A new rock-based definition for the Cryogenian Period (circa 720-635 Ma)

• 来源期刊: 幕-国际地学杂志（英文版）
• 年，卷（期）: 2016,（1）
• 页码范围: 3-8
• 页数: 6页
• 语种: 英文
• DOI: 10.18814/epiiugs/2016/v39i1/89231

摘要

Evolution of the Cryogenian Period concept The notion of a widespread glaciation during the late Precambrian was already well advanced (e.g. Kulling, 1934; Lee, 1936; Mawson,1949) by the time Brian Harland (Harland, 1964a,b) suggested using glacial deposits to define a new addition to the international geological timescale.