Potential GSSP of the Global Kungurian Stage: Trapper Creek, Cassia Mountains, southern Idaho and Rockland, Pequop Mountains, northern Nevada.

全球昆古里亚阶段的潜在GSSP：陷阱溪，卡西亚山脉，爱达荷州南部和罗克兰，内华达州北部的Pequop山脉。博伊西州立大学的弗拉基米尔·达维多夫和马克·D·施密茨EAR-1004079摘要国际地层学委员会完成全球时间尺度是至关重要和紧迫的。在所有阶段都有定义之前，时间刻度不能与辐射年龄日期充分校准。如果没有可靠和校准的时间尺度，研究一系列涉及深部地质记录的古气候和古生物等问题的努力将受到限制。国际地层学委员会将2012年定为确定所有阶段的最后期限--完成这项工作的时间已经不多了。所申请的资金将用于支持对两个区段(爱达荷州南部卡西亚山脉的Trapper Creek和内华达州北部的Rockland，Pequop Mountain)的实地和实验室研究，这两个区段最近被提议为最有希望建立GSSP的区段，以确定全球年代地层尺度上的昆古里亚阶段的基础。Trapper Creek和Rockland是目前已知的唯一容易到达的乌拉良、北美和特提斯牙形刺动物群共生的区段，因此提供了全球对比，也是唯一获得大量同位素结果的区段。已经测量了罗克兰段，但PI将以厘米尺度重新测量两个段的过渡层。其他的同位素研究将在博伊西州立大学的地质年代学和地球化学实验室进行。世界牙形刺和丝虫专家团队致力于作为优先事项完成这一项目。

Potential GSSP of the Global Kungurian Stage: Trapper Creek, Cassia Mountains, southern Idaho and Rockland, Pequop Mountains, northern Nevada.Vladimir Davydov and Mark D. Schmitz, Boise State UniversityEAR-1004079 ABSTRACTThe completion of the global time scale by the International Commission on Stratigraphy (ICS) is of paramount and pressing importance. Until there are definitions for all stages, the time scale cannot be adequately calibrated with radiometric age dates. Without a reliable and calibrated time scale, efforts to study a host of paleoclimate and paleobiologic and other issues that involve the deep-time geologic record will be limited. The International Commission of Stratigraphy has set 2012 as the deadline for all stages to be defined - and time is running short to get the job done. The requested funds will support a field and lab study of two sections, (Trapper Creek, Cassia Mountains, southern Idaho, and Rockland, Pequop Mountains, northern Nevada), which were proposed recently as the most promising sections to establish a GSSP to define the base of the Kungurian Stage in the Global Chronostratigraphic Scale. Trapper Creek and Rockland are the only easily accessible sections known at the moment where Uralian, N. American and Tethyan conodont faunas co-occur and thus provide global correlation and the only sections where considerable isotopic results are already available. Rockland section is already measured, but PIs will re-measure the transitional beds in both sections at centimeter scale. Additional isotope studies will be performed at geochronology and geochemistry labs in Boise State University. The team of world conodont and fusulinid experts is committed to complete this project as a high priority.