Fabric heterogeneity in the Mojave lower crust and lithospheric mantle in southern California
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geophysical Research"
DOI: 10.1002/2017jb014280
Abstract: We use xenoliths from young cinder cones in the eastern Mojave region of southern California to investigate deformation fabrics and their implications for strain localization, lithospheric viscosity, and controls on mineral lattice preferred orientations (LPO)… read more here.
Keywords: southern california; mantle; california; lower crustal ... See more keywords
Zircon U‐Pb Dating of a Lower Crustal Shear Zone: A Case Study From the Northern Sector of the Ivrea‐Verbano Zone (Val Cannobina, Italy)
Sign Up to like & getrecommendations! Published in 2018 at "Tectonics"
DOI: 10.1002/2017tc004638
Abstract: A geochronological study was performed on zircon grains from a middle‐lower crustal shear zone exposed in the northern sector of the Ivrea‐Verbano Zone (Southern Alps, Italy) for the first time. The shear zone developed at… read more here.
Keywords: zone; zircon; lower crustal; shear zone ... See more keywords
Crystallographic preferred orientations of plagioclase via grain boundary sliding in a lower-crustal anorthositic ultramylonite
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Earth Sciences"
DOI: 10.1007/s00531-019-01749-z
Abstract: To clarify the rheological properties and deformational mechanisms that operate within lower-crustal shear zones, we analyzed deformation microstructures and fabrics in plagioclase grains from high-strain regions of intrafolial drag folds of an anorthositic ultramylonite from… read more here.
Keywords: grain boundary; lower crustal; crystallographic preferred; preferred orientations ... See more keywords
Thermal and petrologic constraints on lower crustal melt accumulation under the Salton Sea Geothermal Field
Sign Up to like & getrecommendations! Published in 2017 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2017.02.027
Abstract: Abstract In the Salton Sea region of southern California (USA), concurrent magmatism, extension, subsidence, and sedimentation over the past 0.5 to 1.0 Ma have led to the creation of the Salton Sea Geothermal Field (SSGF)—the… read more here.
Keywords: geothermal field; salton; lower crustal; sea geothermal ... See more keywords
Fault behavior and lower crustal rheology inferred from the first seven years of postseismic GPS data after the 2008 Wenchuan earthquake
Sign Up to like & getrecommendations! Published in 2018 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2018.05.020
Abstract: Abstract Long-term and wide-area geodetic observations may allow identifying distinct postseismic deformation processes following large earthquakes, and thus can reveal fault behavior and permit quantifying complexities in lithospheric rheology. In this paper, the first 7… read more here.
Keywords: lower crustal; rheology; postseismic deformation; afterslip ... See more keywords
Source characteristics of the 2017 Mw6.4 Moijabana, Botswana earthquake, a rare lower-crustal event within an ancient zone of weakness
Sign Up to like & getrecommendations! Published in 2019 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2018.11.007
Abstract: Abstract The 2017 Moijabana earthquake in central Botswana (Mw6.4) was a large and deep event for a continental interior and occurred in a region with little historical seismicity. Based on InSAR measurements of surface deformation… read more here.
Keywords: earthquake; lower crustal; zone weakness; event ... See more keywords
Hafnium isotopic record of mantle-crust interaction in an evolving continental magmatic system
Sign Up to like & getrecommendations! Published in 2020 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2020.116100
Abstract: Abstract Tracing the origin and evolution of magmas on their pathway through the lithosphere is key to understanding the magmatic processes that eventually produce eruptions. For ancient magmatic provinces, isotope-geochemical tracers are powerful tools to… read more here.
Keywords: hafnium isotopic; lower crustal; mantle crust; crust interaction ... See more keywords
Tibetan dichotomy exposed in the Canadian Shield: A lower crustal perspective
Sign Up to like & getrecommendations! Published in 2020 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2020.116375
Abstract: Abstract It has been hypothesized that much of central and eastern Tibet coincides with gravitationally driven flow of weak lower continental crust. Magnetotelluric profiles throughout Tibet reveal several deep crustal zones of high conductivity inferred… read more here.
Keywords: canadian shield; crust; lower crustal; shear zone ... See more keywords
Lateral subhorizontal middle to lower crustal flow in response to continental collision: Evidence from the Diancang Shan complex along the Ailao Shan-Red River belt, Southeastern Tibetan Plateau
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Structural Geology"
DOI: 10.1016/j.jsg.2020.104234
Abstract: Abstract How middle to lower crust in Southeastern Tibetan Plateau flowed in response to the Indian-Eurasian continental collision remains hotly debated in the last decades. Metamorphic complexes along crustal mobile zones, e.g., the Diancang Shan… read more here.
Keywords: lower crustal; complex; collision; middle lower ... See more keywords
Lower crustal seismic activity in the Adana Basin (Eastern Mediterranean): Possible connection to gravitational flexure
Sign Up to like & getrecommendations! Published in 2018 at "Tectonophysics"
DOI: 10.1016/j.tecto.2018.02.015
Abstract: Abstract High quality broadband data, together with the application of the double difference relocation technique, has been used to study the characteristics of the lower crustal seismicity in the Adana Basin, in southwestern Turkey. Deep… read more here.
Keywords: adana basin; lower crustal; crustal seismic; basin ... See more keywords
Thermal, rheological and kinematic conditions for channelized lower crustal flow in a threshold example
Sign Up to like & getrecommendations! Published in 2019 at "Tectonophysics"
DOI: 10.1016/j.tecto.2019.01.002
Abstract: Abstract Lower crustal flow zones occur in large and hot orogens and rifts, where they occur in association with large areas possessing high gravitational potential energy (GPE) and low lower crust viscosity. Lower crustal flow… read more here.
Keywords: lower crustal; crustal flow; lower crust; channelized lower ... See more keywords