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

全球昆古阶阶段的潜在 GSSP：Trapper Creek、Cassia Mountains、爱达荷州南部和 Rockland、Pequop Mountains、内华达州北部。

• 批准号: 1004079
• 负责人: Vladimir Davydov
• 金额: $ 2.77万
• 依托单位: Boise State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-08-15 至 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1004079&HistoricalAwards=false
• 关键词: Potential; GSSP; Global; Kungurian; Stage

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.

全球昆古阶的潜在GSSP：爱达荷州南部和罗克兰、卡西亚山脉、佩科普山脉、内华达州北方的特拉普河。博伊西州立大学地球物理系教授-1004079摘要国际地层学委员会（ICS）完成全球时间刻度具有极其重要和紧迫的意义。在所有阶段都有定义之前，时间尺度无法用放射性年龄数据进行充分校准。 如果没有一个可靠的、经过校准的时间尺度，研究大量古气候、古生物和其他涉及深时地质记录的问题的努力将受到限制。国际地层委员会已经将2012年定为所有阶段的最后期限--完成这项工作的时间已经不多了。 申请的资金将用于支持对两个剖面（爱达荷州南部Cassia山脉的Trapper Creek和内华达州北方Pequop山脉的罗克兰）进行实地和实验室研究，这两个剖面最近被提议为最有希望建立GSSP的剖面，以确定全球年代地层尺度中Kungurian阶的基础。特拉普溪和罗克兰是目前已知的唯一容易到达的地区。美洲和特提斯牙形石动物群共同出现，从而提供了全球的相关性和相当多的同位素结果已经可用的唯一部分。 已经测量了罗克兰段，但PI将以厘米级重新测量两个段的过渡层。其他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。 世界牙形石和梭形虫专家团队致力于将此项目作为高度优先事项完成。