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1.
团结沟金矿床地质地球化学模型   总被引:6,自引:0,他引:6  
魏仪方  刘春华 《黄金》1996,17(2):3-11
该文在论述团结沟金矿床成矿地质背景、矿床地质特征及成矿模式的基础上,建立了团结沟金矿床地质地球化学模型。同时指出,运用矿床地质地球化学模型是寻找隐伏矿床的有效途径.  相似文献   

2.
王志宏 《有色矿冶》2010,26(1):2-3,8
通过对辽宁省内成矿环境不同的铜钼两个典型矿床的成矿作用、矿床地质特征的分析,提出了接触交代(矽卡岩)型矿床的成矿机制、矿体形态、矿物共生组合、围岩蚀变等方面的矿化特征,部分揭示了接触交代(矽卡岩)型矿床的成矿模式。  相似文献   

3.
新疆西天山地区矿床作为矿产资源富集区,具有极高的研究价值。为此,针对新疆西天山地区矿床地质及成矿机理初步研究。分析新疆西天山地区矿床地质,得出新疆西天山地区矿床出露地层、地质结构以及相关岩性;研究新疆西天山地区矿床成矿机理,明确新疆西天山地区矿床成矿构造归属,得出新疆西天山地区矿床热液成矿构造机理为热液沉淀成矿。  相似文献   

4.
本文以江西某铜钼矿床为例,基于江西成矿地质背景对铜钼矿床的成因类型进行研究,包括铜钼矿床形成受地层、蚀变、岩浆岩以及构造的影响以及成矿的物理化学条件。同时分析了铜钼矿床的地质特征,包括矿石结构、矿石构造、矿石类型以及成矿阶段划分。  相似文献   

5.
武夷山成矿带是我国重点成矿带之一,分布着众多的铜铅锌银等多金属矿床,矿床类型多样.江西上饶蔡家坪矿床是一个近年来新发现的铅锌矿床,通过对矿床区域成矿地质背景、矿区地质特征、矿体地质特征等综合分析研究,初步探讨了区内铅锌矿床的成因,认为该矿床属火山沉积一次火山热液型及斑岩型矿床,归属次火山热液矿床范畴.在上述基础上,给出...  相似文献   

6.
赞比亚谦比希Mwambashi铜钴矿床属层控沉积+后期变质改造型铜钴矿床,该矿床受加丹加超群下罗恩亚群地层的控制。该矿床的地质特征表明其形成是多种地质因素综合作用的结果,其中,同生沉积作用占主导地位,但是,后期的区域变质作用以及区域大地构造运动(主要是褶皱构造)也是不可缺少的重要因素。通过对该铜钴矿床的区域成矿背景、矿区成矿地质条件以及矿床成矿机理方面的的分析和探讨,有助于拓宽矿山地质设计工作的思维深度和广度,以利于制定更加合理的设计方案,为矿山企业的经济建设服务。  相似文献   

7.
我国铅锌矿床成矿地质主要分布在北方的内蒙古赤峰浩布高地区,然而此区域矿山已经被大量开采,所以对其他地区的铅锌矿床进行研究和勘察是当下急需部署的战略任务。本文就铅锌矿床的成矿地质做出必要的分析,而后又对我国铅锌矿床的成矿地质特征和深部成矿地质预测手段进行了探讨,希望能为相关学者提供必要的信息参考。  相似文献   

8.
对巴山锰矿带区域地质作了介绍,剖析了几个不同类型的典型矿床,总结和归纳了矿床地质特征,对矿床成因进行了分析,指出了成矿远景.  相似文献   

9.
辽宁省铁岭市柴河铅锌矿床的成因,一直被地质界所重视。先后有岩浆期后中一低温热液矿床成矿、古地下水成矿、混合岩化成矿、层控型矿床的热卤水成矿等不同观点。分析矿床的成因的焦点主要是矿床成矿热液和矿质的来源问题。本文通过矿床的地质特征、同位素地球化学特征分析认为:辽宁省铁岭市柴河铅锌矿为深层变质热液改造型后生层控铅锌矿床。  相似文献   

10.
杨江 《世界有色金属》2023,(24):124-126
矿床勘查是矿业领域重要的一环,而地质结构与成矿规律的关系是决定矿床形成及其分布的关键因素。本文通过深入研究地质结构与成矿规律之间的联系,探讨了在矿床勘查中如何更好地利用地质结构信息来指导实际工作,以提高勘查的准确性。  相似文献   

11.
转炉炉壳热应力分析   总被引:5,自引:1,他引:4  
任学平  郭志强  邹家祥 《炼钢》2001,17(6):47-49
根据实际转炉建立实体模型。以有限元为手段,考虑了炉衬和炉壳材料的物性参数随温度变化的特点和炉衬与炉壳之间膨胀间隙,计算了转炉炉壳在温度载荷和炉衬膨胀压力同时作用下的热应力。所得结果可为转炉炉壳设计提供依据。  相似文献   

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13.
通过对焦炭在高炉内的历程及其变化规律的剖析,阐述焦炭热性能指标的意义,形象地把焦炭在高炉内的损耗分为三部分(M1,M2,M3)。指出M2对焦比及焦炭价格有一定的指导作用。  相似文献   

14.
Cancer of the cardia is traditionally discussed with cardiac cancer of the lower portion of the esophagus and upper gastric cancer invading the esophagus, and the specific characteristics of cancer of the cardia have never been clearly defined. We reviewed the outcome of 172 patients with adenocarcinoma of the cardia who had undergone radical surgery between 1949 and 1994 in the Division of Gastrointestinal Surgery of the Cancer Institute Hospital. The centers of the tumors were located within 2 cm above and below the boundary between the esophagus and the stomach, and their longitudinal diameter was less than 8 cm. We divided the patients into an early period (1949-1979; n = 79) and a late period (1980-1994; n = 93), and focused on the historical transition. There were no differences in patient gender or histology between the two periods. However, the late period was associated with fewer cases of esophageal invasion and shorter longitudinal diameter, as the age of the population advanced. The number of advanced cancers such as the localized and infiltrative type had decreased, and early cancer and early clinical stage had become more common, but despite the fact that the number of early cancers had increased, extended dissection, such as thoracic and paraaortic lymph node dissection, was performed more frequently. By clinical stage, the long-term outcome markedly improved in Stage I patient in the late period, and tended to improve in Stage II and III patients. This appears to have been attributable to the prevention of micrometastasis by extended dissection, although the number of early cancers is another major potential cause. There were no differences in the outcome of Stage IV patients between the two periods, and further advances in multimodality therapy must be awaited. The range of resection is basically proximal gastrectomy, and if there are adequate indications, the prognosis is favorable. In view of the status of lymphatic flow and lymph node metastasis, and long-term results, lateroaortic lymph node dissection is important. Since the number of early cancer patients has been increasing, if intraabdominal recurrence is prevented, intrathoracic lymph node dissection will contribute greatly to the outcome of such patients.  相似文献   

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16.
The effect of 20 different antibiotics on chemotaxis by human neutrophils was studied. Human leukocytes incubated with chloramphenicol, rifampin, sodium fusidate, and tetracyclines in vitro showed markedly depressed migration. The mechanisms by which these antibiotics affect leukotaxis are discussed.  相似文献   

17.
Usage of quality of life of psychiatric patients' relatives as the parameter of estimation of the quality of psychiatric care is considered. By means of standard questionnaire elaborated by the authors as well as by means of both individual and group conversations the quality of life was analyzed in 40 relatives which lived together with psychiatric patients. Different spheres of their life and difficulties (financial, social-psychologic, production) were examined in families with such patients. The defects of psychiatric care that had direct influence on the quality of life of the psychiatric patients' relatives are outlined.  相似文献   

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Some theories of personality hold that an individual's perception of others is influenced by his own personality characteristics; more specifically, that a trait of low social value will be projected more into others, and that insight into the possession of these characteristics reduces this distortion. These 2 hypotheses were tested by having a group of college students rate each other (including themselves) on degree of friendliness or hostility. Agreement with group rating about self yielded the insight score. In general, the hypotheses were supported; the "friendly" Ss were most accurate in their perception of others, and insight was positively associated with accurate perception. From Psyc Abstracts 36:04:4HL16M. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

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