Detachment zones of Cordilleran metamorphic core complexes: thermal, fluid and metasomatic regimes

Localisation of ductile and brittle shear zones along the Szentlőrinc-1 well in the Mecsekalja Zone using quartz microstructural and well-log data

“…Comparable structures have since been found in numerous places such as the Cordillera of Western North America (Kerrich 1988;Lister and Davis 1989;Foster and Raza 2002), the Whipple Mountains, southeastern California (Davis 1988;Lister and Davis 1989;Stockli et al 2006) and the Buckskin Mountains, western Arizona (Davis et al 1979;Heidrick and Wilkins 1980;Brady 2002). Detachment faults and metamorphic core complexes are also well-known structures in the metamorphic basement of the Pannonian Basin, even close to the studied well (Tari et al 1992;Posgay et al 1996;Tari et al 1999;M Tóth et al 2000;Schubert and M Tóth 2001;Zachar and M Tóth 2004).…”

Elemental transport upon hydration of basic schists during regional metamorphism: Geochemical evidence from the Sanbagawa metamorphic belt, Japan

“…To a lesser extent, Sr and Cu also have relatively good correlations with LOI (p(t) = 0.24-0.27, R 2 LOI = 0.28-0.30) compared to other elements. These elements (LILE (Cs, Rb, K, Ba, Sr), transition metal (Cr, Ni, Cu) and Li, B) have been identified as fluid-mobile elements based on high-pressure experiments and observations of natural samples (e.g., Kerrich, 1988;Bebout and Barton, 1993;Kessel et al, 2005). The plus values of C i hydration for Li, B, K, Cr, Ni, Rb, Sr, Cs and Ba indicate addition of elements by hydration, while the minus value for Cu indicates removal of Cu during hydration.…”

Timing and effect of detachment-related potassium metasomatism on 40Ar/39Ar ages from the Windous Butte Formation, Grant Range, Nevada

“…At Picacho Peak, Kerrich and Rehrig ( 1987) and Kerrich (1988) use oxygen isotopes and concluded that two fluid reservoirs were involved in alteration of the lowerand upper-plate rocks. Their studies show an upward transition from high to low temperatures and from ductile creep to brittle fracturing.…”