Download or read book The Volcanic Geology of the Mid Arc Island of Dominica Lesser Antilles written by Alan L. Smith and published by . This book was released on 2018 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Volcanic Geology of the Mid Arc Island of Dominica written by A.L. Smith and published by Geological Society of America. This book was released on 2013-11-07 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Using results from geological mapping, detailed stratigraphy, mineral chemistry, and geochemistry, the authors have developed a model to explain characteristics of Dominica not seen on many island arcs worldwide. The model suggests that during the Pleistocene partial melting of the island-arc crust generated a single magma body of batholithic proportions beneath the island"--Provided by publisher.
Download or read book PROVIDENCIA ISLAND written by Alan L. Smith and published by Geological Society of America. This book was released on 2021-09-22 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "This volume presents new and previously published results for the geology, geochemistry, petrology and isotopic ages from the Providencia island group to unravel its complex history and evolution"--
Download or read book Road from Geochemistry to Geochemometrics written by Surendra P. Verma and published by Springer. This book was released on 2019-08-16 with total page 669 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights major problems in the statistical analysis of compositions that have been known for over a century, as well as the corresponding solutions that have been put forward by specialists over the past 30 years. The basic assumptions of normality or multi-normality are pointed out and methods to test and achieve them are also covered. The conventional major and trace element geochemistry and modeling equations are discussed, and are followed by a more sophisticated multidimensional approach to data handling. The book’s main focus is on the use of statistical techniques to facilitate data interpretation. It also highlights the classification (or nomenclature) and tectonic discrimination aspects for both igneous and sedimentary rocks. The book concludes by discussing computer programs that are helping pave the way from geochemistry to geochemometrics. Written by a leading expert in the area of geochemistry, it offers a valuable guide for students and professionals in the area.
Download or read book Landscapes and Landforms of the Lesser Antilles written by Casey D. Allen and published by Springer. This book was released on 2017-07-19 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the highly touristed, but surprisingly under-researched Lesser Antilles region. After offering a brief overview of the region’s geologic and tectonic history, as well as its basic climatology, subsequent chapters then discuss each island’s (or island set’s) geomorphology and geology, and how the settlement history, tourism, and hazards have affected their individual landscapes. Written by regional experts and replete with up-to-date information, stunning color imagery, and beautiful cartography (maps), it is the only comprehensive, scientific evaluation of the Lesser Antilles, and serves as the region’s definitive reference resource. Accessible to non-experts and amateur explorers, the book includes in-depth discussions and reference sections for each island/island set. Usable as both a textbook and guidebook, it offers readers a straightforward yet detailed assessment of an interesting and intriguing – but often-overlooked and under-appreciated – locale.
Download or read book Dominica s National Park Geology and soils written by P. Narodny Honychurch and published by . This book was released on 1978 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Timescales and Processes of Island Arc Magmatism written by Tracy Howe and published by . This book was released on 2014 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Located in the centre of the Lesser Antilles intra-oceanic (island) arc, Dominica hosts three major stratovolcanic centres, a profusion of smaller lava dome complexes, and a series of pumiceous pyroclastic flow deposits (ignimbrites). Over the past 100 ka, Dominica has been the site of multiple silicic (andesitic-dacitic) eruptions including what is considered to be the largest eruption in the Caribbean in the past 200 ka, the Roseau Tuff eruption. This makes it a unique location in which to study the evolution of silicic volcanism in an island arc setting. Twenty new (U-Th)/He zircon and apatite ages obtained from 12 lava domes and 6 ignimbrites range from ~4 to ~744 ka. Combined with published 14C and K-Ar ages, these ages suggest that Dominica has experienced at least 28 eruptions in the past 100 ka. Pyroclastic deposits throughout the south of the island have overlapping whole-rock, mineral, and glass chemistry making fingerprinting of individual eruptions extremely difficult. Thus, the Roseau Tuff (with a proposed volume of~53 km3) likely represents material from at least six smaller eruptions, dated between 24 and 61 ka, which were erroneously correlated based on overlapping geochemical characteristics. Petrographic and geochemical analyses of lava and pumice samples reveal that Dominica's Late-Pleistocene to Recent volcanic deposits are almost entirely silicic (andesiticdacitic; ~57-67 wt.% SiO2) in composition and are characterized by wide ranges in mineral chemistry and a host of disequilibrium features. Mineral-mineral and mineral-melt equilibrium constraints indicate that three distinct components are involved in magma evolution and suggest that crystal recycling plays a major role in their petrogenesis. U-Th zircon rim ages show that most centres have experienced intermittent zircon crystallization over timescales of >350 ka. The preservation of variable zircon rim ages within individual samples implicates the existence of long-lived crystal mush beneath the island. Overlapping zircon age distributions within samples from centres up to 40 km apart on the surface suggest that this mush zone may be laterally extensive, reaching batholithic proportions. Geochemical and petrological constraints indicate that the mush is basaltic-andesitic in composition, and that the silicic composition of the erupted deposits results from entrainment of mafic antecrysts in interstitial rhyolitic melt. To the north, lavas additionally display evidence of assimilation, which is supported by the presence of Eocene zircons. Within Dominica's southernmost centre, exclusively young (
Download or read book Encyclopedia of Islands written by Rosemary G. Gillespie and published by Univ of California Press. This book was released on 2009-08-19 with total page 1110 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Islands have captured the imagination of scientists and the public for centuries - unique and rare environments, their isolation makes them natural laboratories for ecology and evolution. This authoritative, alphabetically arranged reference, featuring more than 200 succinct articles by leading scientists from around the world, provides broad coverage of all the island sciences. But what exactly is an island? The volume editors define it here as any discrete habitat isolated from other habitats by inhospitable surroundings. The Encyclopedia of Islands examines many such insular settings - oceanic and continental islands as well as places such as caves, mountaintops, and whale falls at the bottom of the ocean. This essential, one-stop resource, extensively illustrated with color photographs, clear maps, and graphics will introduce island science to a wide audience and spur further research on some of the planet's most fascinating habitats." --Book Jacket.
Download or read book Caribbean Volcanoes written by Haraldur Sigurdsson and published by Geological Association of Canada. This book was released on 1990 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Caribbean Volcanoes a Field Guide written by Haraldur Sigurdsson and published by . This book was released on 1990 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Encyclopedia of World Regional Geology written by Rhodes W. Fairbridge and published by Springer. This book was released on 1975-12 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stratigraphy and Geochemistry of a Fond St Jean Cinder Cone Dominica written by Taryn Isenburg and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Dominica is an independent island nation located in the central portion of the Lesser Antilles Island arc, a magmatic arc that results from subduction of the South American Plate beneath the Caribbean Plate (Smith et al. 2013). Subduction in this setting promotes partial melting of the mantle, producing magma that ultimately rises to the surface of the earth and erupts through variable styles of volcanism. Magmas may pond and differentiate on the way to the surface of the earth, resulting in deposition of chemically distinct rocks. Dominica is primarily composed of the intermediate rocks andesite and dacite, though an eruptive center in the southeast, Foundland Center, is composed predominantly of mafic basalts. Previous work (Smith et al., 2013; Wills, 1976) indicates that air fall samples collected at Fond St. Jean, a town within Foundland Center, are the most mafic samples collected on the island, and therefore potentially represent the islands least evolved rocks on record. This study analyses additional basaltic samples from a partially eroded cinder cone in Fond St. Jean. Techniques including inductively coupled plasma optical emission spectrometry (ICP-OES) and inductively coupled plasma mass spectrometry (ICP-MS), as well as petrographic analyses and solid-melt modeling are used to analyze the mineralogy and textures of these samples and the styles of volcanism that erupted them, as well as determine a potential composition of the mantle from which these rocks were derived. Additionally, field observations, elevation measurements, and measurements of the thickness of units composing the cinder cone are used to construct a stratigraphic section through the volcano. Field relationships and alternating textures of volcanic material imply changes in volcanic styles through time. Petrographic textural analyses indicate that both explosive and effusive volcanism contributed to the cinder cones formation. Additional petrographic analyses indicate that while mineralogy is consistent throughout the cinder done, minor zoning implies slight crystal fractionation within a magma chamber. Discrimination diagrams show major and trace elements for these samples are consistent with the expected chemistry of island arc basalts, making them good candidates for modeling mantle melting. 5-15% melting of a garnet free lherzolite mantle fits the data for these samples best, and trace element ratios indicate that sediment incorporated into the subduction zone contributed to the chemistry of the mantle melt.
Download or read book A Photographic Guide to the Birds of Jamaica written by Ann Haynes-Sutton and published by A&C Black. This book was released on 2009-01-01 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: Originally published as: Birds of Jamaica: a photographic field guide / Audrey Downer and Robert Sutton; photography, Yves Jacques Rey-Millet. Cambridge; New York: Cambridge University Press, 1990.
Download or read book Geologic and Tectonic Development of the North America Caribbean Plate Boundary in Hispaniola written by Paul Mann and published by Geological Society of America. This book was released on 1991 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Patterns of Distribution of Amphibians written by William Edward Duellman and published by JHU Press. This book was released on 1999-07-28 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sweet, University of California, Santa Barbara; Michael J. Tyler, University of Adelaide, Australia; Zhao Er-Mi, Chengdu Institute of Biology, Peoples Republic of China
Download or read book Caribbean Geology written by S. K. Donovan and published by . This book was released on 1994 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Abstracts written by and published by . This book was released on 1988 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
