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斑岩

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This rock zone, with a NE striking, the whole length of 1 400 km and the width of 100~150 km, is characterized by not onlyalkaline rocks (analcite biotite olivine melilitites, leucititic alnoites, nephelite syenites, aegirite augite syenites, melanite syenites, riebeckite syenite and aegirite bearing quartz syenites) and alkaline granite (riebeckite granite, and aegitite augite riebeckite granite), but also a lot of syenites, monzonites and alkaline feldspar granites or miarolitic K feldspar granites.

该岩带全长约1400km,宽100~150km,不仅发育有狭义的碱性岩(方沸黑云橄榄黄长岩、白榴黄长煌斑岩、霞石正长岩、霓辉石正长岩、黑榴石正长岩和含霓石石英正长岩)和碱性花岗岩(钠闪石花岗岩、霓辉石钠闪石花岗岩),还发育有大量的正长岩类二长岩类碱长花岗岩或晶洞钾长花岗岩。

Volcanic rocks, characterized by huge phenocryst, multi-phenocryst, clastic phenocryst and corrosive phenocryst, developed with surging rhyolitic, plastic agglomerate and pseudo accumulation structure, showing intrusive contact with big phenocryst granite batholith and granite porphyry vein, demonstrates its plutonic attribution.

以大斑、多斑、富碎斑和熔蚀斑为特征,发育涌动流纹、塑性集块和假堆积等构造,并与时差很小的大斑花岗岩基、大斑花岗斑岩脉呈侵入接触关系的非层状火山岩,预示其成因为深成端元属性。

Deep ultramafic xenolith is discovered in alkali-rich porphyry at Liuhe village, Heqing County, Yunnan Province.

云南省鹤庆县六合乡富碱斑岩体中的超镁铁深源岩石包体,对于研究富碱斑岩岩浆的起源和演化及其成岩成矿作用具有重要意义。

The lithological units of this province consist of brecciated mica-olivine pyroxenite pipe, olivine pyroxenite, pyroxenite, gabbro, basalt, diabase, alkali syenite and syenite dike, being dominated by basalt and diabase.

大火成岩省的组成单元主要包括隐爆角砾云母橄辉岩岩筒及辉橄岩、辉石岩、辉长岩、玄武岩、辉绿岩、碱性正长岩和正长斑岩岩墙等,其中以玄武岩和辉绿岩最为发育。

Dapingzhang copper-polymetallic deposit hosted in spilite-quartz keratophyre formation is volcanic-hosted massive sulfide deposit, which formed during the Late Carboniferous and are contemporary with the intrusion of granodiorite-porphyry.

确定了大平掌铜多金属矿床为赋存于细碧岩-石英角斑岩中的块状硫化物矿床。矿床可能形成于晚石炭世,在时代上与花岗闪长斑岩的侵入相当。

Petrological and petrochemical characteristics show that there exist such volcanic and subvolcanic rock types as basalt, iddingsite olivine basalt, olivine basaltic trachyandesite, trachybasalt, latite, trachydacite, trachyte, rhyolite, tuff and granite-porphyry in northeast Jiangxi Province. The volcanic rocks can be subdivided into high K calc-alkaline series, shoshonite series and alkaline basalt series.

岩石学及岩石化学特征表明,赣东北地区早白垩世火山岩及次火山岩主要有:玄武岩、伊丁石化橄榄玄武岩、橄榄玄武粗安岩、粗面玄武岩、安粗岩、粗面英安岩、粗面岩、流纹岩、凝灰岩及花岗斑岩等,可划分为高钾钙碱性、橄榄安粗岩和碱性玄武岩3个系列。

Petrological and geochemical characteristics of alkali-rich porphyries suggest that magmas might not be generated from subducted oceanic slab, but likely from the base of thickened crust, corresponding to eclogite-facies.

富碱斑岩产出的地质背景及岩石学和地球化学特征表明,富碱斑岩并非起源于俯冲的大洋板片,而是源于加厚地壳的底部,源区为榴辉岩相岩石。

Based on the field deposit-geological investigations, structural analysis and petrochemistry studies, this paper presents a Miocene intraplate thermo-upwelling extensional metallogenic model of the Zhunuo porphyry copper deposit which is tectonically controlled by the nearly east-west and north-south extensive faults related to lower crustal flow. The ore-bearing porphyries have the characteristics of typical adakitic rock.

野外基础地质和矿床地质调查、构造分析和岩石化学的研究表明,朱诺斑岩铜矿床在构造上受近EW向和近SN向伸展断裂控制,时间上属于中新世青藏高原南部板内构造过程,含矿斑岩具有典型的埃达克质岩特征。

The analysis of lamprophyrespetrology chemistry reveals that it is a series of high potassium- potassium dike rock,it is abandunt in alkali(K2O,Na2O)and has a large reducing capacity.The diagrams of the major-element variation shows that the geochemical compositions-variations of the major oxides have vague general rules of homologous magmatic fractional-crystallization.the pearce diagram of trace elements shows it intensively enriched in LILE,intensively depleted in coherence elements(such as CrNi.et al).

斑岩的岩石化学分析表明,乳山地区与金矿成矿相伴生的煌斑岩为高钾质-钾质的碱性脉岩系,富碱(K_2O、Na_2O),具较强的还原能力(FeO含量均远高于Fe_2O_3含量),在哈克图解上,主要氧化物的变异规律表现出岩浆分离结晶演化的特点;微量元素的Pearce图呈现强烈的富集LILE,强烈亏损过渡族元素,稀土元素呈向右倾斜的轻稀土富集配分模式,在有关源区性质判别的图解(Cr-Ce/Sr图解和Ce/Yb-Ta/Yb比值图解)上均显示富集地幔源区的性质。

Wanbaoyuan porphyry Mo deposit is located in Liaodong Rift and hosted by late Yanshanian Shizhuzi granodiorite body and later quartz porphyry.

中文摘要:万宝源斑岩型钼矿位于辽东裂谷内,产于石柱子花岗闪长岩体及其后侵入的石英斑岩内。

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