Finding a reasonable candidate for an impact crater marked a turning point in the search for the causes of extreme climate perturbations and mass extinctions—away from earthly sources such as volcanism and toward a singular, catastrophic event.
Finding a reasonable candidate for an impact crater marked a turning point in the search for the causes of extreme climate perturbations and mass extinctions—away from earthly sources such as volcanism and toward a singular, catastrophic event.
针对地球上气候大变动、生物大灭绝的研究，从此发生了重大转折，因为学者找到了一个合理的陨石撞击点，就不再只是著眼于地球内部的肇因，例如火山活动，他们开始认为整个事件源自非比寻常的大灾变。