• 责任者：Liu Gengwu (Nanjing Institute of Geology and Palaeontology ; Chinese Academy of Sciences ; Nanjing 210008 ; China) ; Dennis R.B.
• 刊名：Journal of Stratigraphy
• 出版年：2009
• 卷期：33(1)
• 关键词：白垩纪 ; Cretaceous ; 古近纪 ; Paleogene Period ; 地层界线 ; stratigraphic boundary ; 中国 ; China
• 页码：p.18-34
• 图表：1 illus., 2 tables, 145 refs.
• 分类号：1200
• issnNo：ISSN0253-4959
• isbnNo：CN32-1187/P

The Cretaceous-Paleogene boundary in terrestrial settings is best known and documented for the interior part of oft-com:office:smarttags" />North America where nearly 100 sites have been studied to date. The vast majority of these sites occur in a humid facies setting that apparently favours the preservation of the boundary claystone. Palynological studies are extensive from areas of New Mexico northwards into Alaska. The best-preserved sections have a boundary claystone along with one or more geochemical and biostratigraphic anomalies. Many similarities appear to exist between the North American sites and terrestrial sites described from New Zealand and Japan, suggesting that the boundary events were global in extent in relation to the palynological characters. The area with good potential for direct comparisons to the North American assemblages lies in Heilongjiang, Northern Jiangsu and the neighbouring areas where the assemblages appear similar to those seen in North America.oft-com:office:office" />