set describe geographic features?
    Alaska Geologic Map Index
    Geologic Map Index of Alaska web application that provides the locations, outlines, and current status of Alaska geological and geophysical maps from government agencies in a single, interactive, Internet-accessible location. (Source: DGGS)
    DGGS Open Data compliance, FGDC metadata, and data stewardship
    Open Data compliance, FGDC metadata, and data stewardship is an ongoing program to ensure public access, federal data standards, and responsible stewardship of the interpretive and raw data products created by DGGS scientists. Project responsibilities include publication database development and archiving, providing FDGC-compliant metadata, and compiling machine-readable data products for online distribution. Geospatial and analytical datasets published by DGGS are designed to be compatible with a wide variety of digital mapping software, to present DGGS geospatial data in multiple ways, and to provide the State with a comprehensive repository of geoscientific data that the Division collects and distributes. (Source: DGGS)
    DGGS field stations and samples database
    The field stations and samples project is an ongoing project to compile and catalog field station and sample locations and observations during and in support of DGGS projects. Many station observations record data from remote locations that are often impossible or prohibitively expensive to revisit. The data catalog includes a web-based search function that allows users to discover analytical, publication, and sample archive. (Source: DGGS)
    DGGS projects database
    The DGGS projects database is an ongoing project to compile information about DGGS scientific and information architecture programs. The records catalog project names, locations, funding sources, and related work. The database also cross-references field stations and sample locations and descriptions, publications, archived geologic samples, geochemical data, and field and analytical sample images. (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?
    The DGGS GERILA database was envisioned more than 30 years ago and is actively updated and expanded as new information becomes available or published. Numerous DGGS staff have contributed to it's design, network support, and source data. Conrtiutors of note include Ellen Daley, Joni Robinson, Gail Davidson, Carrie Browne, Ken Papp, Melissa Nelson, Chris Ramey, Kristen Hendricks, Chris Wyatt, and John Barefoot. Development of this database was initiated as part of the federally funded Minerals Data and Information Rescue in Alaska (MDIRA) program in 2000, the federal National Geological and Geophysical Data Preservation Program (NGGDPP) has funded paper to digial conversion of several additional datasets, and ongoing data input, use, and maintenance of the database system are now an integral part of DGGS's operations supported by State general funds along. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government.
  3. To whom should users address questions about the data?
    Alaska Division of Geological & Geophysical Surveys
    GIS Manager
    3354 College Rd
    Fairbanks, AK
    USA

    907-451-5020 (voice)
    dggsgis@alaska.gov
    Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays

Why was the data set created?

GERILA serves as an index to geologic information supporting State of Alaska statutes.

How was the data set created?

  1. From what previous works were the data drawn?
    DGGS Staff and Daley, E.E., 2000 (source 1 of 3)
    Staff, DGGS, and Daley, E.E., 2000, Alaska GeoSurvey News - DGGS Scanning project: Newsletter NL 2000-2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 5 p
    Type_of_Source_Media: digital data
    Source_Contribution: document scanning
    DGGS Staff and Freeman, L.K., 2001 (source 2 of 3)
    Staff, DGGS, and Freeman, L.K., 2001, Alaska GeoSurvey News - The DGGS Geologic Database: Putting geologic data modeling into practice: Newsletter NL 2001-3, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 6 p
    Type_of_Source_Media: digital data
    Source_Contribution: database model development
    DGGS Staff and Papp, K.R., 2005 (source 3 of 3)
    Staff, DGGS, and Papp, K.R., 2005, Alaska GeoSurvey News - A summary of the past, present, and future of distributing Alaskan geologic data in digital format: Newsletter NL 2005-2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 8 p
    Type_of_Source_Media: digital data
    Source_Contribution: user interface development
  2. How were the data generated, processed, and modified?
    Date: 2004 (process 1 of 3)
    Document scanning - In 1999, DGGS began scanning DGGS, USGS Alaska, Bureau of Mines (BOM), University of Alaska Fairbanks, Mineral Industry Research Laboratory publications to 300 dpi tiff files and converting the files to Adobe pdf format. This project phase was led by Ellen Daley and later Simone Montayne and funded by the USGS through the MDIRA project. Data sources used in this process:
    • DGGS Staff and Daley, E.E., 2000
    Date: 2004 (process 2 of 3)
    Database model development - On October 2000, DGGS started a project to create an enterprise geologic database system. The data model was designed to include geologic map features, field observations, sample descriptions and analyses, minerals resource data, information for evaluating geologic hazards, bibliographic information, and definitions of terms used to communicate geologic information. Database system infrastructure included a data server, relational database management software, and connections and utilities to aloow users to interface with the information. This project phase was led by Larry Freeman, Susan Seitz, Carrie Browne, Gina Graham, and Gail Davidson and funded by the USGS through the MDIRA project. Work to optimize and modernize the data design is ongoing. Data sources used in this process:
    • DGGS Staff and Freeman, L.K., 2001
    Date: 2024 (process 3 of 3)
    User interface development - Throughout the early development stages DGGS staff began feeding the database information. Initially data was imported from tables using SQL software applications. Once the data design and initial back-end data loading was complete, the database team began to develop web-based user interfaces (using JavaServer Pages) for accesing and adding information. This project phase was led by Susan Seitz with support from Simone Montayne and Ken Papp. User interface development was initially funded by the USGS through the MDIRA project. Work to optimize and modernize the user interface and populate the GERILA database with new content is ongoing and largely funded by The State of Alaska general fund. Data sources used in this process:
    • DGGS Staff and Papp, K.R., 2005
  3. What similar or related data should the user be aware of?
    Athey, J.E., Seitz, S.S., and Staff, DGGS, 2017, Geologic Photos of Alaska: Digital Data Series DDS 14, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Cameron, C.E., Crass, S.W., and Staff, AVO, 2022, Geologic Database of Information on Volcanoes in Alaska (GeoDIVA): Digital Data Series DDS 20, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Cameron, C.E., Mulliken, K.M., Crass, S.W., Schaefer, J.R., and Wallace, K.L., 2019, Alaska Volcano Observatory geochemical database, version 2: Digital Data Series DDS 8 v. 2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 22 p
    Cameron, C.E., and Snedigar, S.F., 2016, Alaska Volcano Observatory image database: Digital Data Series DDS 13, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Crafford, T.C., Crafford, Elizabeth, and others, 2012, Alaska Geologic Data Index (AGDI): Digital Data Series DDS 1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Staff, DGGS, 2013, Geologic Map Index of Alaska: Digital Data Series DDS 5, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Staff, DGGS, 2016, Geologic Materials Center Inventory: Digital Data Series DDS 11, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Staff, DGGS, 2014, Airborne GeophysWeb: A compilation of geophysical data from DGGS and cooperating agencies: Digital Data Series DDS 2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Staff, DGGS, Seitz, S.S., Reioux, D.A., Blessington, M.J., Jozwik, Diana, and Mulliken, K.M., 2017, Alaska Geochemistry: Digital Data Series DDS 15, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Newell, J.T., Maurits, S.A., Suleimani, E.N., Koehler, R.D., and Nicolsky, D.J., 2015, Tsunami inundation maps for Alaska communities: Digital Data Series DDS 10, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:


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

  1. How well have the observations been checked?
    Certainty in attribute identity varies throughout the data collection. When applicable, data fields within each feature module record the originator's degree of confidence in the classigication of record. In other cases, users will need to consider the age and origniation method of the value to ascertain possible errors.
  2. How accurate are the geographic locations?
    Location data stored in the applicable database fields have been aquired from various handheld GPS devices, published reports and unpublished field maps and have variable accuracy and precision. Geographic extents, when applicable, vary by feature. Users must recognize the source data's intended scale and location accuracy limitations. We encourage users to reference the originating data sources when using the database output for purposes other than graphical displays.
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    DGGS anticipates ongoing development of additional modules and data navigation products from the database. Data will be updated continually and revised as needed.
  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)
    State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
    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 (http://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? DDS 22
  3. What legal disclaimers am I supposed to read?
    The State of Alaska makes no express or implied warranties (including warranties of merchantability and fitness) with respect to the character, function, or capabilities of the electronic services 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, any failure thereof, or otherwise, and 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: 21-Feb-2024
Metadata author:
Simone Montayne
3354 College Road
Fairbanks, AK
USA

907-451-5020 (voice)
Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:

Generated by mp version 2.9.50 on Fri Feb 23 19:22:57 2024