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用地下水化学动力学方法计算出的水文地质参数来定量评价水文地质条件——以太原三给地垒及周围地区为例 总被引：2，自引：1，他引：2
作者根据研究区内剖分获得429个结点的原始资料，分别计算出K，T,u,U,t等5个水文地质参数各429个，利用计算结果，编制K值和T值分区图及地下水循环条件图，对研究区水文地质条件进行了定量评价，该方法为其它岩溶区水文地质条件进行定量评价提供了一条有效的新途径。 相似文献
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福建德化汤头－大铭火山基底断隆带位于周宁－华安火山基底断隆带的中部，以印支期的隆起－伸展构造和燕山期的地垒构造活动表现较为明显。该带构造形成及演化机制可较好诠释周宁－华安火山基底断隆带演化趋势，进一步探讨了该区域多种矿产形成及分布的规律。 相似文献
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This study investigates the origin and regional tectonic implications of high-altitude Plio (?)–Quaternary fluvial deposits developed over the Bozdağ horst which is an important structural element within the horst–graben system of western Anatolia, Turkey.A total of 23 deposits occur near the modern drainage divide comprising fluvial to occasionally lacustrine deposits. The deposits are all elongated in N–S direction with a width / length ratio of 1 / 10. The largest of them is of 13 km in length with a maximum observable thickness of about 100–110 m. Morphological, lithological, deformational characteristics of these deposits and the drainage system of the area all suggest that the deposits were formed due to uplift and southward tilting of the Bozdağ horst. This tilting which is estimated as 1.2° to 2.2° caused accumulation of the stream load along channels flowing from south to north. All the deposits were later dissected by the same streams with the exception of one deposit which still preserves its original lake form. These deposits are of Quaternary age, which corresponds to the latest N–S directed extensional tectonic phase in the region. 相似文献
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研究认为,地震是楔块运动引起的,楔块运动的主要动力来自于楔块内部的隐爆一均衡作用。“两堑夹一垒”是楔块运动系统的基本形式。研究发现,大洋中脊地震带、环太平洋地震带和大陆裂谷地震带（以郯庐断裂地震带为例）均位于“两堑夹一垒”楔块系统中,其中一垒的活动,即倒楔的运动与地震带紧密相关。 相似文献
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文章从地层、构造、矿体和矿石等方面总结了河南省舞阳铁矿田岗庙刘铁矿床的地质特征,分析了控制铁矿床的地质构造.铁矿床为沉积变质型铁矿,含矿岩系位于新太古界铁山庙组的上、下混合岩段之间;矿床赋存的空间位置严格受地堑和地垒式断块控制;古侵蚀面不整合构造面只使岗庙刘矿床中部矿块的矿石全部氧化,而对东部和西部矿块没有造成很大的影响. 相似文献
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Mikhail Zhelezniak QingBai Wu Anatolii Kirillin Zhi Wen Aleksandr Zhirkov Vladimir Zhizhin 《寒旱区科学》2021,13(2):107-122
The Elkon Horst is a geological structure that consists of heterogeneous strata with highly variable geocryological and temperature conditions. Gaining accurate knowledge of permafrost distribution patterns within this structure is of both scientific and practical importance. In mountainous terrain, the ground thermal regime is controlled by both surface and subsurface conditions. Surface conditions include snow cover characteristics, the presence or absence of vegetation, vegetation density, etc.. In contrast, subsurface conditions involve rock lithology or petrography, density, quantity and depth of fissures, groundwater, etc.. This article examines ground thermal regimes in various geomorphological settings based on temperature measurement data from geotechnical boreholes. The occurrence and extent of permafrost were evaluated for the entire horst area using direct and indirect methods. The maximum permafrost thickness measured in the Elkon Horst is 330 m, and the estimated maximum is 450 m at higher elevations. Thermophysical properties were determined for the major rock types, and the geothermal heat flux was estimated for the study area. The thermal conductivities were found to vary from 1.47 to 4.20 W/(m·K), and the dry bulk densities to range between 2,236 kg/m~3 and 3,235 kg/m~3. The average geothermal heat flux was estimated to be 44 mW/m~2. 相似文献
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在吉林省梨树县孟家岭一带，于前人所划属的石炭纪磐石组砂岩、板岩、灰岩中发现丰富动植物化石。经鉴定有Ｈｕｓｌｅｄｉａｃｆｇｍｎｄｉｃｏｓｌａ，Ｓｔｅｎｏｓｃｉｓｍａｓｐ．，Ｃｏｍｐｓｏｐｔｅｒｉｓｓｐ．，其中植物与我国北部和西伯利亚等地区的安格拉植物群相当；从腕足、苔藓虫等化石组合上看均为早二叠世常见分子。大黑山条垒中部的这一首次发现，对吉林省的地层划分、分区及对比具有重要意义。 相似文献