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Search results for: dendrochronolog* in all categories

110 results found.

11 pages of results.
... From: SIS Chronology& Catastrophism Review 1991 (Vol XIII) Home¦ Issue Contents Should the European Oak Dendrochronologies be Re-examined? By Jesse E. Lasken Jesse E. Lasken has an A.B. (with Honors) in Economics from the University of Michigan (1963), J.D. from the University of Michigan Law School (1966) and LL.M ... results. But are they truly independent? Relationship of the north German and Irish oak dendrochronologies As will be discussed shortly, at certain stages in the construction of the Irish oak dendrochronology, cross-dating with the German oak dendrochronology was employed. The completion of an unbroken Irish oak dendrochronology might allow its authors to claim independent, internal integrity for it and to argue ... basis (Munro, 1984 and Wigley et al., 1987). It has also been argued by Yamaguchi (1986) that CROS and other similar computer programs used by dendrochronologists routinely yield multiple matches. Even though one of the principal authors of the Irish oak chronologies has written that 'dendrochronology is not going to work' if incorrect ring matches do not ...
Terms matched: 5  -  Score: 755  -  05 Mar 2003  -  32k  -  URL:
2. Scientific Dating Methods In Ruins [The Velikovskian $]
... tree ring chronology for Egypt and the Eastern Mediterranean that conforms to those of the other regions. However, trees are and were scarce in countries such as Egypt, so that dendrochronologies of these regions have never been developed. The Eastern Mediterranean tree ring chronology goes back no farther in time than 1073 AD. (31) Nearly all discussions about dendrochronological studies ... support the established chronology. (3) What Stiebing offers, in part, to refute the historical revisions, are four scientific dating methods: radiocarbon (C-14) dating, dendrochronology, thermoluminescence and stratigraphy. These methodologies are, according to Stiebing, in full agreement with the established chronology and, therefore, cannot be invoked to support major revisions of ancient ... apply to the long chronology derived from bristlecone pines. The previously discussed work, carried out by the provincial government of Ontario, Canada, between 1984 and 1990, showed that dendrochronologists were able to do their tree ring analysis only by knowing the climate stresses and the insect and disease stresses, year by year, for each stand of trees. Without this ...
Terms matched: 5  -  Score: 676  -  05 Mar 2003  -  89k  -  URL:
... , 3603-3612). Until more comprehensive knowledge of carbon 14 decay dependence is available, this appears to be a satisfying assumption. 3. C. W. Ferguson, "Dendrochronology of Bristlecone Pine, Pinus Aristata: Establishment of a 7484-year Chronology in the White Mountains of Eastern-central California, U.S.A.," 1. U. Olsson, ed., ... dates, then the radiocarbon method can be calibrated by this means to give absolute, rather than merely relative, dating. The independent dating method most promising for this purpose is dendrochronological (tree-ring) dating of bristlecone pines (3). However, the reliability of this method has not been verified (4). Moreover, the irregular climatic conditions and ... B.C.). Clearly, data from the current calibration curves are required for evaluation. Figure 1. Y-axis: measured C13/Cl2 ratio (in per mil) of dendrochronologically-dated bristlecone pine samples. X-axis: dendrochronological date. Note: the ratios of 43 samples of post-1850 wood are represented by their average value. Error in measurement is shown by the ...
Terms matched: 4  -  Score: 501  -  05 Mar 2003  -  44k  -  URL:
... by 108 years and confirming the correctness of the fit' (ArkST VIII p. 457). This appears to show up some weakness in Kuniholm's methods for matching up local dendrochronologies, as has already been pointed out for the case of Tille Hoyuk (C&CW 1994:1 p. 20). Once again, though, Kuniholm is to ... may be wrong. At present it seems that we can not rely on anything from ice-cores in the BC period but the on-going research is very interesting. Since the 1628 BC dendrochronology event now looks unlikely to relate to Thera, the scientific and archaeological communities will presumably have to accept a date c. 1525BC (time of Ahmose, first pharaoh of the ... up significantly in tree ring growth patterns. This is why it is thought that dust trapped in the upper atmosphere, inhibiting the warmth of the sun, was responsible for historical dendrochronological anomalies, which include the mini ice age. In such a scenario a dusty haze in the sky may be the reason why sun spots went unnoticed. In order to emphasise ...
Terms matched: 4  -  Score: 493  -  05 Mar 2003  -  19k  -  URL:
... download CALIB, the computer version, free from the Internet ( is still no sign of a final publication of any of the dendrochronologies on which the curves are based and it is very difficult even to establish what trees from what regions were used to construct different parts of the curves, or how the various ... measured in the first decades after the discovery of C-14 dating should not be taken too seriously' (Bruins& van der Plicht, Radiocarbon 1998, p. 621). Dendrochronology suffers from similar problems- e.g. a timber sample from a Hittite site (Masat), which supposedly proved the conventional date for Suppiluliumas, turns out to be of uncertain ... from 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 evidence. ...
Terms matched: 4  -  Score: 481  -  05 Mar 2003  -  21k  -  URL:
... Jericho's destruction in the 1580s, hence the Exodus link which the newspapers jumped on. However, the large date ranges, never mind fundamental questions about C14 calibration and the unpublished dendrochronology on which it is based, render any conclusions speculative. Wild assertions continue to appear concerning ice core results. In Biblical Archaeology Review 1995:1 p. 22 it was ... precisely fixed the 1500 year 'floating' section by identifying a particular major growth anomaly as caused by Thera. This point on the floating chronology he then fixes at 1628BC- the dendrochronologists' preferred date for Thera. Although the event caused narrow rings in Ireland, it caused wide ones in Anatolia, which Kuniholm explains as due to increased summer precipitation giving an ... evidence, while preferring a 17th century date, by no means rules out their date in the 16th century (due to a wiggle in the calibration curve). The Irish dendrochronological aberration at 1628BC has not been proven to relate to Thera. Bietak in his new book Avaris... (British Museum, 1996) is scathing about the implications of ...
Terms matched: 3  -  Score: 377  -  05 Mar 2003  -  16k  -  URL:
... fairly and dispassionately, stating squarely when he disagrees with him but crediting him for initiating much current research. The first two chapters provide a highly readable summary of the development of dendrochronology and form a good introduction to the subject. However as soon as Baillie strays from his own speciality, things go awry.- As an attempt at interdisciplinary scholarship Exodus to ... Greenland ice cores, from a layer with a sulphur-spike dated to c. 1628BC, were analysed and one thing was made clear- the particles did not come from Thera. Dendrochronologists and supporters of a high Theran chronology now have to question either the dating of the ice core in question or the results of the analysis. There is now no consensus- ... and present, is unlikely to pique the interest of archaeologists with its laboured speculations on Stonehenge. Mike Baillie's Exodus to Arthur is a different matter. It is written by a dendrochronologist who works in archaeology (rather than an astronomer) and, further, one who has been acquainted with the SIS for several years. With his broad ranging contacts Baillie has ...
Terms matched: 3  -  Score: 354  -  05 Mar 2003  -  21k  -  URL:
... new 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 independence, ... from one another and from the bristlecone pine chronology in the USA. Bernard Newgrosh: Calibrated Radiocarbon and 'the Methodological Fault-Line' 35 Examines the difficulties caused even for conventional historians by the 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' Issues 49 Review: The Cosmic Winter reviewed by Dick Atkinson 51 Two of the world's leading neo-catastrophists, Victor Clube and Bill Napier have written a stimulating book, The Cosmic Winter, which argues that ...
Terms matched: 3  -  Score: 347  -  01 Sep 2004  -  6k  -  URL:
9. Letters [SIS C&C Workshop $]
... known of how and when the bog was formed and how the trees came to be there. For much of the period covered, workers in this field have had only other dendrochronologies and radiocarbon dating to check against. We need to know that there are no 'ghost centuries' or 'alter egos' of key ring patterns lurking in the chains which have been ... ), and in Astronomy Now, April 1991, p. 14 (M. Beech). C. Leroy Ellenberger, St. Louis, USA. Further Thoughts on Dendrochronology Dear Sir, The controversy over the 'calibration' of radiocarbon dates by dendrochronology (tree-ring dating) looks set to run for some time to come (see recent articles and correspondence ... a good rule in science that it is wise to understand what you are looking at in its own terms before getting too carried away with analysing data drawn from it. If dendrochronological analysis indicates that trees recovered from a bog have ages spanning a period of (say) 3,000 years, then it would be as well to check that this result ...
Terms matched: 3  -  Score: 322  -  05 Mar 2003  -  27k  -  URL:
10. Society News [SIS C&C Workshop $]
... notes that traditional Chinese literary sources are confirmed by uncalibrated C14 dates which raises questions as to the world-wide validity of the Bristlecone Pine calibrations and the dubious nature of the European Oak dendrochronologies. \cdrom\pubs\journals\workshop\w1992no1\02news.htm ... with the Greek translators. Steven Robinson Ancient History Study Group Meeting, January 1992 Eight of us met at Clarice Morgan's on 11.1.92 and the main subject of discussion was radiocarbon and dendrochronology. Having offered to give a short introduction to the subject, which I did, I then went on to take up much of the remaining time with two further short papers ... are 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 (see ...
Terms matched: 3  -  Score: 318  -  05 Mar 2003  -  28k  -  URL:
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