Download or read book Sediment Analysis in Reykjafjardarall Trough Northern Iceland written by Eric B. James and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Research was conducted on two sediment cores (B997-326 PC1 and PC2) taken from the Reykjafjardarall trough off the north coast of Iceland. Due to unique ocean currents and volcanism near Iceland, it is an ideal setting in which to study paleoclimate and paleoceanography. The cores were described and analyzed for carbonate, bulk density, and magnetic susceptibility (MS). They were also X-radiographed to look at sediment structure and the presence of ice rafted debris (IRD). Carbon 14 dates were used to determine core chronology, and seismic profiles were taken to determine the overall sediment structure within the trough. The basal date of one of the cores is estimated at 13,000 years and ash layers were found in one of cores that are dated at 10,300 years. PCI has three lithofacies that proceed from a sandier mud at the base, to a laminated IRD rich mud in the middle, and an unlaminated mud at the top. PC2 has a unit similar to the top of PC1 at its base and an IRD free unit at the top. PC2 is split by a marked ash layer. Carbonate is interpreted as being deposited in a time of high ocean fertility and a lack of ice cover, whereas low carbonate is assumed to be ice covered, low fertility ocean deposits. The presence of IRD indicates an ocean environment under or near ice and low IRD counts indicate a normal marine environment free of ice. The cores suggest a gradual transition from a glacial environment at the base of PC1 to an open marine environment at the top of PC2. They also indicate that the ice has been gradually retreating for at least 13,000 years with IRD decreasing and carbonate increasing. Some sediment is thought to have been lost from one of the cores because it does not reflect a gradual increase in carbonate near the top, and some ash layers are missing. This is likely due to some type of current or erosional event, possibly an earthquake, in the particular area, which is supported by the seismic profile. Timing of the advance and retreat of the ice sheets will be possible when all carbon 14 dates are available.

Download or read book Arctic Antarctic and Alpine Research written by and published by . This book was released on 2003 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Radiocarbon Date List IX Antarctica Arctic Ocean and the Northern North Atlantic Region written by Laryn Micaela Smith and published by Boulder, Colo. : University of Colorado, Institute of Arctic and Alpine Research. This book was released on 2000 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Palaeolithic Origins of Human Burial written by Paul Pettitt and published by Routledge. This book was released on 2010-12-20 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: Humans are unique in that they expend considerable effort and ingenuity in disposing of the dead. Some of the recognisable ways we do this are visible in the Palaeolithic archaeology of the Ice Age. The Palaeolithic Origins of Human Burial takes a novel approach to the long-term development of human mortuary activity – the various ways we deal with the dead and with dead bodies. It is the first comprehensive survey of Palaeolithic mortuary activity in the English language. Observations in the modern world as to how chimpanzees behave towards their dead allow us to identify ‘core’ areas of behaviour towards the dead that probably have very deep evolutionary antiquity. From that point, the palaeontological and archaeological records of the Pliocene and Pleistocene are surveyed. The core chapters of the book survey the mortuary activities of early hominins, archaic members of the genus Homo, early Homo sapiens, the Neanderthals, the Early and Mid Upper Palaeolithic, and the Late Upper Palaeolithic world. Burial is a striking component of Palaeolithic mortuary activity, although existing examples are odd and this probably does not reflect what modern societies believe burial to be, and modern ways of thinking of the dead probably arose only at the very end of the Pleistocene. When did symbolic aspects of mortuary ritual evolve? When did the dead themselves become symbols? In discussing such questions, The Palaeolithic Origins of Human Burial offers an engaging contribution to the debate on modern human origins. It is illustrated throughout, includes up-to-date examples from the Lower to Late Upper Palaeolithic, including information hitherto unpublished.

Download or read book The People of Sunghir written by Erik Trinkaus and published by . This book was released on 2014 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this latest volume in the Human Evolution Series, Erik Trinkaus and his co-authors synthesize the research and findings concerning the human remains found at the Sunghir archaeological site. It has long been apparent to those in the field of paleoanthropology that the human fossil remains from the site of Sunghir are an important part of the human paleoanthropological record, and that these fossil remains have the potential to provide substantial data and inferences concerning human biology and behavior, both during the earlier Upper Paleolithic and concerning the early phases of human occupation of high latitude continental Eurasia. But despite many separate investigations and published studies on the site and its findings, a single and definitive volume does not yet exist on the subject. This book combines the expertise of four paleoanthropologists to provide a comprehensive description and paleobiological analysis of the Sunghir human remains. Since 1990, Trinkaus et al. have had access to the Sunghir site and its findings, and the authors have published frequently on the topic. The book places these human fossil remains in context with other Late Pleistocene humans, utilizing numerous comparative charts, graphs, and figures. As such, the book is highly illustrated, in color. Trinkaus and his co-authors outline the many advances in paleoanthropology that these remains have helped to bring about, examining the Sunghir site from all angles.

Download or read book Geological and Geophysical Investigations of Continental Margins written by Joel S. Watkins and published by . This book was released on 1979 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Early Modern Human from Tianyuan Cave China written by Hong Shang and published by Texas A&M University Press. This book was released on 2010-06-18 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: For more than a century, scientists have returned time and again to the issue of modern human emergence-the when and where of the evolutionary process and the human behavioral and biological dynamics involved. The 2003 discovery of a human partial skeleton at Tianyuandong (Tianyuan Cave) excited worldwide interest. The first human skeleton from the region to be directly radiocarbon-dated (to 40,000 years before present), its geological age places it close to the time period during which modern humans became permanently established across the Old World (between 50,000 and 35,000 years ago). Through detailed description and interpretation of the most complete early modern human skeleton from eastern Asia, The Early Modern Human from Tianyan Cave, China, addresses long-term questions about the ancestry of modern humans in eastern Asia and the nature of the changes in human behavior with the emergence of modern human biology. This book is a detailed, paleontological and paleobiological presentation of this skeleton, its context, and its implications. By providing basic information for this important human fossil, offering inferences concerning the population processes involved in modern human emergence in eastern Eurasia, and by raising questions concerning the adaptations of these early modern human hunter-gatherers, The Early Modern Human from Tianyuan Cave, China will take its place as a core contribution to the study of modern human emergence.

Download or read book Climatic Changes on a Yearly to Millennial Basis written by N.-A. Mörner and published by Springer. This book was released on 1984-06-30 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: