Download PDF by Günther A. Wagner: Age Determination of Young Rocks and Artifacts. Physical and

By Günther A. Wagner

ISBN-10: 3642083315

ISBN-13: 9783642083310

ISBN-10: 3662036762

ISBN-13: 9783662036761

The Quaternary, which spans nearly the final 2 million years, is characterised through dramatic environmental alterations, generally known as the "ice age". in this interval, guy together with his manifold cultures advanced. makes an attempt at courting those occasions as effectively as attainable have made nice growth. The wide spectrum of actual and chemical courting tools, now on hand for courting human artifacts and Quaternary rocks, is changing into more and more tough to understand. during this publication some of the chronometric thoughts are comprehensively and intelligibly taken care of. through various case stories, taken from archaeology and Quaternary geology, the aptitude and difficulty of those suggestions are established. The e-book is meant more often than not for scientists and scholars of those fields, however the layman can also locate its lucrative.

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Extra info for Age Determination of Young Rocks and Artifacts. Physical and Chemical Clocks in Quaternary Geology and Archaeology

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1) of tephra (> 1 ka). Especially interesting are sequences, which contain in addition to paleoclimatic indicators fossils of early hominids and artifacts as well. Our knowledge on the age of the early hominids in East Africa is founded nearly exclusively on K - Ar data. By means of the Ar-Ar laser technique the ages of discrete feldspar crystals (sanidine) can be precisely determined. Provided the ash layers (> 10 ka) contain glass fragments or titanite they also can be dated by means of fission tracks (Sect.

2). The paleomagnetic field reversals caused by the changing polarity of the Earth's magnetic dipole field are recorded by deep-sea sediments. Since the polarity reversals affect the magnetic field worldwide and simultaneously, paleomagnetism is an outstanding stratigraphic tool (Chap. 9). Since continental sediments also record the polarity changes, magnetostratigraphy allows the linkage of continental to deep-sea chronology. 2 Materials In the present chapter geological, archaeological and historical materials will be listed that can be analyzed by means of the dating methods which are the content of this book.

2). Commonly, ceramic clays are fired at 7oo-8oo°C, and during cooling below the Curie temperature the prevailing magnetic field is thermoremanently frozen in. Archaeomagnetic dating (Chap.

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Age Determination of Young Rocks and Artifacts. Physical and Chemical Clocks in Quaternary Geology and Archaeology by Günther A. Wagner

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