Seelyville Coal Member Elevation 2012

In the past a series of reports on coal resources of selected counties in Indiana was published as part of the Special Report series of the Indiana Geological Survey (IGS). These reports included maps showing elevation of the Seelyville Coal Member (Linton Formation, Pennsylvanian). The elevation maps were based on coal-test records, mine-map notations, and interpretations of geophysical logs that are included in the files of the Indiana Geological Survey. Different elevation ranges were utilized in the various counties and for different purposes. Since 1980, staff members of the Indiana Geological Survey have also collected and entered coal resource information into the NCRDS Database as a cooperative project with the U.S. Geological Survey (USGS). The purpose of NCRDS Database is to provide a means of rapid retrieval of point-source coal resource information, including coal location, elevation, depth, and other parameters. Based on all available data as of October 2010, a new map of Seelyville Coal Member elevation was created. It is the most current elevation map of the Seelyville Coal Member. Because additional data on coal elevations are obtained by the Indiana Geological Survey on an annual basis, interested users may wish to contact the IGS for information on these more up-to-date sources.此前，印第安纳州地质调查局（Indiana Geological Survey, IGS）以其专题报告系列（Special Report series）为出版载体，刊发了一系列针对印第安纳州部分选定县域煤炭资源的研究报告。此类报告包含锡利维尔煤段（Seelyville Coal Member）的高程分布图，该煤段隶属于宾夕法尼亚系（Pennsylvanian）林顿组（Linton Formation）。上述高程图的编制依据包括印第安纳州地质调查局档案中收录的煤炭勘探记录、矿山图注记以及地球物理测井解释成果。不同县域及不同应用场景下，所采用的高程区间存在差异。自1980年起，印第安纳州地质调查局的工作人员作为与美国地质调查局（U.S. Geological Survey, USGS）的合作项目参与方，将收集到的煤炭资源信息录入NCRDS数据库（NCRDS Database）。该数据库的建设目标是实现点源煤炭资源信息的快速检索，涵盖煤炭点位、高程、埋深及其他相关参数。基于2010年10月前的全部可用数据，研究团队编制了全新的锡利维尔煤段高程分布图，这也是目前最新的锡利维尔煤段高程图。鉴于印第安纳州地质调查局每年都会获取新的煤炭高程数据，有需求的用户可联系IGS获取这些最新数据源的相关信息。