Download Back-Arc Spreading Systems: Geological, Biological, by David M. Christie, Charles R. Fisher, Sang-Mook Lee, Sharon PDF

By David M. Christie, Charles R. Fisher, Sang-Mook Lee, Sharon Givens

Published via the yankee Geophysical Union as a part of the Geophysical Monograph Series.

New ocean crust is regularly created the place tectonic plates diverge. a particular form of oceanic crust is shaped via back-arc spreading platforms that parallel oceanic island arcs at the aspect clear of the subducting plate. Volatile-rich and spatially variable, back-arc spreading platforms are a ordinary laboratory for multi-disciplinary stories of seafloor production, the circulate of magma from the deep earth, and the hydrothermal ecosystems that this movement sustains.

Derived from the distinguished Ridge 2000 InterRidge Theoretical Institute held in 2004, Back-Arc Spreading structures: Geological, organic, Chemical, and actual Interactions studies the nation of the technology, with decide on case studies.

Experienced researchers in, and scholars of, marine geology, organic oceanography, marine geochemistry, volcanology, petrology, and geo- and paleomagnetism will locate this quantity an important source now and for the close to future.

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Sambridge (1998), A regionalized upper mantle (RUM) seismic model, J. Geophys. Res, 103, 7121–7136. Harding, A. , G. M. Kent, and J. A. Collins (2000), Initial results from a multichannel seismic survey of the Lau back-arc basin, Eos, Trans. AGU, 81, abstract T61C-16. , and J. Nakajima (2004), Geophysical constraints on slab subduction and arc magmatism, in The State of the Planet: Frontiers and Challenges in Geophysics, Geophys. Monogr. , edited by R. S. J. Sparks and C. J. Hawkesworth, pp. pp.

5–16, Ocean Research Institute, Tokyo. Kusznir, N. , and R. G. Park (1987), The extensional strength of the continental lithosphere: its dependence on geothermal gradient, and crustal composition and thickness, in Continental Extensional Tectonics, edited by M. P. , pp. 35–52, Geological Society of America. , J. Goslin, H. -L. -M. Auzende (1997), Multiple active spreading centres in the hot North Fiji Basin (Southwest Pacific): a possible model for Archaean seafloor dynamics? Earth Planet. Sci.

Examples in the previous sections show interesting differences among their modes of backarc opening. The Tonga arc shows linear spreading with little internal deformation. The Mariana arc shows uniform lateral expansion that makes a convex island-arc. The Okinawa arc is fragmented into three small, rigid blocks. The Hellenic arc is much influenced by the westward motion of the Anatolian block. In the Mariana, Ryukyu, and Hellenic arcs, extensional deformation/stress along the arc–forearc areas is clearly different from that within the backarcs.

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