Tollmann's bolide hypothesis
http://dbpedia.org/resource/Tollmann's_bolide_hypothesis
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.
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A teoria do bólido de Alexander Tollmann, proposta por Kristen-Tollmann e Tollmann, é uma hipótese apresentada pelo geólogo austríaco Dr. Alexander Tollmann, sugerindo que um ou vários bólidos (asteroides ou cometas) tenham impactado contra a Terra em 7640 AEC (±200), tendo outro bólido menor impactado em 3150 AEC (±200). Se comprovada, esta hipótese explicaria as extinções do Holoceno e, possivelmente, as lendas sobre um dilúvio universal.
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Bólido hipotético de Tollmann
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Tollmann's bolide hypothesis
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November 2014
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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, dendrochronology, and ice cores (from Camp Century, Greenland) containing hydrochloric acid and sulfuric acid (indicating an energetic ocean strike) as well as nitric acids (caused by extreme heating of air). Christopher Knight and Robert Lomas in their book, Uriel's Machine, argue that the 7640 BCE evidence is consistent with the dates of formation of a number of extant salt flats and lakes in dry areas of North America and Asia. They argue that these lakes are the remains of multiple-kilometer-high waves that penetrated deeply into continents as the result of oceanic strikes that they proposed occurred. Research by Quaternary geologists, palynologists, and others has been unable to confirm the validity of the hypothesis and proposes more frequently occurring geological processes for some of the data used for the hypothesis. The dating of ice cores and Australasian tektites has shown long time span differences between the proposed impact times and the impact ejecta products.
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A teoria do bólido de Alexander Tollmann, proposta por Kristen-Tollmann e Tollmann, é uma hipótese apresentada pelo geólogo austríaco Dr. Alexander Tollmann, sugerindo que um ou vários bólidos (asteroides ou cometas) tenham impactado contra a Terra em 7640 AEC (±200), tendo outro bólido menor impactado em 3150 AEC (±200). Se comprovada, esta hipótese explicaria as extinções do Holoceno e, possivelmente, as lendas sobre um dilúvio universal. As supostas evidências para o evento incluem estudos estratigráficos de tectitos, dendrocronologia, e núcleos de gelo extraídos de Camp Century, Groenlândia, contendo ácido hidroclórico e sulfúrico (indicando um impacto de alta intensidade no oceano) bem como ácido nítrico (criado pelo aquecimento extremo do ar). A evidência para 7640 AEC parece ser consistente com as datas de formação de vários lagos salgados ainda existentes em regiões áridas da América do Norte e Ásia, sugerindo que o impacto pode ter ocorrido nos oceanos, causando múltiplos tsunamis com ondas quilométricas, que adentraram profundamente nos continentes, e/ou lançaram grandes massas de água salgada nas camadas superiores da atmosfera, de onde caíram como chuva, criando lagos salgados em desertos.
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