Search Results - "Peacock, Simon M."

Role of Serpentinized Mantle Wedge in Affecting Megathrust Seismogenic Behavior in the Area of the 2010 M = 8.8 Maule Earthquake by Wang, Kelin, Huang, Taizi, Tilmann, Frederik, Peacock, Simon M., Lange, Dietrich

“…What controls subduction megathrust seismogenesis downdip of the mantle wedge corner (MWC)? We propose that, in the region of the 2010 Mw = 8.8 Maule, Chile,…”
Get full text

Complex Structure in the Nootka Fault Zone Revealed by Double‐Difference Tomography and a New Earthquake Catalog by Merrill, Reid J., Bostock, Michael G., Peacock, Simon M., Schaeffer, Andrew J., Roecker, Steven W.

“…We employ an automatic earthquake detection algorithm to seismic waveforms recorded between the years 2000 and 2020 in southwest British Columbia. 32,121…”
Get full text

Seismic Consequences of Warm versus Cool Subduction Metamorphism: Examples from Southwest and Northeast Japan by Peacock, Simon M., Wang, Kelin

“…Warm and cool subduction zones exhibit differences in seismicity, seismic structure, and arc magmatism, which reflect differences in metamorphic reactions…”
Get full text

On the Stability of Talc in Subduction Zones: A Possible Control on the Maximum Depth of Decoupling Between the Subducting Plate and Mantle Wedge by Peacock, Simon M., Wang, Kelin

“…Geophysical observations including surface heat flow data indicate the subducting slab becomes fully coupled to the overlying mantle wedge at ∼70–80 km depth…”
Get full text

Advances in the thermal and petrologic modeling of subduction zones by Peacock, Simon M

“…In the two decades since Subduction: Top to Bottom was published in 1996, improved analytical and numerical thermal-petrologic models of subduction zones have…”
Get full text

Thermal and metamorphic environment of subduction zone episodic tremor and slip by Peacock, Simon M.

“…Episodic tremor and slip (ETS) have been detected in the Cascadia and southwest Japan subduction zones, where the subducting crust is relatively warm because…”
Get full text

Seismic evidence for overpressured subducted oceanic crust and megathrust fault sealing by Peacock, Simon M, Bostock, Michael G, Audet, Pascal, Christensen, Nikolas I

“…Water and hydrous minerals play a key part in geodynamic processes at subduction zones by weakening the plate boundary, aiding slip and permitting…”
Get full text

Boron isotopic composition of subduction-zone metamorphic rocks by Peacock, Simon M, Hervig, Richard L

“…Many arc lavas contain material derived from subducted oceanic crust and sediments, but it remains unresolved whether this distinctive geochemical signature is…”
Get full text

Formation and Preservation of Brucite and Awaruite in Serpentinized and Tectonized Mantle in Central British Columbia: Implications for Carbon Mineralization and Nickel Mining by Steinthorsdottir, Katrin, Dipple, Gregory M, Cutts, Jamie A, Turvey, Connor C, Milidragovic, Dejan, Peacock, Simon M

“…Abstract The serpentinized and tectonized mantle in the Decar area in central British Columbia, including rocks that host the Baptiste Ni Deposit, consists of…”
Get full text

Fluid Processes in Subduction Zones by Peacock, Simon M.

“…Fluids play a critical role in subduction zones and arc magmatism. At shallow levels in subduction zones ($<40$ kilometers depth), expulsion of large volumes…”
Get full text

Serpentinization of the forearc mantle by Hyndman, Roy D, Peacock, Simon M

“…A wide range of geophysical and geological data indicate that extensive serpentinization in the forearc mantle is both expected and observed. Large volumes of…”
Get full text

Subduction factory 1. Theoretical mineralogy, densities, seismic wave speeds, and H2O contents by Hacker, Bradley R., Abers, Geoffrey A., Peacock, Simon M.

“…We present a new compilation of physical properties of minerals relevant to subduction zones and new phase diagrams for mid‐ocean ridge basalt, lherzolite,…”
Get full text

Tomographic image of low P velocity anomalies above slab in northern Cascadia subduction zone by DAPENG ZHAO, KELIN WANG, ROGERS, Garry C, PEACOCK, Simon M

“…At the Cascadia margin the Juan de Fuca plate is subducting beneath the North America plate, causing active seismicity within both plates. Earthquakes occur…”
Get full text

Subduction factory 2. Are intermediate-depth earthquakes in subducting slabs linked to metamorphic dehydration reactions? by Hacker, Bradley R., Peacock, Simon M., Abers, Geoffrey A., Holloway, Stephen D.

“…New thermal‐petrologic models of subduction zones are used to test the hypothesis that intermediate‐depth intraslab earthquakes are linked to metamorphic…”
Get full text

Hydrous minerals in the mantle wedge and the maximum depth of subduction thrust earthquakes by Peacock, Simon M., Hyndman, Roy D.

“…In many subduction zones the downdip limit of thrust earthquakes approximately coincides with the intersection of the subduction thrust with the forearc…”
Get full text

Thermal structure of the Costa Rica – Nicaragua subduction zone by Peacock, Simon M., Keken, Peter E. van, Holloway, Stephen D., Hacker, Bradley R., Abers, Geoffrey A., Fergason, Robin L.

“…We constructed four high-resolution, finite-element thermal models across the Nicaragua – Costa Rica subduction zone to predict the (i) thermal structure, (ii)…”
Get full text

Thermal models of flat subduction and the rupture zone of great subduction earthquakes by Gutscher, Marc-André, Peacock, Simon M.

“…In subduction zones, the size of the seismogenic zone that ruptures during a great thrust earthquake may be thermally controlled. We have constructed finite…”
Get full text

Seismicity in Cascadia by Bostock, Michael G., Christensen, Nikolas I., Peacock, Simon M.

“…We examine spatio-geometric patterns in the density of seismicity within the Cascadia forearc to gain insight into controls on seismogenesis. Tremor epicenters…”
Get full text

Reply to comment by R. Bousquet et al. on “Subduction factory: 1. Theoretical mineralogy, densities, seismic wave speeds and H2O contents” by Hacker, Bradley R., Abers, Geoffrey A., Peacock, Simon M., Johnston, Scott

Get full text

Viscous forces acting on subducting lithosphere by Winder, R. O., Peacock, Simon M.

“…Subducting lithosphere is driven by gravitational forces and resisted primarily by viscous forces. Three independent types of mantle flow combine to create…”
Get full text