1 / 9

Active Tectonics and Basin Range: Geochemical and Geophysical Data Analysis

Explore spatio-temporal progression in active tectonics through a study of basin range ignimbrite sweep, flood basalt events, and geochemical data analysis. Discover patterns of seismic activity and volcanic eruptions, examining the evolution of the Earth's crust over different time scales.

anastasia-mosley
Télécharger la présentation

Active Tectonics and Basin Range: Geochemical and Geophysical Data Analysis

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Active Tectonics Basin and Range p. 438-441

  2. Geophysical Data 1 gal = (1 cm/s²)

  3. Geochemical Data

  4. Active Tectonics

  5. Spatio-temporal progression • 50 and 20 Ma Ignimbrite sweep • HLP Geomorphic • 17 and 15 Ma Flood Basalt • widespread • 700 km suture • 7.5-8 Ma Flood Basalt • increasing focus • Age progressive Silicics • Younger than 12 Ma rhyolites • with > 72 % SiO2

  6. Cascade and HLP isotopic similarities low K-tholeiites Fe Rich Rhyolites End at Newberry Quaternary mafic 35-42 km crust Rattlesnake Tuff

  7. Ash-Flow Tuffs hundreds kmc 9.7 Ma Devine Canyon 195 kmc 8.4 Ma Prater Creek 7.05 Ma Rattlesnake 2x Devine? 7 to 8 Ma W. Harney Basin Dome Complexes Basaltic pulse initiated?

More Related