( 4 ) it is the largest area of the danxia landfonn of the northwest of the yunnan province in china . there are three landscape areas include liming scenery spot , luoguqing scenery spot and shibaoshan scenery spot . it takes three scenery spots as a action research for analysis of the zig - zag pattern caused by joints , weathering , tectonic activity and magma activity 第四，针对中国最大的丹霞地貌分布区?滇西北，以黎明黎光、罗古箐、石宝山丹霞地貌景区进行实证研究，初步分析了滇西北丹霞地貌发育的特点?大面积的龟裂现象主要由两组节理和风化作用形成的，构造、岩浆活动也对龟裂的形成起了一定作用。
The stratums containing mine , tectonic - hydro thermally process , magma activity , alteration react to district mineralization in degrees . the belt of granite facies , the inside and outside contact belt of rock body , the joining belt of tectonic - hydro thermally superimposed , the stratum belt of unconformity contact are the main enrichment belt 含矿地层及矿源层、构造-热液作用、岩浆活动、变质作用都在不同程度上对区域成矿起作用，而花岗岩相变化带、岩体内外接触带、构造?热液叠加交汇带、地层不整合接触带则为金矿化主要富集带。
The yanshan - liaoning area is called as the " cradle of geology " . it is the first time that the geologist , wen wenghao , has put forward the " yanshan movement " before 70 years . from then on the yanshan - liaoning area had been paying attention by the geologists all over the word because it lies in the particular tectonic background , has the complex structural features , structural units , and the geological history of evolution , particularly large - scale , multi - phrase tectonic movement and magmatic activity took place in the short geological time 燕辽地区素有地质“摇篮”之称，自翁文灏在70余年前提出yenshanmovement (燕山运动)以来，它以其独特的大地构造位置、复杂的构造特征、组成及其演化过程，特别是该地区在很短的时间间隔内发生了大规模、多幕式构造?岩浆活动，更引起世界地学界的极大关注。
Lithosphere delamination is an important way for compositional and structural evolution of collisional orogens . geotectonic research , geophysical survey and geochemical analysis have revealed that the lithosphere of east qinling - dabie mountains had delaminated intensively in mesozoic . however , the extensive mesozoic metamorphism and magmatism have been weakly related to lithosphere delamination 构造地质研究地球物理探测和地球化学分析等都已揭示东秦岭-大别造山带曾在中生代发生岩石圈拆沉，但有关中生代变质作用和岩浆活动与岩石圈拆沉的内在联系研究却较为薄弱。
It is very important that the understanding of regional metallogenic rules should be emphasized and the thinking of exploration and research opened up . in this thesis , mainly metallogenic types , tectonic setting , space - time distributions and the ore - controlling and metallogenic conditions for copper ore deposits in gansu province are studied on based inducing past formation which basic theories and methods of the modern geology , mineral deposits and related learning are applied and a serious of formation synthesized throughout depending on guide of regional . - metallogenic theories . a rule of development , enrichment and regional metallogeny would be preliminary summaries in terms of analyzing mineral prospecting for gansu ' s copper , gold and polymetallic minerals , and the relation between the indosinian - yanshan structural - magmatic activities is studied and exploration prospect and positions analyzed as well as a new countermeasure and thinking about research for minerals in this area be suggested 本论文在总结、分析前人成果资料基础上，以区域成矿学理论为指导，运用现代地质学、矿床学及相关专业、学科的基本理论与方法，综合多种成矿信息，对甘肃省铜矿主要成矿类型及其成矿地质构造背景、时空分布特征与主要控(成)矿条件进行了研究；从矿产勘查的角度，初步总结了甘肃铜、金及多金属矿产的发育、富集与区域成矿规律；探讨了印支-燕山期构造-岩浆活动与大型-超大型铜矿床的形成关系；研究分析了甘肃铜矿资源的勘查前景与找矿方向，提出了该区矿产勘查研究新思路。
Based on a comprehensive review on research results of metamorphic rocks , the authors argue that the formation and exhumation of uhpm ultra - high pressure metamorphite experienced two stages , i . e . , cold slab subduction and exhumation during 240200ma , and lithosphere delamination and thermal exhumation during 196163ma . 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 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240200ma的板片冷俯冲冷折返和196163ma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
After the volcanic eruption of multi - phrase cycle - deformation , filling of basin , crustal uplifting event being studied , this dissertation tries constructing the different degree rhythm of magma activity corresponding with crust - mantle dynamic system , studying the crust - mantle deep processes . based on the studies on the characteristics of volcanic rhythm , igneous rocks assemblages , temporal and spatial distribution of igneous rocks , tectonic deformation , the author has util ized the methods of petrology , geochemistry , isotopic geology et al . to do research on the above - mentioned geological problems 通过多次幕式火山喷发-构造变形-盆地充填-地壳隆升事件序列的厘定，从火山活动节律特征、火成岩构造组合类型、时空分布及其演化和构造变形的历史记录，利用岩石学、地球化学、同位素地质学等方法，反演深部过程与浅部响应等来阐明造山过程，建立与不同级别岩浆活动节律对应的壳幔动力学系统，追索壳幔深部过程，已成为当今地球动力学研究的前沿课题之一。
Based on the theory of plate tectonics and the new knowledge of continental dynamics , this paper starts mostly with tectonic analysis and then makes a comprehensive view on the characteristic of stratum composition , gold mine mineralized , magmatic activity as well as ruptures activity to discuss the yanshanian tectonic evolution of the xiaoqinling area under the regional tectonic framework of qinling orogenic belt 本文以板块构造理论和大陆动力学研究的新认识为指导，采用以构造分析为主线，结合区内地层沉积、金矿成矿、岩浆活动以及南北两侧断陷盆地形成演化等综合分析，在秦岭区域构造大框架下对小秦岭燕山期的构造演化特征进行探讨。
The north - eastern structural zones which become intensity from the western part to the eastern one in gansu show a influence of marginal - west pacific indosinian - yanshan tectonic - magmatic belt on the western part of china ' s continent , and not only a important regional metallization had developed but also early - formed minerals were intense changed and enriched with the tectonic - magmatic activity 甘肃境内由西向东增强的北东向构造带，是我国东部滨西太平洋印支-燕山期构造岩浆活动带向大陆西部的延伸表现；伴随该期构造-岩浆活动，区内发生了重要的区域性成矿作用，并使处于该期构造活动带的先期金属矿产遭受了较强的叠加与再生改造。
( 7 ) showing and determining the evidence and timing of the lithophere delamination occurred in qinling orogenic belt . pointing out the gold deposit in xiaoqinling - xiongershan region are mostly formed during indosinian to early - yanshan movement , related to mantle fluid injecting caused by lithosphere delamination and plutonic activity caused by further large - scale tectonic extension 初步阐述了东秦岭地区的成矿分区和成矿特点，指出小秦岭一熊耳山地区金矿形成的主要时期是印支一早燕山期，并且与岩石圈拆沉作用所引起的地慢流体活动和之后进一步大规模伸展作用产生的深源岩浆活动密切相关。
