随着现代地层学、古生物学的不断深入发展，中国震旦系的时限、范围及划分等问题备受广大地质工作者关注。它涉及到中国晚前寒武纪的详细划分、震旦纪的建立和完善及其时、空位置的确定、地质发展经历以及国际（洲际）对比等诸多重大基础地质问题。国内自７０年代初的“震... With the development of modern stratigraphy and paleontology, the geological period has attracted much attention from geologists such as the time limit, scope and classification of Sinian in China. It involves the detailed division of the Early Precambrian in China, the establishment and improvement of the Sinian and its geological, spatial and temporal identification, geological development experience, and international (intercontinental) contrast and many other major geological issues. Domestic since the early 70’s "shock ...