Download or read book Middle and Late Eocene Neogene and Quaternary Foraminiferal Faunas from Eua and Vava u Islands Tonga Group written by G. C. H. Chaproniere and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Extinction and Biogeography of Tropical Pacific Birds written by David W. Steadman and published by University of Chicago Press. This book was released on 2006-10-15 with total page 609 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publisher Description
Download or read book Geology and Submarine Resources of the Tonga Lau Fiji Region written by Andrew J. Stevenson and published by Sopac Secretariat. This book was released on 1994 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oil Plays in Tonga Southwest Pacific written by and published by . This book was released on 1993 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book List of Publications and Reports written by and published by . This book was released on 1994 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Zealand Journal of Geology and Geophysics written by and published by . This book was released on 2004 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cenozoic Record of Elongate Cylindrical Deep sea Benthic Foraminifera in the Southern and North Pacific Oceans and the Impact of the Early Eocene Global Warming Events written by Liesbeth Marie-Thérèse Karel Van Kerckhoven and published by . This book was released on 2014 with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was undertaken as a contribution to trying to determine the causes of the late Pliocene-middle Pleistocene extinction of a group of elongate deep-sea benthic foraminifera with specialised apertures (the “Extinction Group”, EG). The full Cenozoic evolutionary history of the EG was documented in the Southern and North Pacific Oceans in an attempt to identify palaeoenvironmental drivers of evolution of this group. A second objective was to assess whether the EG species were impacted by the late Palaeoecene-early Eocene warm events, like the ~30 % of deep-sea benthic foraminifera that became extinct during the Palaeocene/Eocene thermal maximum (PETM). The EG consists of the families Chrysalogoniidae, Glandulonodosariidae, Stilostomellidae, Ellipsoidinidae, Pleurostomellidae, Plectofrondiculariidae and several species from the Family of Nodosariidae. In this study, I recorded 102 species of the EG, including 15 taxa that had not been recognised previously. Five of these have now been formerly described as new species – Anastomosa boomgaarti Hayward and Van Kerckhoven, 2012; Anastomosa loeblichi Hayward and Van Kerckhoven, 2012; Siphonodosaria robertsoni Hayward and Van Kerckhoven, 2012; Ellipsoidella tappanae Hayward and Van Kerckhoven, 2012; Nodosarella kohli Hayward and Van Kerckhoven, 2012. Census counts on 98 EG species in 211 faunal samples (>63 mm) between the early Palaeocene (~65.5 Ma) and middle Eocene (~40 Ma) in Southern Ocean ODP Sites 689 and 690, and North Pacific Ocean ODP Site 865 indicated that there were no extinctions of these taxa during the PETM, and only three EG species had their global lowest occurrences within 0.5 myr of the PETM. However, this extreme warm event did impact on EG faunal composition on a global scale, with Strictocostella spp. becoming less dominant to the advantage of pleurostomellids and several other EG taxa. In terms of abundances and species richness, the EG was not or only slightly impacted by the PETM, and impacts differed between regions. The increase in species richness at the start of the PETM in the Southern Ocean possibly reflects a survival mechanism of the EG to the changing environmental conditions. Census counts on 92 EG species in 160 faunal samples between the late Cretaceous (~67.9 Ma) and Pleistocene (~0.5 Ma) in Southern Ocean ODP Site 689 and North Pacific Ocean ODP Site 1211 confirmed the EG thrived during the middle Eoceneearly Oligocene and went through periods of enhanced turnover and faunal composition changes during the rapid Eocene/Oligocene cooling event and the middlelate Miocene coolings. The Oligocene announced the start of the “Tweenhouse World” during which relative abundances of the EG in the benthic foraminiferal fauna started to decrease. However, EG diversity remained high during the Oligocene worldwide, possibly as a survival mechanism to compete with the benthic foraminiferal species with new ecological strategies (phytodetritus-feeding). Miocene decreases in EG relative abundances were mostly marked at the abyssal location, where EG faunal composition also went through major changes at ~10 Ma. Both locations, at opposite sides of the world, had 52 EG species in common, including most of the most common species. Average EG species duration was ~25 myrs in the Southern Ocean, and ~27 myrs in the North Pacific Ocean, concurring with findings of previous Cenozoic studies on the EG. From these studies, I conclude that the EG was affected by both warming and cooling extreme events in the deep-sea, possibly indirectly via their food source, to which they were highly adapted with specialised apertural modifications. The repeated preferred targeting of the usually highly successful stilostomellids, suggests species from this family were most specialised and also more vulnerable to extreme changes in environmental conditions. The decline in EG abundance and diversity during the “Tweenhouse” and “Icehouse World” oceans and their eventual extinction during the Mid-Pleistocene Transition were likely related to progressive and episodic global cooling impacting on the food source of this specialised group of deep-sea benthic foraminifera.
Download or read book Le Pacifique Sud written by Frédéric Angleviel and published by Presses Univ de Bordeaux. This book was released on 1991 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Altered Ecologies written by Simon Haberle and published by ANU E Press. This book was released on 2010-11-01 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: Like a star chart this volume orientates the reader to the key issues and debates in Pacific and Australasian biogeography, palaeoecology and human ecology. A feature of this collection is the diversity of approaches ranging from interpretation of the biogeographic significance of plant and animal distributional patterns, pollen analysis from peats and lake sediments to discern Quaternary climate change, explanation of the patterns of faunal extinction events, the interplay of fire on landscape evolution, and models of the environmental consequences of human settlement patterns. The diversity of approaches, geographic scope and academic rigor are a fitting tribute to the enormous contributions of Geoff Hope. As made apparent in this volume, Hope pioneered multidisciplinary understanding of the history and impacts of human cultures in the Australia- Pacific region, arguably the globe's premier model systems for understanding the consequences of humans colonization on ecological systems. The distinguished scholars who have contributed to this volume also demonstrate Hope's enduring contribution as an inspirational research leader, collaborator and mentor. Terra Australis leave no doubt that history matters, not only for land management, but more importantly, in alerting settler and indigenous societies alike to their past ecological impacts and future environmental trajectories.
Download or read book New Caledonia written by P. Maurizot and published by Geological Society of London. This book was released on 2020-07-09 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: This memoir summarizes the current knowledge of New Caledonia’s geology, geodynamic evolution, and mineral resources, based on published and unpublished information. It comprises 10 research papers, each addressing a particular geological assemblage or topic. After an introductory chapter, and a review of the published geodynamic models of evolution of the SW Pacific, chapters 3 to 5 focus on the main geological assemblages of Grande Terre: the Pre-Late Cretaceous basement terranes, the Late Cretaceous to Eocene cover, and the Eocene subduction-obduction complex, one of the largest and best-preserved in the world. Chapter 6 is devoted to the Loyalty Islands and Ridge. Chapter 7 deals with the mostly terrestrial post-obduction units including regolith. Chapter 8 deals with palaeobiogeography and discuss plausible scenarios of biotic evolution. Chapters 9 and 10 provide an comprehensive review of New Caledonia’s mineral resources. The volume will interest stratigraphers, sedimentologists, marine geologists, palaeontologists, palaeogeographers, igneous and metamorphic petrologists, geochemists, geochronologists, and specialists in tectonics, geodynamic evolution, regolith, ophiolites, and economic geology.
Download or read book Active Margins and Marginal Basins of the Western Pacific written by Brian Taylor and published by American Geophysical Union. This book was released on 1995-01-09 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 88. This volume focuses on the volcanic, fluid, sedimentary, and tectonic processes occurring in the trencharc-backarc systems of the western Pacific—a natural regional focus for studies of these themes. The results of ocean drilling and associated site surveys in the western Pacific have brought fundamental changes to our understanding of volcanism, crustal deformation, fluid circulation, and sedimentation in active margins and marginal basins. Our goal here is to synthesize the results of ocean drilling in a multi-disciplinary manner, including a comparison of the findings from drilling legs having similar themes, and to emphasize the significance of these results to the broader geoscience community.
Download or read book Investigations of the Northern Melanesian Borderland written by Thomas Mark Brocher and published by Circum-Pacific Council for Energy & Mineral Resources. This book was released on 1985 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Conchology written by Thomas Say and published by . This book was released on 1830 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New England Orogen 2010 written by Solomon; Blevin Buckman (Phillip L.; NEO Conference (2010 : University of New England, Armidale)) and published by . This book was released on 2010 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Samoan Foraminifera written by Joseph Augustine Cushman and published by . This book was released on 1924 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Contributions to Geology written by Isaac Lea and published by . This book was released on 1833 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Challenger Foraminifera written by Robert Wynn Jones and published by Oxford University Press, USA. This book was released on 1994 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text reproduces the colour plates from one of the standard references on the foraminifera (the 1884 "Challenger Report"). The taxonomic information is revised and very complete, including locality details and comments on the status of specimens. This revision has particular application in increasing geological understanding and in reducing technical risk in petroleum exploration. It should be of value to palaeontologists (academic and industrial, especially the petroleum industry), geologists, oceonographers, marine biologists, and historians of science.
