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成果的有效应用服务是城市地质调查工作的核心驱动力,城市地质数据集作为城市地质调查工作的核心成果,是决定城市地质调查研究成果应用服务有效性的关键。中国地质调查局部署开展丹阳小城镇地质环境综合调查试点,本次共完成遥感解译1 047 km2(3期数据),调查点767个,钻探115个,累计钻探进尺8 720 m(其中第四系孔915 m,水文孔2 366 m,工程孔5 439 m),采集第四纪地质样品2 904组,地下水样品240组,原状土样1 108组,土壤样2 482组,地下水位统测点70个,抽水试验18组等。查清了丹阳市水文地质、工程地质、地质灾害等分布规律,并围绕丹阳市规划建设对地质工作的实际需求,对各类调查原始数据进行了专项加工,建立了数据集,为丹阳市规划建设提供了良好的支撑服务。文章对数据来源、数据收集方法、处理技术等方面进行了整理和归纳,形成了小城镇地质调查应用服务地质数据集的构建方法,为今后小城镇地质调查和数据集处理及应用提供参考。 相似文献
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Abstract Paleostress of the Joseon Supergroup in the northeastern part of the Ogcheon Belt, South Korea, is reconstructed in the Jecheon–Danyang area with the help of calcite twinning. In the study area, the average twin thickness and intensity increase with the total twin strain increase. From the appearance of twins, the average twin thickness and intensity, and the total twin strain, it is estimated that calcite twins were produced under temperatures lower than 200°C. The maximum shortening axis in the study area changes orientation from northeast–southwest to NNW–SSE or northwest–southeast, and finally to north–south. We suggest these three distinct stages with different orientations of the maximum shortening axis can be correlated with: (i) the Paleozoic to Early Jurassic Songrim orogeny; (ii) the Early Jurassic to Late Jurassic Daebo orogeny; and (iii) the Cretaceous Bulgugsa orogeny. 相似文献
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