A likely geological record of deep tremor and slow slip events from a subducted continental broken formation.

ABSTRACT: Fluids in subduction zones play a key role in controlling seismic activity, drastically affecting the rheology of rocks, triggering mineral reactions, and lowering the effective stress. Fluctuating pore pressure is one important parameter for the switch between brittle and ductile deformation, thus impacting seismogenesis. Episodic tremor and slow slip events (ETS) have been proposed as a common feature of the geophysical signature of subduction zones. Their geological record, however, remains scanty. Only the detailed and further characterization of exhumed fossil geological settings can help fill this knowledge gap. Here we propose that fluctuating pore pressure linked to metamorphic dehydration reactions steered cyclic and ETS-related brittle and ductile deformation of continental crust

SUBMITTER: Giuntoli F 

PROVIDER: S-EPMC8927582 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature