内蒙古东南部早三叠世花岗岩带岩石地球化学特征及其构造环境   总被引：6，自引：0，他引：6  

刘建峰  李锦轶  迟效国  曲军峰  胡兆初  郭春丽 《地质学报》2014,88(9):1677-1690

锆石U-Pb定年结果表明位于林西县北西的转山子岩体的形成时代为245.6±0.9Ma,该岩体与内蒙古东南部的龙头山和建设屯岩体共同构成一条大致平行于西拉木伦河蛇绿岩带的早三叠世花岗岩带。岩石学和地球化学分析表明,上述早三叠世岩体属于钙碱性和高钾钙碱性系列,铝饱和指数(ACNK)均小于1.1,属于偏铝质或弱过铝质的I型花岗岩。其中,转山子岩体轻重稀土分馏较弱,含有较低的Sr含量(400×10-6),显示经典岛弧岩石的特征;建设屯岩体具有强烈的轻重稀土分馏以及较高的Sr含量(400×10-6),显示埃达克岩的地球化学特征;龙头山岩体的轻重稀土分馏特征和Sr的含量总体介于前两者之间。锆石Hf同位素分析表明,上述三个岩体都具有正的εHf(t)值。岩石地球化学特征反映它们起源于不同深度的新生下地壳不同程度的部分熔融作用。综合考虑区域地层和岩浆岩资料,本文认为该花岗岩带与区域上同时代的镁铁质火山岩共同形成于西伯利亚和中朝古板块碰撞造山过程中与伸展有关的地球动力学环境,可能与向南俯冲的古亚洲洋板块在早三叠世的断离引起的软流圈上涌有关。  相似文献   

玲珑金矿大开头矿区Bi特征及指示意义     

胡宝群  高海东  申玉科  郭涛  吕古贤  武际春 《物探与化探》2014,(6)

在金矿床中,金、铋常常相伴产出,在金矿体周围存在明显的铋异常,它可作为重要的指示元素。笔者研究了玲珑金矿不同岩石中铋与金含量之间的关系,比较了基岩地球化学剖面中两元素的相关性,采用电子探针分析了主要矿石矿物中铋和金的含量,发现不同类型岩石中铋含量差异明显,铋在矿体中含量远高于围岩,在矿区中铋与金呈幂函数正相关,铋原生晕规模大、衬度高,与金都是以独立矿物相形式存在。在玲珑金矿化探找矿中,铋含量高,与金呈较好的正相关关系,是最佳指示元素之一。  相似文献   

综合物探方法在焦家断裂带南延中的应用     

智云宝  郭瑞朋  王瑞刚  王英鹏  郑伟军  马瑜宏 《物探与化探》2014,(6)

焦家断裂带是山东省胶西北金矿集中区主要的成矿断裂之一,该断裂带南部被第四系严重覆盖,多年探索研究未果。此次利用高精度磁测、视电阻率联合剖面、CSAMT及SIP等多种物探方法,结合区内成矿地质条件,推断出焦家断裂带南延部分隐伏断裂分布情况,即在黄家附近向北至徐村院为一条断裂带(F1),向南分为三条断裂带(F1、F8和F9),其中F1为主断裂,F8、F9为其次级断裂。经钻探验证与物探推断的焦家断裂带南延部分相吻合,为该区下一步金矿勘查提供了找矿方向。  相似文献   

Lithium Ion Extraction from the High Ration Mg/Li Salt Lake Brine with Ionic Liquid in Triisobutyl Phosphate and Kerosene     

GAO Daolin  LIU Mingming  GUO Yafei  YU Xiaoping  WANG Shiqiang  DENG Tianlong 《《地质学报》英文版》2014,88(Z1):315-316

正1 Introduction As the lightest metal with the unique properties of energy production and storage,lithium is regarded as the new century energy metal.Lithium and its compounds were widely used in various industrial fields,especially in  相似文献   

Phase Equilibrium and Phase Diagram of the Ternary System(MgCl_2 + MgB_2O_4 + H_2O) at 288 and 298 K     

GUO Yafei  SUN Shiru  GAO Diaolin  YU Xiaoping  WANG Shiqiang  DENG Tianlong 《《地质学报》英文版》2014,88(Z1):326-327

正1 Introduction The brines with high concentrations of magnesium and boron resources are widely distributed in the Qaidam Basin of the Qinghai-Tibet plateau,China(ZhengTang,1988).Although some works on the ternary system  相似文献   

Pretreatment Techniques for Arsenic Speciation Analysis in Biosamples     

GUO Jinling  YU Xiaoping  GUO Yafei  DENG Tianlong 《《地质学报》英文版》2014,88(Z1):323-325

正Introduction Coupled techniques such as HPLC–HG–AAS,HPLC–ICP–MS,HPLC–HG–AFS are widely used for arsenic speciation analysis in biosamples,during which pretreatment method usually plays a significant role.This  相似文献   

Phase Equilibria of Salt-water Systems Containing Magnesium and Borate Ions     

HAN Xunian  GUO Yafei  WANG Shiqiang  DENG Tianlong 《《地质学报》英文版》2014,88(Z1):331-332

正1 Introduction A salt lake is a naturally occurring complex body of water and salt interaction.More than 700 salt lakes are widely distributed in the area of the Qinghai-Tibet Plateau.Most of the salt lakes are famous for their abundance of lithium,potassium,magnesium,and boron resources.It is  相似文献   

Studies on the Thermodynamics and Thermal Chemistry Properties for Lithium Salts and Their Aqueous Solution Systems     

LI Long  GAO Daolin  GUO Yafei  DENG Tianlong 《《地质学报》英文版》2014,88(Z1):345-346

正1 Introduction With the industrial development of lithium battery,nuclear and aerospace industry,the demands of metal lithium and its compounds are increasing significantly.Lithium is called as the energy of the metal in the new century(Zhang et al.2001).The total reserve of lithium resources around the world7  相似文献   

Experiment and Pitzer Model Prediction for the Solid + Liquid Equilibria of the Ternary System LiCl–CaCl2–H2O     

MENG Lingzong  LI Dan  DENG Tianlong  GUO Yafei 《《地质学报》英文版》2014,88(Z1):356-358

正1 Introduction Lithium resources are widely distributed in the oilfield brine from the Nanyishan district in the Qaidam Basin(Fan et al.,2007).The investigation of the thermodynamics and phase diagram of the brine system is valuable in providing the theoretic foundation and scientific guidance in the comprehensive exploitation of the mixture salts effectively.Comprehensive  相似文献   

Transformation Process and Mechanism of Lithium Borates     

CAO Lin  LIU Mingming  GAO Daolin  GUO Yafei  DENG Tianlong 《《地质学报》英文版》2014,88(Z1):127-127

正Amounts of lithium-containing salt lake brine resources are widely distributed in the four provinces named Qinghai,Tibet,Inner Mongolia and Xinjiang province,especially the salt lakes in Qinghai-Tibet Plateau are abundant of  相似文献