Identification_Information: Citation: Citation_Information: Originator: Mull, C.G. Originator: Harris, E.E. Originator: Delaney, P.R. Originator: Swenson, R.F. Publication_Date: 2009 Title: Geology of the Cobblestone Creek-May Creek area, east-central Brooks Range Foothills, Alaska Geospatial_Data_Presentation_Form: geodatabase Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2009-5 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 40 p., 1 sheet, scale 1:63,360 Online_Linkage: https://doi.org/10.14509/19661 Description: Abstract: Geology of the Cobblestone Creek-May Creek area, east-central Brooks Range Foothills, Alaska, Preliminary Interpretive Report 2009-5, presents a 1:63,360 scale geologic map of the Cobblestone Creek-May Creek area of the foothills of the Endicott Mountains. This map is one of a series of areas selected for detailed mapping to document important structural and stratigraphic relationships at the east-central Brooks Range mountain front. The Cobblestone Creek-May Creek area is important in delineating the stratigraphic and structural relationships in this area because, unlike the adjacent valleys of the Itkillik and Nanushuk rivers, Cobblestone and May Creeks were not glaciated during the Pleistocene, and thus bedrock exposures are generally more continuous. The complete report, geodatabase, and ESRI fonts and style files are available from the DGGS website: http://doi.org/10.14509/19661. Purpose: Local field studies by the Alaska Division of Geological & Geophysical Surveys (DGGS) began in the area in 1982 and continued intermittently in conjunction with other field studies. In recent years, interest in hydrocarbon exploration in the Brooks Range foothills has increased considerably, resulting in an opportunity to compile previous studies as well as to carry out additional field studies to address specific structural and stratigraphic problems. In addition, ongoing mapping and structural and stratigraphic studies in the Siksikpuk River - Tiglukpuk Creek area to the west (Peapples and others, 2007) have resulted in some revised structural and stratigraphic concepts that have proven to be applicable to the Cobblestone Creek-May Creek map area and the adjacent Kanayut River map area to the west. Supplemental_Information: This geodatabase is organized according to the AK GeMS mapping schema Hendricks, M.D., Ekberg, P.G., Athey, J.E., Wyatt, W.C., Willingham, A.L., and Naibert, T.J., 2021, AK GeMS data dictionary: A description of the Alaska geologic mapping schema: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 170, 10 p. https://doi.org/10.14509/30669. The distribution package includes ESRI fonts and style files, along with usage instructions. Further documentation of the symbology is provided by Ekberg, P.G., Hendricks, M.D., and Athey, J.E., 2021, AK GeMS symbology: A description of the AK GeMS style file: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 169, 7 p. https://doi.org/10.14509/30584 Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2009 Ending_Date: 2022 Currentness_Reference: ground condition Status: Progress: In work Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -150.640466 East_Bounding_Coordinate: -149.948587 North_Bounding_Coordinate: 68.759550 South_Bounding_Coordinate: 68.356982 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Theme_Keyword: Allochthon Theme_Keyword: Alluvium Theme_Keyword: Argillite Theme_Keyword: Barite Theme_Keyword: Bentonite Theme_Keyword: Breccia Theme_Keyword: Buchia Theme_Keyword: Chert Theme_Keyword: Clay Theme_Keyword: Claystone Theme_Keyword: Coal Theme_Keyword: Colluvium Theme_Keyword: Conglomerate Theme_Keyword: Contact Theme_Keyword: Coquina Theme_Keyword: Dolomite Theme_Keyword: Energy Section Maps of Interest Theme_Keyword: Faults Theme_Keyword: Gas Theme_Keyword: Geologic Theme_Keyword: Geologic Map Theme_Keyword: Geology Theme_Keyword: Gravel Theme_Keyword: Graywacke Theme_Keyword: Halobia Theme_Keyword: Hydrocarbon Theme_Keyword: Limestone Theme_Keyword: Marine Theme_Keyword: Marl Theme_Keyword: Monotis Theme_Keyword: Mudstone Theme_Keyword: Nonmarine Theme_Keyword: Olistostrome Theme_Keyword: Pebble Theme_Keyword: Pelecypods Theme_Keyword: Petroleum Theme_Keyword: Porosity Theme_Keyword: Quartz Theme_Keyword: Rocks Theme_Keyword: Sand Theme_Keyword: Sandstone Theme_Keyword: Shale Theme_Keyword: Siderite Theme_Keyword: Silt Theme_Keyword: Siltstone Theme_Keyword: Surficial Theme_Keyword: Talus Theme_Keyword: Tectonics Theme_Keyword: Till Theme_Keyword: Tuff Theme_Keyword: Turbidite Theme_Keyword: Turbidites Place: Place_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Place_Keyword: Arc Mountain Place_Keyword: Brooks Range Place_Keyword: Cascade Creek Place_Keyword: Chandler Lake Quadrangle Place_Keyword: Cobblestone Creek Place_Keyword: Itkillik River Place_Keyword: Kuhsuman Creek Place_Keyword: May Creek Place_Keyword: Nanushuk Lake Place_Keyword: Nanushuk River Place_Keyword: North Slope Place_Keyword: Peregrine Creek Stratum: Stratum_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Stratum_Keyword: Buchia Limestone Coquina Stratum_Keyword: Cobblestone Member Stratum_Keyword: Fortress Mountain Formation Stratum_Keyword: Imnaitchiak Chert Stratum_Keyword: Kayak Shale Stratum_Keyword: Lisburne Group Stratum_Keyword: Nanushuk Formation Stratum_Keyword: Okpikruak Formation Stratum_Keyword: Otuk Formation Stratum_Keyword: Seabee Formation Stratum_Keyword: Siksikpuk Formation Stratum_Keyword: Torok Formation Stratum_Keyword: Tuluvak Formation Stratum_Keyword: Unnamed Phosphatic-Manganiferous Shale Temporal: Temporal_Keyword_Thesaurus: Walker, J.D., Geissman, J.W., Bowring, S.A, and Babcock, L.E., comp., 2012, Geologic Time Scale v. 4.0: Geological Society of America Temporal_Keyword: Albian Temporal_Keyword: Aptian Temporal_Keyword: Barremian Temporal_Keyword: Berriasian Temporal_Keyword: Cenomanian Temporal_Keyword: Coniacian Temporal_Keyword: Cretaceous Temporal_Keyword: Jurassic Temporal_Keyword: Middle Triassic Temporal_Keyword: Mississippian Temporal_Keyword: Pennsylvanian Temporal_Keyword: Permian Temporal_Keyword: Quaternary Temporal_Keyword: Triassic Temporal_Keyword: Turonian Temporal_Keyword: Valanginian 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. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: (907)451-5020 Contact_Facsimile_Telephone: (907)451-5050 Contact_Electronic_Mail_Address: 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. Data_Set_Credit: This geologic map was funded by the State of Alaska. Geologic field investigations by: C.G. Mull (1982, 1985, 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1999, 2000, 2001); E.E. Harris (1985, 1999, 2000, 2001); Paige R. Peapples (2001); D.L. LePain, R.A. Kirkham, and R.R. Reifenstuhl (1999, 2000, 2001); Jerry Siok (1983, 1985); D.A. Bodnar (1983); K.E. Adams and M.L. Buckingham (1985); D.W. Houseknecht, C.J. Schenk, and T.J. Ryherd (2001); M.D. Myers (1989, 1999); M.T. Whalen and M.B. Mickey (2000). Digital cartography by Paige R. Delaney. This map was converted to GeMS and then finalized by Alec D. Wildland and Mike Hendricks. Cross_Reference: Citation_Information: Originator: Dumoulin, J.A. Originator: Whalen, M.T. Publication_Date: 2015 Title: Reconnaissance investigation of the Lisburne Group in the Cobblestone Creek area, Chandler Lake Quadrangle, Alaska Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2015-2 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 18 p Online_Linkage: https://doi.org/10.14509/29403 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Attribute fields within each feature class are populated using the map symbology and corresponding applicable values from the GeMS and AK GeMS specifications. When known, certainty in attribute interpretation is indicated in the relevant fields. Attribute accuracy varies throughout the map and is scale-dependent. Logical_Consistency_Report: All polygon features were topologically validated according to the AK GeMS geologic mapping schema specifications. Completeness_Report: This publication is a DGGS Preliminary Interpretive Report (PIR). A PIR provides timely release of maps and reports with a preliminary interpretation of geology or analytical data. Several scientists familiar with the geology of map area reviewed this product for general readability and logical consistency, but it has not undergone technical peer review. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Certainty in feature boundaries or location varies throughout the map. Data fields within each feature class and the accompanying orientation and location confidence lookup tables record the authors' degree of confidence in the location of applicable features. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Ekberg, P.G. Originator: Hendricks, M.D. Originator: Athey, J.E. Publication_Date: 2021 Title: AK GeMS symbology: A description of the AK GeMS style file Series_Information: Series_Name: Miscellaneous Publication Issue_Identification: MP 169 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 7 p Online_Linkage: https://doi.org/10.14509/30584 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2021 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Ekberg, P.G. and others, 2021 Source_Contribution: GIS analysis and digital cartography Source_Information: Source_Citation: Citation_Information: Originator: Hendricks, M.D. Originator: Ekberg, P.G. Originator: Athey, J.E. Originator: Wyatt, W.C. Originator: Willingham, A.L. Originator: Naibert, T.J. Publication_Date: 2021 Title: AK GeMS data dictionary: A description of the Alaska geologic mapping schema Series_Information: Series_Name: Miscellaneous Publication Issue_Identification: MP 170 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 10 p Online_Linkage: https://doi.org/10.14509/30669 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2021 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Hendricks, M.D. and others, 2021 Source_Contribution: GIS analysis and digital cartography Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey National Cooperative Geologic Mapping Program Publication_Date: 2020 Title: GeMS (Geologic Map Schema) - A standard format for the digital publication of geologic maps Series_Information: Series_Name: Techniques and Methods Issue_Identification: TM 11-B10 Publication_Information: Publication_Place: United States Publisher: U.S. Geological Survey Other_Citation_Details: 1 p Online_Linkage: https://dggs.alaska.gov/pubs/id/30585 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2020 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020 Source_Contribution: GIS analysis and digital cartography Process_Step: Process_Description: Geologic mapping - Geologic mapping took place during three-week field seasons during June-July 2004 and 2005. Mappers recorded observations in field notebooks and on aerial photographs and topographic maps, predominantly at 1:63,360 scale. Bedrock mapping involved using aerial photographs and topographic maps on a daily basis for checking geologic contacts and units. Stations were located using aerial photographs, topographic maps, and altimeters. In most instances, GPS devices were used. Stations were also plotted by hand on stable mylar topographic bases, and coordinates were determined by digitizing. The final map was compiled using field observations and all known geologic data from previous work in the quadrangle. Data were compiled on multiple layers of stable mylar at 1:63,360 scale and then scanned and digitized. The conceptual framework for the geology incorporates key ideas from preexisting literature with new data and interpretations developed from field mapping and analytical findings. The accompanying map provides a comprehensive bibliographic reference list of prior works used to identify and delineate rock units and structural elements. Process_Date: 2009 Process_Step: Process_Description: GIS analysis and digital cartography - This data distribution package's geologic and geographic features were organized and attributed according to the AK GeMS geologic mapping schema. The data were programmatically transformed to provide download options in three formats: (1) an AK GeMS data package that includes the complete AK GeMS database and associated files, (2) a GeMS data package that is a conversion of the AK GeMS database into the base GeMS standard published by the USGS, and (3) a shapefile data package that includes two simple shapefile representations of the data. Source_Used_Citation_Abbreviation: Ekberg, P.G. and others, 2021 Source_Used_Citation_Abbreviation: Hendricks, M.D. and others, 2021 Source_Used_Citation_Abbreviation: U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020 Process_Date: 2022 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: vector Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 5 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -153 Latitude_of_Projection_Origin: 0 False_Easting: 500000.000000 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: .00000001 Ordinate_Resolution: .00000001 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: NAD27 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 294.9786982 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: cobblestone_ak_gems_db_pkg Entity_Type_Definition: Geodatabase, layer files, style files, and fonts Entity_Type_Definition_Source: DGGS Entity_Attribute_Layer_Name: cobblestone_ak_gems_db_pkg Detailed_Description: Entity_Type: Entity_Type_Label: cobblestone_gems_db_pkg Entity_Type_Definition: Geodatabase, layer files, style files, and fonts Entity_Type_Definition_Source: DGGS Entity_Attribute_Layer_Name: cobblestone_gems_db_pkg Detailed_Description: Entity_Type: Entity_Type_Label: cobblestone_gems_shapefile_pkg Entity_Type_Definition: Shapefiles and open data files Entity_Type_Definition_Source: DGGS Entity_Attribute_Layer_Name: cobblestone_gems_shapefile_pkg Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: (907)451-5020 Contact_Facsimile_Telephone: (907)451-5050 Contact_Electronic_Mail_Address: 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. Resource_Description: PIR 2009-5 Distribution_Liability: 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. Standard_Order_Process: Non-digital_Form: DGGS publications are available as free online downloads or you may purchase paper hard-copies or digital files on CD/DVD or other digital storage media by mail, phone, fax, or email from the DGGS Fairbanks office. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard. Turnaround time is 1-2 weeks unless special arrangements are made and an express fee is paid. Shipping charge will be the actual cost of postage and will be added to the total amount due. Contact us for the exact shipping amount. Fees: Contact DGGS for current pricing Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: geodatabase Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.14509/19661 Fees: Free download Metadata_Reference_Information: Metadata_Date: 20221227 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Person: Simone Montayne Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: (907)451-5020 Contact_Facsimile_Telephone: (907)451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Use_Constraints: If the user has modified the data in any way they are obligated to describe the types of modifications they have performed in the supporting metadata file. User specifically agrees not to imply that changes they made were approved by the Alaska Department of Natural Resources or Division of Geological & Geophysical Surveys. Metadata_Extensions: Online_Linkage: https://dggs.alaska.gov/metadata/dggs.ext Profile_Name: dggs metadata extensions