Possible markers of the Jurassic/Cretaceous boundary in the Mediterranean Tethys:A review and state of art  

作　　者：Jozef Michalik Daniela Rehkov 

机构地区：[1]Slovakian Academy of Sciences,Geological Institute,Dubravska cesta 9,P.O.Box 106,840 05 Bratislava,Slovak Republic [2]Comenius University,Faculty of Natural Sciences,Department of Geology and Palaeontology,Mlynska dolina G-1,842 15 Bratislava,Slovak Republic

出　　处：《Geoscience Frontiers》2011年第4期475-490,共16页地学前缘（英文版）

基　　金：the APVV-0280-07,APVV-0248-07;APVV- 0465-06;APVT 51-011305;VEGA 0196 and 0065

摘　　要：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.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.

关 键 词：J/K boundary Interregional correlation Biostratigraphic proxies Calpionellids NANNOFOSSILS 

分 类 号：Q911[天文地球—古生物学与地层学]