Using apatite to resolve the age and protoliths of mid-crustal shear zones: A case study from the Taxaquara Shear Zone, SE Brazil
Sign Up to like & getrecommendations! Published in 2020 at "Lithos"
DOI: 10.1016/j.lithos.2020.105817
Abstract: Abstract Shear zones accommodate strain and facilitate migration of hydrothermal fluid and magma through the crust. Unravelling the deformation history of shear zones requires correspondence between the closure temperature of mineral geochronometers and the temperature… read more here.
Keywords: protoliths mid; shear zone; shear zones; crustal shear ... See more keywords
Seismic imaging of a mid-crustal low-velocity layer beneath the northern coast of the South China Sea and its tectonic implications
Sign Up to like & getrecommendations! Published in 2020 at "Physics of the Earth and Planetary Interiors"
DOI: 10.1016/j.pepi.2020.106573
Abstract: Abstract Low-velocity layer (LVL) within the continental crust is usually closely associated with tectonic events, thus it may reflect ongoing processes or offer a chance to backtrack the evolutional history. Mid-crustal LVL has been reported… read more here.
Keywords: lvl; low velocity; velocity; northern coast ... See more keywords
Interplay between seismic fracture and aseismic creep in the Woodroffe Thrust, central Australia – Inferences for the rheology of relatively dry continental mid-crustal levels
Sign Up to like & getrecommendations! Published in 2019 at "Tectonophysics"
DOI: 10.1016/j.tecto.2018.10.024
Abstract: Abstract The over 600 km long Woodroffe Thrust developed at lower to mid-crustal levels during the intracontinental Petermann Orogeny at ca. 560–520 Ma. Ductile deformation with a top-to-north shear sense was accommodated along a shallowly (≤30°) south-dipping… read more here.
Keywords: crustal levels; rheology; mid crustal; woodroffe thrust ... See more keywords
Crustal melting beneath orogenic plateaus: Insights from 3-D thermo-mechanical modeling
Sign Up to like & getrecommendations! Published in 2019 at "Tectonophysics"
DOI: 10.1016/j.tecto.2019.03.014
Abstract: Abstract Mid-crustal melting is widely documented under orogenic plateaus. However, the mechanism for its generation and its role in the evolution of orogenic plateaus remain poorly understood. Here we investigate the physical controls and consequences… read more here.
Keywords: mechanical modeling; thermo mechanical; mid crustal; orogenic plateaus ... See more keywords
Strain shadow “megapores” in mid-crustal ultramylonites
Sign Up to like & getrecommendations! Published in 2023 at "Geology"
DOI: 10.1130/g51128.1
Abstract: Mylonitic shear zones are important fluid conduits in the Earth's crust. They host transient and permeable porosity that facilitates fluid transfer and controls fluid-rock interaction. Here we present microstructural observations from a mid-crustal ultramylonite with… read more here.
Keywords: strain shadow; megapores mid; mid crustal; shadow megapores ... See more keywords