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Search results for: stratigraph* in all categories
424 results found.
43 pages of results.
181. Did Cosmic Impact Hit Early Chinese? [SIS Internet Digest $]
... From: SIS Internet Digest 1998:1 (June 1998) Home¦ Issue Contents Did Cosmic Impact Hit Early Chinese? 30 January 1998 Fission track dating of ancient man site in Baise, China, and its significances in space research, paleomagnetism and stratigraphy. S.L. Guo*, W. Huang, X.H. Hao and B.L. Chen. Radiation Measurements, 1997, Vol.28, No.1-6 SISI, pp.565-570. *Institue of Atomic Energy, POB 275 96, Beijing 102413, Peoples Republic of China A large number of artifacts (stone tools) have been discovered in Baise (Bose), Guangxi, China in recent years. They show that ancient man were living in the south of China during very ancient times. During excavation, tektites were discovered in the same layer of deposits as the stone tools. The structure of the layers of deposits in this site was never disturbed, which is the evidence that the stone tools were left behind by the ancient man at the time when the tektites fell on the earth, which were slowly covered over ...
182. Briefings [SIS C&C Review $]
... causes. Briefly summarised, the Alvarez theory proposes that the demise of the dinosaurs, along with three-quarters of the plant and animal species living at the time, was brought about by the impact of an asteroid which struck the Earth 65 million years ago, raising a cloud of detritus which obscured the sun for some years, inhibiting photosynthesis and thus killing off plants at the beginning of numerous food chains (not least that on which the saurian herbivores depended). The theory has more than one strand of quantitative support (isotopic and stratigraphic), though it is not free of problems (chiefly geomagnetic). As it stands, it is designed to accommodate the available data, and thus it stands, in Maddox's estimation, as a theory which deserves testing. Despite the disparaging comments quoted above, we will let the parallels in Maddox's summing-up speak for themselves:- "Is it now established that the dinosaurs died out because an asteroid hit the Earth 65 million years ago? Not quite, I fear. What you have heard is the exposition of a ...
183. The Earliest Arrival of Celts in the British Isles [Kronos $]
... ), in the British Isles.(11) A second intra-Celtic split may have occurred between Gaulish (spoken from the Atlantic Ocean to the Black Sea) and Brythonic (ancestral to Cornish and Welsh), although evidence on this point is defective: we have no lengthy Gaulish texts, and the language ceased to be spoken in the 6th century A.D. The dating of these splits is highly problematic. Most differences of chronographic opinion are due to differences in dating method. Some prehistorians, like Jacquetta Hawkes, depend chiefly on stratigraphy.(12) Others, like Grahame Clark, prefer radiocarbon dating.(13) Still others, like Colin Renfrew, date events by dendrochronological re-calibration of radiometric results.(14) Other differences, however, are due less to technique than to basic assumption about the nature of diachronic change. Catastrophists, who assume radical discontinuity in protohistoric development, are inclined to prefer the "revised chronology" of Immanuel Velikovsky to all chronologies based on uniformitarian assumptions.(15) My own very tentative seriation for these linguistic separations ...
184. Abrupt Climate Change & the Rise and Fall of An Andean Civilisation [SIS Internet Digest $]
... Abbott, and J.H. Curtis. QUATERNARY RESEARCH, 1997, Vol.47, No.2, pp.235-248. *Harvard University, Graduate School of Design, 48 Quincy St, Cambridge, MA, 02138. Paleolimnological and archaeological records that span 3500 years from Lake Titicaca and the surrounding Bolivian-Peruvian altiplano demonstrate that the emergence of agriculture (ca. 1500 B.C.) and the collapse of the Tiwanaku civilization (ca. A.D. 1100) coincided with periods of abrupt, profound climate change. The timing and magnitude of climate changes are inferred from stratigraphic evidence of lake-level variation recorded in C-14-dated lake-sediment cores. (c) 1997 University of Washington. ...
185. Second SIS Cambridge Conference Report [SIS Internet Digest $]
... so on a regional or world-wide basis; and whether purely terrestrial or extraterrestrial processes were involved. Is the ultimate cause of the collapse of a civilization simple (as for the single impact hypothesis for the K/T extinction) or complex, involving diverse factors? For example, the combination of climate change, mass migration, war and economic collapse would undoubtedly be worse than one of those factors acting alone. As in the analogous mass-extinction of life debate, the SIS meeting demonstrated that such questions are in principle resolvable by detailed stratigraphical analyses and investigations in the field. Continuing the astronomical theme, Duncan Steel (Spaceguard Australia) gave an ingenious interpretation of the earliest phases of construction of Stonehenge, pointing out that according to the giant comet hypothesis, episodes of enhanced terrestrial bombardment are expected to occur when the orbit of the Encke comet dust trail intersects that of the Earth. This leads to the suggestion that pairs of bombardment events will occur a few centuries apart, themselves separated by 2500-3000 years, and that such an episode may have occurred c.3600 and 3200 ...
186. 2nd SIS Cambridge Conference Abstracts [SIS Internet Digest $]
... some attempt to define the nature of the 1628 BC and 1159 BC events; are they truly abrupt, as would be expected with volcanoes, or are they imposed on pre-existing downturns. Existing exidence suggests that the latter may be the case. If this is correct, it seems appropriate to ask what might have caused the downturns? This question leads logically to the speculation that loading of the atmosphere from space might be a significant factor in the environmental downturns. 16:00 Prof Benny J Peiser, Liverpool John Moores University Comparative Stratigraphy of Late Holocene Sediments& Destruction Layers Around the World: Geological, Climatological and Archaeological Evidence and Methodological Problems During the last two decades, researchers have found evidence for abrupt climate change and civilisation collapse as well as sudden sea level changes, catastrophic inundations, widespread seismic activity and abrupt changes in glacial features at around 2200 200 BC. Climatological proxy data together with sudden changes in lacustrine, fluvial and aeolian deposits are clearly detectable at the Atlantic-Subboreal boundary in the archaeological, geological and dendrochronological records from around the world. A survey ...
187. Editor's Notes [SIS C&C Review $]
... Civilisations: Archeological, Geological, Astronomical and Cultural perspectives'. Speakers are: Mark Bailey: cometary astronomy and ancient history Mike Baillie: climate changes during the Bronze Age and cultural implications Victor Clube: cometary astronomy and ancient history Gunnar Heinsohn: catastrophic emergence of civilisation Bruce Masse: Bronze Age flood catastrophe William Mullen: the Milesian school- the post catastrophic paradigm shift in ancient Greece Bill Napier: cometary disasters, cosmic dust and ecological disasters in historical times David Pankenier: natural catastrophes in Chinese mythology and tradition Benny Peiser: the stratigraphy of Bronze Age catastrophes Irving Wolfe: the 'Kultursturz' at the Bronze Age- Iron Age interface. Depending on accommodation required, the approximate cost per person is between £135 and £150 per person- contact SIS Secretary, 'Innisfree', Highsted Valley, Sittingbourne, Kent ME9 0AD, UK. The final deadline for bookings is 31st March 1997. Professorial Lecture In April 1996, Trevor Palmer gave his Professorial Lecture at Nottingham Trent University on 'The Fall and Rise of Catastrophism'. This outlined the remarkable revival in scientific ...
188. Rohl's Chronology - Implications for Mediterranean? [SIS Internet Digest $]
... many years now that Late Minoan IA continued into the period of the 18th Dynasty in Egypt. Santorini blew in the middle of LM IA. The 1628 BC "scientific" date would require moving the eruption into Middle Minoan IIIB, yet the town of Akrotiri, destroyed and sealed by the eruption, was clearly culturally LM IA- according to the pottery found at the site. Moreover, pumice from the eruption of Thera has recently (since the Thera Congress which approved the "scientific" date) been found in a clear stratigraphical context in the Eastern Egyptian Delta city of Avaris and at the Sinai site of Tell el-Hebua. The horizon of the pumice was unequivocally dated to the period from Ahmose I to Amenhotep II. Thus the "scientific" date is over 120 years earlier than the conventional date for the early 18th Dynasty in Egypt- when the archaeological evidence shows that the eruption took place. Duncemule, in his usual facile way demands that Egyptologists and Minoan archaeologists should move their chronologies back to fit in with the "scientific" date. This ...
189. Fossil Radioactive Bones [Catastrophism Geology $]
... 487-488. Bray C.J., 1974: Investigation of the radioactivity of a Mid-Devonian fossil fish and its subsequent age determination. Unpubl. thesis, Thames Polytechnic, School of Chemistry, London. Buisonjé P.H.de, 1972: Recurrent red tides, a possible origin of the Solnhofen limestone. I. Proc. Koninkl. Ned. Akad. Wetensch. B-75: 2. Diggle W.R., Saxon J., 1965: An unusually radioactive fish from Thurso, Scotland. Nature 208: 5008. Donovan e.a., 1974:A stratigraphical revision of the Old Red Sandstone of northeastern Caithness. Trans. Roy. Soc. Edimb. 69/8. Miller H., 1841: The Old Red Sandstone; or, new walks in an old field. Edinburgh. The Palaeontological Association International Symposium on the Devonian System (PADS 78), September 1978. Romer A.S., 1966: Vertebrate Paleontology. 3rd Ed., Chicago Univ. Press. Saxon J., 1979: lhe fossil fishes ot the North of Scotland. 3rd Ed., Caithness ...
190. In Passing [SIS C&C Review $]
... gigantic relative in China and both "vanished" 8 million years ago. Then there is a 4-million year fossil void during which there were major climatic changes, there was "an updoming of the earth's crust" in Africa, the Rift Valley formed, the major open-country animals appeared and, suddenly, there are hominids, already adapted to an upright posture which requires many anatomical changes. At Leakey's Lake Turkana site a sudden, drastic shrinking of the ancient lake, accompanied by a sudden change in climate, occurs at the same stratigraphical level as the apparent sudden arrival of a second type of stone tool culture, the penultimate Homo species as found in Java and China, and the presence of several giant herbivore species. The hominid record at Turkana and South Africa is bedevilled by the presence of two or three species at the same time and in nearby areas, difficult to correlate on slow evolutionary lines but not so difficult to explain in catastrophic terms. Misinterpretation of evidence is an ever present hazard. Neanderthal man was pictured for many years as a shambling, ...
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