Normal faulting and mass movement during ridge subduction inferred from porosity transition and zeolitization in the Costa Rica subduction zone

• Main Authors: Hamahashi, Mari, Screaton, Elizabeth, Tanikawa, Wataru, Hashimoto, Yoshitaka, Martin, Kylara, Saito, Saneatsu, Kimura, Gaku
• Other Authors: Earth Observatory of Singapore
• Format: Article
• Language: English
• Published: 2020
• Subjects: Science::Geology; Costa Rica Subduction Zone; Cocos Ridge Subduction
• Online Access: https://hdl.handle.net/10356/143268
• Institution: Nanyang Technological University

Subduction of the buoyant Cocos Ridge offshore the Osa Peninsula, Costa Rica substantially affects the upper plate structure through a variety of processes, including outer forearc uplift, erosion, and focused fluid flow. To investigate the nature of a major seismic reflector (MSR) developed between...