Filters: Tags: East Lime Creek Conglomerate (X) > partyWithName: U.S. Geological Survey Southwest Region: Geology, Geophysics, and Geochemistry Science Center (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Christopher S Holm-Denoma Geology, Geophysics, and Geochemistry Science Center U.S. Geological Survey - ScienceBase Laura S Pianowski Energy and Minerals James E Evans U.S. Geological Survey Categories Data (1) Tag Types Theme (1) Place (1) Harvest Set (1) USGS Scientific Topic Keyword (1) Tag Schemes USGS Thesaurus (1) Geographic Names Information System (1) Geolex Thesaurus (1) View Results as: JSON ATOM CSV

U-Pb detrital zircon data for: lower Paleozoic sedimentary rocks near Silverton, CO USA This Laser ablation ICPMS U-Pb detrital zircon data set supports mapping and stratigraphic interpretations of the Upper Devonian Ignacio Formation in southwestern Colorado (Silverton area). All samples were collected from a measured stratigraphic section called "Sultan Creek South" located at 37.710010 and -107.67530 (Evans and others, 2019). The Ignacio Formation was previously interpreted as Cambrian, but evidence that it is Devonian includes reexamined fossil data and detrital zircon U-Pb geochronology. The Ignacio Formation has a stratigraphic trend of detrital zircon ages shifting from a single ca. 1.7 Ga age peak to bimodal ca. 1.4 Ga and ca. 1.7 Ga age peaks, which represents local source-area unroofing history.... Categories: Data; Tags: Colorado, Detrital Zircon, East Lime Creek Conglomerate, GGG, Geochronology, All tags... Geology, Geophysics, and Geochemistry Science Center, Ignacio Formation, LA-ICPMS, Laser-Ablation Inductively-Coupled Mass Spectrometry, Microbeam Laboratory, Radiometric Dating, SEM-cathodoluminescence, San Juan Mountains, Silverton, Stratigraphy, Stratigraphy, Sultan Creek, Th, Thorium, U-Pb, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Uranium-Lead, Fewer tags