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1. 西秦岭西段共和盆地周缘西功卡花岗闪长岩体锆石U-Pb年龄、地球化学特征及其构造意义
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【来源】
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【作者】
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【摘要】
西功卡花岗闪长岩体位于西秦岭西段的共和盆地周缘.对该岩体进行了系统的岩相学、锆石U-Pb年代学和岩石地球化学研究.锆石LA-ICP-MS U-Pb年龄为(227.2±7.3) Ma(MSWD =2.0),代表岩体侵位时间.西功卡岩体具有高硅(SiO2=6...
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2. 湖南瑶岗仙花岗岩体中包体的地质地球化学特征与岩浆演化
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【来源】
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【作者】
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【摘要】
湖南瑶岗仙钨矿床与成矿有关的碱长花岗岩岩株中发育多种类型包体,包括花岗岩、石英闪长斑岩、黑色包体及云英岩析离体等.这些包体的地质地球化学性质不同,来源和演化路径不同,记载着瑶岗仙花岗岩成因和岩浆分异演化的...
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3. 大兴安岭扎兰屯地区格根敖包组碎屑锆石U Pb 年代学、地球化学特征及其地质意义
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【来源】
[期刊论文] 《吉林大学学报（地球科学版）》2015年2期
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【作者】
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【摘要】
格根敖包组广泛分布在大兴安岭中段扎兰屯地区,为一套偏中性的火山岩及碎屑岩组合,主要为安山岩、安山质火山碎屑岩、英安岩及细粉砂岩,夹薄层泥岩。笔者对格根敖包组中细碎屑岩进行了锆石 LA ICP MS U Pb 年代学及古生...
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4. 吉林省下三叠统卢家屯组 LA-ICP-MS锆石 U-Pb 定年及其地质意义
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【来源】
[期刊论文] 《吉林大学学报（地球科学版）》2015年2期
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【作者】
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【摘要】
卢家屯组按岩性组合自下而上分为影背山砾岩段、漏斗山杂色岩段、杨树河子黑色岩段,前人采集到的 Palaeanodonta-Palaeomutela 动物群、P leuroneia？ sp.和叶肢介等生物化石组合指示时代为二叠纪。本次对九台市影背山...
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5. Geochemistry and Chemical Evolution of Saline Lakes of Western Mongolia
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【来源】
[外文期刊]
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【作者】
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【摘要】
This paper presents data on the major and trace element composition of saline lakes of western Mongolia. The main geochemical types of lakes distinguished in the study are soda-, chloride-, and sulfat...
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6. Relationships between the Color and Chemical Composition of Quaternary Bottom Sediments from the Southern Part of the Mendeleev Rise and the Continental Slope of the East Siberian Sea
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【来源】
[外文期刊]
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【作者】
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【摘要】
This paper addresses the problem of relationships between the chemical composition and color of Quaternary marine sediments using the data of X-ray fluorescence analysis for the region of the Mendelee...
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7. Petrology and Geochemistry of Plutonic Rocks in the Northwest Pacific Ocean and Their Geodynamic Interpretation
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【来源】
[外文期刊]
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【作者】
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【摘要】
The paper presents data on the petrology and geochemistry of plutonic rocks dredged from the Stalemate Fracture Zone, Northwest Pacific Ocean, during Cruise SO201-1 of the R/V "Sonne". We proposed als...
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8. Geochemical Features of Ilmenites from the Alkaline Complexes of the Ukrainian Shield: LA-ICP MS Data
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【来源】
[外文期刊]
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【作者】
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【摘要】
LA-ICP MS data are presented for ilmenites from different rocks of the alkaline complexes of the Ukrainian Shield (Chernigovka carbonatite, Oktyabr'skii, Malaya Tersa, and Southern Kal'chinskii gab-br...
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9. Simulation of Forsterite Protonation by the Interatomic Potential Method
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[外文期刊]
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【作者】
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【摘要】
The interatomic potential method in an ionic approximation was used to model the protonation of forsterite crystals. The formation of isolated OH~- groups in iron-free and iron-bearing crystals and ne...
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10. Thermodynamic Properties of Pd Chloride Complexes and the Pd~(2+)(aq) Ion in Aqueous Solutions
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【来源】
[外文期刊]
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【作者】
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【摘要】
Based on the expert review of literature data on the thermodynamic properties of species in the Cl-Pd system, stepwise and overall stability constants are recommended for species of the composition [P...
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11. Mechanism of Density Inversion Formation in Partially Molten Rocks
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【来源】
[外文期刊]
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【作者】
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【摘要】
This paper addresses the problem of the interpretation of geochemical laboratory experiments aimed at investigating partially molten rocks. The material of the terrestrial planets is differentiated at...
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12. 南岭与钨锡矿床有关晚侏罗世花岗岩的成矿专属性研究
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【来源】
[期刊论文] 《大地构造与成矿学》 2014年2期
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【作者】
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【摘要】
晚侏罗世是南岭地区与花岗岩类有关钨锡矿的大规模爆发期,成岩成矿年龄集中在150~160 Ma,与成矿有关的花岗岩属于高钾钙碱性系列的花岗岩类。本文搜集了已发表的主量、微量、稀土元素和 Sr-Nd 同位素数据,根据稀土元素...
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13. 青海格尔木市黑海地区三叠系巴颜喀拉山群变质碎屑岩地球化学特征及物源分析
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【作者】
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【摘要】
巴颜喀拉地块位于青藏高原东北部,是古特提斯的主体,对其进行深入的研究不仅对确定古特提斯的演化过程与方式具有重要意义,而且对探讨该地区与古板块演化有关的成矿地质作用和矿产分布规律具有重要的现实意义.巴颜喀拉...
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14. 北京周边二叠系山西组泥岩地球化学特征及其地质意义
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【来源】
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【作者】
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【摘要】
对采自北京周边的二叠系山西组露头及钻井泥岩样品进行了岩石学和地球化学研究,结果表明:岩石主要由粘土矿物和石英组成,兼有少量碳酸盐岩和长石;岩石中碳酸盐岩含量的高低与CaO、MgO含量有很好的对应关系;SiO2.Na2O和...
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15. Model for Pu Migration in Soils
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【来源】
[外文期刊]
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【作者】
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【摘要】
The term migration is understood as the movements of chemical elements in environmental components. One of the major tasks of radioecology is the elucidation of migration patterns and reliable long-te...
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16. Geochemical Characteristics of the Surface Layer of Bottom Sediments from the Deryugin Basin, Sea of Okhotsk
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【来源】
[外文期刊]
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【作者】
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【摘要】
This paper reports data, including new analyses, on the contents of Ni, Co, V, Mo, Fe, Mn, Zn, Ba, Sc, Y, Cd, Rb, Cs, and W in the sediments of the Deryugin Basin. The features of the distribution of ...
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17. Geochemistry of Paleozoic Terrigenous Sediments from the Oldoi Terrane, Eastern Central Asian Orogenic Belt, as an Indicator of Geodynamic Conditions during Deposition
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【来源】
[外文期刊]
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【作者】
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【摘要】
The analysis of the major and trace element geochemistry of Paleozoic terrigenous sediments from the Oldoi terrane, eastern Central Asian orogenic belt, supports a predominantly felsic source consisti...
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18. Experimental Simulation of Orthopyroxene Enrichment and Carbonation in the Suprasubduction Mantle under the Influence of H2O, CO2, and SiO2
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【来源】
[外文期刊]
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【作者】
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【摘要】
Thermal and chemical gradients at the boundary of a subducting plate and suprasubduction mantle lead to a variety of poorly understood geologic processes. This paper reports the results of experiments...
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19. Paradoxical Transformation of the Equilibrium Quartz—Water System into an Unequilibrated One
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【来源】
[外文期刊]
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【作者】
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【摘要】
Our long-lasting (up to 600 days) experiments conducted at 300°C in hermetically sealed gold and platinum ampoules with the application of quenching techniques demonstrate that the equilibrium quartz-...
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20. Late Pleistocene Sedimentation History of the Shirshov Ridge, Bering Sea
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【来源】
[外文期刊]
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【作者】
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【摘要】
The analysis of the lithology, grain-size distribution, clay minerals, and geochemistry of Upper Pleistocene sediments from the submarine Shirshov Ridge (Bering Sea) showed that the main source area w...
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