The IUGS boundary in the middle of the
The IUGS boundary in the middle of the
复制标题
DOI：
10.18814/epiiugs/1999/v22i4/003
复制
发表时间：
1999-12
期刊：
影响因子：
--
通讯作者：
H. Lane;P. Brenckle;J. F. Baesemann;B. Richards
中科院分区：
文献类型：
--
作者：
H. Lane;P. Brenckle;J. F. Baesemann;B. Richards
阿罗峡谷位于内华达州的拉斯维加斯附近，位于美国西南部干旱的盆岭省，被石炭纪地层小组委员会选为中石炭纪边界的全球边界层型剖面和点。GSSP已于1996年1月得到国际地层学委员会的批准和IUGS执行委员会的批准。GSSP正好与历史上稳定的密西西比-宾夕法尼亚边界相吻合。石炭纪期间，阿罗峡谷剖面位于从南加州向北延伸至阿拉斯加的亚热带至热带海道上。沉积物是沿着陆架边缘，将深水、西部盆地相与克拉通东部的近岸大陆层分隔开来。边界层段和相邻地层在箭头峡谷完全暴露。它们可以横向追踪数公里，基本上结构上未受干扰。在美国政府土地上进行研究和取样不受限制。GSSP位于顶部上方82.90 m处，
Arrow Canyon, chosen by the Subcommission on Carboniferous Stratigraphy to be the Global Boundary Stratotype Section and Point (GSSP) for the Mid-Carboniferous Boundary, is located near Las Vegas, Nevada, in the arid Basin and Range Province of the southwestern United States. The GSSP has been approved by the International Commission on Stratigraphy and ratified by the IUGS Executive Committee in January 1996. The GSSP coincides exactly with the historically stable Mississippian-Pennsylvanian boundary. During the Carboniferous, the Arrow Canyon Section was situated in a subtropical to tropical seaway extending from southern California northward into Alaska. Deposition was along a shelf-edge separating deeper water, western basinal facies from nearshorecontinental beds eastward on the craton. The boundary interval and contiguous strata are completely exposed at Arrow Canyon. They can be traced laterally for many kilometers and are essentially undisturbed structurally. Access for study and sampling is unrestricted on United States government land. The GSSP is located at 82.90 m above the top of