Mount Isa Inlier 1:100 000 geology: lithostratigraphy and chronostratigraphy

These data are a digital representation of information depicted on the printed maps of Seigal, Hedleys Creek, Carrara Range Region, Lawn Hill Region, Riversleigh, Constance Range Region, Mount Oxide Region, Mammoth Mines Region, Myally, Alsace, Coolullah, Kennedy Gap, Prospector, Quamby, Mount Isa, Mary Kathleen, Marraba, Cloncurry, Oban, Duchess Region, Malbon, Kuridala Region, Selwyn Region, Dajarra and Ardmore 1:100 000 Geological Series and Mount Drummond 1:250 000 Geological Series produced by AGSO, the Geological Survey of Queensland (GSQ) and Northern Territory Geological Survey (NTGS).Data present include geological polygons (litho-stratigraphic units), linear structural features (faults, dykes, folds, trends, lineaments etc), and point features (mines, structural points etc). Polygons have a range of attributes extracted from each individual map including unit name, era, period and lithological description, while lines and points are feature coded according to the AGSO publication 'Symbols Used On Geological Maps' (BMR 1989). A standard look-up table of AGSO geological codes and associated descriptions is available (see ADDITIONAL METADATA).The data has gradually evolved from elementary CAD quality data into its present topologically structured GIS format, and hence has many imperfections and inconsistencies. Data has undergone rigorous validation and testing that includes over 80 different tests.

本数据集为澳大利亚地质科学局（AGSO）、昆士兰州地质调查局（Geological Survey of Queensland, GSQ）以及北领地地质调查局（Northern Territory Geological Survey, NTGS）编制的以下印刷地质图件的数字化呈现成果：包括西格尔（Seigal）、赫德利溪（Hedleys Creek）、卡拉拉山脉区（Carrara Range Region）、劳恩希尔区（Lawn Hill Region）、里弗斯利（Riversleigh）、康斯坦斯山脉区（Constance Range Region）、奥克赛德山（Mount Oxide Region）、猛犸矿区（Mammoth Mines Region）、迈亚利（Myally）、阿尔萨斯（Alsace）、库卢拉（Coolullah）、肯尼迪峡谷（Kennedy Gap）、探矿者（Prospector）、夸姆比（Quamby）、艾萨山（Mount Isa）、玛丽·凯瑟琳（Mary Kathleen）、马拉巴（Marraba）、克隆柯里（Cloncurry）、奥班（Oban）、达奇斯区（Duchess Region）、马尔本（Malbon）、库里达拉区（Kuridala Region）、塞尔温区（Selwyn Region）、达贾拉（Dajarra）与阿德莫尔（Ardmore）的1:100000地质系列图，以及德拉蒙德山（Mount Drummond）的1:250000地质系列图。数据集包含的内容有地质多边形（岩性地层单元）、线性构造要素（断层、岩脉、褶皱、构造走向、线性构造等）以及点要素（矿山、构造点位等）。地质多边形附带从单幅图件中提取的多类属性字段，包括单元名称、代、纪以及岩性描述；而线性要素与点要素则依据AGSO发布的《地质图用符号规范》（BMR 1989）进行要素编码。AGSO地质编码及其对应描述的标准查询表可通过附加元数据模块查阅。本数据集最初为基础计算机辅助设计（CAD）格式数据，经逐步迭代升级为当前的拓扑结构化地理信息系统（GIS）格式，因此仍存在部分瑕疵与逻辑不一致问题。数据集已通过包含80余项不同测试项在内的严格验证与质检流程。