变质

OCEAN RIDGE MAGMATISM;METAMORPHISM OF OCEANIC CRUST;Ocean floor metamorphism - Sarmiento Ophiolite, Chile;Chemical fluxes in oceanic crust - the 'MEGALEG';Chemical Changes in Oceanic Crust - Troodos Ophiolite;VARIATION IN Sr ISOTOPIC COMPOSITION of SEAWATER WITH TIME: the plate tectonics connexion

洋脊的岩浆作用；洋底壳的变质作用；海底变质作用-Sarmiento蛇绿岩，智利；洋底壳的化学变迁；洋底壳的化学变化-Troodos蛇绿岩；海水中锶同位素随时间的变化：板块构造的联系

The greenstone belt is a typical volcanic-sedimentary formation formed by metabasic-acid volcanic rocks and partly metasedimentary rocks. The bimodal volcanic rocks are mainly tholeiite, which transforms upward into calc-alkali volcanic rock series.

绿岩带为典型的变质基性－酸性火山岩及部分变质沉积岩系构成的火山-沉积建造，火山岩以拉斑玄武岩为主，向上过渡为钙碱性火山岩系列，表现为双峰态型特点。

According to metamophic core complexes, syn-tectonic intrusive rock and its isotope dating data, divide Songliao basin evolution history into three stages: 1 orogenic period land-land collision; 2 post orogenic period mantle delamination, metamophic core complexes uplift and collapse extension; 3 weak extend stable depression in continent.

根据变质核杂岩、同构造侵入岩以及同位素年龄资料，将松辽盆地构造演化历史划分三个阶段：(1)造山期的陆—陆碰撞；2造山期后的地幔拆沉，变质核杂岩上拱和塌陷伸展断陷；(3)弱伸展稳定大陆内坳陷。

In fact, the NCC was dominated in the late Palaeoproterozoic by an extensional-tectonic regime, associated with the development of an aulacogen system, anorogenic magmatism (rapakivi granites, anorthosites, gabbros, granites and pegmatites), with the emplacement of large-scale mafic dyke swarms and with the uplift of the early metamorphic basement or the tectonothermal events of the retrogressive metamorphism.

事实上，在古元古代末期华北克拉通以伸展-裂解构造为主，表现为拗拉谷系发育、非造山岩浆活动(环斑花岗岩、斜长岩、辉长岩、花岗岩类及伟晶岩脉等)、大规模基性岩墙群侵位以及早期变质基底隆升或退变质构造热事件等。

E. , the middle Devonian sedimentary event, which sedimented a suite of epicontinental -coasta1 paraf1ysch formation (the litholcgy was consisted of low fractoin feldspare sandstone and siltstone, and a layer of argilliferous limestone); secondly, the late Variscan magmatic-tectonic event , three biotite diorite batholiths ( previous K-Ar model isotope age was about 220～260Ma and our two -stage common lead isotope age was 260+ 70Ma) and a large number of fracture-controlled quartz diorite veins intrude, and a series of NS distributed tightly complex folds and fractures were developed; thirdly, the late Paleozoic very 1ow grade metamorphism- deformation event, the chlorite-illite crystallinity indices (Δ°2θ) XRD measurements were about 0.25～0.29, which was correlated to the lower part of the anchimetamorphism, and the extremely dense schists were developed throughout the district outcrops

相当于近变质带的下部，并形成切穿矿区几乎所有主要地质体的窃集片理，这与有限相系浅变质碎屑岩的基本宏观地质特征相吻合

Most significantly the site provides a number of slide images on the following subjects: Isograds and chemical reactions in regional metamorphism, chemical reactions in rocks, interplay of nucleation and growth, the origin of porphyroblasts, crystal size distributions, feedback mechanisms, the metamorphic aureole of the Bushveld Complex and reconciling theory and observation, the critical overstep for andalusite growth.

网站还提供了一些重要的幻灯片图片，内容涉及到：等变质级、局部变质化学反应、岩石化学反应、晶核形成与发育的相互关系、斑状变晶起源、晶体大小分类及红柱石发育限度评估。

CL imaging has identified two types of zircon that are metamorphically new growth and recrystallized detrital grains, respectively.

中文摘要：大别-苏鲁造山带大理岩中榴辉岩包体的锆石有两种类型，为变质增生锆石和变质重结晶的残留碎屑锆石。

CL imaging has identified two types of zircon that are metamorphically new growth and recrystallized detrital grains, respectively.

文章摘要：大别-苏鲁造山带大理岩中榴辉岩包体的锆石有两种类型，为变质增生锆石和变质重结晶的残留碎屑锆石。

The existence of large quan tities of glaucophane, a characteristic metamorphic mineral, indicates that these basic lavas have undergone high –P low –T metamorphism.

特征变质矿物——蓝闪石的大量出现表明其经历过高压低温变质作用。

The original Seluohe Group contains at least four parts: Late Archean metamorphic rocks (zircon SHRIMP protolith ages 2517~2534 Ma), Late Paleozoic metamorphosed volcanic-sedimentary strata (zircon SHRIMP 252 Ma), Permian gneissic granitic complex (zircon SHRIMP 260 Ma), and Jurassic mylonitized granites (zircon SHRIMP 168 Ma).

原划分的色洛河群至少由4部分组成：新太古代变质火山－沉积地层（锆石SHRIMP年龄为2517~2534 Ma）、晚古生代变质火山－沉积地层（英安岩锆石SHRIMP年龄为252 Ma）、二叠纪片麻状杂岩体（锆石SHRIMP年龄为260 Ma）和侏罗纪糜棱岩化花岗岩（锆石SHRIMP年龄为168 Ma）。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。