Results 171 to 180 of about 7,754 (208)

Tectonic wedging in the forearc basin: Accretionary prism transition, Lesser Antilles forearc

Journal of Geophysical Research: Solid Earth, 1989
The southern Lesser Antilles forearc contains an extensive 50‐ to 70‐km‐wide belt of active deformation at an arcward (inner) locus, between the structural high of the Barbados accretionary prism and undeformed forearc basin (FAB) of the Tobago Trough.
Rudolph Torrini, Robert C. Speed
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Contribution of background seismicity to forearc uplift

Nature Geoscience, 2021
Rock exhumation and surface uplift over subduction zones require part of the stresses to cause crustal thickening within the wedge and/or through basal accretion. Although accumulated elastic strain around subduction zones is released through megathrust earthquakes and related aftershocks, these large events often result in no permanent forearc surface
Andrea Madella, Todd A. Ehlers
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Structure and Stratigraphy of Forearc Regions

AAPG Bulletin, 1977
Abstract Active continental margins and the active flanks of island arcs lie in the forearc regions of arc-trench systems generated by plate consumption. Arc-trench systems are initiated by contractional activation of previously rifted continental margins, by reversal of subduction polarity following arc collisions, and as island arcs
W. R. Dickinson, D. R. Seely
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From accretion to forearc basin initiation: The case of SW Ecuador, Northern Andes

Sedimentary Geology, 2019
International audienceThe SW of Ecuador offers a great opportunity to study the long-term behavior of an almost entire forearc system, from the external accretionary prism to the landward limit of the forearc basin.
Witt, Cesar, Reynaud, J.Y., Barba, D., Aizprua, C., Rivadeneira, M., Poujol, Marc, Amberg, C.   +6 more
exaly   +2 more sources

Forearc diamond from Japan

Geology, 2008
Convergent margins are not generally considered to be suitable places for the formation of diamond and its transport to Earth’s surface. Microdiamonds found in xenoliths within a lamprophyre dike in southwest Japan show that this assumption is incorrect and, furthermore, that diamond occurs in a wider range of geological settings than previously ...
T. Mizukami, S. Wallis, M. Enami, H. Kagi   +3 more
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Origin of the Sumba forearc basement

Marine and Petroleum Geology, 1994
Abstract An interpretation of acoustic basement structures in the eastern Sunda/western Banda forearc region suggests structural continuity between Sumba and Northern Timor. The area between Sumba and Timor is delineated as a zone of continuous structures, without major strike-slip offsets.
Wytze van der Werff, Dida Kusnida, Hardi Prasetyo, Tjeerd C.E. van Weering   +3 more
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Structure of the Lesser Antilles subduction forearc and backstop from 3D seismic refraction tomography [PDF]

Tectonophysics, 2013
In 2007 the Sismantilles II experiment was conducted to constrain structure and seismicity in the central Lesser Antilles subduction zone. The seismic refraction data recorded by a network of 27 OBSs over an area of 65 km×95 km provide new insights on ...
Anne Bécel, Mireille Laigle, Mikael Evain   +2 more
exaly   +2 more sources

An inverted continental Moho and serpentinization of the forearc mantle

Nature, 2002
Volatiles that are transported by subducting lithospheric plates to depths greater than 100 km are thought to induce partial melting in the overlying mantle wedge, resulting in arc magmatism and the addition of significant quantities of material to the overlying lithosphere.
M G, Bostock, R D, Hyndman, S, Rondenay, S M, Peacock   +3 more
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Sedimentation in the Sunda Trench and forearc region

Geological Society, London, Special Publications, 1982
SummarySedimentation in the Sunda Trench and forearc region is dominated by the transport of terrigenous detritus from orogenic and volcanic terranes around the margins of the north-eastern Indian Ocean. Quartzose Himalayan detritus is transported into the Bay of Bengal and down the trench axis as far south as the Sunda Strait.
Gregory F. Moore, Joseph R. Curray, Frans J. Emmel   +2 more
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Paleoseismology of an active reverse fault in a forearc setting: The Poukawa fault zone, Hikurangi forearc, New Zealand

Geological Society of America Bulletin, 1998
The Poukawa fault zone, on the North Island of New Zealand within the forearc of the Hikurangi subduction zone, consists of a series of en echelon reverse faults and companion hanging-wall anticlines. The geomorphically expressed length of the fault zone is 34 km.
Harvey M. Kelsey, Alan G. Hull, Susan M. Cashman, Kelvin R. Berryman, Patricia H. Cashman, James H. Trexler, John G. Begg   +6 more
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