Deep Structure and Past Kinematics of Accreted Terranes by John W. Hillhouse

By John W. Hillhouse

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

The thought of "accreted terranes," that continents develop by means of the addition of displaced fragments of crust, used to be the significant subject of a contemporary multidisciplinary symposium backed via the foreign Union of Geodesy and Geophysics (IUGG). This quantity includes a choice of papers offered in Symposium 12 at XIX normal meeting of the IUGG, held August 15-18, 1987, in Vancouver. Convenors Edward Irving and David Stone centred this system on significant topics. the 1st was once to trace the displacement of terranes utilizing paleomagnetism, geologic mapping, and paleontology. the second one subject matter used to be to discover the deep constitution of accreted terranes utilizing seismological, geochemical, and potential-field tools. Given the scope of these issues, it really is no shock that the contributors represented many specialties in the box of solid-earth geophysics. this system integrated case histories from a suite of fold belts spanning a lot time and lengthy distances, from the Proterozoic sutures of North the USA to the Cenozoic accretionary complexes of the Pacific rim.


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1985]. Alexander has also been arbitrarily moved north somewhat as a result of oblique subduction along the southwest margin of its microplate. , 1984; Pindell, 1985]. The Mayan block has moved away from the North American margin as a result of sea floor spreading, and the Florida Straits block is essentially in place. Southeast Pacific Region Koryak has been moved southward as a passenger on the Pacific Plate, and is now in the southern hemisphere. Two "new" terranes have been added to this region since the Toarcian: the Salinian block (SAL) of Vedder et al.

Evidence of displaced terranes from Permian to Jurassic faunas around the Pacific margins, J. geol. Soc. London, 143, 209-216, - 1986. M. L. LaBrecque, W. T. J. Snelling, pp. 118-140, Geol. Soc. London Mem. 10, 1985. , Mesozoic California and the underflow of Pacific mantle, Geol. Soc. Amer. , 80, 2409-2430, 1969. Geophysical Monograph Series Deep Structure and Past Kinematics of Accreted Terranes Vol. S. Prof. Paper 1078, 1-345, 1979. B. S. G. Howell, pp. -Pac. Council Energy Min. , Houston, 1985.

Soc. London, 258A, 41-51, 1965. , Tectonic evolution of the Caribbean, Ann. Rev. Earth & Planet. , 16, 1988 in press. , C. F. Dewey, P. L. Pindell, Caribbean tectonics and relative plate motions, Geol. Soc. Amer. , 162, 31-63, 1984. , Evolution of a Middle Jurassic back-arc basin, Cedros Island, Baja California: evidence from a marine volcaniclastic apron, Geol. Soc. Amer. , 100, 218-233, 1988. F. J. Coney, Tectono-stratigraphic terranes and mineral resource distributions in Mexico, Can. J. , 20, 1040-1051, 1983.

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