Histórias da Geologia

Este blog pretende ser um espaço de reflexão sobre a evolução do conhecimento geológico ao longo dos tempos, principalmente a partir do século XVII, não esquecendo porém as pequenas histórias que fazem a grande história

segunda-feira, maio 08, 2006

Terramoto de 1538 (?)


De acordo com esta gravura portuguesa, em 1538, um tremor de terra substituiu um lago (Lacus Lucrimus) por uma montanha com 350 metros de altura, no vértice da qual se abriu uma cratera.
Esta data não corresponde com as que encontramos em alguns trabalhos que referem, no século XVI, o registo de terramotos, em Portugal, apenas em 1504, 1531, 1575, 1587, 1597 ou 1598. De qualquer forma a imagem é bastante interessante e reveladora das concepções que à época vigoravam sobre as causas dos terramotos: exalações subterrâneas que ao ficarem aprisionados em canais e cavernas provocariam o 'estremecimento' dos solos.

A ilustração pode ser visualizada no site da Biblioteca Nacional.

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