Actively evolving microplate formation by oblique collision and sideways motion along strike-slip faults: An example from the northeastern Caribbean plate margin

Mann, Paul; Taylor, Frederick W.; Edwards, R. Lawrence; Ku, Teh-Lung

doi:10.1016/0040-1951(94)00268-e

Cited by 247 publications

(346 citation statements)

References 60 publications

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“…[79] In the Pannonian basin of the eastern Alps and Carpathians, Royden [1988Royden [ , 1993, Mann et al [1995], and Martin [2007] summarize a history of collisions and changing direction of plate convergence between the Pannonian plate and Eurasia that leads to the fragmentation of the Pannonian plate and opening of the extensional Pannonian back arc area ( Figure A16). Each terminal collision event resulted in a shift in the direction of plate convergence and progressive fragmentation of the Pannonian plate during its subsequent reorientation.…”

Section: A314 Pannonian Basin Of Eastern Alps and Carpathiansmentioning

confidence: 99%

“…[80] The interior of the Pannonian basin is segmented by strike-slip faults and deep basins that accommodate anticlockwise rotation of a northern interior block and clockwise rotation of a southern interior block. Mann et al [1995] and Mann [1997] relate the highly transtensional nature of strike-slip faults bounding microplates in the back arc area to large-scale rotation of the elongate bounding blocks as the main focus of deformation shifted in a clockwise direction around the arc. Royden [1988] has noted the striking development of Pannonian Basin extension in relation to surrounding orogenic events, and Martin [2007] has correlated the tectonic rotations here to pinning points (collisions) in the outer zone of thrust faulting ( Figure A16).…”

Section: A314 Pannonian Basin Of Eastern Alps and Carpathiansmentioning

confidence: 99%

“…Figure A16. Map of the collision zone between the Pannonian and Eurasian plates modified from Royden [1988] and Mann et al [1995]. Earthquake epicenters of all depths and M > 4.5 are from the ISC catalog (1963 -1992 et al, 2002].…”

Section: A314 Pannonian Basin Of Eastern Alps and Carpathiansmentioning

confidence: 99%

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Collisional model for rapid fore‐arc block rotations, arc curvature, and episodic back‐arc rifting in subduction settings

Wallace

Ellis

Mann

2009

Geochem Geophys Geosyst

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102

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[1] We review geophysical and geological data from 23 active and ancient plate boundaries to document a compelling spatial and temporal relationship between collision, plate boundary curvature, rapid tectonic rotations, and the occurrence of back-arc rifting. Our observations support a conceptual model where the change from subduction to collision causes rapid fore-arc rotation (when viewed in a reference frame relative to the bounding tectonic plates), leading to marked plate boundary curvature. Our global compilation reveals that most active back-arc rifts are associated with rapidly rotating fore arcs and nearby collisions. Thus, we propose that collision and rapid fore-arc rotations play a major role in the evolution and kinematics of back-arc basins. We conduct numerical modeling to better understand the physical processes behind these observed rapid tectonic rotations at convergent margins. Our results suggest that the presence of an indentor or choke point in the subduction system (e.g., collision) can generate rapid rotation of the fore arc about a nearby pole and lead to back-arc rifting. The rate of fore-arc rotation and back-arc rifting depends on the incoming indentor velocity and can be greatly enhanced by slab rollback and the presence of a low-viscosity back arc. Where viscosity of the back arc is low, fore-arc rotation dominates; where back-arc viscosity is high, the formation of strike-slip faults and tectonic escape dominates. Our observational and model-derived results illustrate that shallow crustal forces produced by the entry of buoyant features into subduction zones are a fundamental mechanism for the generation of fore-arc block rotations, plate boundary curvature, back-arc rift evolution, and tectonic escape in subduction systems. Rollback of the subducting slab within the mantle will certainly enhance the processes we describe but it is not the only driving force. Wallace, L. M., S. Ellis, and P. Mann (2009), Collisional model for rapid fore-arc block rotations, arc curvature, and episodic back-arc rifting in subduction settings, Geochem. Geophys. Geosyst., 10, Q05001,

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Section: A314 Pannonian Basin Of Eastern Alps and Carpathiansmentioning

confidence: 99%

Section: A314 Pannonian Basin Of Eastern Alps and Carpathiansmentioning

confidence: 99%

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Collisional model for rapid fore‐arc block rotations, arc curvature, and episodic back‐arc rifting in subduction settings

Wallace

Ellis

Mann

2009

Geochem Geophys Geosyst

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102

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“…La zona de falla Enriquillo es una estructura E-O que atraviesa la parte sur de la isla de La Española (Mann et al, 1995). Esta zona acomoda desplazamientos siniestros paralelos al límite de placas, y presenta un plano de falla subvertical.…”

Section: Fuentes Sismogénicasunclassified

“…Es una de las fallas inversas que yacen bajo las montañas en Haití (Mann et al, 1995). Se incluye en la zona de transición "intraplaca" de la región de la Cordillera donde su geometría no se conoce bien (Maneker et al, 2008).…”

Section: Fuentes Sismogénicasunclassified

Geology applied to the study of seismic microzoning of Santiago de los Caballeros, Dominican Republic

Llorente¹,

Belvaux²,

Bernárdez³

et al. 2017

Bol. geol. min.

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After the Haiti quake of 2010 an initiative started to better understand shaking effects in the Dominican Republic after natural earthquakes, in particular in the city of Santiago de los Caballeros, the second city in the country as far as inhabitants and economic wealth are concerned. Santiago has suffered several devastating earthquakes; in 1562 the city was rebuilt on a new site (the current location) further south from the responsible fault. It is well known that damage caused by an earthquake occurs associated to a number of factors, ground acceleration is one of them and is usually considered as the key to explain most of the damage. Ground acceleration varies from one point to another depending mainly on: distance to the source of the rupture, soil properties and topography. Regarding the distance, the further from the source the less acceleration is expected due to distance attenuation. On the other hand, different soil properties and different topographies will produce different responses to the propagating wave. Within the range of a few kilometres, the effect of distance attenuation might be far less relevant than the effect of the varying properties of soils. This paper gathers together results obtained from the seismic hazard and microzonation studies developed in the city of Santiago: i) quantification of regional seismic hazard dominated by the Septentrional fault, ii) a new geological mapping of superficial formations, and iii) mapping of zones of homogeneous seismic response and liquefaction susceptibility.

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A geodetic plate motion and Global Strain Rate Model

Kreemer

Blewitt

Klein

2014

Geochem. Geophys. Geosyst.

756

785

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We present a new global model of plate motions and strain rates in plate boundary zones constrained by horizontal geodetic velocities. This Global Strain Rate Model (GSRM v.2.1) is a vast improvement over its predecessor both in terms of amount of data input as in an increase in spatial model resolution by factor of $2.5 in areas with dense data coverage. We determined 6739 velocities from time series of (mostly) continuous GPS measurements; i.e., by far the largest global velocity solution to date. We transformed 15,772 velocities from 233 (mostly) published studies onto our core solution to obtain 22,511 velocities in the same reference frame. Care is taken to not use velocities from stations (or time periods) that are affected by transient phenomena; i.e., this data set consists of velocities best representing the interseismic plate velocity. About 14% of the Earth is allowed to deform in 145,086 deforming grid cells (0.25 longitude by 0.2 latitude in dimension). The remainder of the Earth's surface is modeled as rigid spherical caps representing 50 tectonic plates. For 36 plates we present new GPS-derived angular velocities. For all the plates that can be compared with the most recent geologic plate motion model, we find that the difference in angular velocity is significant. The rigid-body rotations are used as boundary conditions in the strain rate calculations. The strain rate field is modeled using the Haines and Holt method, which uses splines to obtain an self-consistent interpolated velocity gradient tensor field, from which strain rates, vorticity rates, and expected velocities are derived. We also present expected faulting orientations in areas with significant vorticity, and update the no-net rotation reference frame associated with our global velocity gradient field.Finally, we present a global map of recurrence times for M w 57.5 characteristic earthquakes.

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Actively evolving microplate formation by oblique collision and sideways motion along strike-slip faults: An example from the northeastern Caribbean plate margin

Cited by 247 publications

References 60 publications

Collisional model for rapid fore‐arc block rotations, arc curvature, and episodic back‐arc rifting in subduction settings

Collisional model for rapid fore‐arc block rotations, arc curvature, and episodic back‐arc rifting in subduction settings

Geology applied to the study of seismic microzoning of Santiago de los Caballeros, Dominican Republic

A geodetic plate motion and Global Strain Rate Model

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