斜长岩
- 与 斜长岩 相关的网络例句 [注:此内容来源于网络,仅供参考]
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According to the phase relationship in the reaction system felsic melt+ small amount of peridotite, we suggest that assimilation of the mantle clinopyroxene + olivine + spinel as well as the fractional crystallization of sodic amphibole and clinopyroxene is an important process which modifies the composition of adakites and cause the Na depletion in adakites..
根据长英质熔体与橄榄岩反应体系的相关系,我们认为,地幔单斜辉石、橄榄石、尖晶石的混染作用以及钠质角闪石和斜方辉石的分离结晶作用,是改变埃达克熔体组成并导致其Na亏损的一个重要的过程。
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There are two kind of zicons in amphibolite from the Haiyangsuo area,eastern Shandong Province:(1)Xenocrysts,they give 207Pb/208Pb age of 2149Ma,which suggests an early proterozoic basement in this area;(2)Magmatic euhedral zircons,they give an upper intercept age of 1784±11Ma and lower intercept age of 448±13Ma.
中文摘要:胶东海阳所胶南群斜长角闪岩中的锆石有2类:(1)捕掳晶锆石,它给出2149Ma 的207Pb/206Pb 年龄,证明该区存在有早元古基底;(2)岩浆结晶锆石,它的不一致线上下交点年龄分别为1784±11Ma和448±13Ma。
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From the above, the authors conclude that the Pl-lherzolite is the product of the reequilibrium between the depleted harzburgite and the basic melt.
笔者认为,含长二辉橄榄岩为基性熔体渗入到先前已亏损的斜辉辉橄岩中,并与之重新平衡的产物。
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Honghuagou ; Gold deposits ; REE geochemistry ; Granite ; Metamorphic rock ; Issite ; Source bed
红花沟;金矿;稀土地球化学;花岗岩;变质岩;斜长角闪岩;矿源层
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The ophitic and subophitic textures, elongated apatite crystals, low Al(superscript Ⅵ)/Al(superscript Ⅳ) ratios (0.00-0.28, 0.12 on average) in clinopyroxene, and low Cao content in olivine (0.04%~0.24%, average 0.12%) indicate that the gabbrowas crystallized at a low pressure.
辉长岩所具有的辉绿辉长结构、大量细长针状磷灰石、单斜辉石中较低的Al/Al值(0.00~0.28,平均为0.12)及橄榄石中较低的CaO含量(0.04%~0.24%,平均为0.12%),均体现出浅成侵入岩的特点。
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The ophitic and subophitic textures, elongated apatite crystals, low AlⅥ/AlⅣ ratios (0.00 ~0.28, 0.12 on average) in clinopyroxene, and low CaO content in olivine (0.04%~0.24%, average 0.12%) indicate that the gabbro was crystallized at a low pressure.
辉长岩所具有的辉绿辉长结构、大量细长针状磷灰石、单斜辉石中较低的AlⅥ/AlⅣ(0.00 ~0.28,平均为0.12)及橄榄石中较低的CaO含量(0.04%~0.24%,平均为0.12%),均体现出浅成侵入岩的特点。
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The Pl-lherzolite differs from the cumulates in having blastic texture and high-temperature deformed fabric of Ng[100] characteristic of the mantle peridotite and yielding orthopyroxene.
含长二辉橄榄岩以其具有地幔橄榄岩特有的变晶结构和Ng(100)高温变形组构,以及含斜方辉石等特点而区别于堆晶岩。
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The orogenic strata have following characteristics: During the subduction and intracontinental orogeny, the strata experienced dramatic tectonic migration and mixing, resulting in various tectonic features. A short sequence usually composed of tectonic slices of various origins, times, deformations and metamorphisms, and scales. The original sequence was badly destroyed. The extant fragments of orogenic belt usually took form as melanges, especially the accretion complex wedge generated in subduction zone, which is contrary to the Law of Superposition. The original location of the accretion is also contradicted with the Law of Original Horizonality, because the accretion is oblique with high degree. Marine rocks, volcanic rocks of continental margin and metamorphic rocks were well-developed in the orogenic belt, especially ultra-basic, basic rocks were wide spread and were intensely metamorphosed, accompanied by metamorphic slices returned from hundred kilometers underground with ultra-high pressure and magma movements during syn-orogeny and post-orogeny, thus formed the colorful landscapes.
造山带非史密斯地层构成具如下独特性和复杂性:造山带在俯冲碰撞和陆内造山阶段,发生过强烈的构造搬运和构造混杂,构造形迹多样化,垂直不长的地层体往往是众多不同来源、不同时代,不同变形变质程度,不同大小的各种构造岩片拼贴体,地层原始层序被严重肢解、破坏;尤以产于俯冲带的俯冲增生杂岩楔的原始形成方式与史密斯地层学的&层序叠覆律&老下新上的顺序正好相反,其混杂岩增生方式是老的&片体&在上,新的&片体&阶段性拼贴在老的&增生片体&的斜下方,这种增生片体的原始位置亦与&原始水平律&相悖,即增生片体一般保持较高角度倾斜;在岩石类型和变质程度上,造山带海相和古陆缘火山岩以及变质岩普遍发育,尤其是超基性、基性岩系分布广泛,变质作用较强,伴有从百余公里以下深部超高压变质岩片的折返和同造山期与造山后期岩浆活动,构成极为复杂的地质景观。
- 推荐网络例句
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But we don't care about Battlegrounds.
但我们并不在乎沙场中的显露。
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Ah! don't mention it, the butcher's shop is a horror.
啊!不用提了。提到肉,真是糟透了。
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Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.
Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。