Controls on tectonic accretion versus erosion in subduction zones: Implications for the origin and recycling of the continental crust

  title={Controls on tectonic accretion versus erosion in subduction zones: Implications for the origin and recycling of the continental crust},
  author={Peter D. Clift and Paola Vannucchi},
  journal={Reviews of Geophysics},
Documenting the mass flux through convergent plate margins is important to the understanding of petrogenesis in arc settings and to the origin of the continental crust, since subduction zones are the only major routes by which material extracted from the mantle can be returned to great depths within the Earth. Despite their significance, there has been a tendency to view subduction zones as areas of net crustal growth. Convergent plate margins are divided into those showing long‐term landward… 

Supplementary material to "The effect of sediments on the dynamics and accretionary style of subduction margins"

Abstract. Subduction zones represent the only major pathway by which continental material can be returned to the Earth's mantle. Constraining the sediments mass flux through subduction zones is

Subduction zone processes and crustal growth mechanisms at Pacific Rim convergent margins: modern and ancient analogues

Abstract Continents grow mainly through magmatism, relamination, accretionary prism development, sediment underplating, tectonic accretion of seamounts, oceanic plateaus and oceanic lithosphere, and

Arc-continent collisions, sediment recycling and the maintenance of the continental crust

Abstract Subduction zones are both the source of most new continental crust and the locations where crustal material is returned to the upper mantle. Globally the total amount of continental crust

Subduction erosion and arc volcanism

Tectonic or subduction erosion refers to the removal of upper-plate material from the forearc at convergent margins. Subduction erosion has been suggested to represent a major process associated with

Hydrogeological system of erosional convergent margins and its influence on tectonics and interplate seismogenesis

Fluid distribution in convergent margins is by most accounts closely related to tectonics. This association has been widely studied at accretionary prisms, but at half of the Earth's convergent

Tectonic accretion versus erosion along the southern Chile trench: Oblique subduction and margin segmentation

The southernmost tip of South America is an active continental margin where oblique convergence between plates, transcurrent motion, and tectonic rotation on land make the geodynamic setting more

Subduction zone recycling processes and the rock record of crustal suture zonesThis article is one of a series of papers published in this Special Issue on the theme Lithoprobe — parameters, processes, and the evolution of a continent.

Offshore observations at modern ocean-margin subduction zones (OMSZs) reveal that bodies of accreted material are commonly volumetrically small or missing, that crustal thinning and subsidence (3–5




At ocean margins where two plates converge, the oceanic plate sinks or is subducted beneath an upper one topped by a layer of terrestrial crust. This crust is constructed of continental or island arc

Initiation of subduction zones: implications for arc evolution and ophiolite development

  • D. Karig
  • Geology
    Geological Society, London, Special Publications
  • 1982
Summary The initial location of trenches with respect to continental margins is a critical factor in the nature of the forearc region and its subsequent evolution, as well as for the interpretation

Bathymetric and Tectonic Evolution of the Southern Mexico Active Margin, Deep Sea Drilling Project Leg 66

The development of active margins through time occurs either by the accretion of sediments and ocean crust derived from the subducted plate onto the upper plate (e.g., Seely et al., 1974) or by

Fast rates of subduction erosion along the Costa Rica Pacific margin: Implications for nonsteady rates of crustal recycling at subduction zones

[1] At least since the middle Miocene (∼16 Ma), subduction erosion has been the dominant process controlling the tectonic evolution of the Pacific margin of Costa Rica. Ocean Drilling Program Site

Fate of sediment during plate convergence at the Mediterranean Ridge accretionary complex: Volume balance of mud extrusion versus subduction and/or accretion

Drilling results from two mud volcanoes on the Mediterranean Ridge accretionary complex as well as extensive geophysical surveys have provided new insights about the geometry of these domes at depth.

Development of the accretionary prism along Peru and material flux after subduction of Nazca Ridge

Results from Ocean Drilling Program Leg 112 indicated tectonic erosion of the Peruvian convergent margin during subduction of the Nazca Ridge followed by renewed accretion against the erosional scar.

Sediment subduction, subduction erosion, and strain regime in the northern South Sandwich forearc

[1] The first swath bathymetry and side-scan sonar imagery from the South Sandwich forearc reveals detailed seafloor morphology, tectonic fabric, and sedimentary features in an area where plate

Subduction erosion along the Middle America convergent margin

From seismic images, erosion by seamount tunnelling and removal of large rock lenses of a distending upper plate are identified, indicating that erosion may extend along much of the Middle America convergent margin.

The Makran Continental Margin: Structure of a Thickly Sedimented Convergent Plate Boundary: Convergent Margins: Field Investigations of Margin Structure and Stratigraphy

Two long refraction lines parallel with the structural strike show that the Moho of the subducting oceanic Arabian plate dips north beneath the Makran accretionary prism at an angle of less than 2°.

Slow rates of subduction erosion estimated from subsidence and tilting of the Tonga forearc

The convergent margins of the western Pacific are marked by widespread tectonic erosion of the overriding plate by the subducting oceanic lithosphere. At Ocean Drilling Program Site 841 on the