Identification_Information: Citation: Citation_Information: Originator: Herriott, T.M. Originator: Nye, C.J. Originator: Reger, R.D. Originator: Wartes, M.A. Originator: LePain, D.L. Originator: Gillis, R.J. Publication_Date: 2014 Title: Geologic context, age constraints, and sedimentology of a Pleistocene volcaniclastic succession near Mount Spurr volcano, south-central Alaska Geospatial_Data_Presentation_Form: digital-data, report Series_Information: Series_Name: Report of Investigation Issue_Identification: RI 2014-2 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 35 p. Online_Linkage: http://dx.doi.org/10.14509/27261 Description: Abstract: A physiographically prominent, approximately 40 square km plateau lies roughly 20 km east of Mount Spurr volcano, northwestern Cook Inlet region, Alaska, and comprises the preserved remnant of a volcaniclastic succession, designated in this study as map unit Qvc. Although this readily mappable package of volcaniclastic rocks has been recognized in numerous studies during the past five decades, uncertainties regarding its age and origin have persisted. We describe the general characteristics of the volcaniclastic plateau, provide new age constraints for deposits, present lithofacies descriptions and interpretations of the volcaniclastic strata, and synthesize our observations and lithofacies analysis to propose an environment of transport and deposition for the unit. This digital data distribution package provides the latitude and longitude coordinates of the field stations noted within the report and a Microsoft Excel file of the U-Pb (LA-ICP-MS) detrital zircon geochronology results tables found in Appendix B of the report. Purpose: A physiographically prominent, approximately 40 square km plateau lies roughly 20 km east of Mount Spurr volcano, northwestern Cook Inlet region, Alaska, and comprises the preserved remnant of a volcaniclastic succession, designated in this study as map unit Qvc. Although this readily mappable package of volcaniclastic rocks has been recognized in numerous studies during the past five decades, uncertainties regarding its age and origin have persisted. We describe the general characteristics of the volcaniclastic plateau, provide new age constraints for deposits, present lithofacies descriptions and interpretations of the volcaniclastic strata, and synthesize our observations and lithofacies analysis to propose an environment of transport and deposition for the unit. This digital data distribution package provides the latitude and longitude coordinates of the field stations noted within the report and a Microsoft Excel file of the U-Pb (LA-ICP-MS) detrital zircon geochronology results tables found in Appendix B of the report. This work was conducted as a component of a multi-year Cook Inlet basin analysis program aimed at developing a better understanding of the near-margin stratigraphic and structural components of the Cook Inlet petroleum system. Supplemental_Information: The DGGS metadata standard extends the FGDC standard to include elements that are required to facilitate our internal data management. These elements, referred to as "layers," group and describe files that have intrinsic logical or topological relationships and correspond to subdirectories within the data distribution package. The metadata layer provides an FGDC metadata file and may include other documentation files. Attribute information for each data layer is described in this metadata file under the "Entity_and_Attribute_Information" section. Data layer contents: >sample-location-details: Field station name, sample name, and location coordinates >border: A polygon that encompasses the maximum geographic extent of the data observations >detrital-zircon-data: Laboratory analytical results for detrital zircon samples Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2009 Ending_Date: 2014 Currentness_Reference: ground condition Status: Progress: complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -151.942470 East_Bounding_Coordinate: -151.834300 North_Bounding_Coordinate: 61.304500 South_Bounding_Coordinate: 61.287830 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Theme_Keyword: Age Dates Theme_Keyword: Alluvial Theme_Keyword: Alluvial Deposits Theme_Keyword: Bedrock Theme_Keyword: Bedrock Geology Theme_Keyword: Debris Flow Theme_Keyword: Debris Flow Deposit Theme_Keyword: Depositional Environment Theme_Keyword: Depositional Environments Theme_Keyword: Detrital Zircon Theme_Keyword: Facies Analysis Theme_Keyword: Geochronology Theme_Keyword: Geological Process Theme_Keyword: Geology Theme_Keyword: Lahar Theme_Keyword: Lahar Runout Flow Theme_Keyword: Liquefaction Theme_Keyword: Paleoenvironment Theme_Keyword: Paleogeography Theme_Keyword: STATEMAP Project Theme_Keyword: Sediment Transport Theme_Keyword: Sedimentary Theme_Keyword: Sedimentary Rocks Theme_Keyword: Sedimentation Theme_Keyword: Sedimentology Theme_Keyword: U-Pb Theme_Keyword: Volcaniclastics Place: Place_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Place_Keyword: Capps Glacier Place_Keyword: Mount Spurr Place_Keyword: Tyonek Quadrangle 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: Cenozoic Temporal_Keyword: Pleistocene Temporal_Keyword: Quaternary 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: GIS 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_Electronic_Mail_Address: dggsgis@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays Data_Set_Credit: Funding for work in the Tyonek-Capps Glacier area was provided by the State of Alaska, the National Cooperative Geologic Mapping Program's STATEMAP program under award numbers 09AC00177 and G10AC00321 (administered by the USGS), and program receipts from industry sponsors. Cook Inlet Region, Inc. (CIRI), granted permission to conduct fieldwork in the study area. Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Detrital zircon samples were analyzed for U-Pb geochronology by Apatite to Zircon, Inc., via laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS). We do not include grains 109833_100, 109833_104, and 109833_75 (sample 09TMH323A; see strike-through marks) in plots presented in the report (fig. 7) due to their exceedingly large 2-sigma errors. Questions regarding the organization or labelling of the data file can be best answered by the originating lab. Logical_Consistency_Report: not applicable Completeness_Report: We provide the analytical data for all of the detrital zircon samples were analyzed. The tabluated results are in the the format specified by the lab. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Location coordinates were obtained using handheld GPS units with a typical error of 7 m or less. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Hults, C.P. Originator: Wilson, F.H. Originator: Donelick, R.A. Originator: O'Sullivan, P.B. Publication_Date: 2013 Title: Two flysch belts having distinctly different provenance suggest no stratigraphic link between the Wrangellia composite terrane and the paleo-Alaskan margin Series_Information: Series_Name: Lithosphere Issue_Identification: v. 5, no. 6 Publication_Information: Publication_Place: Boulder, CO Publisher: Geological Society of America Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2013 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Hults, C.P. and others, 2013 Source_Contribution: detrital zircon analysis Process_Step: Process_Description: Sample collection - We collected two detrital zircon samples from sand-rich volcaniclastic strata of Qvc. Samples 09TMH323A and 09TMH342A were composited from material collected at seven and three field localities, respectively, with the former collected from the uppermost horizons of Qvc that crop out along the northern plateau edge and the latter collected from the lowermost strata exposed immediately south of the Capps Glacier moraine. An approximately 200-m-thick section of Qvc strata lies between the two sampled intervals. Sample names are adopted after the first field locality where composite sampling began for that stratigraphic interval (for example, 09TMH323). Several kilograms of medium- to coarse-grained sand were collected for each composited sample. Samples were collected with a rock hammer and a small folding shovel, taking care to avoid incorporating modern sediment. Process_Date: 2009 Process_Step: Process_Description: Detrital zircon analysis - Detrital zircon samples were analyzed for U-Pb geochronology by Apatite to Zircon, Inc., via laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) at Washington State University in Pullman, Washington. One hundred eight zircons were analyzed from sample 09TMH323A, yielding 62 concordant ages; three pre-Proterozoic age grains were discarded due to exceedingly large errors (200%). One hundred ten zircons were analyzed from sample 09TMH342A, yielding 95 concordant ages. During the current study, only nine individual zircons yielded ages older than 200 Ma (disregarding the three pre-Proterozoic grains noted above) and we do not apply a discordance filter to any of the data. All results are plotted using Isoplot 4.15, and errors are reported at 2-sigma. Note that the accompanying report provides a more comprehensive discussion of the analytical methods and applicable references. Source_Used_Citation_Abbreviation: Hults, C.P. and others, 2013 Process_Date: 2010 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: point Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.00001 Longitude_Resolution: 0.00001 Geographic_Coordinate_Units: decimal degrees Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 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: ri2014-2-sample-location-details.csv Entity_Type_Definition: Field station name, sample name, and location coordinates Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys (DGGS) Entity_Attribute_Layer_Name: sample-location-details Attribute: Attribute_Label: Station Attribute_Definition: Label assigned to identify the sampling sites for the composited samples. Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Unrepresentable_Domain: Follows DGGS convention YYAAA9999-99a: YY=last two digits of year, AAA=geologist initials (one to three characters), 9999-99a (1-4 digits, followed by optional dashes and alpha characters). Samples were collected by Trystan M. Herriott (TMH). Attribute: Attribute_Label: Sample Attribute_Definition: Label assigned to specify the composited sample. Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Unrepresentable_Domain: Follows DGGS convention YYAAA9999-99a: YY=last two digits of year, AAA=geologist initials (one to three characters), 9999-99a (1-4 digits, followed by optional dashes and alpha characters). Samples were collected by Trystan M. Herriott (TMH). Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: NULL Enumerated_Domain_Value_Definition: A sample was not collected at this field station. Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: Latitude Attribute_Definition: Latitude, NAD27 Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 61.28783 Range_Domain_Maximum: 61.3045 Attribute_Units_of_Measure: decimal degrees Attribute: Attribute_Label: Longitude Attribute_Definition: Longitude, NAD27 Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -151.94247 Range_Domain_Maximum: -151.8343 Attribute_Units_of_Measure: decimal degrees Detailed_Description: Entity_Type: Entity_Type_Label: ri2014-2-border.shp Entity_Type_Definition: A polygon that encompasses the maximum geographic extent of the data observations Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys (DGGS) Entity_Attribute_Layer_Name: border Detailed_Description: Entity_Type: Entity_Type_Label: ri2014-2-detrital-zircon-data.xlsx Entity_Type_Definition: Laboratory analytical results for detrital zircon samples Entity_Type_Definition_Source: Apatite to Zircon, Inc. Entity_Attribute_Layer_Name: detrital-zircon-data Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys 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 (http://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: RI 2014-2 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: ASCII tabular files Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://dx.doi.org/10.14509/27261 Fees: Free download Metadata_Reference_Information: Metadata_Date: 20140501 Metadata_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 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: http://www.dggs.alaska.gov/metadata/dggs.ext Profile_Name: dggs metadata extensions