U.S. flag

An official website of the United States government

icon-dot-gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

icon-https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Spatial Extent of Data

USGS Data Source

USGS Thesaurus Keywords

ISO 19115 Topic Category

Place Keywords

Zircon Trace Element Data for Igneous Units Related to Mineralization in the Eastern Yukon-Tanana Upland and nearby areas, Eastern Alaska

From 2017-2019, framework metallogenic studies were completed in the eastern Yukon-Tanana upland in eastern Alaska. Numerous previously undated plutons known or suspected to contain components of porphyry, epithermal, and intrusion-related gold systems and associated deposit types were sampled for age and zircon trace element determinations between the Black Mountain area and the Yukon border, north of the Tanana River and south of the Yukon River. A collection of 54 samples were collected by Douglas Kreiner (USGS, Alaska Science Center). Zircon grains were separated from each sample. The samples were examined by U-Pb analysis by laser ablation-inductively coupled plasma mass spectrometry (LA-ICP-MS) in a USGS laboratory in Denver, CO. These geochronologic data are reported in a separate USGS data release. The zircon samples were later analyzed for trace element characteristics by Douglas Kreiner using the Sensitive High Resolution Ion Microprobe with Reverse-Geometry (SHRIMP-RG) at the Stanford-USGS laboratory in Palo Alto, California. The samples represent several discrete periods of magmatic activity, ranging from 56.5-360.3 Ma. The Paleozoic ages are of host rocks that were previously unidentified and collected for regional framework geology. The bulk of analyzed samples are between 68-72 Ma. Other specific periods of mineralization range from 100-112 Ma and 180-211 Ma.

Get Data and Metadata
Author(s) Douglas C Kreiner orcid, Jorge A Vazquez orcid
Publication Date 2022-05-17
Beginning Date of Data 2022
Ending Date of Data 2022
Data Contact
DOI https://doi.org/10.5066/P9Q6GYMH
Citation Kreiner, D.C., and Vazquez, J.A., 2022, Zircon Trace Element Data for Igneous Units Related to Mineralization in the Eastern Yukon-Tanana Upland and nearby areas, Eastern Alaska: U.S. Geological Survey data release, https://doi.org/10.5066/P9Q6GYMH.
Metadata Contact
Metadata Date 2023-10-11
Related Publication
Citations of these data

Loading https://doi.org/10.5382/econgeo.4999

Access public
License http://www.usa.gov/publicdomain/label/1.0/
Loading...
Harvest Source: Alaska Science Center
Harvest Date: 2025-03-14T04:02:43.800Z