Vlad Constantin Manea

Universidad Nacional Autónoma de México

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Marina Manea

Universidad Nacional Autónoma de México

V. Kostoglodov

Universidad Nacional Autónoma de México

Shoichi Yoshioka

Kobe University

Luca Ferrari

Universidad Nacional Autónoma de México

Michael Gurnis

California Institute of Technology

Granville Sewell

The University of Texas at El Paso

Yingfeng Ji

Chinese Academy of Sciences

Nobuaki Suenaga

Kobe University

L. Beşuţiu

Institute of Solid Mechanics

Mihai Pomeran

Romanian Academy

Cooperative Institutions

Universidad Nacional Autónoma de México

California Institute of Technology

Centre National de la Recherche Scientifique

Scripps Institution of Oceanography

Planetary Science Institute

University of California, San Diego

ETH Zurich

United States Geological Survey

Autonomous University of Queretaro

University of Oregon

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Subduction zone evolution and low viscosity wedges and channels

Earth and Planetary Science Letters (2007)

Vlad Constantin Manea Michael Gurnis

Slab

Asthenosphere

Slab window

Wedge (geometry)

10.1016/j.epsl.2007.08.030

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Citations (120)

Horizontal subduction and truncation of the Cocos Plate beneath central Mexico

Geophysical Research Letters (2008)

Xyoli Pérez‐Campos Young‐Hee Kim Allen Husker Paul M. Davis R. W. Clayton

Based on analysis of data from a trans‐Mexico temporary broadband seismic network centered on Mexico City, we report that the subducting Cocos Plate beneath central Mexico is horizontal, and tectonically underplates the base of the crust for a distance of 250 km from the trench. It is decoupled from the crust by a very thin low viscosity zone. The plate plunges into the mantle near Mexico City but is truncated at a depth of 500 km, probably due to an E‐W propagating tear in the Cocos slab. Unlike the shallow slab subduction in Peru and Chile, there is active volcanism along the Trans Mexican Volcanic Belt (TMVB) that lies much further inland than regions to either side where subduction dip is not horizontal. Geodynamical modeling indicates that a thin weak layer such as imaged by the seismic experiment can explain the flat subduction geometry.

Slab

Slab window

Volcanic belt

Volcanic arc

Underplating

10.1029/2008gl035127

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Citations (284)

Plate tectonic reconstructions with continuously closing plates

Computers & Geosciences (2011)

Michael Gurnis M. Turner Sabin Zahirovic Lydia DiCaprio S. Spasojevic

Polygon (computer graphics)

Point in polygon

Margin (machine learning)

10.1016/j.cageo.2011.04.014

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Citations (272)

Vrancea Seismic Zone As An Unstable Triple Junction: New Evidence From Observations And Numerical Modelling

Proceedings (2017)

L. Beşuţiu Vlad Constantin Manea Mihai Pomeran

Summary To avoid shortcomings of the current models attempting to explain genesis of the Vrancea intermediate-depth earthquakes the alternative model of an unstable triple junction (VTJ) had been previously proposed mainly based on a speculative approach. The paper deals with results of the latest research, including high-resolution seismic tomography obtained through the joint inversion of seismic and gravity data, and numerical modelling of the mantle convection that brings new evidence to support VTJ as a valid alternative for Vrancea intermediate-depth seismicity geodynamic setting. Of a special interest proved to be the advanced numerical modelling run on a High Performance Computing Cluster own by Solid Earth Dynamics Department in the Institute of Geodynamics of the Romanian Academy that has demonstrated how a stable triple lithospheric contact may transform into an unstable triple junction under the influence of a thermal anomaly even in the absence of differences between the plates velocities.

Triple junction

10.3997/2214-4609.201702541

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Citations (3)

A review of the geodynamic evolution of flat slab subduction in Mexico, Peru, and Chile

Tectonophysics (2016)

Vlad Constantin Manea Marina Manea Luca Ferrari Teresa Orozco-Esquivel R. Valenzuela

Slab

Slab window

Eclogitization

Classification of discontinuities

Flattening

10.1016/j.tecto.2016.11.037

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Citations (115)

A Geodynamical Perspective on the Subduction of Cocos and Rivera plates beneath Mexico and Central America

AGU Spring Meeting Abstracts (2013)

Vlad Constantin Manea Marina Manea Luca Ferrari

Abstract The Middle America subduction zone (MASZ) is one of the world’ most complex convergent margins as it involves the subduction of the Rivera and Cocos young oceanic plates beneath the North American and Caribbean plates and is bounded by the Gulf of California rift and the Panama slab window. Characterized by contorted and unusual slab geometry, irregularly distributed seismicity and volcanism, exceptionally large slow slip events (SSE) and non-volcanic tremors (NVT), this subduction system represents a great natural laboratory for better understanding geodynamic processes at a fundamental level. Based on a solid observational foundation, and incorporating the latest experimental results into a coherent geodynamical framework, we shed light on the main processes controlling the subduction system evolution in this region. The tectonics, volcanism, slab geometry and segmentation along the margin are reviewed from a geodynamical perspective. We proposed and discussed a series of evolutionary scenarios for the Mexican and Central American subduction zones, providing a coherent starting base for future geodynamical modeling studies tailored to this active margin. We discuss comparatively the recently discovered SSEs and NVTs along the MASZ, and try to differentiate among the proposed mechanisms responsible for these observations. Finally we discuss the recent seismic anisotropy observations in a geodynamic context, offering an integrated view of mantle flow pattern along the entire active margin. Although the MASZ as a whole may be considered a fairly complicated region with many unusual features and sometimes controversial interpretations, its complexity and unusual characteristics can improve our knowledge about the linkage between deep and surface processes associated with subduction zone dynamics.

Volcanic arc

geodynamics

Slab window

Eclogitization

North American Plate

Source

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Citations (0)

High ³ He/ ⁴ He in central Panama reveals a distal connection to the Galápagos plume

Proceedings of the National Academy of Sciences (2021)

David V. Bekaert Esteban Gazel Stephen J. Turner M. D. Behn J. Marten de Moor

Significance We report the discovery of anomalously high 3 He/ 4 He in “cold” geothermal fluids of central Panama, far from any active volcanoes. Combined with independent constraints from lava geochemistry, mantle source geochemical anomalies in Central America require a Galápagos plume contribution that is not derived from hotspot track recycling. Instead, these signals likely originate from large-scale transport of Galápagos plume material at sublithospheric depths. Mantle flow modeling and geophysical observations further indicate these geochemical anomalies could result from a Galápagos plume-influenced asthenospheric “mantle wind” that is actively “blowing” through a slab window beneath central Panama. The lateral transport of plume material represents a potentially widespread yet underappreciated mechanism that scatters enriched geochemical signatures in mantle domains far from plumes.

Hotspot (geology)

Mantle plume

Asthenosphere

Radiogenic nuclide

10.1073/pnas.2110997118

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Citations (21)

Deep embrittlement and complete rupture of the lithosphere during the Mw 8.2 Tehuantepec earthquake

Nature Geoscience (2018)

Diego Melgar Angel Ruiz‐Angulo E. S. M. Garcia Marina Manea Vlad Constantin Manea

Slab

Slow earthquake

Brittleness

10.1038/s41561-018-0229-y

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Citations (51)

Delamination of sub-crustal lithosphere beneath the Isthmus of Tehuantepec, Mexico: Insights from numeric modelling

Journal of Geodynamics (2018)

Marina Manea Vlad Constantin Manea Luca Ferrari Teresa Orozco-Esquivel

Hotspot (geology)

Delamination

Slab

10.1016/j.jog.2018.09.002

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Citations (7)

Seismogenesis of dual subduction beneath Kanto, central Japan controlled by fluid release

Scientific Reports (2017)

Yingfeng Ji Shoichi Yoshioka Vlad Constantin Manea Marina Manea

Abstract Dual subduction represents an unusual case of subduction where one oceanic plate subducts on top of another, creating a highly complex tectonic setting. Because of the complex interaction between the two subducted plates, the origin of seismicity in such region is still not fully understood. Here we investigate the thermal structure of dual subduction beneath Kanto, central Japan formed as a consequence of a unique case of triple trench junction. Using high-resolution three-dimensional thermo-mechanical models tailored for the specific dual subduction settings beneath Kanto, we show that, compared with single-plate subduction systems, subduction of double slabs produces a strong variation of mantle flow, thermal and fluid release pattern that strongly controls the regional seismicity distribution. Here the deepening of seismicity in the Pacific slab located under the Philippine Sea slab is explained by delaying at greater depths (~150 km depth) of the eclogitization front in this region. On the other hand, the shallower seismicity observed in the Philippine Sea slab is related to a young and warm plate subduction and probably to the presence of a hot mantle flow traveling underneath the slab and then moving upward on top of the slab.

Slab

Eclogitization

Slab window

Eurasian Plate

10.1038/s41598-017-16818-z

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Citations (16)