Three dimensional geological modeling and survey-grade geospatial documentation of GSSPs: Using the Silurian System as a case study for the Geologic Time Scale

在这里，我们提出了一种基于Web的、开放访问的数字资源，在这里介绍了数字综合地层学项目(DISP)。DISP背后的前提是消除与地层剖面中样品位置相关的地层模糊性。例如，通常很难将一位作者的测量剖面和数据与另一位作者在地理上相同的测量剖面和数据进行比较，因为作者之间在单位厚度、岩石和年代地层术语的分配以及/或测量剖面的精确线方面往往存在差异。DISPs将为这一问题提供解决办法，方法是使用激光雷达和叠加数字摄影制作露头的精确数字再现，以产生由全球导航卫星定位(GNSS)全球参考的给定露头的厘米到毫米尺度的精确数字版本。一旦可以在www.utdallas.edu/igeology网站上看到俄克拉何马州的一系列数字露头，研究人员就可以访问该项目和数字模型。我们还可以使用一种方法将它们的样本位置直接在线记录到数字露头上，用户可以通过处理2D图像来对露头模型进行属性，从而为未来的研究提供明确的地层参考。拟议的项目将作为DISP的概念验证，初步目标有限，即解决位于威尔士和英格兰境内的六个志留纪全球界线层型剖面和点。

Here, we propose a web-based, open-access, digital resource introduced here as the Digital Integrated Stratigraphy Project (DISP). The premise behind the DISP is to eliminate stratigraphic ambiguity associated with sample position within a stratigraphic section. For example, it is often difficult to compare one author’s measured section and data against another author’s geographically identical measured section and data as there are often discrepancies in the thicknesses of units, the assignments of litho- and chronostratigraphic terms, and/or the precise line of measured sections between authors. The DISP will provide a solution to this problem by producing a precise digital rendering of the outcrop using LIDAR and overlain digital photography to produce a cm to mm-scale accurate digital version of a given outcrop globally referenced by global navigation satellite positioning (GNSS). Once available online as shown at www.utdallas.edu/igeology , where a series of digital outcrops in Oklahoma are accessible, researchers could access the program and digital models. We also have the means to log their sample positions online directly onto the digital outcrop using a methodology where a user could attribute on an outcrop model by working on the 2D images thus allowing unambiguous stratigraphic reference for future research. The proposed project will serve as a proof-of-concept for the DISP with a limited initial goal of addressing the six Silurian Global Boundary Stratotype Sections and Points (GSSPs) located within Wales and England.