The Analysis Of Diffuse Triple Junction Zones In Plate Tectonics And The Pirate Model Of Western Caribbean Tectonics

Author : D. Fraser Keppie
Publisher : Springer Science & Business Media
ISBN 13 : 1461496160
Total Pages : 83 pages
Book Rating : 4.68/5 ( download)

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Download or read book The Analysis of Diffuse Triple Junction Zones in Plate Tectonics and the Pirate Model of Western Caribbean Tectonics written by D. Fraser Keppie and published by Springer Science & Business Media. This book was released on 2014-02-17 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern researchers in plate tectonics may be concerned with the analysis of distributed deformation across diffuse plate boundaries and triple junction zones. This book extends classic methods of kinematic analysis first developed in the 1960s to the more general scenarios of diffuse deformation zones between plates. The analytic methods presented specifically target the non-rigid deformation implied by unstable triple junction configurations. These methods are then applied to the tectonic evolution of western Caribbean region which provides new ways to test and challenge the established Pacific model of Caribbean tectonics. Possible advantages of the new Pirate model of Caribbean tectonics are discussed in terms of paleo-geography and paleo-ocean connections, as well as mineral and hydrocarbon potential and seismic risks across the region.

Author : Duncan Keppie
Publisher : Springer
ISBN 13 : 9781461496175
Total Pages : 75 pages
Book Rating : 4.79/5 ( download)

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Download or read book The Analysis of Diffuse Triple Junction Zones in Plate Tectonics and the Pirate Model of Western Caribbean Tectonics written by Duncan Keppie and published by Springer. This book was released on 2014-02-18 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern researchers in plate tectonics may be concerned with the analysis of distributed deformation across diffuse plate boundaries and triple junction zones. This book extends classic methods of kinematic analysis first developed in the 1960s to the more general scenarios of diffuse deformation zones between plates. The analytic methods presented specifically target the non-rigid deformation implied by unstable triple junction configurations. These methods are then applied to the tectonic evolution of western Caribbean region which provides new ways to test and challenge the established Pacific model of Caribbean tectonics. Possible advantages of the new Pirate model of Caribbean tectonics are discussed in terms of paleo-geography and paleo-ocean connections, as well as mineral and hydrocarbon potential and seismic risks across the region.

Author : Larry J. Ruff
Publisher : Birkhäuser
ISBN 13 : 3034891407
Total Pages : 280 pages
Book Rating : 4.00/5 ( download)

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Download or read book Subduction Zones Part II written by Larry J. Ruff and published by Birkhäuser. This book was released on 2012-12-06 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Subduction zones consume oceanic lithosphere and are an indispensible part of plate tectonics. Unlike the oceanic lithosphere production system which can be linked as a nearly continuous, albeit sinuous, strand around the earth, subduction zones are a rather dissociated group and are found in several isolated corners of the world. While plate tectonics can predict that subduction zones are required along certain plate boundaries, it does not stipulate how subduction zones initiate and develop. The preservation of newly created oceanic lithosphere and the propensity for spreading centers to fragment continents leaves a wealth of geological informa tion on the initiation and evolution of spreading. On the other hand, the subject of subduction initiation has little observational basis. To find such observations, we need to look at some muddled tectonic regimes. The Macquarie Ridge complex presents a natural laboratory for studies of subduction initiation. 2. Tectonics of the Macquarie Ridge Complex The Macquarie Ridge complex is a complicated physiographic feature that trends approximately north-south between South Island, New Zealand and the Pacific-Antarctica spreading center. This feature consists of a sequence of troughs and ridges, with Macquarie Island as the only exposed expression. The seismically active Macquarie Ridge complex (hereafter: MRC) is crudely continuous with the Tonga-Kermadec-New Zealand seismic activity. The basic physiographic features and seismicity of the MRC are shown in Figure I. The earthquake epicenters generally cluster about the bathymetric expression of the MRC.

Author : Tina Kasbeer
Publisher : Geological Society of America
ISBN 13 : 0813721644
Total Pages : 159 pages
Book Rating : 4.44/5 ( download)

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Download or read book Bibliography of Continental Drift and Plate Tectonics written by Tina Kasbeer and published by Geological Society of America. This book was released on 1973 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : James F. Dolan
Publisher : Geological Society of America
ISBN 13 : 9780813723266
Total Pages : 196 pages
Book Rating : 4.64/5 ( download)

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Download or read book Active Strike-slip and Collisional Tectonics of the Northern Caribbean Plate Boundary Zone written by James F. Dolan and published by Geological Society of America. This book was released on 1998-01-01 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : William Emory Bonini
Publisher : Geological Society of America
ISBN 13 : 0813711622
Total Pages : 438 pages
Book Rating : 4.21/5 ( download)

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Download or read book The Caribbean-South American Plate Boundary and Regional Tectonics written by William Emory Bonini and published by Geological Society of America. This book was released on 1984 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Paul Mann
Publisher : Geological Society of America
ISBN 13 : 0813722950
Total Pages : 391 pages
Book Rating : 4.55/5 ( download)

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Download or read book Geologic and Tectonic Development of the Caribbean Plate Boundary in Southern Central America written by Paul Mann and published by Geological Society of America. This book was released on 1995 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains 17 contributed chapters on the geology and tectonics of Panama, Costa Rica, and offshore areas. Five chapters describe onshore geology, three describe a combination of onshore geology and offshore marine geophysical data and attempt land-sea correlations, six describe marine geophysical dat

Author : Larry J. Ruff
Publisher :
ISBN 13 :
Total Pages : 294 pages
Book Rating : 4.18/5 ( download)

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Download or read book Subduction Zones written by Larry J. Ruff and published by . This book was released on 1989 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Paul Kibler Sime
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.23/5 ( download)

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Download or read book Great Lakes Tectonic Zone--revisited written by Paul Kibler Sime and published by . This book was released on 1993 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Great Lakes tectonic zone (GLTZ) is a Late Archean crustal boundary (paleosuture) at least 1,200 kilometers long that juxtaposes a Late Archean greenstone-granite terrane (Wawa subprovince of Superior province) on the north and an Early to Late Archean gneiss terrane (Minnesota River Valley subprovince) on the south. Recent mapping of an exposed seg- ment in the Marquette, Michigan, area provides new data on the vergence of the structure. These data necessitate reexami- nation of the COCORP seismic-reflection profiling in central Minnesota, which has been the principal basis for past views on the vergence of the GLTZ. In the Marquette area, the GLTZ is a northwest-striking mylonite zone about 2.3 kilometers wide that is superposed on previously deformed rocks of both Archean terranes. Shear zone walls strike N. 55°-60° W., and foliation in mylonite within the GLTZ strikes (average) N. 70° W. and dips 75° SW. A stretching lineation plunges 42° in a S. 43° E. direction. Hinges of tight to open (sheath?) folds of both Z- and S-symmetries plunge parallel to the lineation. The attitude of the lineation (line of tectonic transport and X finite strain axis), together with asymmetric kinematic indicators, indicates that collision at this locality was oblique; the collision resulted in dextral- thrust shear along the boundary, northwestward vergence, and overriding of the greenstone-granite terrane by the gneiss terrane. In contrast, the seismic-reflection profiling in central Minnesota has been interpreted by several investigators to indicate that the GLTZ is a shallowly north dipping (=30°) structure, which implies southward vergence on a north-dipping subduction zone. We suggest, alternatively, that the shallow- dipping reflectors in the seismic profiles indicate lithologic contacts related to recumbent and gently inclined folds (D1), perhaps enhanced by ductile deformation zones, and that the Morris fault is indeed the GLTZ. The Morris fault strikes about N. 70° E., dips steeply southeastward, is transparent in seismic profiles, appears to be narrow, and coincides with the inferred position of the GLTZ as shown on earlier maps. The oblique collision along northwest-trending segments of the GLTZ would be expected to produce dextral transpression across a large region north of the GLTZ, and may have produced an early nappe-forming event (D1) as well as younger upright folds (D2), and as a later, more brittle event, the numerous dextral faults and conjugate sinistral faults that are widespread in the Wawa and adjacent subprovinces.

Author : Robert Bruce Miller
Publisher : Geological Society of America
ISBN 13 : 0813724562
Total Pages : 324 pages
Book Rating : 4.60/5 ( download)

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Download or read book Crustal Cross Sections from the Western North American Cordillera and Elsewhere written by Robert Bruce Miller and published by Geological Society of America. This book was released on 2009 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Exposed crustal cross sections provide a unique direct view of continental crust, and are a major source of insights into variations in lithologic and geochemical composition, structural style, metamorphism, plutonism, and rheology with progressive depth through the crust. This volume provides a synthesis of crustal cross sections with a special emphasis on Phanerozoic sections from the western North American Cordillera, supplemented by articles on lower- and mid-crustal sections through Proterozoic crust in North America and Australia, and the classic crustal section of Fiordland, New Zealand. Many of the papers describe multidisciplinary research on crustal sections and include data from various combinations of structural analysis, geochemistry, geothermobarometry, geochronology, geophysics, and other disciplines. The volume also discusses common problems for the interpretation of crustal cross sections, including how sections that expose deep-crustal rocks are eventually exhumed, and leading to the conclusion that there is no simple 'standard model' for continental crust. This volume will be useful to those interested in structural geology, tectonics, geodynamics, regional geology, petrology, geochemistry/isotope geology, and geophysics."--Pub. desc.