Basin Evolution and Biostratigraphy of the Lower and Middle Cambrian, Avalonian North America

P.I.s将调查新的证据，证明北美阿瓦洛尼亚下寒武纪和中寒武纪的碎屑沉积物并没有积聚在一个稳定的平台上。断块型阿瓦洛尼亚造山带的差异沉降可能影响了局部堆积速率、沉积完整性、上覆-下覆方向和群落分布。P.I.s将通过使用小贝壳化石和传统的三叶虫生物地层学，在纽芬兰东部的下寒武纪建立精确的区域内相关性。还将使用标记床。除了对纽芬兰东部从下寒武纪到中寒武纪的小型壳类化石生物地层学进行扩展和沉积构造综合外，本项目还将进一步记录早古生代后生动物生命的时间和多样化模式。

P.I.s will investigate new evidence that the clastic sediments of the Lower and Middle Cambrian of Avalonian North America did not accumulate on a stable platform. Differential subsidence across the block-faulted Avalonian orogen may have exerted an influence on local accumulation rates, sedimentary completeness, onlap- offlap direction and distribution of communities. P.I.s will establish precise intra-regional correlations in the Lower Cambrian of eastern Newfoundland through the use of small shelly fossils and traditional trilobite biostratigraphy. Marker beds will also be used. In addition to extending a small shelly fossil biostratigraphy and a synthesis of depositional tectonics from the Lower into the Moddle Cambrian of eastern Newfoundland, this project will further document the timing and pattern of diversification of metazoan life in the early Paleozoic.