共查询到20条相似文献，搜索用时 62 毫秒
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针对地质环境中不同断层构造出现交叉、削截等现象而构成的复杂断层网络，本文基于隐函数曲面重建提出了一种三维断层网络隐式建模方法。该方法首先以径向基隐函数曲面重建理论为基础，基于地质剖面图中断层轮廓线数据以及断层产状信息隐式构建三维断层面模型；然后使用二叉树结构描述不同断层间的空间拓扑关系构建断层网络模型；最后，考虑断层建模中产状信息估计的不确定性，定义了断层面法向量概率分布模型，采用信息熵指标定量评价断层模型质量。以贵州水银洞金矿床为实例矿床，选定包含多条断层的区域作为试验区，采用该方法构建了实例三维断层网络模型，结果表明，基于隐函数曲面的三维断层网络建模方法能快速构建区域内多条断层的三维断层网络模型和拓扑结构，有助于复杂断层网络快速建模和三维形态分析，为断层构造定量研究提供基础。 相似文献
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斜向滑动与走滑转换构造 总被引：11，自引：1，他引：11
斜向滑动是边界型断层或古断裂复活的一种常见型式，其译名不应该用转换挤压或转换拉张。而应该用斜压或斜张构造。走滑转换构造是指沿断层的走滑运动在断层末端或转变部位转换成张、压或斜向滑动的构造。断层的分段性是普遍现象，讨论了各分段、断层间叠接带的构造型式。花状构造是斜滑断层的一种重要表现型式，并讨论了其三维特征。 相似文献
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作者在本文中提供了一种用扫描图像来进行断层地定量化描述方法，通过坐标转换，可以准确，快速地完成地断层定量化描述，为计算机自动绘图，跨断层进行储层预测提供了有关断层的定量化信息，该方法具有方便，灵活的特点，具有广泛的适用性。 相似文献
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皖南控煤推覆构造类型初析 总被引：1，自引：0，他引：1
皖南地区，推覆构造十分发育，其类型可分４种，即台阶状道冲断层及断层转折褶皱；叠瓦状逆冲断层；堆叠式逆冲推覆构造；翻卷褶皱。认识这些类型，对了解区域构造和寻找煤炭资源都有很重要的意义。 相似文献
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王翔 《西安地质学院学报》1995,17(3):9-14
本文研究了在迪费德地区东南沿海出露的上古生界中的小型正断层的几种位移分布模式，简要对比并探讨了断层的生长机制，以及几种可以影响断层位移分布特征的因素；指出断层生长过程中的衔接、不规则的断层位移等值线的存在、研究剖面的方位以及岩性的变化是导致断层位移分布特征多样化和复杂化的主要因素。 相似文献
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本文以山西省汾西矿区崔家淘井田断层构造的展布规律、断层面构造岩特征民层滑动擦痕为依据，分析断层发育的力学机制衣成生欠，应用赤平投影图矿区两条主干断层，得出 区三向主支应力轴方向的认识，提出一种在华北地区有代表性煤矿区展布模式芝对断层的识别和预测具有指导意义。 相似文献
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文中设计了3种类型的基底收缩挤压砂箱实验模型和一种基底无收缩挤压砂箱实验模型，用于研究柴达木盆地北缘新生代构造的变形机制。实验结果表明，基底收缩挤压模型以反冲断层发育为特色。在双侧对称对冲挤压模型中，正冲和反冲断层的发育程度基本处于均衡状态；在双侧不对称对冲挤压模型中，反冲断层更加发育，尤其在挤压速度较快一侧更加显著；单侧挤压模型中，以反冲断层发育、正冲断层很少为特征。由此表明，基底收缩作用和挤压作用的不对称性促使反冲断层的发育。根据实验结果与实际剖面的对比，笔者认为，基底收缩和不对称挤压是导致该区特殊剖面结构的可能原因，该区新生代构造变形是在基底收缩作用参与下、以祁连山为主的侧向不对称挤压作用的结果。 相似文献
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宝积山煤矿F6断层导水性能的初步研究 总被引：2，自引：0，他引：2
宝积山煤矿井下巷道在揭露Ｆ＿６号断层时出现了大量涌水、淹巷及无水两种现象，因此对该断层形成了导水、隔水两种不同的认识。经综合分析后认为；在Ｆ＿６号断层面处，若两盘均为软岩层接触或软岩层与硬岩层接触，该断层表现为隔水；若两盘均为硬岩层接触，则表现为导水。上述结论通过材料井淋水量的大小变化与主井积水深度的变化得到了验证。 相似文献
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物探方法在探测隐伏断层中的应用 总被引：7，自引：0，他引：7
在地震安全性评价和工程场地勘探中，探明活动断层是一项必做的工作；而探明活动断层的方法选择要因地制宜，经济科学。笔者运用电剖面法、地震反射法、地质雷达法以及断层气测量方法，对珲春地震小区内含煤盆地中的发震断裂构造进行了研究，断层气测量法是一种探测(除水域、稻田以外的地区)隐伏断层的简捷、快速、可靠、经济的方法。 相似文献
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Gilles Serge Odin 《Comptes Rendus Geoscience》2002,334(6):409-414
Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414. 相似文献
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Inter-regional correlation of transgressions and regressions in the Cretaceous period 总被引：1，自引：0，他引：1
T. Matsumoto 《Cretaceous Research》1980,1(4):359-373
Well investigated platforms have been selected in each continent, and the history of Cretaceous transgressions and regressions there is concisely reviewed from the available evidence. The factual records have been summarized into a diagram and the timing of the events correlated between distant as well as adjoining areas.On a global scale, major transgressions were stepwise enlarged in space and time from the Neocomian, via Aptian-Albian, to the Late Cretaceous, and the post-Cretaceous regression was very remarkable. Minor cycles of transgression-regression were not always synchronous between different areas. Some of them were, however, nearly synchronous between the areas facing the same ocean.Tectono-eustasy may have been the main cause of the phenomena of transgression-regression, but certain kinds of other tectonic movements which affected even the so-called stable platforms were also responsible for the phenomena. The combined effects of various causes may have been unusual in the Cretaceous, since it was a period of global tectonic activity. The slowing down of this activity followed by readjustments may have been the cause of the global regression at the end of the Cretaceous. 相似文献
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The Afyon stratovolcano exhibits lamprophyric rocks, emplaced as hydrovolcanic products, aphanitic lava flows and dyke intrusions, during the final stages of volcanic activity. Most of the Afyon volcanics belong to the silica-saturated alkaline suite, as potassic trachyandesites and trachytes, while the products of the latest activity are lamproitic lamprophyres (jumillite, orendite, verite, fitztroyite) and alkaline lamprophyres (campto-sannaite, sannaite, hyalo-monchiquite, analcime–monchiquite). Afyon lamprophyres exhibit LILE and Zr enrichments, related to mantle metasomatism. 相似文献
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正20140751 Guo Xincheng(Geological Party,BGMRED of Xinjiang,Changji 831100,China);Zheng Yuzhuang Determination and Geological Significance of the Mesoarchean Craton in Western Kunlun Mountains,Xinjiang,China(Geological Review,ISSN0371-5736,CN11-1952/P,59(3),2013,p.401-412,8 相似文献
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正20141058 Chen Ling(Key Laboratory of Mathematical Geology of Sichuan Province,Chengdu University of Technology,Chengdu610059,China);Guo Ke Study of Geochemical Ore-Forming Anomaly Identification Based on the Theory of Blind Source Separation(Geosci- 相似文献
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正20141334 Chen Kun(Institute of Geophysics,China Earthquake Administration,Beijing100081,China);Yu Yanxiang Shakemap of Peak Ground Acceleration with Bias Correction for the Lushan,Sichuan Earthquake on April20,2013(Seismology and Geology,ISSN0253-4967,CN11-2192/P,35(3),2013,p.627-633,2 illus.,1 table,9 refs.)Key words:great earthquakes,Sichuan Province 相似文献
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正20141624 Cai Xiongfei(Key Laboratory of Geobiology and Environmental Geology,Ministry of Education,China University of Geosciences,Wuhan 430074,China);Yang Jie A Restudy of the Upper Sinian Zhengmuguan and Tuerkeng Formations in the Helan Mountains(Journal of Stratigraphy,ISSN0253-4959CN32-1187/P,37(3),2013,p.377-386,5 illus.,2 tables,10 refs.) 相似文献
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正20142263Lü Shaojun(Geological Survey of Jiangxi Province,Nanchang 330030,China)Early-Middle Permian Biostratigraphical Characteristics in Qiangduo Area,Tibet(Resources SurveyEnvironment,ISSN1671-4814,CN32-1640/N,34(4),2013,p.221-227,2illus.,2tables,22refs.)Key words:biostratigraphy,Lower Permian,Middle Permian,Tibet 相似文献
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正20142560Hu Hongxia(Regional Geological and Mineral Resources Survey of Jilin Province,Changchun 130022,China);Dai Lixia Application of GIS Map Projection Transformation in Geological Work(Jilin Geology,ISSN1001-2427,CN22-1099/P,32(4),2013,p.160-163,4illus.,2refs.) 相似文献
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正20140692 Duo Tianhui(No.402 Geological Team,Exploration of Geology and Mineral Resources of Sichuan Authority,Chengdu611730,China);Wang Yongli Computer Simulation of Neptunium Existing Forms in the Groundwater(Computing Techniques for Geophysical and Geochemical Exploration,ISSN1001-1749,CN51-1242/P,35(3), 相似文献