Record of mega-earthquakes in subduction thrusts: The black fault rocks of Pasagshak Point (Kodiak Island, Alaska)

• Published in: Geological Society of America Bulletin
• Main Authors: MENEGHINI, FRANCESCA, Di Toro, G., Rowe, C. D., Moore, J. C., Tsutsumi, A., Yamaguchi, A.
• Other Authors: Meneghini, Francesca
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2010
• Subjects: SEISMIC SLIP; GENERATED PSEUDOTACHYLYTES; ACCRETIONARY COMPLEX; CRYSTAL MORPHOLOGY; GRANULAR MATERIAL; RUPTURE; FLOW; FLUIDIZATION; PLAGIOCLASE; FRICTION; Rock X; Kodiak; Alaska
• Online Access: http://hdl.handle.net/11568/786943; https://doi.org/10.1130/B30049.1

On Kodiak Island, Alaska, decimeter-thick black fault rocks are at the core of foliated cataclasites that are tens of meters thick. The cataclasites belong to mélange zones that are regarded as paleodécollements active at 12–14 km depth and 230–260 °C. Each black layer is mappable for tens of mete...