交代

The upper layer, with homogeneous composition, is mainly composed of intact phosphatic foraminifer fossils and nannofossils as well as abiotic carbonate fluorapatites, representing the biologic and autogenic origin. However, the lower layer, with visible metasomatic texture and relatively high Si, Al, K and Fe, is notably different from the upper one, and seems to have been formed mainly by replacement of carbonates.

上层磷酸盐由大量形态结构清楚的磷酸质有孔虫和超微化石以及非生物碳氟磷灰石组成，成分均一，杂质少，表现出生物成因和原生白沉积特点；下层磷酸盐变化复杂，具有特征的交代结构，混杂较高的Si、Al、K、Fe成分，显示以磷酸盐交代碳酸盐成因为主。

It is concluded that microcrystalline silicate and magnetite show characteristics of liquation in the back-scattered electron image.

本文研究认为，硅酸盐矿物与磁铁矿在背散射电子图像中表现为熔离特征，这种在透光显微镜下呈黑色不透明的微晶固体，是引发交代蚀变、具熔浆流体特点和超临界流体性质的地幔流体交代作用的一种微观表现。

This evidence indicates the occurrence of strong mantle metasomatism in the area.

提出该地区可能发生过强烈的地幔交代作用，地幔交代作用在上部形成富集地幔，在下部形成极度亏损地幔。

Based on field work in fourteen typical ore districts of China, the author made experiments on contact metasomatism of ultrabasic-acid intrusive rocks with carbonate rocks, interaction between volcanic pneumatolyto-hydrothermal solution and volcanic rocks, and metasomatism in the process of sedimentary metamorphism and migmatizatiun.

本文作者在全国14个典型矿区的野外工作基础上，进行了超基性-酸性侵入岩与碳酸盐岩的接触交代实验；火山气热液与火山岩的相互交代实验；区域沉积变质和混合岩化过程中的交代作用实验。

The mantle metasomatism in western Shandong could be subdivided into two stages, i.e. early metasomatic event with interstitial phlogopite and late metasomatic event with orthopyroxene vein or orthopyroxene+phlogopite vein.

鲁西区地幔交代作用应有两期，即早期的填隙型金云母和晚期的斜方辉石脉或斜方辉石+金云母脉体的形成，早期交代介质为富含CO〓和H〓O的熔体，晚期交代介质为富硅质的熔体。

Is around ore shoots to be distribute with symmetry, that show the block and brecciated ores of the Tongmugou zinc deposit are fluid metasomatic reformed deposit.

后生流体交代岩（主要由透闪石、绿帘石、透辉石、黑云母、石英、绿泥石等矿物组成）显著受层间断层控制，它是流体交代原热水沉积层和热水沉积闪锌矿纹层而形成的，该矿床为热水沉积-流体交代改造矿床。

The conception of metasomatic system is put forward here.

提出了交代体系的概念，并运用了交代系列和交代建造的学术思想。

Alkali-metasomatic processes can be divided into 3 stages: alkali-metasomatic stage, neutral metasomatic stage and acidic metasomatic stage.

通过研究认识到：碱交代蚀变系列可分为碱交代、中性交代和酸交代三个阶段，其中的碱交代和中性交代形成浸出场，酸交代阶段则形成沉淀场。

From the fields of regional crust-mantle structure, metallogentic settings, history of tectonic-magmatic activity, distribution of high antimony anomaly, characteristics of deposit, origin of ore-forming materials (including Sb, C, Si, S, solution and associated elements), black dikes, the relation of deposit and mantle metasomatism fluid is expounded by means of geology and geophysics. Xikuangshan antimony deposit is proved to be a typical vein deposit formed by mantle metasomatism fluid. On the basis of this knowledge, the prospecting criteria of blind orebody of the deposit are given as follows: extensive structuer which indicating the activities of mantle metasomatism fluid, change of host rocks (especially exsisting shale barrier bed), silication and carbonization alteration.

文中对地幔交代流体组成、性质、活动特点及其成岩、成矿作用作了综述与探讨；从锡矿山区域壳幔结构和成矿背景、地质构造-岩浆活动史、高锑地球化学场结构分析、矿床特征、成矿物质(包括Sb、C、Si、S、流体及伴生元素)、与成矿有时空联系的暗色脉岩等方面入手，利用地质、地球物理、地球化学手段多方面论述了矿床与地幔交代流体活动的关系，论证了锡矿山超大型锑矿的地幔交代流体成因，并以此为基础提出盲矿体地质找矿标志：即指示地幔交代流体活动的构造，尤其是具有成矿元素和碱质异常、热液蚀变的断裂构造；有利的岩石物理化学性质；硅化、碳酸盐化围岩蚀变等。

The crystal constant of α has a range from 0.932 nm to 0.933 nm with an average of 0.933 nm. Various replacement and remnant structures show that the phosphorates in submarine guyots are mainly of replacement origin.

各种交代残余结构（交代角砾状结构、交代生物结构、交代凝灰结构、交代生物假象结构、交代填间结构等）表明，太平洋水下海山上的磷酸盐主要属交代成因。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。