Skip to main content
U.S. flag

An official website of the United States government

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

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.

Skip to content

U-Pb zircon data for: The Poncha Pass and Deadman Creek areas, northern Sangre de Cristo Mountains of south-central Colorado

Metadata Updated: October 28, 2023

Geologic mapping, characterization of geologic structures, and sampling for geochronology was completed in two areas of the northwestern Sangre de Cristo Mountains from 2011 through 2017. This data release provides the raw analytical data, metadata and sample information for 20 zircon U-Pb age analyses from laser ablation-inductively coupled plasma mass spectrometry (LA-ICPMS). The two areas include the Poncha Pass area where the entire 71/2’ Poncha Pass quadrangle and parts of five other quadrangles (Mount Ouray, Maysville, Salida West, Salida East, and Wellsville) were mapped at a scale of 1:24,000 (see Minor and others, 2019). The Deadman thrust fault is the second area, approximately 80 km southwest of the Poncha Pass area, and has been preliminarily mapped at a scale of 1:2,000. Ten new U-Pb ages were determined for each area and include Proterozoic metavolcanic, metasedimentary, and metaigneous rocks as well as non-metamorphosed felsic intrusive rocks of upper Mesozoic-Cenozoic age in the Poncha area. Rocks dated in the Deadman area include Proterozoic basement rocks, detrital zircons in Paleozoic sedimentary rocks, and Mesozoic- Cenozoic felsic intrusive rocks.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources


Metadata Created Date June 1, 2023
Metadata Updated Date October 28, 2023

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date October 28, 2023
Publisher U.S. Geological Survey
Identifier USGS:5d002021e4b0573a18f517d5
Data Last Modified 20200910
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id 36786e7f-34ed-4a29-bafa-233d6b604554
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -106.0905,37.89419,-105.6003,38.50759
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash f9cebfb7f7519dec327348c76a00173b3855ba8f4243d84e20d923cf88185f0d
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -106.0905, 37.89419, -106.0905, 38.50759, -105.6003, 38.50759, -105.6003, 37.89419, -106.0905, 37.89419}

Didn't find what you're looking for? Suggest a dataset here.