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tectonic-hydrothermal event
相关语句
  相似匹配句对
     EVENT
     事件
短句来源
     ON TECTONIC GENERATION AND HYDROTHERMAL ACTIVITY
     论构造序次与热液活动
短句来源
     Г-DISTRIBUTION AND TECTONIC EVENT
     Г──分布与构造变动
短句来源
     DISTRIBUTION AND TECTONIC ENVIRONMENTS OF THE HYDROTHERMAL FIELDS
     现代海底热液活动区的分布与构造环境分析
短句来源
     The hydrothermal mineralizations are controlled by thermal tectonic events.
     热液金成矿作用受控于构造热事件。
短句来源
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The authors have determined the isotopic compositions of Pb and Nd in ores and host rocks from Dajiangping pyrite deposit The pyrite ores,single pyrite grains and cherts formed by hydrothermal sedimentation have similar Pb isotopic compositions and limited lead isotopic ratio ranges of 206 Pb/ 204 Pb 18 138~18 431, 207 Pb/ 204 Pb 15 622~15 871,and 208 Pb/ 204 Pb 38 299~39 041.These ratios are between the values of fine clastic host rocks and those of...

The authors have determined the isotopic compositions of Pb and Nd in ores and host rocks from Dajiangping pyrite deposit The pyrite ores,single pyrite grains and cherts formed by hydrothermal sedimentation have similar Pb isotopic compositions and limited lead isotopic ratio ranges of 206 Pb/ 204 Pb 18 138~18 431, 207 Pb/ 204 Pb 15 622~15 871,and 208 Pb/ 204 Pb 38 299~39 041.These ratios are between the values of fine clastic host rocks and those of Yunkai Pre\|Sinain basement migmatites.This means that Pb was removed from the Yunkai Pre\|Sinain basement migmatites and fine clastic host rocks by the hydrothermal water.The Pb isotopic compositions are distributed linearly in the 207 Pb/ 204 Pb versus 206 Pb/ 204 Pb and 208 Pb/ 204 Pb versus 206 Pb/ 204 Pb diagrams,with high 207 Pb/ 204 Pb ratios that characterize Gondwana basement.The 207 Pb/ 204 Pb ratios of cherts and pyrite ores from No 4 massive orebody are positively correlated with t Nd DM(0),implying that the Pb is more radiogenic and is derived from older crust materials.The Pb isotopic compositions of limestones are distributed linearly but with different slopes in the 207 Pb/ 204 Pb versus 206 Pb/ 204 Pb and 208 Pb/ 204 Pb versus 206 Pb/ 204 Pb diagrams and are between the values of fine clastic host rocks or Yunkai basement migmatites and those of Mn nodules,suggesting that Pb was their mixture.The t DM and ε Nd (0) of the massive ore and chert are 1340×10 6~2859×10 6 a and -13 9~-16 5 respectively.This means that the Nd was derived from the Pre\|Sinian basement,which is consistent with the Pb isotopic results.The isochron age of (230±13)×10 6 a may indicate a tectonic hydrothermal event of the Indo\|Chinese epoch.

大降坪黄铁矿矿床 3号、 4号矿体和硅质物的铅同位素指示 ,铅来源于基底混合岩和矿体围岩细碎屑岩的混合 ,灰岩的铅同位素反映是细碎屑岩或基底混合岩和震旦纪海水的混合铅。矿石和围岩 2 0 7Pb/ 2 0 4Pb比值高 ,具有古老基底铅同位素组成特征。钕模式年龄与 2 0 7Pb/ 2 0 4Pb显示出较好的正相关关系 ,说明具放射成因越高 ,铅来源于越老的地壳。块状矿石和硅质物的εNd (0 ) =- 13.9~ - 16 .5 ,钕模式年龄 t DM为 1340× 10 6~ 2 85 9× 10 6a,反映其物源为古老的前震旦纪基底物质。 Sm - Nd等时线年龄为 (2 30± 13)× 10 6a,或许反映了粤西地区古特提斯构造运动的热动力事件年龄

The Qingchengzi ore field is a favourable home to several mineral deposits. The sedimentary formation formed in Paleoproterozoic rifting laid the basis for the regional mineralization. After the rifting, it witnessed four major tectonic-hydrothermal events: intrusion of Paleoproterozoic potassic granite and extension of crust, intrusion of middle Proterozoic sodium granite, Indosinian magmatic intrusion and Yanshannian magmatic activites. Driven by multiple tectonic-hydrothermal events, the Ore-forming...

The Qingchengzi ore field is a favourable home to several mineral deposits. The sedimentary formation formed in Paleoproterozoic rifting laid the basis for the regional mineralization. After the rifting, it witnessed four major tectonic-hydrothermal events: intrusion of Paleoproterozoic potassic granite and extension of crust, intrusion of middle Proterozoic sodium granite, Indosinian magmatic intrusion and Yanshannian magmatic activites. Driven by multiple tectonic-hydrothermal events, the Ore-forming fluid was constantly transferred into same strructures. The isospatial metallogenesis is the important ore-forming mechanism for forming of the ore clusters in the Qingchengzi ore field.

辽宁青城子矿田为不同矿种重要成矿集中区。古元古代裂谷沉积建造是区域成矿的基础,此后经历了古元古代钾质花岗岩上侵- 地壳伸展、中元古代钠质花岗岩侵入、印支期岩浆侵入活动和燕山期构造岩浆活动等4 次主要构造热事件。在青城子矿田内4 次构造热事件的热点在空间上比较集中,后生构造活动的热点往往在前一次热点的边缘或附近地区,具有明显“同位”的特征,这是出现同位成矿作用致关重要的条件。只有与成矿作用有关的热点趋于同一空间部位产出,受这种多期构造热事件的驱动,成矿流体才能稳定、有序地向同一构造空间部位迁移、沉淀。这种同位成矿作用是形成青城子矿化集中区的重要机理。

More and more attention has been paid to geo-fluid research recently. Fluid inclusion, as the exclusive window for direct observing fluid process, has been proved one of the most powerful means in geo-fluid research field. As definite geological process always result from definite tectonic-hydrothermal event, so it will be undoubtedly very helpful to find a means to link definite geo-fluid process and definite tectonic-magmatic process together. FTP (fluid inclusion planes) is such an effective means....

More and more attention has been paid to geo-fluid research recently. Fluid inclusion, as the exclusive window for direct observing fluid process, has been proved one of the most powerful means in geo-fluid research field. As definite geological process always result from definite tectonic-hydrothermal event, so it will be undoubtedly very helpful to find a means to link definite geo-fluid process and definite tectonic-magmatic process together. FTP (fluid inclusion planes) is such an effective means. By studying the FIP, we can obtain important information concerning relation of fluid process to rock-forming and ore-forming process. FIP represents the Mode I cracks that occur in sets with predominant orientation perpendicular to the least principal compressive stress axis 3. They are the records of paleofluid now occurring as fluid inclusions in healing cracks of the rock minerals. FIP help us to get a better understanding for rock deformation, regional geological evolution relating to fluid process.

在地质流体研究领域,流体包裹体面(Fluid Inclusion Plane——FIP)作为能将地质流体的活动与特定构造和岩浆作用相联系的一种手段,正在发挥越来越重要的作用。并成为流体包裹体研究领域的一个热点。本文对流体包裹体面的研究背景及现状进行了详细的阐述,指出它在地质流体及相关研究领域具有十分广阔的应用前景。

 
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