查询词典 magmatic

The epithermal gold deposits in East China can be divided into low-sulfidation and high-sulfidation types, which are related to granitic and alkaline series magmatic rocks.

这些金矿的形成和分布受区域构造制约，具体地说是受破火山口、火山角砾岩筒以及与火山机构有关的断裂控制。

Geochemical characteristics indicate S-type granites and volcanic rocks depleted in sodium and enriched in potassium, with 62.42%～78.02% w(SiO2), 7.66%～9.13% w(K2O+Na2O), 1.18～2.62 w(K2O)/w(Na2O), and Rittmann index δ of 1.67～3.78. They are enriched in LREE with an average LREE/HREE ratio of 10.94×10-6, and generally depleted Eu with an minimum δEu less than 0.31 especially in the ignimbrite and biotite granite, which have experienced a significant process of separation and crystallization of plagioclases.ΣREE at the main stage of the magmatic activity decreases with time.

地球化学特征显示矿区火山——侵入岩属于贫钠富钾的S型花岗岩，其w(SiO2)值为62.42%～78.02%、w(K2O +Na2O)值为7.66%～9.13%、w(K2O)/w(Na2O)比值为1.18～2.62、里特曼指数δ为1.67～3.78；矿区岩石LREE/HREE比值平均为10.94×10-6，属于轻稀土富集型；Eu普遍亏损，特别是熔结凝灰岩、黑云母花岗岩δEu＜0.31，表明经历了显著的斜长石的分离结晶作用；自早至晚主阶段岩浆活动稀土总量逐渐降低。

Ma Changqian%Li Zhichang%Ehlers C%Yang Kunguang,Wang Renjing A post- collisional magmatic plumbing system: Mesozoic granitoid plutons from the Dabieshan high- pressure and ultrahigh- pressure metamorphic zone, east- central China 10.1016/S0024-4937(98)00043-7 LITHOS , 1998,1-4

徐树桐%刘贻灿%苏文%吴维平%江来利%王汝成大别山超高压变质带面理化榴辉岩中变形石榴石的几何学和运动学特征及其大地构造意义岩石学报， 1999，3

The igneous diversity is not only induced by the magmatic processes but also by the processes caused production of magmas.

火成岩的多样性不仅仅取决于岩浆作用过程，而且也取决于岩浆形成过程。

Ni, Cu and PGE are very important in the study of origin and evolution of mantle derived magmas and the formation of the related magmatic sulfide deposits, because their geochemical natures are different from other trace elements.

Ni、Cu和PGE具有不同于其他微量元素的特殊的地球化学性质，这些特殊的性质使得它们在幔源岩浆起源和演化以及岩浆硫化物矿床的成因研究中具有不可替代的作用。

All these characteristics, largely relevant to the nature of the plume-generated magma source and/or parental magmas, and magmatic evolution, can be used to identify similar rock types in natural occurrence.

这些特点与岩浆源区或母岩浆的性质以及岩浆演化条件有关，为自然界同类岩石的甄别提供了依据。

The La-ICP-Ms U-Pb zircon isotopic dating of granitic mylonites from that shear zoneprovides a magma crystallization age of 914.2-981Ma and indicates they are theNeoproterozoic products of tectonic-magmatic thermal events and the responses to theaggregation of Rodinia Super-continent in this area.

运用LA-ICP-MS法对韧性剪切带内的花岗质糜棱岩进行了锆石U-Pb定年，获得其原岩结晶年龄为914.2～981Ma，显示出均为新元古代早期构造岩浆活动产物，是全球Rodinia超大陆聚合在本区的响应。

Results of the study demonstrate that arsenic in the surface soil of Chengdu basin has approximately six kinds of sources, among which sedimentary series of post-Triassic, Jurassic and Cretaceous systems along Longmen orogenic belt and acid magmatic and basic-ultrabasic rocks in the area are three main sources.

研究结果表明：成都盆地浅层土壤中砷的来源有6种，其中龙门山一带晚三叠纪、侏罗纪、白里纪沉积岩系和酸性岩浆岩及基性岩、超基性岩是成都盆地浅层土壤的主要来源。

The temporal and spatial distribution of stratabound deposits are hence closely related to specific tectonic units, ore-bearing formations and magmatic phases.

因而，层控矿床的时空分布特征与特定的大地构造单元、含矿建造和岩浆活动的时间和空间演化规律有关。

It makes known that the forming of ore-bearing skarn is the same as that of mineral deposit, and has the same experience of having been affected by the primary sedimentatin which is relating to the hot-water deposition, the regional metamorphism, and the limiting remaking of local magmatic hydrothermalism, and is the result of synthetical action by multiple geological events.

可以看出，含矿矽卡岩的形成同矿床一样，经历了与热水沉积作用有关的原始沉积作用，区域变质作用和局部地段岩浆热液的改造作用，是多次地质事件综合作用的结果。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。