Like a factory, raw material from the Earth's exterior is fed into the subduction zone and transformed in a series of chemical reactions driven by increasing pressure (P) and temperature (T) in the sinking plate. Some of the products are buoyant and so rise, drive melting in the mantle,...
Geochemistry of continental subduction-zone fluids The composition of continental subduction-zone fluids varies dramatically from dilute aqueous solutions at subsolidus conditions to hydrous silicate melts ... YF Zheng,J Hermann - 《Earth Planets & Space》 被引量: 160发表: 2014年 Modification of subco...
geochemistrysubduction zonePlagioclase-bearing mantle peridotites were dredged from two sites along the scarp of a fault (144掳E) on the inner wall of the southern Mariana Trench, during cruise KH-98-1 of the R/V Hakuho-maru. The peridotites are weakly to moderately serpentinized, with most ...
Slab Temperature Evolution Over the Lifetime of a Subduction Zone The thermal evolution of subducting slabs controls a range of subduction processes, yet we lack a robust understanding of how thermal structure develops ov... AF Holt,CB Condit - 《Geochemistry Geophysics Geosystems G3》 被引量: ...
Sediments play a key role in subduction. They help control the chemistry of arc volcanoes and the location of seismic hazards. Here, we present a new model describing the fate of subducted sediments that explains magnetotelluric models of subduction zone
For some volcanic arcs, the geochemistry of volcanic rocks erupting above subducted oceanic fracture zones is consistent with higher than normal fluid inputs to arc magma sources. Here we use enrichment of boron (B/Zr) in volcanic arc lavas as a proxy to
Subduction zone magmatism is an important and extensively studied topic in igneous geochemistry. Recent studies focus on from where arc magmas are generated, how subduction components (fluids or melts) are fluxed into the source of the magmas, and whether or how the subduction components affect part...
Geochemistry and tectonomagmatic affinity of the Yungbwa ophiolite, SW Tibet The Yungbwa ophiolite is a thrust sheet of about 800 km 2 tectonically overlying an Upper Cretaceous melange south of the Indus–Tsangpo Suture Zone in SW ... C Miller,R Schuster,Martin Thni,... - 《Lithos》 被引...
Interestingly, in the case of the South Sandwich subduction zone, which now forms an isolated trench in the South Atlantic Ocean, it is difficult to assess which of these mechanisms played a role. The overriding plate, to the west of the South Sandwich subduction zone, contains continental ...
in the subduction zone is poorly understood.In this study,we describe novel textures related to orthopyroxene(Opx)pseudomorphs and antigorite veins in the ... O Dandar,A Okamoto,M Uno - 《Lithos An International Journal of Mineralogy Petrology & Geochemistry》 被引量: 0发表: 2023年 加载更多...