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Dedicated to Bob Hatcher, this Memoir explores linkages between tectonic processes through a series of field-, numerical- and laboratory-based studies, concentrating on feedback mechanisms within ancient and evolving orogens by which individual or linked tectonic processes may influence or predetermine the operation of other processes in space and time. Case studies cover a wide range of ancient to modern orogens: the Svecofennian of southern Finland, the Gyeonggi Massif of Korea, the Caledonides of northern Scotland, the Variscan of the East European craton, the Appalachians of the eastern United States, the European Alps and Dinarides, north Cascades of the northwestern United States, and the Himalaya. Emphasis is placed on integration between data sets developed from a wide range of analytical approaches, including: field mapping, seismic reflection profiling, strain analyses, petrology, isotopic dating, and numerical modeling-based studies of thermal evolution associated with tectonic processes such as thrust-related burial and exhumation.
Christian Wenger (1698-1772) was born in Bern, Switzerland. He fled to the Palatinate in 1705, immigrated to America in 1727 and settled in Lancaster, Pennsylvania where he married Eve Graybill/Krabill/ Kraybill. Descendants and relatives scattered throughout the United States and into Canada.
Sedimentological models capture the processes and subsequent deposits that explain the distribution of facies within a depositional system. The first sedimentological models for deep-water depositional systems were portrayed as idealized shelf break to slope submarine basin sediment dispersal systems. These models were developed from ancient outcrop exposures (Mutti and Lucchi, 1972) and from the modern day seafloor (Normark, 1970, 1978). More recent model development has been based largely on observations from modern slope channels including the Amazon Channel (Pirmez and Imran; 2003), offshore West African (Abreu et al., 2003; Deptuck et al., 2003), and attempts at generalization from mult...
This dissertation comprises three chapters focusing on the evolution of marine sedimentary successions that formed as the fill of large submarine channel belts and their tributary systems. These channel belts serve as conduits for gravel- and sand-laden sediment gravity flows along the axes of narrow, elongate foreland basins. In the past, axial channel belts have not been widely recognized in submarine foreland basins (Mutti et al., 2003). However, recent studies have demonstrated the presence of axial channels, 3-8 km in width and > 100 km in length, in a number of marine foredeeps including the Cretaceous Magallanes Basin, southern Chile, and the Tertiary Molasse Basin, northern Austria (...
Oxygen and hydrogen isotope properties of hydrous silicate minerals formed by weathering, hydrothermal, metamorphic and igneous processes provide a record of fluid-rock interaction. We utilize this isotopic record to 1) determine the source of geothermal fluids in two active geothermal systems in Iceland, and to evaluate the consequences of fluid-rock interaction on host rock, fluid and magma chemistry, and 2) to better characterize Earth's surface environments during the early Archaean. Geothermal systems within the active volcanic zone of Iceland provide a unique natural laboratory for studying fluid-rock interaction in magma-hydrothermal systems where the Mid-Atlantic ridge emerges onto l...
This book focuses on the strong relation between the tectonic evolution of the Southernmost Andes and their closest southern neighbors, the Scotia Sea and Antarctica. Some episodes are related to processes of global significance such as the opening of the Drake Passage, which is somehow linked to Late Cenozoic cooling. Many of the topics covered in the book are subjects of heated debates; as such, not only the latest data and approaches are presented, but different points of view as well. The chapters examine the interrelation between main geodynamic processes and plate tectonics from a multidisciplinary perspective. This Paleozoic-Cenozoic geodynamic evolution of the Southernmost Andes involved interrelated metamorphic, magmatic, sedimentary, and deformational processes directed by plate tectonics. The main topics cover the evolution of the Rocas Verdes basin and the Cordillera Darwin high-grade metamorphic complex, growth of the Patagonian Batholith, development of the Patagonian Orocline, the opening of the Drake Passage during growth of the Scotia Sea, evolution of the Austral-Magallanes foreland basin and its related fold and thrust belt.