The palaeogene forearc basin of the eastern alps and. The kumano forearc basin has been cited to have formed due to wedge stabilization caused by rapid hinterland sedimentation simpson, 2010. Clay mineralogy is an important characteristic of mud volcano sediments. Forearc basin evolution along accretionary convergent. Condie, in earth as an evolving planetary system third edition, 2016. Consequences of continental subduction on forearc basin.
Pdf controls on forearc basin formation and evolution. Pdf recent observations of an association between forearc basins and slip during subduction thrust earthquakes suggest a link between processes. Forearc basin evolution along accretionary convergent margins, wrangell mountains, alaska. Sediment flow routing during formation of forearc basins. Seabeam data reveal two deep subcircular reentrants in the lower arc slope of the new hebrides island arc that may illustrate two stages in the development of a novel type of forearc basin. Pdf the stratigraphic succession of a forearc basin provides crucial information on the history of a convergent plate margin. Frontiers partitioning pervasive detrital geochronologic. Though the magnetic anomalies are more complex to decipher the rocks sampled from backarc basin spreading centers do not differ very much from those.
Forearc peridotites from tonga record heterogeneous. In continental margin arcs, such as the sunda arc in indonesia, forearc basins range up to 700 km in strike length. Pdf the birth of the xigaze forearc basin in southern tibet. A foreland basin is a structural basin that develops adjacent and parallel to a mountain belt. Insights from analogue modeling jacques malavieille. Pdf formation of forearc basins and their influence on subduction. Recent advances focuses on key topics or areas where the greatest strides forward have been made, while also providing online access to the. Multiple orientations and generations of faults from 3d coherency mapping g. Formation of forearc basins by collision between seamounts. In particular, it helps to establish the origin of the underlying ophiolites and to. Deposition and deformation of modern accretionarytype forearc. Types, geometries, and relationships to subduction zone dynamics article pdf available in geological society of america bulletin 12856. Preservation of forearc basins during island arccontinent.
Forearc basin strata were subdivided into individual or groups of formations that represent seven different time intervals. Chief editor inside this issue cenozoic stratigraphy of the east java forearc a. Forearc basin stratigraphy and interactions with accretionary. Insights from oligoceneto recent tectonostratigraphy of the lower magdalena valley basin ofnorthwest colombia. The xigaze forearc basin in southern tibet is one of the best. The birth of the xigaze forearc basin in southern tibet. If a 10% lherzolite component containing 10% spinel is assumed, the maximum depth in this model would increase by 30 m on the southern side of the forearc basin. Forearc basins are important constituents of sediment traps along subduction zones. As megasplay formation may also b e related to strength contrasts within the accretionary. Many of the worlds leading researchers in this field have been brought together in this. A forearc is the region between an oceanic trench and the associated volcanic arc. The kumano basin, located along the nankai margin, southwest japan fig. The underexplored sandino basin nicaragua basin trough is located within the forearc area of western nicaragua and nw costa rica.
We present stratigraphic, sandstone petrographic, and upb detrital data from upper cretaceous. Mantlederived fluids in the nankai trough kumano forearc. The formation of the lower magdalena amagmatic, forearc basin occurred in a stable setting from the. The wrangell mountains basin is a mesozoic forearc basin that developed during a period of accretionary. Structuralmorphological and sedimentary features of. Abstract deep natural gas accumulations 15,000 ft, 4,572 m are associated with two. Resolving the architecture and early evolution of a. Forearc basin is a sedimentary basin formed in the arctrench gap between a volcanic arc and plate subduction zone figure 1 1. Variation in forearc basin configuration and basinfilling. Formation of forearc basins and their influence on subduction zone. Structural settings of deep natural gas accumulations in. Late cenozoic seismic stratigraphy of the andaman forearc. The highquality multichannel seismic data from the.
Thermal fluid migration in the kumano forearc basin. Petroleum system of early cretaceous forearc basin. To understand subduction initiation, study forearc crust. Microbial communities from methane hydratebearing deep. Analysis of normal fault populations in the kumano forearc basin, nankai trough, japan. Analysis of normal fault populations in the kumano forearc.
Foreland basins form because the immense mass created by crustal thickening associated with the evolution of. The destructive nature of subduction erosion poses challenges to fully understanding the evolution of erosive convergent margins that are critical to understanding crustal recycling and. This cited by count includes citations to the following articles in scholar. The forearc basin in myanmar is significant in understanding the development of continental forearc basins. The stratigraphic succession of a forearc basin provides crucial information on the history of a convergent plate margin. This is indeed an excellent example of a sedimentrich convergent margin, but emphasis on california. Resolving the architecture and early evolution of a forearc basin georgia basin, canada using detrital zircon skip to main content thank you for visiting. Microbial communities in cores obtained from methane hydratebearing deep marine sediments down to more than 300 m below the seafloor in the forearc basin of the nankai trough. The eel river forearc basin at the southern end of the cascadia subduction zone gulick et al. Structural settings of deep natural gas accumulations in the conterminous united states by william j. Initiation and evolution of forearc basins in the central.
This study examined the thermal history of the kumano forearc basin, as well as slope basin sediments and the accretionary prism, in the nankai trough, offshore japan, using vitrinite. Forearc basins are marine depositional basins on the trench side of arcs figure 3. Investigating the complex interplay between tectonics and sedimentation is a key endeavor in modern earth science. In this study, we investigate the chemical signatures and oxygen fugacity recorded by forearc peridotites from the tonga trench to assess the role of subductionzone melts and fluids in. Multibeam mb and subbottom profile sbp data along the forearc slope off miyagi, japan, are combined to investigate structuralmorphological and sedimentary structures along the. Exploration activity since 2004 has focussed on the onshore sector of the basin, and has included the first drilling campaign for over 30 years. Forearc regions are found at convergent margins, and include any accretionary wedge and forearc basin that may be present. Tectonics of sedimentary basins wiley online books. Basins associated with subduction processes prepared by dr. Pdf forearc basins are one of the fundamental sedimentary basins, and they preserve various geological phenomena arising from dynamic interactions. The forearc is the region between the subduction zone and the volcanic chain volcanic arc. Processes and sedimentary features that characterize modified forearc basins include the following. Carolyn lampe rocky mountain and pacific section aapg. This study determined the clay mineral compositions of sediment from two submarine mud volcanoes in the kumano forearc basin.