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Tollmann's Hypothetical Bolide
Tollmann's bolide hypothesis is a hypothesis presented by Austrian palaeontologist Edith Kristan-Tollmann and geologist Alexander Tollmann in 1994. The hypothesis postulates that one or several bolides (asteroids or comets) struck the Earth around 7640 ± 200 years BCe, with a much smaller one approximately 3150 ± 200 BCE. The hypothesis tries to explain early Holocene extinctions and possibly legends of the Universal Deluge. The claimed evidence for the event includes stratigraphic studies of tektites,Glass, B.P., 1978, ''Australasian Microtektites and the Stratigraphic Age of the Australites'' Bulletin of the Geological Society of America. v. 89, no. 10, pp. 1455–1458.Izokh, E.P., 1988, ''Age-paradox and the Origin of Tektites'' in J. Konta, ed., 2nd international conference on natural glasses'' Abstracts – International Conference on Natural Glasses-Prague, Czechoslovakia, 1988. v. 2, pp. 379–384.Prasad, N.S. and P.S. Rao, 1990, ''Tektites Far and Wide''. Nature. v. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palaeontologist
Paleontology (), also spelled palaeontology or palæontology, is the scientific study of life that existed prior to, and sometimes including, the start of the Holocene epoch (roughly 11,700 years before present). It includes the study of fossils to classify organisms and study their interactions with each other and their environments (their paleoecology). Paleontological observations have been documented as far back as the 5th century BC. The science became established in the 18th century as a result of Georges Cuvier's work on comparative anatomy, and developed rapidly in the 19th century. The term itself originates from Greek (, "old, ancient"), (, (gen. ), "being, creature"), and (, "speech, thought, study"). Paleontology lies on the border between biology and geology, but differs from archaeology in that it excludes the study of anatomically modern humans. It now uses techniques drawn from a wide range of sciences, including biochemistry, mathematics, and engineering. U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
