Mastodonte bogota3/17/2023 We suggest that the sedimentary unit is associated with intense soil erosion processes triggered by early Neolithic deforestation. Radiometric dating indicates a middle Holocene human occupation, between ca. The lower unit contains a hearth, scattered burnt bones, flint flakes and ceramic artefacts. The Chaco has been intensively settled for agricultural and pastoral purposes since the 18th century. ![]() These findings are evidence of a recent phase of alluvial fan sedimentation resulting from slope erosion activated by forest clearing. Roots localised in this layer also sustain a number of very large still living trees. The remains of a wooden plank, dated 140 yr BP, were found at the top of this soil, which laterally contains charcoals, ash layers and large charred trunks, sometimes in growth positions. ![]() The intermediate unit consists of forest soil that seals deep channels containing bones together with a forest association. The lower and upper parts are formed from predominantly sandy sediments that demonstrate rapid growth of the alluvial fan, associated with an intense erosion of barren slopes. Three major lithostratigraphic units characterise the sedimentary sequence in this region. A stone statue of the early San Agustín Culture (perhaps of the ninth century before Christ), shows a face or mask that seems to represent an elephant this may mean that they had knowledge of the existence of Mastodons still in that time, or of an ancestral memory (cultural/ tradition) of an earlier period.Ī b s t r a c t Quebrada (stream) Ñuagapua, which is located in the Bolivian Chaco in the Andean foothill generates an alluvial fan many kilometres in length. ![]() Abstract An analysis of the stratigraphy and radiocarbon dating of an excavation in the El Totumo site (Tocaima, Cundinamarca, Colombia), where bones of Mastodon and Megatherium were found associated with stone artifacts of the El Abra type, brings to the conclusion that man and megafauna still cohabited in the area between 60 years before present. Una estatua de la época temprana de la Cultura de San Agustín (quizás del siglo noveno antes de Cristo) muestra una cara o máscara elefantoide que puede significar que tenían conocimiento de la existencia de mastodontes todavía en esta época o un recuerdo ancestral (tradición cultural) de épocas anteriores. Un análisis de la estratigrafía y dataciones de carbono 14 de una excavación en el sitio El Totumo (Tocaima, Cundinamarca, Colombia) donde se encontraron huesos de Mastodontes y Megaterios en asociación con artefactos líticos de tipo Abriense, conduce a la conclusión de que l hombre y la megafauna convivieron aún entre 6000 y 5000 antes del presente. van der Hammen: Supervivencia de mastodontes, megaterios y presencia del hombre en el Valle del Magdalena (Colombia) entre 6000 y 5000 AP.
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