Possible Markers of the Jurassic/Cretaceous Boundary in the Mediterranean Tethys: A Review and State of ce prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />ce w:st="on">Art ce>
详细信息
- 责任者：Jozef Michalik (Slovkin Academy of Sciences ; Geological Institute ; Dubravska cesta 9 ; P.O. Box 106 ; 840 05 Bratislava ; Slovak Republic) ; Daniela Rehakova
- 刊名：Geoscience Frontiers
- 出版年：2011
- 卷期：2(4)
- 页码：p.475-490
- 图表：11 illus., 1 table, 77 refs.
- issnNo：ISSN1674-9871
- isbnNo：CN11-5920/P
摘要
ChDivSummary name="EnDivSummary">During the last decades,several integrated studies of Tethyan Jurassic/Cretaceous boundary sections from different countries were published with the objective to indicate problems for the selection of biological,chemical or physical markers suitable for identification of the Jurassic/Cretaceous boundary-the only system boundary within the Phanerozoic still not fixed by GSSP.Drawing the boundary between the Jurassic and Cretaceous systems is a matter of global scale discussions.The problem of proposing possible J/K boundary stratotypes results from lack of a global index fossils, global sea level drop,paleogeographic changes causing development of isolated facies areas,as well as from the effect of Late Cimmerian Orogeny.This contribution summarizes and comments data on J/K boundary interval obtained from several important Tethyan sections and shows still existing problems and discrepancies in its determination.