The Relationship between Depositional Process and Strati- graphic Response: Development of Parasequences in Carbonate/Siliclastic Depositional Systems

沉积过程与地层响应之间的关系仍不清楚。因此，作为大多数沉积盆地的基本组成部分，地层准层序的起源仍然存在很大争议。我们将研究下寒武世至中寒武世卡拉拉组的准层序，这是一个更大规模的层序，横向范围从浅海碳酸盐到浅海(可能还有冲积)硅质碎屑沉积。我们将：1)识别和对比卡拉拉组及其等价物中的准层序；2)表征束缚准层序的表面，以获得有助于确定准层序启动和终止模式的信息(S)；3)绘制已建立的准层序内的特定相，以获得关于其厚度、几何形状和空间分布的信息；4)描述和解释准层序中的特定相，以提供有关沉积产生和扩散过程、水深、古气候和更多局部古地理的信息。如果在准层序中圈定相的多样性和几何形状，则可以更准确地确定它们的形成机制，并在可能的情况下对其进行量化。这些信息可以极大地改进古地理、水深、海平面历史、沉降史、古气候和局部或区域构造事件的模型。

The relationship between sedimentary process and stratigraphic response is still poorly understood. As a result, the origin of stratigraphic parasequences, the fundamental building block of most sedimentary basins, is still highly controversial. We will examine the parasequences of the lower to Middle Cambrian Carrara Formation, a larger-scale sequence which ranges laterally from shallow marine carbonate to shallow marine (and possibly alluvial) siliciclastic sediments. We will: 1) identify and correlate parasequences within the Carrara Formation and its equivalents; 2) Characterize surfaces that bound parasequences for information useful in determining the mode(s) of parasequence initiation and termination; 3) Map specific facies within established parasequences to obtain information on their thickness, geometry, and spatial distribution; 4) Describe and interpret specific facies within parasequences to provide information on the processes of sediment production and dispersal, water depths, paleoclimate, and more local paleogeography. If the diversity and geometry of facies within parasequences are delineated, then the mechanisms responsible for their formation can be more accurately determined and, where possible, quantified. This information could greatly refine models for paleogeography, water depths, sea-level history, subsidence history, paleoclimate, and local or regional tectonic events.