LA-ICP-MS uranium lead geochronologic data of zircon from igneous and meta-igneous rocks in the Mount Harper project area, Eagle, Tanacross, Mount Hayes, and Big Delta quadrangles, Alaska

Description

LA-ICP-MS uranium lead geochronologic data of zircon from igneous and meta-igneous rocks in the Mount Harper project area, Eagle, Tanacross, Mount Hayes, and Big Delta quadrangles, Alaska, Raw Data File 2025-4, provides uranium-lead (U-Pb) geochronologic data from single zircon spots, analyzed using laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS). Alaska Division of Geological & Geophysical Surveys (DGGS) staff collected zircon data from 31 samples of igneous and meta-igneous rocks, primarily selected during the 2022 field season in support of the Earth Mapping Resources Initiative (Earth MRI) Mount Harper project. Three of these samples were analyzed to support geologic interpretation in the Taylor Mountain map area. One sample was collected during the 2018 field season in support of the Richardson mining district mapping project, which has since been incorporated into the Mount Harper project area. The goal of this dataset is to determine the age of igneous activity to support geologic mapping efforts, tectonic interpretations, and characterization of mineralization in the Yukon-Tanana Uplands of Interior Alaska. Crystallization age data are organized in the age summary data table with our interpreted crystallization ages, sample location information, and sample descriptions. The zircon grain data table contains isotopic and elemental data for each zircon spot analyzed. Both tables have accompanying data dictionaries. These data and report are available from the DGGS website: http://doi.org/10.14509/31552.

Resources

Name Format Description Link
0 table https://doi.org/10.14509/31552
0 https://doi.org/10.14509/31552
0 https://doi.org/10.14509/31123
0 https://doi.org/10.14509/30911
0 https://doi.org/10.14509/31096
0 https://doi.org/10.14509/30963
0 https://doi.org/10.14509/30910
0 https://doi.org/10.14509/31534
0 https://doi.org/10.14509/31089

Tags

  • goodpaster mining district
  • dike
  • actinolite
  • late devonian
  • billy creek
  • diorite
  • plutonic
  • sand creek
  • clearwater creek
  • methods
  • corda creek
  • fortymile mining district
  • resource information
  • sand lake
  • rocks
  • plutons
  • resources
  • sample location
  • felsic
  • buckskin creek
  • geochronology
  • twentyfive mile creek
  • granite
  • redmond creek
  • mineral resources
  • joseph creek
  • moose creek
  • monte cristo creek
  • metamorphic deposit
  • gerstle river
  • minton creek
  • early jurassic
  • minerals
  • central creek
  • geologic
  • willow creek
  • t lake
  • progressive creek
  • healy river
  • richardson mining district
  • analyses
  • volkmar lake
  • earth mri
  • fish creek
  • mount harper
  • michigan creek
  • bedrock
  • greenschist
  • early carboniferous
  • tanana river
  • geology
  • metamorphic
  • bedrock geology
  • mineral exploration
  • dggs
  • allanite
  • shaw creek dome
  • garnet
  • uncle sam creek
  • salcha river
  • calcite
  • gold creek
  • early cretaceous
  • strategic minerals
  • chlorite
  • volkmar river
  • economic geology
  • igneous rocks
  • shamrock creek
  • rapid creek
  • junction creek
  • goodpaster river
  • analyses and sampling
  • resource assessment
  • sample location map
  • eagle creek
  • hornblende
  • serpentine creek
  • enterprise creek
  • u-pb
  • plutonic rocks
  • gabbro
  • fairbanks mining district
  • birch lake
  • taylor creek
  • epidote
  • molly creek
  • democrat creek
  • metamorphism
  • shaw creek
  • lab methods
  • paleocene
  • late cretaceous
  • age dates
  • mosquito creek
  • metamorphic rocks
  • sevenmile creek
  • lenant creek
  • exploration
  • logging cabin creek
  • gold run
  • granodiorite
  • boulder creek
  • gunnysack creek
  • white creek
  • big swede creek
  • tenmile creek
  • divide creek
  • analytical results
  • feldspar
  • gold run creek
  • canyon creek
  • igneous
  • porphyry creek
  • analytical lab results

Topics

  • Local Government

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