变质岩

Major conclutions from this study can be summarized as following:1. On mineralogy, rutiles, apatites, epidotes and vein minerals from UHPM rocks were firstly and systematically studied, by detailed petrography and mineral-chemistry investigation, some mineral or mineral assemblage with special composions or texture were firstly found in UHPM rocks from Sulu-Dabie, for example, corrudum, magnesite, high-Ti biotite and garnet were found as inclusions in rutiles from eclogites, Nb-Fe rutile and zoned Si-Y apatite were found in gneiss, epidote / allanite with euhedral zones like magmatic genesis were found in elogites and gneiss, a lot of minerals with high REE, HFSE, LILE and volatiles were found in veins of gneiss.

在矿物学方面，首次较为系统地研究了超高压变质岩中的金红石、磷灰石、绿帘石等副矿物，并通过详细的岩相学和矿物化学研究，首次在苏鲁-大别超高压变质岩中发现了一些具有特殊成分/结构的矿物或矿物组合，如在榴辉岩金红石中发现了刚玉、菱镁矿、高钛黑云母和石榴石矿物包裹体，在片麻岩中发现了Nb-Fe金红石和具有自形环带结构的高Si-Y磷灰石，在榴辉岩和片麻岩中发现了具有类似岩浆成因的自形生长环带结构的绿帘石/褐帘石，在片麻岩的脉体中发现了大量富含稀土元素REE、高场强元素HFSE(Nb、Ta、Zr、Ti)、大离子亲石元素LILE(K、Th、U、Sr、Ba)，以及挥发性组份(CO_2、F、P、S)的特殊矿物，丰富并提升了超高压变质岩的矿物学研究。2。

The garnets in Cretaceous sandstones come from blueschist that located in the southwest Tianshan and low-grade metamorphic rocks by lager proportionally. The garnets in Tertiary sandstones enrich almandine, which come from high-grade metamorphic rocks.

白垩系砂岩中的石榴石来自西南大山蓝片岩和低级变质岩的比例较大，而第三系砂岩中的石榴石中富铁铝榴石组分，多来自高级变质岩。

It's considered that seismic velocity of metamorphic rock is related to metamorphic type and strength, density, lithology and geologic structure, at the same time, intense foliation structure and interlayer of rocks different in velocity make seismic velocity present obvious anisotropy and transverse imhomogeneity.

研究认为，变质岩的地震波速度与变质作用类型和强度、岩石密度、岩性及构造有关，同时由于该区超高压变质岩的面状构造发育，而且不同地震波速度的岩石在空间上表现出明显的迭置关系，因此地震波速度呈现出显著的各向异性和横向不均匀性。

The leucogranites veins occurred widespreadly in the para-metamorphic rocks, in which the hypersthene melagranulite distributed. That suggests the source rocks of leucogranites of the High Himalaya are para-metamorphic rocks. For the basement was uplifting, pressure relieved and lacked water, source rocks were melting partly and formed the leucogranite magma.

基底副变质岩中广泛分布淡色花岗岩脉体，在基底副变质岩中的淡色花岗岩脉体中发现紫苏辉石暗色麻粒岩残留体，这表明本区高喜马拉雅淡色花岗岩源岩为基底副变质岩，且基底副变质岩是在基底快速隆升降压的条件下发生缺水熔融生成的淡色花岗岩岩浆。

Based on analyzing constitute peculiarity and graduation of intermediately and highly weathered metamorphic rock of mica sort, the paper presents compaction characteristic, water stability, strength performance of this material and draws the conclusion that bearing capacity must be improved through changing the material nature.

摘要在分析云母类中高级变质岩风化料组成特性和级配的基础上，通过试验得到了云母类中高级变质岩风化料的击实特性、水稳定性、强度特性和必须通过改性才能提高此类风化料承载力的结论。

Besides the metamorphic rocks induced by contact metamorphism , the rest of metamorphic rocks in this area are caused by regional metamorphism

除了上述所说的由接触变质作用而形成的变质岩外，本区其它的变质岩都是由区域变质作用而形成的。

Ma,and lithosphere delamination and thermal exhumation during 196～163?Ma.The rapid thermal exhumation,co\|occurred with extensive regional metamorphism and intermediate\|acidic magmatism,implied that the subducted slabs had broken off and delaminated.The p T t path of UHPM consists of two curves,i.e.,a barrette\|like curve reflecting the process of cold slab subduction and exhumation,and a crescent curve representing the thermal exhumation after slab breakoff.

通过全面评述该区变质岩研究成果，作者认为：超高压变质岩的形成和剥露经历了240～200 Ma的板片冷俯冲冷折返和196～163 Ma的岩石圈拆沉热折返；热折返伴随了广泛而强烈的区域变质作用和中酸性岩浆活动，指示板片断离拆沉的发生；超高压变质岩p-T-t轨迹由两部分组成，即反映板片冷俯冲冷折返过程的发夹状曲线和指示板片断离拆沉热折返过程的新月形曲线。

Generally speaking, the regional metamorphic rocks in this area can be divided into two groups, foliated and nonfoliated metamorphic rocks.

总的来说，这一地区的区域变质岩可以归为两大类，一类是具面理的区域变质岩，另一类是不具而理的区域变质岩。

We think main metamorphic rock types of this area include mited granite ,mixed metamorphic rock,leptite,etc.

认为变质岩中混合花岗岩、混合岩化变质岩、变粒岩、浅粒岩、黑云斜长片麻岩等为本区的主要变质岩类型；沉积岩以云岩、硅质岩和石英砂岩为主；火成岩脉主要为辉绿岩、煌斑岩和闪长玢岩。

The high-grade metamorphic terrain of Hengshan located at the hinderland of North China Carton in northern part of Shanxi province, China, is a middle-lower crustal transition area of the typical continental crustal profiles of the Wutaishan—Hengshan—Datong—Jining of the early Precambrian etamorphic terrain in China.The Hengshan gneisses of the amphibolite—granulite facieses metamorphic terrain consist of the TTG gneisses and the horizontal adding mantle materials. The Supracrustal rocks in this area are composed of the mafic volcanic rocks and sedimentary rocks. The plenty of granitoid magma activities are the result of anatexes.

中文题名恒山中深变质岩区构造样式副题名外文题名 Tectonic styles of the high-grade metamorphic terrain of Hengshan 论文作者苗培森导师宋鸿林教授学科专业构造地质学研究领域\研究方向学位级别博士学位授予单位中国地质大学学位授予日期2001 论文页码总数88页关键词中深变质岩区构造地质恒山区域构造地质馆藏号BSLW /2003 /P548 /4 位于华北克拉通近中部的恒山中深变质岩区，亦即恒山高级变质岩区，是从五台山—恒山—大同—内蒙集宁这一浅变质岩区至中深变质岩区的我国早前寒武纪典型大陆地壳剖面代表中下地壳过渡带的地区。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。