{"action":"create","ckan_id":null,"date_created":"Wed, 28 Jan 2026 04:39:47 GMT","date_finished":null,"harvest_job_id":"57389b8d-43cf-462e-ae72-8757a66f3509","harvest_source_id":"f4c7bbab-c7ef-4277-a7d3-c25b78854814","id":"0b046546-1820-4b44-8a23-3ca87a626849","identifier":"https://dggs.alaska.gov/webpubs/metadata/PIR2021-1.xml","parent_identifier":null,"source_hash":"12f1284212126ad7a05c0b74c5a3eed858d326652bcadd02177feed2bfbf9476","source_raw":"\r\n\r\n\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\tLarsen, J.F.\r\n\t\t\t\tWaythomas, C.F.\r\n\t\t\t\tMulliken, K.M.\r\n\t\t\t\tIzbekov, Pavel\r\n\t\t\t\tCameron, C.E.\r\n\t\t\t\t2021\r\n\t\t\t\tMajor-element oxide, trace element, and glass compositional analyses from Holocene to historical eruptions from Pavlof Volcano, Alaska\r\n\t\t\t\treport, tabular data\r\n\t\t\t\t\r\n\t\t\t\t\tPreliminary Interpretive Report\r\n\t\t\t\t\tPIR 2021-1\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\tFairbanks, Alaska, United States\r\n\t\t\t\t\tAlaska Division of Geological & Geophysical Surveys\r\n\t\t\t\t\r\n\t\t\t\t20 p.\r\n\t\t\t\thttps://doi.org/10.14509/30580\r\n\t\t\t\r\n\t\t\r\n\t\t\r\n\t\t\tDuring the summers of 2017 and 2018, Alaska Volcano Observatory (AVO) geologists from the University of Alaska, Fairbanks (UAF), the U.S. Geological Survey (USGS), and the Alaska Division of Geological & Geophysical Surveys (DGGS) conducted fieldwork at Pavlof Volcano (55.4173 N, -161.8937 W), on the Alaska Peninsula, Alaska. The fieldwork was conducted in support of geologic mapping and tephrostratigraphy, to improve the documentation of recent Pavlof eruptions, and to better assess hazards associated with Pavlof eruptions. As a result, samples of lava and various pyroclasts (mainly bombs and lapilli) were collected for whole rock geochemistry analyses. This report includes whole rock major- and trace-element data from lava and bomb samples from the 1996, 2013, 2014, and 2016 eruptions, along with samples of lava and lapilli fall deposits, presumed to be of Holocene age, collected from outcrops around Pavlof and Pavlof Sister volcanoes. We also include electron probe microanalyzer (EPMA) data from tephra glass samples from the 1986 (AT-2822), 1996 (AT-2823), 2007 (AT-2824), and 2013 (AT-2821) eruptions. These samples were initially analyzed at the USGS office in Menlo Park and were re-analyzed for this report in the Advanced Instrumentation Laboratory (AIL) at UAF for comparison. Tephra EPMA glass data from the 2016 eruption, analyzed in the AIL, is also included from sample AT-3680. The analytical data tables associated with this report are available in digital format as comma-separated value (CSV) files. Users can access the complete report and digital data from the DGGS website: http://doi.org/10.14509/30580.\r\n\t\t\tThis investigation was conducted in support of geologic mapping and tephrostratigraphy, to improve the documentation of recent Pavlof eruptions, and to better assess hazards associated with Pavlof eruptions.\r\n\t\t\t>tephra-glass-data: Electron probe microanalyzer (EPMA) data from tephra glass samples.\t\r\n\t\t\t\t>tephra-whole-rock-data: Whole rock major- and trace-element data from lava and bomb samples from the 1996, 2013, 2014, and 2016 eruptions, along with samples of lava and lapilli fall deposits.\r\n\t\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\t1996\r\n\t\t\t\t\t2016\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\tground condition\r\n\t\t\r\n\t\t\r\n\t\t\tcomplete\r\n\t\t\tNone planned\r\n\t\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\t-162.070760\r\n\t\t\t\t-161.712440\r\n\t\t\t\t55.613730\r\n\t\t\t\t55.371850\r\n\t\t\t\r\n\t\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\tISO 19115 Topic Category\r\n\t\t\t\tgeoscientificInformation\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\tAlaska Division of Geological & Geophysical Surveys\r\n\t\t\t\tAnalyses\r\n\t\t\t\tAshfall\r\n\t\t\t\tBasalt\r\n\t\t\t\tDGGS\r\n\t\t\t\tGeochemistry\r\n\t\t\t\tGeologic\r\n\t\t\t\tGeology\r\n\t\t\t\tGlass\r\n\t\t\t\tHazards\r\n\t\t\t\tIgneous\r\n\t\t\t\tLahar\r\n\t\t\t\tLava Flow\r\n\t\t\t\tMajor Oxides\r\n\t\t\t\tMethods\r\n\t\t\t\tPetrology\r\n\t\t\t\tProvenance\r\n\t\t\t\tRhyolite\r\n\t\t\t\tRocks\r\n\t\t\t\tStratigraphy\r\n\t\t\t\tSurface\r\n\t\t\t\tTephra\r\n\t\t\t\tTephrostratigraphy\r\n\t\t\t\tTrace Elements\r\n\t\t\t\tVolcanic\r\n\t\t\t\tVolcanic Eruption\r\n\t\t\t\tVolcanic Rocks\r\n\t\t\t\tVolcanoes\r\n\t\t\t\tVolcanology\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\tAlaska Division of Geological & Geophysical Surveys\r\n\t\t\t\tAlaska\r\n\t\t\t\tAlaska Peninsula\r\n\t\t\t\tPavlof\r\n\t\t\t\tPavlof Sister\r\n\t\t\t\tPavlof Volcano\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\tWalker, J.D., Geissman, J.W., Bowring, S.A, and Babcock, L.E., comp., 2012, Geologic Time Scale v. 4.0: Geological Society of America\r\n\t\t\t\tHolocene\r\n\t\t\t\tQuaternary\r\n\t\t\t\r\n\t\t\r\n\t\tThis 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).\r\n\t\tAny 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.\r\n\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\tAlaska Division of Geological & Geophysical Surveys\r\n\t\t\t\t\r\n\t\t\t\tMetadata Manager\r\n\t\t\t\t\r\n\t\t\t\t\tmailing and physical\r\n\t\t\t\t\t
3354 College Road
\r\n\t\t\t\t\tFairbanks\r\n\t\t\t\t\tAK\r\n\t\t\t\t\t99709-3707\r\n\t\t\t\t\tUSA\r\n\t\t\t\t\r\n\t\t\t\t(907)451-5020\r\n\t\t\t\t(907)451-5050\r\n\t\t\t\tdggspubs@alaska.gov\r\n\t\t\t\t8 am to 4:30 pm, Monday through Friday, except State holidays\r\n\t\t\t\tPlease 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.\r\n\t\t\t\r\n\t\t\r\n\t\tWe thank Maritime Helicopters and pilot Jared Berman and Egli Air Haul and pilot Sam Egli for efficient and safe transportation in the field. We thank Mary Martin and the Cold Bay Lodge staff for comfortable lodging and excellent meals during our fieldwork. Thanks to Ken Severin for making the UAF AIL facility an excellent analytical resource for AVO EPMA analytical work. Max Kaufmann collected ash samples 16PVMK001a and 16PVMK001b analyzed for this study. The AVO tephra analytical routine was created by Matt Loewen (USGS/AVO), Kristi Wallace (USGS/AVO), and Nathan Graham (UAF) and we are grateful for their efforts to standardize the AVO glass EPMA analytical protocols. This material is based upon work supported by the U.S. Geological Survey in a cooperative agreement with the UAF Geophysical Institute and also under Cooperative Agreement No. G19AC00171 to the Alaska Division of Geological and Geophysical Surveys.\r\n\t\t\r\n\t\t\t\r\n\t\t\t\tCameron, C.E.\r\n\t\t\t\tMulliken, K.M.\r\n\t\t\t\tCrass, S.W.\r\n\t\t\t\tSchaefer, J.R.\r\n\t\t\t\tWallace, K.L.\r\n\t\t\t\t2019\r\n\t\t\t\tAlaska Volcano Observatory geochemical database, version 2\r\n\t\t\t\t\r\n\t\t\t\t\tDigital Data Series\r\n\t\t\t\t\tDDS 8 v. 2\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\tFairbanks, Alaska, United States\r\n\t\t\t\t\tAlaska Division of Geological & Geophysical Surveys\r\n\t\t\t\t\r\n\t\t\t\t22 p\r\n\t\t\t\thttps://doi.org/10.14509/30058\r\n\t\t\t\r\n\t\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\tNye, C.J.\r\n\t\t\t\tBeget, J.E.\r\n\t\t\t\tLayer, P.W.\r\n\t\t\t\tMangan, M.T.\r\n\t\t\t\tMcConnell, V.S.\r\n\t\t\t\tMcGimsey, R.G.\r\n\t\t\t\tMiller, T.P.\r\n\t\t\t\tMoore, R.B.\r\n\t\t\t\tStelling, P.L.\r\n\t\t\t\t2018\r\n\t\t\t\tGeochemistry of some quaternary lavas from the Aleutian Arc and Mt. Wrangell\r\n\t\t\t\t\r\n\t\t\t\t\tRaw Data File\r\n\t\t\t\t\tRDF 2018-1\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\tFairbanks, Alaska, United States\r\n\t\t\t\t\tAlaska Division of Geological & Geophysical Surveys\r\n\t\t\t\t\r\n\t\t\t\t29 p\r\n\t\t\t\thttps://doi.org/10.14509/29843\r\n\t\t\t\r\n\t\t\r\n\t\r\n\t\r\n\t\t\r\n\t\t\tThe analyses reported here reflect the same protocols applied by Nye and others (2018). The analytical precision and accuracy and significant digits of this dataset are consistent with the overview provided by Nye and others (2018). AVO geochemical analyses were re-calibrated in 2007 so that they are time-consistent, and the analyses reported here are internally consistent with data collected post-2007 (Nye and others, 2018).\r\n\t\t\r\n\t\tnot applicable\r\n\t\tThis data release is complete. This publication is released in the DGGS Preliminary Interpretive Report (PIR) series. This series is intended for the timely release of preliminary interpretation of geologic observations and analytical data. The data and interpretations have been technically reviewed, with recognition of the work's limited scope, by one or two scientists familiar with the geologic context.\r\n\t\t\r\n\t\t\t\r\n\t\t\t\tSample location data were collected using the WGS84 datum using a handheld GPS device and recorded in a field notebook at the outcrop, along with documentation of the units sampled, hand sample descriptions, and stratigraphic information. Station and sample metadata were loaded into AVO's Geologic Database of Information on Volcanoes of Alaska (GeoDIVA) and all locations have been converted to NAD83.\r\n\t\t\t\r\n\t\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\tSample collection - Rock samples consisting of dense lava flow interiors, juvenile bombs, and coarse lapilli tephra were collected over two field seasons for whole rock geochemical analyses in support of a geologic map that is currently in preparation by Christopher Waythomas and to characterize very recent eruptions. Dense lava flow and juvenile bomb samples were collected using a sledge hammer, and where possible the samples were chipped in the field to select clean interior regions of the samples for analysis. Some of the flows and bombs were too hard to efficiently chip in the field, and were chipped in the lab after fieldwork was finished. Juvenile samples from the coarse lapilli tephra fall deposits were prepared in the lab after fieldwork was completed.\r\n\t\t\t\t2016\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\tSample preparation and analysis - Samples were analyzed for whole rock major- and trace-elements. A subset of tephra glass samples were also analyzed by electron probe microanalyzer (EPMA). Many of these samples were initially analyzed at the USGS office in Menlo Park (Waythomas and others, 2017) and were re-analyzed for this report in the Advanced Instrumentation Laboratory (AIL) at UAF for comparison. The accompanying report describes sample preparation and analytical methods in detail.\r\n\t\t\t\t2020\r\n\t\t\t\r\n\t\t\r\n\t\r\n\t\r\n\t\tpoint\r\n\t\r\n\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\t0.00001\r\n\t\t\t\t0.00001\r\n\t\t\t\tdecimal degrees\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\tNAD83\r\n\t\t\t\tGRS 80\r\n\t\t\t\t6378137\r\n\t\t\t\t298.257222101000025\r\n\t\t\t\r\n\t\t\r\n\t\r\n\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\ttephra-glass-data\r\n\t\t\t\tElectron probe microanalyzer (EPMA) data from tephra glass samples.\r\n\t\t\t\tDGGS and AVO staff\r\n\t\t\t\ttephra-glass-data\r\n\t\t\t\r\n\t\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\ttephra-whole-rock-data\r\n\t\t\t\tWhole rock major- and trace-element data from lava and bomb samples from the 1996, 2013, 2014, and 2016 eruptions, along with samples of lava and lapilli fall deposits.\r\n\t\t\t\tDGGS and AVO staff\r\n\t\t\t\ttephra-whole-rock-data\r\n\t\t\t\r\n\t\t\r\n\t\r\n\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\tAlaska Division of Geological & Geophysical Surveys\r\n\t\t\t\t\r\n\t\t\t\tMetadata Manager\r\n\t\t\t\t\r\n\t\t\t\t\tmailing and physical\r\n\t\t\t\t\t
3354 College Road
\r\n\t\t\t\t\tFairbanks\r\n\t\t\t\t\tAK\r\n\t\t\t\t\t99709-3707\r\n\t\t\t\t\tUSA\r\n\t\t\t\t\r\n\t\t\t\t(907)451-5020\r\n\t\t\t\t(907)451-5050\r\n\t\t\t\tdggspubs@alaska.gov\r\n\t\t\t\t8 am to 4:30 pm, Monday through Friday, except State holidays\r\n\t\t\t\tPlease 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.\r\n\t\t\t\r\n\t\t\r\n\t\tPIR 2021-1\r\n\t\tThe 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.\r\n\t\t\r\n\t\t\tDGGS 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.\r\n\t\t\tContact DGGS for current pricing\r\n\t\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\treport, tabular-data\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\thttps://doi.org/10.14509/30580\r\n\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\r\n\t\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\tFree download\r\n\t\t\r\n\t\r\n\t\r\n\t\t20210703\r\n\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\tAlaska Division of Geological & Geophysical Surveys\r\n\t\t\t\t\tSimone Montayne\r\n\t\t\t\t\r\n\t\t\t\tMetadata Manager\r\n\t\t\t\t\r\n\t\t\t\t\tmailing and physical\r\n\t\t\t\t\t
3354 College Road
\r\n\t\t\t\t\tFairbanks\r\n\t\t\t\t\tAK\r\n\t\t\t\t\t99709-3707\r\n\t\t\t\t\tUSA\r\n\t\t\t\t\r\n\t\t\t\t(907)451-5020\r\n\t\t\t\t(907)451-5050\r\n\t\t\t\tdggspubs@alaska.gov\r\n\t\t\t\t8 am to 4:30 pm, Monday through Friday, except State holidays\r\n\t\t\t\r\n\t\t\r\n\t\tFGDC Content Standard for Digital Geospatial Metadata\r\n\t\tFGDC-STD-001-1998\r\n\t\tIf 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.\r\n\t\t\r\n\t\t\thttps://dggs.alaska.gov/metadata/dggs.ext\r\n\t\t\tdggs metadata extensions\r\n\t\t\r\n\t\r\n","source_transform":null,"status":"error"}