- 更多网络例句与岩基的相关的网络例句 [注:此内容来源于网络,仅供参考]
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The chert sequence is an exotic block enclosed in a melange matrix composed of highly cleavaged mudstone.
这套硅质岩为一外来岩体,包括在由高劈理化泥岩组成的混杂岩基质中。
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A schematic model was proposed to illustrate the occurrences of various lithologies and lithofacies associations. The erosional surfaces on siliciclastic mudstones, funnel-shaped structure, and the exhuming of massive cold-seep carbonates exposed might have been occurred concurrently during a tectonic unstable time in SW Taiwan. The deposition of fossiliferous mudstone interfingered with the conglomerate lithofacies, and represented the rapid facies transition from siliciclastic (non-carbonate) into carbonate environment.
综合岩相观察结果,建构一个符合台湾西南部更新世珊瑚礁与基底泥岩接触关系的沉积相模式;其中,基底泥岩顶部的不规则冲蚀面、充填碳酸盐胶结泥岩砾与碳酸岩烟柱的漏斗状沉积,以及块状冷泉碳酸盐岩的出露,可能均为区域地质构造活动时期所造成;至於与含化石泥岩同时沉积的砾岩相,可能均为基底泥岩在快速浅化的过程中所沉积,标志古环境由矽质碎屑快速转变为碳酸盐环境的过程。
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A batholith has been defined as a huge intrusive mass of granitic rock.
岩基的定义是巨大的花岗石侵入岩体。
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In this paper, the petrology, mineralogy and geochemistry of basic-ultrabasic volcanic rock, granite and skarn related to the Sn-Cu skarn-type ore and the vein-type ore in Laochang ore field have been researched systematically, some conclusions are summarized as follows:In Gejiu tin-polymetallic district, the middle Triassic volcanic rocks belonging to calc-alkaline basalt-tholeiite serie, mainly consist of pyroxene, hornblende, feldspar, chlorite and phlogopite; All the granites are peraluminous granites related to the Yanshanian collision-orogeny. Laoka granite closely related to the tin-polymetallic deposits emplaced in the post- orogenic.The metal elements show obviously vertical zones with the variety of skarn types in dimensional extension; The occurrence of garnet skarn and diopside skarn alternately developed in the horizontal zones of the contact between granite and carbonatite are mainly related to two factors: one factor is the infiltration metasomatism of post-magmatic hydrothermal solution, the another is the metrical strata of marble and calcic-dolomite developed in country rocks.
本文重点以老厂矿田中的接触带锡铜矿床和脉状矿床为研究对象,采用化学分析、ICP-MS、X射线粉晶衍射分析、电子探针等测试手段,对本区与成矿相关的基性-超基性火山岩、花岗岩、夕卡岩、电气石-石榴石等进行了系统的地质地球化学研究,研究表明:个旧矿区中三叠纪个旧组地层中的火山岩为钙碱性玄武岩-拉斑玄武岩系列,岩石为辉石-角闪石-长石-绿泥石-金云母组合;本区的花岗岩为过铝质花岗岩,主要与燕山期碰撞造山作用有关,锡多金属成矿与形成时代最晚、分异较好的花岗岩关系密切;本区夕卡岩中的有用共生组份随着夕卡岩类型及其矿物组合的不同具有明显的分带性。
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There are two kinds of spinels in a granulite terrain of Yushujgou, South Tianshan Mountain. One occurs in the intermediate and basic granulite units and is characterized by enriched Al and poor Cr, belonging to Al_spinel. In thin sections it shows dark green color and subhedral to anhedral form, and coexists with other metamorphic minerals, suggesting a neogenic metamorphic mineral of granulite facies. The other occurs in the adjacent ultramafic rock unit, belonging to Cr_spinel. In thin sections, it is dark brown in color and is scattered among olivine, clinopyroxene and orthopyroxene as irregular grains, indicating a stable residual mineral in the process of granulite facies metamorphism.
新疆榆树沟麻粒岩地体中发育两类尖晶石:一类见于中、基性麻粒岩体中,其化学成分富 Al贫 Cr ,属铝尖晶石,镜下为深绿色,呈半自形至他形粒状,与其它变质矿物共生,表现为麻粒岩相的新生变质矿物;另一类发育在空间上与麻粒岩体紧密相邻的超镁铁质岩体中,为铬尖晶石,镜下为深褐红色,呈不规则粒状分布于橄榄石、斜方辉石和单斜辉石之间,为麻粒岩相变质过程中稳定的残余矿物。
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The study of their precise UPb geochronology and characteristics of rock associations shows that (1) small amount of EarlyTriassic (~248 Ma) volcanic rocks were preserved and cropped out in the area, which consist mainly of thin bed of andesitic rocks intercalated with minor basaltic andesites; that (2) the MiddleTriassic magmatism was characterized by extensive felsic igneous rocks with minor basalts interbedded in the middle of volcanic sections in part of areas, and the late MiddleTriassic rhyolites and main body of Lincang granitic batholith have the same extrusive/intrusive time with the age of ~230 Ma; that (3) the LateTriassic volcanic sequences are principally composed of basalts with minor interlayered rhyolites, exhibiting typical characteristics of bimodal volcanics.
三叠纪岩浆作用广泛发育于澜沧江南带,锆石UPb年代学结果及岩石组合特征显示:(1)该区残留有少量的早三叠世火山岩(约248 Ma),主要为一套薄层的以安山岩为主的火山岩;(2)中三叠世以大规模的酸性岩浆作用为主,部分地段的中部夹有少量的玄武岩,其中晚期的流纹岩与该区出露巨大的临沧花岗岩基主体具有一致的形成时代(约230 Ma);(3)晚三叠世则以基性火山岩为主,夹少量流纹岩为特征的&双峰式&火山岩组合。
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These processes resulted i n the formation of peculiar dunites in the hyperbasite complexes ,development of low-sulfide horizons and hortonolite dunites in the basite-hyp erbasite layered intrusions (platinum-group metal deposits),and specific proces ses of transmagmatic sulfurization of the iron-rich igneous differentiates (Cu -Ni sulfide and Cu-Zn-Pb sulfide ores).
这些作用导致产在超基性杂岩中的特殊纯橄榄岩、基性超基性层状侵入体中的低硫层和铁镁橄榄石纯橄榄岩的形成,以及富铁火成分异岩的透岩浆硫化作用(Cu-Ni硫化物和Cu-Zn-Pb硫化物矿石)。
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Focusing on the PGE enrichment mechanism in the basic-ultrabasic intrusions in the Panxi rift, firstly, through the interpretation of TM photograph, data processing of regional geochemical exploration and geophysical prospecting results of gravity, magnetic force and seism, we analyzed the controlling effect of structure and magmatic movement on the PGE mineralization; Secondly, through the study of volcanic apparatus, petrography, measurement of comprehensive geochemical section, isotope tracing and dating of typical PGE-rich melanocratic rock series, we discussed the sources of the PGE-bearing mafic-ultramafic intrusions and basalts, their timing, evolvement sequences, the geochemical processes of magma crystallization and fractionation, and the relationship between magma evolution and structural development; Finally, through the analysis of PGE and chalcophile elements concentrations in the melanocratic rock series and the contrastive study with the Noril''sk magmatic Ni-Cu-PGE sulfide deposit, its related continental flood basalts and Siberia Traps, we discussed PGE mineralization characteristics and its enrichment mechanisms in the melanocratic rock series in the Panxi rift.
本项目首先围绕川西地区主要的PGE矿床及伴生矿的地质环境和有关的地质构造背景,通过TM卫片解译、区域化探和重、磁及地震物探资料分析,总体把握构造及岩浆活动对PGE成矿的控制作用;然后通过对典型富PGE暗色岩套的火山机构地质构造、岩石岩相学、地球化学、同位素定年和示踪等方面的工作,分析本区基性-超基性含矿岩体与喷出岩之间的成岩物质来源、侵入时代及演化序列,研究该区同一岩浆房分异结晶的地球化学过程及其随构造发展的耦合关系;最后通过对暗色岩套PGE地球化学剖面分析以及与俄罗斯诺里尔斯克陆内裂谷溢流型玄武岩中PGE矿化的岩石-构造环境对比研究,探讨该区暗色岩套中的矿化特点和富集部位及其PGE富集机制。
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The petrology and geochemistry indicate that the protoliths of aluminum-rich gneisses are aluminum-rich pelitic and pelitic arenaceous sedimentary rocks, the protoliths of basic granulites are continental tholeiitic basalts. Therefore, the khondalite series may be produced at continental margin.
岩石学及地球化学的初步研究表明富铝的片麻岩的原岩为富铝的泥质和泥砂质沉积岩,所夹基性麻粒岩的原岩可能为大陆拉斑玄武岩,这套孔兹岩系的原岩可能形成于大陆边缘环境。
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Igneous intrusions such as batholiths, laccoliths, dikes, and sills, push upwards into the overlying rock, and crystallize as they intrude.
岩基、岩盖、岩堤、岩席等火成的侵入物向表层岩石推进,并在入侵过程中结晶。
- 更多网络解释与岩基的相关的网络解释 [注:此内容来源于网络,仅供参考]
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acrobatholithic:露岩基的
acre foot 英亩英尺 | acrobatholithic 露岩基的 | acrochordite 球砷锰矿
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acrobatholithic:露顶岩基的
崖锥 acree | 露顶岩基的 acrobatholithic | 端生牙 acrodont
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batholithic:岩基的
batholith | 底盘, 岩基 | batholithic | 岩基的 | bathometer | 水深测量计
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batholithic:岩基的 (形)
batholith 底盘; 岩基 (名) | batholithic 岩基的 (形) | bathos 突降法; 矫揉造作; 陈腐 (名)
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cryptobatholithic:隐岩基的
隐(词头) crypto- | 隐岩基的 cryptobatholithic | 隐岩基时期 cryptobatholithic stage
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cryptobatholithic stage:隐岩基时期
隐岩基的 cryptobatholithic | 隐岩基时期 cryptobatholithic stage | 隐钠长石 cryptoclase
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embatholithic:深蚀岩基的
堤防;沙堤 embankment | 深蚀岩基的 embatholithic | 深蚀岩基时期 embatholithic stage
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embatholithic stage:深蚀岩基时期
深蚀岩基的 embatholithic | 深蚀岩基时期 embatholithic stage | 湾形海岸;多湾海岸 embayed coast
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epibatholithic:隐岩基的
浅层构造 epi-tectonic | 隐岩基的 epibatholithic | 浅海底栖生物的 epibenthic
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hypobatholithic:低蚀岩基的
低砷铁矿 leucopyrite | 低蚀岩基的 hypobatholithic | 低蚀岩基时期 hypobatholithic stage