COLLABORATIVE RESEARCH: High-Resolution Event Stratigraphy of the Kope-Corryville Interval in the Type Cincinnatian

目前的命名框架的类型benchinnatian 表明了潜在的岩石地层复杂性， 利用其丰富的化石生物群进行古生态和 宏观进化研究 然而，最近的几项研究 这表明这种明显复杂性部分是人为的， 命名本身的困难。 的目的 研究是开发一个高分辨率的年代地层学 Kope通过Corryville地层（Edenian- Maysvillian）在辛辛那提地区， 通过使用事件视界进行相关命名， 包括：海侵面，外包，地震破坏 具有不寻常沉积特征的风暴床和海 在岩性和动物群中与水平相关的地层“尖峰” 特色 一系列的实地地点和核心， 整个地区将被测量和详细描述， 收集和分析动物样本，以划定事件层位 在研究间隔内。 此前的调查显示， 几个这样的地平线的存在，预计我们的 专门为此目的设计的工作将允许 认识更多的几个。 结果将是一系列的交叉- 剖面图和地图，说明了 序列 作为第一次使用这个框架，我们将进行 对记录的事件层位进行一系列梯度分析， 校正古环境的横向变化程度 和古群落在特定的时间在伊甸园和 梅斯维尔阶

The current nomenclatural framework for the type Cincinnatian suggests an underlying lithostratigraphic complexity that inhibits utilization of its rich fossil biota for paleoecological and macroevolutionary investigations. However, several recent studies indicate that this apparent complexity is partly an artifact of difficulties with the nomenclature itself. The purpose of the research is to develop a high-resolution chronostratigraphic framework for the Kope through Corryville Formations (Edenian- Maysvillian) in the Cincinnati region that transcends stratigraphic nomenclature through the use of event horizons for correlation, including: transgressive surfaces, epiboles, earthquake-disrupted beds, storm beds with unusual sedimentological features, and sea level-associated stratigraphic "spikes" in lithologic and faunal characteristics. A series of field localities and cores from throughout the region will be measured and described in detail, and faunal samples collected and analyzed, to delineate event horizons within the study interval. Previous investigations indicate the presence of several such horizons, and it is anticipated that our work designed specifically for this purpose, will permit the recognition of several more. The result will be a series of cross- sections and maps illustrating a chronostratigraphic framework for the sequence. As a first use of this framework, we will conduct a series of gradient analyses on documented event horizons to calibrate the degree of lateral variability in paleoenvironments and paleocommunities at specific times during the Edenian and Maysvillian stages.