LA-ICP-MS uranium-lead zircon data from 14 igneous and meta-igneous rock samples collected during the 2025 field season in the Yukon-Tanana Upland, Alaska. The dataset contains simultaneous U-Pb ages and trace and rare-earth element concentrations from single zircon spots. It was produced by the State of Alaska's DGGS Mineral Resources Section in support of USGS Earth MRI geologic mapping projects focused on potential critical mineral resources.
Use Cases
- Delineate the timing of igneous activity based on uranium-lead geochronologic data.
- Support geologic mapping and tectonic interpretation based on zircon trace and rare-earth element concentrations.
- Conduct mineralization studies in east-central Alaska based on data from a 24,000 km² study area.
- Integrate new geochronologic data with existing DGGS, USGS, industry, and academic datasets.
Strengths
- Data includes simultaneous U-Pb ages and trace/rare-earth element concentrations from the same zircon volumes.
- Focuses on a 24,000 km² study area selected as the most likely area for new potential mineral resources in Alaska.
- Supports specific USGS Earth MRI Steese and Chena geologic mapping projects.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data may reflect geographic bias inherent to the Yukon-Tanana Upland focus area.
Provenance
- Source
- State of Alaska, DGGS Mineral Resources Section.
- Collection Method
- Data collected during 2025 helicopter- and vehicle-supported field investigations, analyzed by laser-ablation inductively coupled plasma mass spectrometry.
- Time Range
- 2025 field season.
- Freshness
- Last updated 2026-03-15 03:17:22.530920.
- Geography
- Steese-White Mountains and Chena project areas, Yukon-Tanana Upland, Alaska.