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Search results for: dendrochronolog* in all categories
128 results found.
13 pages of results. 11. Catastrophe: An Investigation Into The Origins Of The Modern World (Book Review) [Journals] [Aeon]
... Greenland's Dye 3 and Grip bores, Antarctica's Byrd site, and the Quelccaya glacier in Peru gave rough approximations, as did geological stratigraphy and radiocarbon dating, but it was dendrochronology (tree-ring dating) that showed something dramatic happened right after the 535 event to give narrow, low-density cell structure to tree ring samples from around the world. Historical ... that resulted after the eruption of ancient Krakatoa. This was also dramatized in a recent PBS televised episode: Catastrophe! The Day the Sun Went Out. Awhile back, dendrochronologist Michael Baillie of Queen's University in Belfast, Ireland, reiterated his previous findings at a British Association for the Advancement of Science conference that there is evidence in dendrochronology for ...
12. C&C Review 1991 Issue (Volume XIII): Contents [Journals] [SIS Review]
... interpretation of pottery chronology for the MB/LB/Iron ages. Horizons: 1991 ISIS Fellowship Lecture given by Prof Manfred Bietak 28 Jesse Lasken: Should the European Oak Dendrochronologies be Re-examined? 30 In the first of three articles reviewing dendrochronology and calibrated radiocarbon dates, Jesse Lasken questions the soundness of the Irish and German oak chronologies and their ... application of calibrated radiocarbon dates. Alasdair Beal: A Bit Creaky? - Tree-Rings, Radiocarbon and Ancient History 38 In another critical examination of the statistics and methodology of the dendrochronologists, Alasdair Beal argues for an interdisciplinary approach to the problems of absolute dating. Forum 1: The SIS Evolution Debate Continued 43 Forum 2: Some New Chronology' ...
13. Recent Developments in Near Eastern Archaeology [Journals] [SIS Review]
... of the volume and is divided into the following sections: an introduction, Cypro-Phoenician Horizon, Egyptian Third Intermediate Period, Central Mediterranean Chronology, Radiocarbon Dating of the Aegean, Dendrochronological Prospects and Conclusion. Some of the material reiterates that already published in Centuries, some new points are made, and there are some replies to critics. One item ... what regions were used to construct different parts of the curves, or how the various dendrochronologies were combined. The problems are further aggravated by a tendency among radiocarbon scientists and dendrochronologists to reference articles without giving page numbers. What this all amounts to is that you put a number into their computer program and have to believe their result with no ...
14. The Future of the Past, and, Atlas of Ancient History (Book reviews) [Journals] [SIS Review]
... , which has bequeathed us vast quantities of wood in the form of boats, beams and statues, has fewer radio-carbon dates than any comparable old world culture, and no dendrochronology at all. ' He acknowledges that The Mesopotamian and Egyptian king lists, typically quoted with exact dates for each reign, are really floating chronologies, with no certainly ... of the conventional New Kingdom dates is all the more surprising in view of his comments on Egyptologists and their reaction to the latest Santorini eruption datings: ' .. . dendrochronologists have recently come up with an exact date of 1628 [BC] for it. This has surprised the Egyptologists, who had been working with a date at least ...
15. Society News [Journals] [SIS Workshop]
... . A date c.1160 BC for the eruption of Thera would then be consistent with the scientific chronologies. [But see M. G. L. Baillie: Dendrochronology and Thera: The Scientific Case', JACF 4 (1990/91), pp. 15-27.] After some discussion of Wayne Mitchell's astronomically derived dates [ ... represented by straight lines at 45 degrees) and the Intermediate Periods are assumed to be over-extended (represented by steep or vertical lines). The graph also assumes that the dendrochronologists have done their work accurately. Any mistake here would show as a step in the dendro line, and there is indeed a possible mismatch in the first millennium BC ...
16. Scientific Prehistory [Books]
... , 1950; 2Z, 19, 1956. Wigley, T. M. L, P. D. Jones, and K. R. Briffa, Cross-Dating in Dendrochronology, Archeological Science JA, 51-64,1987and Phys. Rev. Letters,l2 November, 1989. Wilson, J.G ., Cosmic Ray Physics, North ... Libby's death the situation has reversed to become "Calibrated Radiocarbon" by tree-ring dating While Libby contended that the cosmic ray flux has been constant for millions of years, today dendrochronologists are claiming wide fluctuations in cosmic ray intensities, resulting in great variations of 14C in the earth's atmosphere. Experimental results reveal only a constant cosmic ray flux. Moreover ...
17. Monitor [Journals] [SIS Workshop]
... 11.8 .90; Sunday Correspondent 12.8 .90 New uranium-thorium dating of corals in Barbados gives consistently older dates than radiocarbon. The uranium-thorium dates agree with dendrochronological dates for the last 11,000 years, so are preferred. The amount of 14C in the oceans would appear to have varied by as much as 40% ... sources: Antiquity 64, p. 210; New Scientist 16.6 .90, p. 30 The Sweet Track oak pathway in Somerset was a problem for the dendrochronologists who first tried to date it - by wiggle-matching with the master Irish oak chronology. It proved not datable as the wiggles would not match. Now a team under ...
18. The Ages of Bristlecone Pine [Journals] [Pensee]
... the oldest living things. The study of their wood is pertinent to climatology as well as chronology. Background of Tree-Ring Dating The techniques and theories of tree ring dating (dendrochronology) have their foundation in the work of A.E . Douglass in the early part of this century (3 ). Douglass and his successors, Glock, ... been successful (4 ). Three Practical Difficulties The fundamental prerequisite for cross matching is a distinctive pattern of ring widths. Unfortunately, such patterns are not as common as dendrochronologists might wish. In order for wood to exhibit a distinctive pattern it must have grown through a period when distinctive climatic variations occurred, and it must have been sensitive ...
19. Polymathics and Catastrophism: A Multidisciplinary Approach to Problems of Evolutionary Theory [Journals] [Kronos]
... that occurs when that chronology is finally abandoned in favor of another which is regarded as more "up to date". Such an abandonment occurred in the 1960's, when dendrochronology replaced radiocarbon dating among archeologists, especially those specializing in European prehistory. More precisely, archeologists who had previously accepted carbon-14 dates without reservation, encountered evidence that the amount ... The weakness in bristle-cone calibration dating, of course, is the assumption that bristle-cone pines invariably produce growth rings at the rate of one and only one per year. Those dendrochronologists who work with a variety of trees readily acknowledge that bad weather throughout the growing season can easily result in growth rings so narrow as wholly to escape detection in the ...
20. A Bit Creaky? - Tree Rings, Radiocarbon and Ancient History [Journals] [SIS Review]
... of contamination and measurement errors. It is also worth remembering that the tree-ring dates could be wrong. Conclusions It is not the purpose of this article to argue that either dendrochronology or radiocarbon dating is nonsense, to be pilloried, ignored or discounted: entertaining doubt about an idea is quite different from proving it wrong, and I have no ... articles on a variety of non-engineering subjects. He became the Editor of C & C Workshop in 1991. Like it or not, students of ancient history, physicists and dendrochronologists (people who study tree rings) are now locked in dispute over their different interpretations of ancient history. At first, historians who were tired of trying to make ...
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