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中国大规模岩金矿床类型及找矿远景分析 总被引：1，自引：0，他引：1
讨论了大规模金矿床的概念，划分了中国五种大规模岩金矿床类型，绿岩型，变质碎屑岩型沉积岩型，火山岩型，花岗岩型，研究了各类金矿床的地质构造背景，控矿条件，主要地质特征和找矿前景，指出中国具有形成超大型多矿床的条件。认为中国超大型金矿床属“规律型”服从中小型金矿床统一的成矿规律，与中小型金矿床一起成带成片（矿田）产出，只是其具体控矿条件更为有利。 相似文献
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西秦岭碎屑岩型金矿是近年来发现的重要矿床类型。根据金矿床岩系的类型、特征矿石矿物的组合性质，对其金矿床进一步划分为三大类型。碳—硅泥岩型金矿床，细碎屑岩型金矿床，角砾岩型金矿床。通过地质特征对比，初步认为碎屑岩型金矿床是一类由构造热液形成的，由碎屑岩容矿的，具有特殊地质意义的金矿成矿系列 相似文献
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秦岭沉积岩区金矿类型及其对比研究 总被引：4，自引：0，他引：4
按照地质背景，金矿地质特征和地球化学特征，将秦岭沉积岩区金矿划分为６种类型，同时对它们的地质背景，赋矿围岩，成矿作用，金矿床类型及空间分布进行了讨论。 相似文献
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江西银山九区南段铜硫金矿床地质特征 总被引：1，自引：0，他引：1
九区南段铜硫金矿床位于江西银山矿九区铜硫金矿床的南段，为一隐伏矿床。本文在前人资料的基础上，根据钻孔和现场施工的见矿情况，探讨了九区南段铜硫金矿床的地质特征。 相似文献
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本文在对微细浸染型金矿床的地质及地球化学特征和成矿条件进行综合分析的基础上，对省内该类型金矿床的特点和成矿地质条件进行了分析和对比，指出了省内寻找该类型金矿床的找矿方向。 相似文献
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西秦岭碎屑岩型金矿成矿地质特征 总被引：5，自引：0，他引：5
西秦岭碎屑岩型金矿是近年来发现的重要矿床类型。根据金矿床岩系的类型、特征矿石矿物的组合性质,对其金矿床进一步划分为三大类型。碳—硅泥岩型金矿床,细碎屑岩型金矿床,角砾岩型金矿床。通过地质特征对比,初步认为碎屑岩型金矿床是一类由构造热液形成的,由碎屑岩容矿的,具有特殊地质意义的金矿成矿系列 相似文献
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本文对湖南已知金矿床按其成矿地质环境、成矿作用以及矿床的矿石矿物组合特征和硫化物的含量等,划分为6大金矿类型,22个亚类。对各类型矿床的控矿地质因索和区域分布进行了初步讨论。 相似文献
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<正> 金矿床成因类型划分是一个十分重要而又有严重分歧的问题。自W·林格仑(1933)和 W·爱孟斯( 1937)首次用岩浆热液体系把世界金矿床作了较为系统地分类至今,世界上有上百名地质学家相继提出了各自的分类方案。 涂光炽先生最近提出了我国原生金矿床类型划分的新方案,其划分原则是:(1)简便易行;(2)分类应考虑成矿地质背景;(3)兼顾工业利用、成因及形成条件;(4)借鉴传统和国外分类的某些做法和名称。关于如何体现金矿成矿地质背景,涂先生认为主要应考虑矿床的含矿岩系,但又不拘泥于含矿岩系。同时指出,含矿岩系不等同于含矿围岩。含矿岩系与矿床在空间、时间及成因上有密切关系。 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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K.Naganjaneyulu 《地学前缘(英文版)》2014,5(1):1-2
正The Precambrian shields and associated suture zones of the globe preserve important records of continental growth and destruction,the formation and closure of ocean basins,and the early evolution of the Earth in terms of tectonics,resources,and environment.They also offer critical clues on the nature and style 相似文献
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Daniel Harlov 《地学前缘(英文版)》2014,5(5):621-625
正1.Introduction This special issue of Geoscience Frontiers is a tribute volume honoring the life and career of Jacques Touret.A set of research papers has been assembled,which broadly reflect his research interests over his 50 plus year career.These papers focus on the role that fluids play during the formation and evolution of the Earth's crust.Below I provide a brief summary of the life of Jacques Touret,along with a select bibliography of his more important papers.This is then followed by a brief introduction to the papers assembled for this special issue. 相似文献
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《地学前缘(英文版)》2014,(1):139-141
正1 AIM AND SCOPE GEOSCIENCE FRONTIERS(GSF)is a bi-monthly international journal that publishes in English high quality original research articles and timely reviews in interdisciplinary fields of Earth and Planetary Sciences.GSF aims to bridge innovative,provocative and challenging concepts and models related to various fields of research including petrology and geochemistry in understanding lithospheric architecture and mantle dynamics,global tectonics,economic geology and fuel exploration,geophysics,stratigraphy and paleontology with new 相似文献
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正The world petroleum exploration suggests that,about70%of the world’s potash resources were discovered during oil and gas exploration(Zheng et al.,2007).The Kuqa depression in the Tarim basin is abundant with petroleum exploration data,and 相似文献
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正Qarhan Salt Lake is located in the eastern part of the Qaidam Basin,which is first discovered the large potash deposit in the late 1950s.The Bieletan section is located in the west of Qarhan Salt Lake,where saline sediment 相似文献
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正With the approach of the 45th World Earth Day,China’s Ministry of Land and Resources issued the status of the Chinese geological survey and environments on 22nd April 2013.Regional geological survey in 2013 achieved new results—(why was oceanic in twice?)polar and oceanic expedition were fully completed,a national census of geography was begun,and 相似文献
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正1 Introduction The Lop Nor playa,located in the eastern end of the Tarim Basin,capped with a thick salt crust covering an area of approximately 5,500 km2(Ma 2007)that closely resembles a"Great Ear"in satellite images.Understanding the formation of the salt crust can provide important 相似文献
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In Liaoning, Hunan, Guangxi, Guizhou, Gansu, Sichuan, Anhui, Jilin and other provinces in China, there is a wide occurrence of metal quantity over 1000 tons of refractory gold ores, principally because of low gold recoveries and become ＂stay mine＂. Features of refi＇actory gold ores are： gold in micro-particles or a microscopic state that is wrapped in pyrite, presence of arsenopyrite and other sulfide minerals or disseminated in the crystal lattice of sulfide minerals; harmful impurity elements such as arsenic, carbon, mercury, antimony, copper with high content are closely related with the gold, and these elements affect the contact reaction between the gold and solvent extraction, making the recovery of the gold extraction process low. In the past 20 years, overseas countries have developed the application of the roasting oxidation method, hot acid （alkali） oxidation, bacterial oxidation and flash chlorination oxidation technology to solve this problem.Among these, biological oxidation has developed rapidly in the domestic market and gold enterprises abroad because of its low investment in infrastructure, low production costs, less environmental pollution, simple process and easy control, etc. 相似文献