Download or read book Biochronology and Paleontology of Uppermost Triassic Rhaetian Radiolarians Queen Charlotte Islands British Columbia Canada written by Elizabeth S. Carter and published by . This book was released on 1993 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thèse. Biologie. Médecine. 1993
Download or read book Biochronology and Paleontology of Uppermost Triassic Rhaetian Radiolarians Queen Charlotte Islands British Columbia Canada written by and published by . This book was released on 1991 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radiolarians in the Sedimentary Record written by P. De Wever and published by CRC Press. This book was released on 2002-02-28 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radiolarians in the Sedimentary Record presents the current state of knowledge on fossil radiolarians. The author discusses the record, as well as new integrated taxonomic systems at the family level. The book provides comprehensive coverage of the fossil record of these unicellular organisms. It also discusses their important role in the history of the Earth and their development of the biosphere. This text will prove indispensable for graduate students and researchers in geology, oceanography and earth sciences.
Download or read book Paleontological Resources of Haida Gwaii Queen Charlotte Islands British Columbia written by J. W. Haggart and published by . This book was released on 2008 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Triassic Timescale written by Spencer G. Lucas and published by Geological Society of London. This book was released on 2010 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mesozoic Era begins with the approximately 50-million-year-long Triassic Period, a major juncture in Earth history when the vast Pangaean supercontinent completed its assembly and began its fragmentation, and the global biota diversified and modern-ized after the end-Permian mass extinction, the most extensive biotic decimation of the Phanerozoic. The temporal ordering of geological and biotic events during Triassic time thus is critical to the interpretation of some unique and pivotal events in Earth his-tory. This temporal ordering is mostly based on the Triassic time-scale, which has been developed and refined for nearly two centu-ries. This book reviews the state of the art of the Triassic timescale and includes comprehensive analyses of Triassic radio-isotopic ages, magnetostratigraphy, isotope-based and cyclostratigraphic correlations and timescale -relevant marine and non-marine bio-stratigraphy.
Download or read book Biochronology and Paleontology of Lower Jurassic Hettangian and Sinemurian Radiolarians Queen Charlotte Islands British Columbia written by Elizabeth S. Carter and published by . This book was released on 1998 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: The excellent preservation of radiolarians in formations on the Queen Charlotte Islands, and the precision to which they can be dated from closely associated ammonites and other fossils, makes them especially suitable for constructing integrated biochronological zonations and detailed taxonomic studies. The purpose of this study is to develop a detailed radiolarian zonation for the Lower Jurassic, to integrate new radiolarian zones with ammonite assemblages for that period, to document the range and distribution of the Queen Charlotte Islands radiolarians as completely as possible, and to describe new taxa. The first part reviews the lithostratigraphy of the formations studied, the independent fossil dating methods used, the diversity and composition of the radiolarian faunas observed, the radiolarian biochrolology and chronostratigraphy, and paleobiogeography of the area's radiolarians and ammonites. Part 2 is a systematic palaeontology describing radiolarian species by suborder, family, and genus.
Download or read book Paleobiology of the Polycystine Radiolaria written by David Lazarus and published by John Wiley & Sons. This book was released on 2020-12-29 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polycystine radiolaria are exclusively marine protists and are found in all ocean waters, from polar regions to the tropics, and at all water depths. There are approximately 600 distinct described living species and several thousand fossil species of polycystines. Radiolarians in general, and polycystines in particular, have recently been shown to be a major component of the living plankton and important to the oceanic carbon cycle. As fossils radiolarians are also fairly common, and often occur in sediments where other types of fossils are absent. This has made them very valuable for certain types of geologic research, particularly estimating the geologic age of the sediments containing them, and as guides to past oceanic water conditions. As our current understanding of the biology, and even taxonomy of the living fauna is still very incomplete, evolutionary studies based on living polycystines are still rare. However, the common occurrence of numerous specimens for many species, and in a wide variety of oceanic environments, provides an excellent opportunity to study the processes of biologic evolution in the fossil record. Paleobiology of the Polycystine Radiolaria is the first major book on radiolarians to appear in the western literature since 2001. Focusing on living and fossil siliceous shelled radiolarians, it is notable for its emphasis not upon morphologic or taxonomic detail but on concepts and applications. The book attempts to provide a balanced, critical review of what is known of the biology, ecology, and fossil record of the group, as well as their use in evolutionary, biostratigraphic and paleoceanographic research. Full chapters on the history of study, and molecular biology, are the first ever in book form. Written for an audience of advanced undergraduate to doctoral students, as well as for a broad range of professionals in the biological and Earth sciences, Paleobiology of the Polycystine Radiolaria summarizes current understanding of the marine planktonic protist group polycystine radiolaria, both in living and fossil form.
Download or read book The Global Triassic written by Spencer G. Lucas and published by New Mexico Museum of Natural History and Science. This book was released on 2007-01-01 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Triassic of the American West written by Spencer G. Lucas and published by New Mexico Museum of Natural History and Science. This book was released on 2007-01-01 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalogue and Systematics of Pliensbachian Toarcian and Aalenian Radiolarian Genera and Species written by Špela Gorièan and published by Založba ZRC. This book was released on 2006-01-01 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Survey of Canada Current Research Online no 2000 A7 written by Elizabeth S. Carter and published by Natural Resources Canada. This book was released on 2000 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Upper Triassic sections outcropping on the Queen Charlotte Islands contain outstanding successions of conodont and radiolarian microfossils. This report focuses on the successions about the Carnian-Norian boundary at several key localities. This boundary may coincide with an interval of significant change in global fauna and flora, particularly in terrestrial habitats. The purpose of the study reported is to demonstrate faunal change that may potentially be used in global correlation and definition of the Carnian-Norian boundary, and thus contribute towards the resolution of historical events that date from that time. The report summarizes the radiolarian change within the boundary interval identified primarily by conodonts but supplemented by some molluscan data.
Download or read book Bulletin Geological Survey of Canada written by and published by . This book was released on 1950 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Geologic Time Scale 2012 written by F M Gradstein and published by Elsevier. This book was released on 2012-08-14 with total page 1176 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Geologic Time Scale 2012, winner of a 2012 PROSE Award Honorable Mention for Best Multi-volume Reference in Science from the Association of American Publishers, is the framework for deciphering the history of our planet Earth. The authors have been at the forefront of chronostratigraphic research and initiatives to create an international geologic time scale for many years, and the charts in this book present the most up-to-date, international standard, as ratified by the International Commission on Stratigraphy and the International Union of Geological Sciences. This 2012 geologic time scale is an enhanced, improved and expanded version of the GTS2004, including chapters on planetary scales, the Cryogenian-Ediacaran periods/systems, a prehistory scale of human development, a survey of sequence stratigraphy, and an extensive compilation of stable-isotope chemostratigraphy. This book is an essential reference for all geoscientists, including researchers, students, and petroleum and mining professionals. The presentation is non-technical and illustrated with numerous colour charts, maps and photographs. The book also includes a detachable wall chart of the complete time scale for use as a handy reference in the office, laboratory or field. The most detailed international geologic time scale available that contextualizes information in one single reference for quick desktop access Gives insights in the construction, strengths, and limitations of the geological time scale that greatly enhances its function and its utility Aids understanding by combining with the mathematical and statistical methods to scaled composites of global succession of events Meets the needs of a range of users at various points in the workflow (researchers extracting linear time from rock records, students recognizing the geologic stage by their content)
Download or read book Retrograde Evolution During Major Extinction Crises written by Jean Guex and published by Springer. This book was released on 2016-02-05 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first of its kind, providing in-depth analysis of the retrograde evolution occurring during major extinction periods. The text offers a non-strictly adaptative explanation of repetition of phyla after the major extinctions, utilizing a study of seven phylogenetically distinct groups. This opens a new experimental field in evolutionary biology with the possibility of reconstructing ancestral forms in lab by applying artificial stresses.
Download or read book Mass Extinction written by Ashraf M.T. Elewa and published by Springer Science & Business Media. This book was released on 2007-12-03 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present book combines three main aspects: five major mass extinctions; contributions on some other minor extinctions; and more importantly contributions on the current mass extinction. All three aspects are introduced through interesting studies of mass extinctions in diverse organisms ranging from small invertebrates to mammals and take account of the most accepted subjects discussing mass extinctions in insects, mammals, fishes, ostracods and molluscs.
Download or read book Canadian Journal of Earth Sciences written by and published by . This book was released on 2005 with total page 996 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin Geological Survey of Canada written by Geological Survey of Canada and published by . This book was released on 1998 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
