Forearc basins: Types, geometries, and relationships to subduction zone dynamics

Noda, Atsushi

doi:10.1130/b31345.1

Cited by 130 publications

(156 citation statements)

References 92 publications

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“…Subduction‐related fore‐arc and collision‐related syncollisional basins located on the continental margin preserve significant information regarding the erosional and magmatic records of continental margins and the pre/syn/postcollision history between continents and therefore form important archives of continental dynamics [ DeCelles et al , ; Noda , ]. Along the southern margin of the Asian plate, the Xigaze basin includes a fore‐arc basin that transitioned into a syncollisional basin following collision [e.g., DeCelles et al ., ].…”

Section: Introductionmentioning

confidence: 99%

India‐Asia convergence: Insights from burial and exhumation of the Xigaze fore‐arc basin, south Tibet

Kohn

Sandiford

et al. 2017

JGR Solid Earth

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The composite fore‐arc/syncollisional Xigaze basin in south Tibet preserves a key record of India‐Asia collision. New apatite fission track and zircon (U‐Th)/He data from an N‐S transect across the preserved fore‐arc basin sequence near Xigaze show a consistent northward Late Cretaceous to middle Miocene younging trend, while coexisting apatite (U‐Th‐Sm)/He ages are all Miocene. Corresponding detrital zircon U‐Pb data are also reported for constraining the Cretaceous depositional ages of the Xigaze basin sequence in the region. Thermal history modeling indicates that the basin experienced northward propagating episodic exhumation, along with a northward migration of the depocenter and a pre‐existing Cenozoic syncollisional basin sequence which had been removed. In the southern part, fore‐arc exhumation commenced in the Late Cretaceous (~89 ± 2 Ma). Following transition to a syncollisional basin in the Paleocene, sedimentation in the central and northern Xigaze basin continued until the latest Eocene (~34 ± 4 Ma). Ongoing folding and thrusting (e.g., Great Counter Thrusts) caused by progressive plate convergence during late Oligocene‐early Miocene time resulted in regional uplift and considerable basin denudation, which fed two fluvial basins along its northern and southern flanks and exposed the basement ophiolite. Subsequent incision of the Yarlung River resulted in Miocene cooling in the region. Different episodes in the exhumation history of the Xigaze basin, caused by thrusting of an accretionary wedge and ophiolitic basement, can be linked to changes in India‐Asia convergence rates and the changing subduction pattern of the Indian and Neo‐Tethyan slabs.

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Section: Introductionmentioning

confidence: 99%

India‐Asia convergence: Insights from burial and exhumation of the Xigaze fore‐arc basin, south Tibet

Kohn

Sandiford

et al. 2017

JGR Solid Earth

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“…Figure b includes a compilation of the backstop locations (limit of the overriding crystalline crust) in the NLA, inferred by Laigle, Becel, et al () and Evain et al (), plotted on top of the VGG residuals. The importance of characterizing the backstop position in subduction systems lies on the fact that they are a widely used proxy for the up‐dip limit of the seismogenic zone (i.e., Laigle, Becel, et al, ), and because they could play an important role in the stress field between the overriding and down‐going plates, affecting the structure of the respective forearc basins (Noda, ). The backstop locations identified in the Lesser Antilles partially overlap with a region of transition from negative to positive residuals (transition from overriding to down‐going plates, respectively), especially in front of Guadeloupe and Dominica Islands, where the outer forearc acts as backstop (Evain et al, ).…”

Section: Discussionmentioning

confidence: 99%

3‐D Modeling of Vertical Gravity Gradients and the Delimitation of Tectonic Boundaries: The Caribbean Oceanic Domain as a Case Study

Gómez-García

Meeßen

Scheck‐Wenderoth

et al. 2019

Geochem Geophys Geosyst

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Geophysical data acquisition in oceanic domains is challenging, implying measurements with low and/or nonhomogeneous spatial resolution. The evolution of satellite gravimetry and altimetry techniques allows testing 3‐D density models of the lithosphere, taking advantage of the high spatial resolution and homogeneous coverage of satellites. However, it is not trivial to discretise the source of the gravity field at different depths. Here, we propose a new method for inferring tectonic boundaries at the crustal level. As a novelty, instead of modeling the gravity anomalies and assuming a flat Earth approximation, we model the vertical gravity gradients (VGG) in spherical coordinates, which are especially sensitive to density contrasts in the upper layers of the Earth. To validate the methodology, the complex oceanic domain of the Caribbean region is studied, which includes different crustal domains with a tectonic history since Late Jurassic time. After defining a lithospheric starting model constrained by up‐to‐date geophysical data sets, we tested several a‐priory density distributions and selected the model with the minimum misfits with respect to the VGG calculated from the EIGEN‐6C4 data set. Additionally, the density of the crystalline crust was inferred by inverting the VGG field. Our methodology enabled us not only to refine, confirm, and/or propose tectonic boundaries in the study area but also to identify a new anomalous buoyant body, located in the South Lesser Antilles subduction zone, and high‐density bodies along the Greater, Lesser, and Leeward Antilles forearcs.

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“…Key controlling factor for the type of forearc basin is the sediment flux at the subduction zone. Noda () concluded that the Sandino forearc basin changed from compressional accretionary to non‐accretionary during the middle Eocene to late Oligocene and identified extended subsidence that is attributed to trench retreat due to slab roll back or subduction erosion. This is consistent with the onset of increased subsidence during the Oligocene (Struss et al, ) and the persisting deposition of thick deep‐water successions (Lang et al, ; Struss, Brandes, Blisniuk et al, ; Struss et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

From incipient island arc to doubly‐vergent orogen: A review of geodynamic models and sedimentary basin‐fills of southern Central America

Brandes

Winsemann

2018

Island Arc

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Southern Central America is a Late Mesozoic/Cenozoic island arc that evolved in response to the subduction of the Farallón Plate beneath the Caribbean Plate in the Late Cretaceous and, from the Oligocene, the Cocos and Nazca Plates. Southern Central America is one of the best studied convergent margins in the world. The aim of this paper is to review the sedimentary and structural evolution of arc‐related sedimentary basins in southern Central America, and to show how the arc developed from a pre‐extensional intra‐oceanic island arc into a doubly‐vergent, subduction orogen. The Cenozoic sedimentary history of southern Central America is placed into the plate tectonic context of existing Caribbean Plate models. From regional basin analysis, the evolution of the southern Central American island arc is subdivided into three phases: (i) non‐extensional stage during the Campanian; (ii) extensional phase during the Maastrichtian‐Oligocene with rapid basin subsidence and deposition of arc‐related, clastic sediments; and (iii) doubly‐vergent, compressional arc phase along the 280 km long southern Costa Rican arc segment related to either oblique subduction of the Nazca plate, west‐to‐east passage of the Nazca–Cocos–Caribbean triple junction, or the subduction of rough oceanic crust of the Cocos Plate. The Pleistocene subduction of the Cocos Ridge contributed to the contraction but was not the primary driver. The architecture of the arc‐related sedimentary basin‐fills has been controlled by four factors: (i) subsidence caused by tectonic mechanisms, linked to the angle and morphology of the incoming plate, as shown by the fact that subduction of aseismic ridges and slab segments with rough crust were important drivers for subduction erosion, controlling the shape of forearc and trench‐slope basins, the lifespan of sedimentary basins, and the subsidence and uplift patterns; (ii) subsidence caused by slab rollback and resulting trench retreat; (iii) eustatic sea‐level changes; and (iv) sediment dispersal systems.

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Forearc basins: Types, geometries, and relationships to subduction zone dynamics

Cited by 130 publications

References 92 publications

India‐Asia convergence: Insights from burial and exhumation of the Xigaze fore‐arc basin, south Tibet

India‐Asia convergence: Insights from burial and exhumation of the Xigaze fore‐arc basin, south Tibet

3‐D Modeling of Vertical Gravity Gradients and the Delimitation of Tectonic Boundaries: The Caribbean Oceanic Domain as a Case Study

From incipient island arc to doubly‐vergent orogen: A review of geodynamic models and sedimentary basin‐fills of southern Central America

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