It is generally recognized that the gross changes of Pleistocene climate were globally synchronous. Obviously, a complete system must be used as a standard. The record obtained from the sea bottom, where deposition is...It is generally recognized that the gross changes of Pleistocene climate were globally synchronous. Obviously, a complete system must be used as a standard. The record obtained from the sea bottom, where deposition is practically uninterrupted, is the one which best fits this criteria. Kukal (1977) suggested that the isotopic record of deep-sea cores, unique in its continuity and global extent, provides the most展开更多
文摘It is generally recognized that the gross changes of Pleistocene climate were globally synchronous. Obviously, a complete system must be used as a standard. The record obtained from the sea bottom, where deposition is practically uninterrupted, is the one which best fits this criteria. Kukal (1977) suggested that the isotopic record of deep-sea cores, unique in its continuity and global extent, provides the most