WebFoliated cataclasite at micro-scale. a) general view of the foliated cataclasites, with mm-to sub mm-scale fragments in a foliated fine matrix. Foliation is marked by pressure solution seams and ... WebJun 19, 2024 · The foliation was defined mainly by compositional layering and grain size variations that formed by cataclasis and shearing of individual foliation domains. The most significant microstructural changes in the bulk gouge occurred before and during dynamic weakening (<0.08 m displacement).
Glossary of Fault Rock Terminology - McGill University
WebBecause mylonitisation is incomplete in these rocks, relict grains and textures are apparent, and some protomylonites can resemble foliated cataclasite or even some schists. Phyllonites are phyllosilicate (e.g., chlorite or mica )-rich mylonites. They typically have a well-developed secondary shear (C') fabric. Interpretation [ edit] WebJun 10, 2012 · Fault zone contains foliated cataclasite, fault breccia, black gouge and yellowish gouge. Many clasts of foliated cataclasite and black gouge contained in fault breccia indicate multiple slip events along this fault. But fossils on both sides of fault do not indicate clear age difference and overall displacement along this fault should not be ... bcam adc
“Coseismic Foliations” in Gouge and Cataclasite - Smith - 2024 ...
WebApr 15, 1999 · The cataclasites are cohesive, and can be divided into nonfoliated and foliated cataclasite. The former have a random fabric with fractured fragments ranging from a few tens to a few hundreds of μm in diameter (Fig. 3).The fragments show a random fabric and predominantly consist of quartz and feldspar, with a little biotite, and they have … Webdevelopment of foliated cataclasite and gouge along the Median Tectonic Line (MTL), Nagano Prefecture, SW Japan (Figure 1a). The development of the foliated cata-clasites is compared with that of phyllonites from a more deeply exhumed section of the MTL and with expectations based on a recent, crustal-scale, fault strength model. The WebJul 31, 2024 · The cataclasite foliation is defined by elongated aggregates of clast fragments. Garnet clasts show overgrowth by new grossular-rich garnet near the outer pseudotachylyte (fig. S5A), and diopside clasts display Na-rich growth rims (mineral compositions are presented in table S1 and fig. S6). bcam 7