Skip to main content
U.S. flag

An official website of the United States government

Data

Browse real-time data, data releases, provisional data and more. 

Data Management

Data Management

Data Releases

Data Releases

Real-time Data

Real-time Data

All Data

40Ar/39Ar data from the Old Mine Park area, Trumbull, Connecticut

This data release includes 40Ar/39Ar data from the U.S. Geological Survey for samples from Old Mine Park Area, Trumbull, Connecticut. Mineral samples were collected by Robert Wintsch and Harold Moritz. Potassium-bearing mineral grains were separated from the bulk sample and analyzed by argon geochronology at the U.S. Geological Survey Bascom ARgon Dating (BARD) Laboratory in Reston, Virginia. The

Electron microprobe and 40Ar/39Ar isotopic data from west-central New Hampshire

This dataset accompanies planned publication 'Unmixing multiple metamorphic muscovite age populations with powder X-ray diffraction and 40Ar/39Ar analysis'. The 40Ar/39Ar and electron microprobe data are from samples adjacent to a lower greenschist facies shear zone in western New Hampshire. The geochronology coupled with the electron microprobe data provide a petrochronologic framework for the ro

Two-dimensional HEC-RAS models and topo-bathymetric datasets for the Willamette River, Oregon

This dataset contains two-dimensional hydraulic models throughout the Willamette River, extending from the McKenzie River confluence, near Eugene, to the city of Newberg. The study reach is separated into five individual models to simplify tributary inflow boundary conditions and for run-time efficiency. These models were developed to assess juvenile salmonid habitat at streamflows ranging from ty