Shoo Fly Complex: Continuing Research on the Most Extensive Belt of Lower Paleozoic Rocks in California

位于加州内华达州北方谢拉的Shoo Fly综合体 从结构上最低层到结构上 最高峰，（1）Lang-Halsted序列，（2）邓肯峰 硅质岩，（3）卡伯特森湖外来岩和（4）塞拉城 美琅脂 北东向的逆冲断层将每个构造 切片和地层模式在卡伯特森湖 外来体表明至少部分的Shoo Fly复合体 形成了一个古生代的叠瓦状构造 增生杂岩 如果这个假设是正确的， 扩大到包括其他单位在Shoo Fly复杂，然后 每个有故障边界的切片包含关于 加积复合体演化。 我们将开展为期两年的 计划调查的年龄（S）的燧石单位在整个 Shoo Fly复合体，以及地层，岩石， 沉积学和构造特征， 霍尔斯特德序列 此处提出的工作产生的数据将 允许对一个完整的交叉进行全面的分析， Shoo Fly Complex的一部分，并将添加 这对我们了解地球上最大的 位于加州的下古生代岩石。 结果可能会有一个 对北美原住民分布的重大影响 地壳和外来或可疑的地壳元素。

The Shoo Fly Complex, northern Sierra Nevada, California has been subdivided into, from structurally lowest to structurally highest, (1) the Lang-Halsted sequence, (2) the Duncan Peak chert, (3) the Culbertson Lake allochthon and (4) the Sierra City melange. Northeast-dipping thrust faults bound each structural slice, and stratigraphic patterns in the Culbertson Lake allochthon suggest that at least parts of the Shoo Fly Complex form an imbricate structure that formed in a Paleozoic accretionary complex. If this hypothesis is correct and can be expanded to include other units in the Shoo Fly Complex, then each fault-bounded slice contains information about how the accretionary complex evolved. We will undertake a two-year program to investigate the age(s) of chert units throughout the Shoo Fly Complex, and the stratigraphic, petrologic, sedimentologic, and structural characteristics of the Lang- Halsted sequence. Data generated by work proposed here will allow for a comprehensive terrane analysis of a complete cross- sectional portion of the Shoo Fly Complex, and will add significantly to our understanding of the most extensive belt of lower Paleozoic rocks in California. The results could have a major impact on the distribution of aboriginal North American crust and exotic or suspect crustal elements.