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与人类息息相关的“第四纪”秦晋，徐兰伏我们生活的地球，其形成、演化至今大约有４６亿年的历史。地质学家把几十亿年的地球历史划分为若干个“纪”。第四纪是地球发展演变历史和人类发展历史的最新阶段。为什么把最短的，只有２００多万年的第四纪单独划分成一个“纪”...
“Quaternary” closely related to mankind Qin Jin and Xu Lanfu The earth we live in has a history of 4.6 billion years since its formation and evolution. Geologists divide billions of years of Earth’s history into several “records.” Quaternary is the latest phase in the history of the evolution of the Earth and the history of human development. Why the shortest, only more than 200 million years of Quaternary separate into a “discipline” ...