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Search results for: dendrochronolog in all categories
117 results found.
12 pages of results. 101. Still Facing Many Problems [Journals] [Kronos]
... .), The New Solar Physics. AAAS Selected Symposium 17 (Boulder, CO: 1978), pp. 11-33] . The climatic and related evidence cited by Velikovsky is consistent with variations in solar activity. A. E. Douglass, an astronomer at the turn of the century, founded the study of tree rings, or dendrochronology, in his quest to discover clues to the history of the Sun in trees. Using Giant Redwoods (Sequoia) of California, Douglass developed a continuous sequence of rings going back to the end of the 14th century B.C . Thus, while not long enough to embrace the Earth-Venus events, it covers the Earth-Mars period. ...
102. Letters [Journals] [Pensee]
... , of the University of Kentucky and former editor of Bat Research News, there have been core samplings and analyses of guano deposits. Unfortunately, since bat guano is quarried like a mineral resource, it may be too late in some areas to exploit the radiocarbon age-dating technique by core samplings of these cave deposits. As a supplemental method to dendrochronology, it (cacochronology?) would in effect aid in the characterization of seasonal variations. In brief, a program of core samplings on guano deposits, of sufficient depth and including fossilized eolites, should be comparable to that involving tree-rings. Stratification of the deposits, it is conjectured, should show climatic changes in temperature and humidity, ...
103. Society News [Journals] [SIS Review]
... that wealthy Egyptians would live in luxury for much longer than the peasants, Rohl said that only reasonably well-to-do people got buried in cemeteries. Most deaths occurred around 31/32, tending to support using a lower average age per generation. Porter also took this opportunity to update the audience briefly on his work on scientific dating methods. Regarding dendrochronology, he said that despite all the claims being made about it, no recent continuous long tree ring chronology has yet been published. The only one published has a 70 year mistake in it. Regarding ice cores, an ash layer was found in one which dated to 1620BC but an analysis of the material proved that it did not ...
104. Society News [Journals] [SIS Workshop]
... Age sites were destroyed. Milton said that Velikovsky came across the work of Donnelly after he had done his own and so acknowledged him by putting him down. The next meeting was arranged for 12th March. Ancient History Study Group March 1994 10 people met at David Roth's house on 12th March 1994. Bob Porter started with a chat about dendrochronology in Anatolia, with reference to a Hittite site next to the Euphrates, Tel Huyuk. Before building a dam led to the site being drowned, it was studied by Somers of the British Institute of Archaeology at Ankara. The timber used to build a gate was oak and had a 200 year sequence, which was matched to an ...
105. The Causal Source for the Climatic Changes at 2300 BC [Journals] [SIS Review]
... However, there is the question of whether an eruption was the cause of the Arctic triggering, or if the eruption or eruptions were caused by crustal stress arising from the glacial buildup following the Arctic triggering by something else. A recent paper by Baillie and Munro [54] appears to support a possible major event about 2340BC, based on dendrochronological (tree-ring) measurements. They attempted to obtain a precise dating of volcanic events by their effect on climate, which affects tree growth (i .e . narrowness of tree rings). They found that a number of major volcanic events coincided with established dates from other sources. An intriguing by-product of their investigations was the identification of ...
106. Radiocarbon Dating and Egyptian Chronology [Journals] [SIS Review]
... dead. The rings in the wood from that older tree can in turn be matched with those from even older ones, thus establishing a sequence which can be extended as far back as wood is available from earlier periods (Fig a). The resulting dates are expressed in solar or calendar years, and the dating method is known as dendrochronology. Until 1955, no trees very much older than 2000 years were known. However, Edmund Schulman of the University of Arizona then recognised that the long-lived Pinus aristata or Californian bristlecone pine could be used to extend the tree-ring sequence even further. The estimated age of the oldest living bristlecone pine is 4,900 years, while the ...
107. Monitor [Journals] [SIS Workshop]
... . Advocates of southern origins are hoping to get back to Iraq and find evidence of even earlier stages at Uruk, but meanwhile perhaps they should read the work of John Dayton. Mycenaean Problems (Current World Archaeology, No. 6, Jul/Aug 2004, p. 10 and pp. 22-31; Fortean Times, October 2004) Dendrochronology and calibrated carbon dating, performed on burned timbers from Assiros Toumba in central Macedonia, have pushed the date of the end of the Mycenaean Palatial period back more than 50 years to before 1270 BC. This is the first absolute date independent of Egyptian chronology and won't be pleasing to some chronologists, although it matches the date given by ...
108. Geomagnetic Effects of an Earthwide Event in 2300BC [Journals] [SIS Review]
... correlation has been established between past radiocarbon level and geomagnetic field strength [39]. Because of the above relationship, I looked for a negative transient in the atmospheric radiocarbon level around 2300 BC to obtain support for a positive geomagnetic transient occurring at that time. This transient would be detected by measurements of the radiocarbon levels in tree rings. Dendrochronological measurements are used to correct basic radiocarbon measurements but they can also be used to show short term atmospheric radiocarbon variations in the past. Very satisfyingly, there is a noticeable negative transient in radiocarbon level beginning right around 2300 BC, summarised by Johnston and supported by Seuss, as shown in Figure 12 [40]. Derricourt [41 ...
109. News from the Internet [Journals] [SIS Workshop]
... on the great cultures of the ancient Mediterranean and Near East including Egypt and Nubia; Canaan, Philistia and Israel; Phoenicia and Syria; Assyria, Babylonia, Elam and Persia; Anatolia; Cyprus, Crete and Greece; and Italy, Sicily and Sardinia. Fields of study have included Egyptology; archaeology; astronomical retrocalculation; textual analysis; dendrochronology; carbon dating; pottery; jewellery, goldwork and metalworking technology. The Journal of the Ancient Chronology Forum (JACF) is the journal of the Institute, an academic publication dedicated to the study of old world chronology: a high quality, award-winning journal, heavily illustrated with diagrams, charts and photographs to enhance the arguments put forward ...
110. Untitled [Journals]
... the Dynasties of Manetho [Review V1997n1] Lasken, Jesse E.: Egyptian Chronology - the Multiple Name Factor [Workshop W1995no2] Lasken, Jesse E.: Egyptian Language Anomalies [Workshop W1994no2] Lasken, Jesse E.: Misusing Radiocarbon: A Case Study [Review V1992] Lasken, Jesse E.: Should the European Oak Dendrochronologies Be Re-examined? [Review V1991] Lasken, Jesse E.: Site Stratification: is it A Sound Methodology? [Workshop W1991no1] Lawrence, Terry: Shiloh [Workshop Vol0603] Leflem, K. A.: Amenophis, Osarsiph and Arzu. More on the Third Intermediate Period of Egypt [Workshop Vol0501] Leflem, K ...
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