4.8 Article

Deep hydration and lithospheric thinning at oceanic transform plate boundaries

Related references

Note: Only part of the references are listed.
Article Geochemistry & Geophysics

Uppermost Mantle Velocity beneath the Mid-Atlantic Ridge and Transform Faults in the Equatorial Atlantic Ocean

Guilherme W. S. de Melo et al.

Summary: The study successfully estimated spatial variations of upper mantle velocities in the equatorial Atlantic Ocean using Pn phases from regional earthquakes, combined with data from autonomous hydrophones and broadband seismographs. The research revealed differences in upper mantle velocities at ridge-transform scale and between lithospheric ages, demonstrating the effectiveness of long-term deployments in obtaining insightful estimates of uppermost mantle velocities in inaccessible deep ocean regions.

BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA (2021)

Article Geochemistry & Geophysics

Seismic Structure of the St. Paul Fracture Zone and Late Cretaceous to Mid Eocene Oceanic Crust in the Equatorial Atlantic Ocean Near 18°W

Kevin Growe et al.

Summary: Recent studies have challenged the idea that transform zone crust may be magmatically augmented instead of anomalous hydrated lithosphere. Research on the St. Paul fracture zone revealed that the crust along and away from the fracture zone showed almost uniform thickness of 5-6 km, resembling normal oceanic crust.

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH (2021)

Article Multidisciplinary Sciences

Extensional tectonics and two-stage crustal accretion at oceanic transform faults

Ingo Grevemeyer et al.

Summary: Oceanic transform faults, which were previously believed to be conservative two-dimensional strike-slip boundaries, are revealed to be more complex due to deeper seafloor along the faults than their associated fracture zones. Accretion at intersections between oceanic ridges and transform faults is asymmetric, with outside corners showing shallower relief and more extensive magmatism. This leads to a two-stage process of accretion at transform-fault systems, different from other regions along mid-ocean ridges.

NATURE (2021)

Article Multidisciplinary Sciences

Semibrittle seismic deformation in high-temperature mantle mylonite shear zone along the Romanche transform fault

Zhiteng Yu et al.

Summary: Oceanic transform faults, key components of plate tectonics, have been found to host a 10 to 15 kilometer-thick band of microseismicity in depths of 10 to 34 kilometers along the Romanche mega transform fault in the equatorial Atlantic Ocean, associated with a high-temperature mantle. The presence of both shallow and deep earthquakes indicates that substantial deformation is accommodated in the semibrittle mylonitic mantle below the brittle lithosphere, with a rapid westward deepening of seismic activity suggesting strong lateral heterogeneity.

SCIENCE ADVANCES (2021)

Article Geochemistry & Geophysics

A dynamic lithosphere-asthenosphere boundary near the equatorial Mid-Atlantic Ridge

Catherine A. Rychert et al.

Summary: The study reveals evidence of persistent melt in the equatorial Mid-Atlantic Ridge region using ocean bottom seismometer data, which has important implications for plate tectonic theory.

EARTH AND PLANETARY SCIENCE LETTERS (2021)

Article Geology

Serpentinized peridotite versus thick mafic crust at the Romanche oceanic transform fault

Emma P. M. Gregory et al.

Summary: Using seismic data, researchers have found the presence of a Moho and a low-velocity anomaly beneath the Romanche transform valley floor, suggesting the crust may consist of fractured mafic material. The complex and heterogeneous structure of the transform fault could have significant influence on earthquake rupture and alteration processes.

GEOLOGY (2021)

Article Geosciences, Multidisciplinary

Oceanic transform fault seismicity and slip mode influenced by seawater infiltration

Arjun Kohli et al.

Summary: This study investigates the influence of seawater infiltration on seismic activity and slip mode variations in oceanic transform faults through mechanical structure models and numerical simulations.

NATURE GEOSCIENCE (2021)

Article Geochemistry & Geophysics

Eavidence for a Deep Hydrologic Cycle on Oceanic Transform Faults

Arjun H. Kohli et al.

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH (2020)

Article Geochemistry & Geophysics

Fracture-mediated deep seawater flow and mantle hydration on oceanic transform faults

C. Prigent et al.

EARTH AND PLANETARY SCIENCE LETTERS (2020)

Article Geosciences, Multidisciplinary

Back-propagating supershear rupture in the 2016Mw7.1 Romanche transform fault earthquake

Stephen P. Hicks et al.

NATURE GEOSCIENCE (2020)

Article Geosciences, Multidisciplinary

Water-rich sublithospheric melt channel in the equatorial Atlantic Ocean

Fares Mehouachi et al.

NATURE GEOSCIENCE (2018)

Article Geochemistry & Geophysics

The Role of Volatiles in Reactive Melt Transport in the Asthenosphere

Tobias Keller et al.

JOURNAL OF PETROLOGY (2016)

Article Geosciences, Multidisciplinary

Extreme mantle uplift and exhumation along a transpressive transform fault

Marcia Maia et al.

NATURE GEOSCIENCE (2016)

Review Geochemistry & Geophysics

Tectonic significance of serpentinites

Stephane Guillot et al.

TECTONOPHYSICS (2015)

Article Geosciences, Multidisciplinary

Unusually large shear wave anisotropy for chlorite in subduction zone settings

Mainak Mookherjee et al.

GEOPHYSICAL RESEARCH LETTERS (2014)

Review Geosciences, Multidisciplinary

Continental transforms: A view from the Alpine Fault

Richard J. Norris et al.

JOURNAL OF STRUCTURAL GEOLOGY (2014)

Article Geochemistry & Geophysics

The deep structure of the North Anatolian Fault Zone

Andreas Fichtner et al.

EARTH AND PLANETARY SCIENCE LETTERS (2013)

Article Geochemistry & Geophysics

Thermal-mechanical behavior of oceanic transform faults: Implications for the spatial distribution of seismicity

Emily Roland et al.

GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS (2010)

Article Geochemistry & Geophysics

Geologically current plate motions

Charles DeMets et al.

GEOPHYSICAL JOURNAL INTERNATIONAL (2010)

Article Geochemistry & Geophysics

Age, spreading rates, and spreading asymmetry of the world's ocean crust

R. Dietmar Mueller et al.

GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS (2008)

Article Geology

Thermal structure of oceanic transform faults

Mark D. Behn et al.

GEOLOGY (2007)

Article Geochemistry & Geophysics

Thermal structure of oceanic and continental lithosphere

D McKenzie et al.

EARTH AND PLANETARY SCIENCE LETTERS (2005)

Article Geochemistry & Geophysics

A new parameterization of hydrous mantle melting

RF Katz et al.

GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS (2003)

Review Geochemistry & Geophysics

An updated digital model of plate boundaries

P Bird

GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS (2003)

Article Geochemistry & Geophysics

Composition and microstructure of magma bodies from effective medium theory

MAJ Taylor et al.

GEOPHYSICAL JOURNAL INTERNATIONAL (2002)

Article Multidisciplinary Sciences

Earthquake slip on oceanic transform faults

RE Abercrombie et al.

NATURE (2001)

Article Geochemistry & Geophysics

Crustal structure of the southeast Greenland margin from joint refraction and reflection seismic tomography

J Korenaga et al.

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH (2000)

Article Geochemistry & Geophysics

Shallow mantle temperatures under Europe from P and S wave tomography

S Goes et al.

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH (2000)