Description
Middle American Terranes, Potential Correlatives, and Orogenic Processes
Coordinators: Keppie J. Duncan, Murphy J. Brendan, Ortega-Gutierrez F., Ernst W. G.
Language: EnglishSubject for Middle American Terranes, Potential Correlatives, and...:
Keywords
Flat Slab Sub-duction; Oaxacan Complex; flat-slab subduction; Rheic Ocean; Middle American terranes; Oceanic Lithosphere; Acadian orogeny; Dm Model Age; High Grade Metamorphic Event; Early Middle Permian; Tectonothermal Events; Iapetus Ocean; Detrital Zircon; North American Craton; Laramide Orogeny; FeO Tot; Eastern Laurentia; Zircon Morphologies; Chortis Block; Trans-Mexican Volcanic Belt; Subduction Erosion; Depleted Mantle Model Ages; Clastic Wedge; Supercontinent Breakup; Subduction Initiation; Detrital Zircon Data; Lower Intercept Age
Publication date: 04-2008
· 17.8x25.4 cm · Hardback
Publication date: 12-2019
· 17.8x25.4 cm · Paperback
Description
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Consisting of papers that have appeared recently in International Geology Review, Middle American Terranes, Potential Correlatives, and Orogenic Processes focuses on Middle American terranes in which tectonic processes, including flat-slab subduction, for orogenic development are examined at various times since the late Mesoproterozoic: at 1 Ga, through the Paleozoic, and into the Cenozoic. Many papers relate the evolution of the Middle American terranes over the past billion years to global scale events, and a second theme running through the book relates to the supercontinents, Rodinia and Pangea, the geometry of their amalgamation and breakup, and the processes responsible.
Highlights include:
· An update on the geographic record, tectonic setting, and provenance of these terranes
· Documentation of allocthonous nature and position peripheral to Amazonia of the ~1 Ga basement of southern Mexico
· Data demonstrating that the basement rocks were involved in several Phanerozoic tectonic events
· An examination of new evidence of a Late Paleozoic event associated with the amalgamation of Pangea overprinting the ~1 Ga basement and the Paleozoic units lying chiefly to the west and south of it
· An exploration of the following potential correlatives: (1) events in Europe on the northern margin of Gondwana; (2) the Late Silurian-Devonian Acadian orogeny in the Appalachian, which is inferred to have resulted from flat-slab subduction related to overriding a plume; and (3) Mesozoic-Cenozoic events along the western margin of Laurentia
· A discussion of possible mechanisms for the initiation of orogeny, flat-slab subduction in the Laramide orogeny, and hypotheses relating to the amalgamation and breakup of supercontine