Magnetotelluric Imaging of Lower Crustal Melt and Lithospheric Hydration in the Rocky Mountain Front Transition Zone, Colorado, USA

Magnetotelluric Imaging of Lower Crustal Melt and Lithospheric Hydration in the Rocky Mountain Front Transition Zone, Colorado, USA

We present an electrical resistivity model of the crust and upper mantle from two‐dimensional (2‐D) anisotropic inversion of magnetotelluric data collected along a 450 km transect of the Rio Grande rift, southern Rocky Mountains, and High Plains in Colorado, USA. Our model provides a window into the...

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Veröffentlicht in:Journal of geophysical research. Solid earth 2017-12, Vol.122 (12), p.9489-9510
Hauptverfasser: Feucht, D. W., Sheehan, A. F., Bedrosian, P. A.
Format: Artikel
Sprache:eng
Schlagworte:
Basalt
Cenozoic
Computational fluid dynamics
Earth mantle
Electrical conductivity
Electrical resistivity
Evolution
Fluids
Geophysics
Great Plains
High plains
Hydration
Imaging techniques
Lithosphere
Magma
magnetotellurics
mantle hydration
Minerals
Moisture content
Mountains
partial melt
Plains
Rocky Mountains
Tectonics
Transition zone
Two dimensional models
Upper mantle
Volatiles
Water content
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Beschreibung
Zusammenfassung:We present an electrical resistivity model of the crust and upper mantle from two‐dimensional (2‐D) anisotropic inversion of magnetotelluric data collected along a 450 km transect of the Rio Grande rift, southern Rocky Mountains, and High Plains in Colorado, USA. Our model provides a window into the modern‐day lithosphere beneath the Rocky Mountain Front to depths in excess of 150 km. Two key features of the 2‐D resistivity model are (1) a broad zone (~200 km wide) of enhanced electrical conductivity (
ISSN:2169-9313
2169-9356
DOI:10.1002/2017JB014474