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Polyphase Tectonic Events and Cenozoic Basin-Range Coupling in the Tianshan Belt,Northwestern China

Acta Geologica Sinica(English Edition) 2003年第4期77卷 457-467页

作者： SHULiangshu WANGBo YANGFan LUHuafu j.charvet S.LAURENT-charvet DepartmentofEarthSciencesandStateKeyLaboratoryofMetallization NanjingUniversityNanfingJiangsu210093China InstituteofEarthSciences OrleansUniversity45067OrleansFrance

Studies show that the Tianshan orogenic belt was built in the late stage of the Paleozoic, as evidenced by the Permian red molasses and foreland basins, which are distributed in parallel with the Tianshan belt, indicating that an intense folding and uplifting event took place. During the Triassic, this orogenic belt was strongly eroded, and basins were further developed. Starting from the jurassic, a within-plate regional extension occurred, forming a series of jurassic-Paleogene extensional basins in the peneplaned Tianshan region. Since the Neogene, a collision event between the Indian and the Eurasian plates that took place on the southern side of the Tianshan belt has caused a strong intra-continental orogeny, which is characterized by thrusting and folding. Extremely thick coarse conglomerate and sandy conglomerate of the Xiyu Formation of Neogene System were accumulated unconformably on the Tianshan piedmont. Studies have revealed that the strong compression caused by the Indian-Eurasian collision had a profound influence over the orogenic belt in the hinterland, and MesozoiC-Cenozoic brittle deformed structures superposed on the ductile deformed Paleozoic rocks. The Mesozoic extensional basins were converted into Cenozoic compressional basins. The deformation in the basins is featured by step thrusts and fault-related folds. Statistics of joints show that the principal compressive stress since the Neogene is in a N-S direction. Meanwhile, owing to the underthrusting of the basin toward the orogenic belt, the Paleozoic strata were thrust on the Meso-Cenozoic rocks as tectonic slices, revealing distinct kinematic features in different geologic units. The basin-range coupling zones are characterized by intensive compression, folding and thrusting, accompanied by local sub-E-W-trending strike-slip faults. In the Tianshan region, Cenozoic thrusting is the most common basin-range coupling mode. The folding and faulting of Mesozoic sedimentary rocks, spontaneous com

关键词： intracontinental deformation polyphase deformation structure basin-range coupling Cenozoic Tianshan region

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Experimental analysis of ductile-slip rheology in shallow structural level faults

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Science China Earth Sciences 2001年第6期44卷 481-489页

作者：李本亮舒良树孙岩 M.Faure j.charvet Department of Earth Sciences State Key Laboratory of Mineral Deposits Research Nanjing University Nanjing 210093 China Department of Earth Sciences Orleans University Orleans France

The authors select different grain size samples from granitic body in Weishan, central Hunan, to conduct mylonitization experiments under high temperature (HT) and high pressure (HP), by which the temperature and pressure conditions of mylonitization and microstructures of deformation have been obtained. Through the transmission electron microscopy (TEM) observations of experimental mylonite, we calculate its dislocation density (D), differential rheological stress (Pd) and speed rate of strain (Rs): 3.20x109/cm2, 139.32 MPa and 6.39x10-10/s respectively. The results are in the same magnitude-order with those of natural mylonite from fault zones. By comparison and analysis of chemical compositions and microstructures of different structural environments, the authors establish approximate rheological parameters related to shallow structural level and also suggest the multiple rheological properties and total trend from deep structural level to shallow structural level.

关键词： HT/HP experiment ductile and rheology mylonite mylonite mylonite

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Paleozoic Accretion-Collision Events and Kinematics of Ductile Deformation in the Eastern Part of the Southern-Central Tianshan Belt, China

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Acta Geologica Sinica(English Edition) 2002年第3期76卷 308-323页

作者：舒良树 j.charvet 卢华复 S.C.LAURENT Department of Earth Sciences and State Key Laboratory of Metallization Nanjing University Nanjing 210093 China UMR 6530 CNRS FR009 Departement des Sciences de la Terre Université d'Orléans 45067 Orléans France

The Tianshan range could have been built by both late Early Paleozoicaccretion and Late Paleozoic collision events. The late Early Paleozoic Aqqikkudug-Weiya suture ismarked by Ordovician ophiolitic melange and a Silurian flysch sequence, high-pressure metamorphicrelics, and mylonitized rocks. The Central Tianshan belt could principally be an Ordovician volcanicarc; whereas the South Tianshan belt, a back-arc basin. Macro- and microstructures, along withunconformities, provide some kinematic and chronological constraints on 2-phase ductile *** earlier ductile deformation occurring at ca. 400 Ma was marked by north-verging ductileshearing, yielding granulite-bearing ophiolitic melange blocks and garnet-pyroxene-facies ductiledeformation, and the later deformation, a dextral strike-slip tectonic process, occurred during theLate Carboniferous-Early Permian. Early Carboniferous molasses were deposited unconformably onpre-Carboniferous metamorphic and ductilely sheared rocks, implying the end of the early *** large-scale ductile strike-slip along the Aqqikkudug-Weiya zone was possibly caused by thesecond tectonic event, the Hercynian collision between the northern Tarim block and the southernSiberian block. Late Paleozoic granitic magmatism and superimposed structures overprinted this EarlyPaleozoic deformation belt. Results of geometric and kinematic studies suggest that the primaryframework of the Southern-Central Tianshan belt, at least the eastern part of the Tianshan belt, wasbuilt by these two phases of accretion events.

关键词： kinematics ductile deformation collision-accretion Paleozoic Southern-Central Tianshan belt

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Mesozoic doming extensional tectonics of Wugongshan, South China

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Science China Earth Sciences 1998年第6期41卷 601-608页

作者：舒良树孙岩王德滋 M.Faure P.Monie j.charvet 1. Department of Earth Sciences Nanjlng University 210093 Nanjing China 2. Department des Sciences de la Terre Université d’Orléans Orléans Cedex 2 France 3. Laboratoire de Géochronologie Université de Montpellier CNRS-URA 1763 Montpellier France

Wugongshan in jiangxi Province, China was a Mesozoic granitic dome-type extensional tectonics that is composed of metamorphic core complexes, ductile and brittle shear-deformed zones distributed around Mesozoic granites. Within it, the foliation defines an E-W elliptical shape and bears S-N stretching lineations. The axial part is located in Hongjiang-Wanlongshan area and occupied by oriented granites with coaxial symmetric shear fabrics. The southem and northern flanks, including rocks in the Anfu Basin to the south and the Pingxiang Basin to the north, display top-to-south and top-to-north motions, respectively. The ductile and brittle structures indicate a geometric and kinematic consistency. The extensional tectonics is developed on a Caledonian metamorphic basement and is unconformably covered by Late Cretaceous red beds. Isotopic ages on muscovite, biotite and whole rock by40Ar-39Ar, K-Ar and Rb-Sr suggest that the Wugongshan extensional doming began from the Triassic and ended in the Late Cretaceous. A geodynamic model is discussed.

关键词： extensional tectonics granitic dome kinematic analysis Mesozoic Wugongshan.

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Three evolutionary stages of the collision orogenic deformation in the Middle Yangtze Region

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Science China Earth Sciences 2001年第11期44卷 990-1001页

作者：孙岩舒良树朱文斌郭继春陈祥云 M.Faure j.charvet W.Lin 1. Department of Earth Sciences Nanjing University State Key Laboratory of Mineral Deposits 210093 Nanjing China 2. Geological Survey Institute of jiangxi Province 330201 Nanchang China 3. Department of Earth Sciences Orleans University BP 6759 Orleans France

A discussion of collision orogenic deformation has been made for the Middle Yangtze Region. Based on its deformation assemblage orders, three developing stages are classified successively as compression thrust uplift, strike-slip escape rheology and tension extension inversion. The collision orogenesis of the studied region has been divided into three developing periods of initial, chief and late orogeny. Based on the data from Wugong Mts., jiuling Mts. and Xuefeng Mts.,for each stage, its variation of stress and strain axes, the conversion of joint fractures and their relative tectonic evolution are described, models are plotted and corresponding explanations are made for the rock chronology dating value in the same tectonic period.

关键词： collision orogenesis deformation tectonic evolution the Middle Yangtze Region

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内蒙古北部苏尼特左旗蓝片岩岩石学和年代学研究

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地质科学 2001年第4期36卷 424-434页

作者：徐备 j.charvet 张福勤北京大学地质学系北京100871 Department des Sciences de la Terre Universitéd’ Orléans 中国科学院地质与地球物理研究所北京100101

在苏尼特左旗以南地区的中古生代造山带的混杂岩带内发现了以岩块形式出现的蓝片岩 ,其矿物组合为斜长石 +阳起石 +蓝闪石 +绿帘石 +榍石。蓝片岩化学成分说明由基性火山岩变质而成。矿物化学分析表明 ,蓝片岩中角闪石可分为钙质、钙钠... 详细信息

在苏尼特左旗以南地区的中古生代造山带的混杂岩带内发现了以岩块形式出现的蓝片岩 ,其矿物组合为斜长石 +阳起石 +蓝闪石 +绿帘石 +榍石。蓝片岩化学成分说明由基性火山岩变质而成。矿物化学分析表明 ,蓝片岩中角闪石可分为钙质、钙钠质和钠质 3类。钙质闪石均为阳起石 ,钙钠质闪石为蓝透闪石和冻蓝闪石 ,钠质闪石为蓝闪石和青铝闪石及少量镁钠闪石。利用Na(M4 )和AlⅣ 的含量推测本区钙质、钙钠质和钠质 3类闪石的压力从 0 3～ 0 7Gpa ,表明蓝片岩相变质作用的压力约为 0 7GPa。用化学反应限定蓝片岩的形成温度为 2 0 0～ 3 75℃左右。4 0 Ar 3 9Ar同位素年代学测定蓝闪石的等时线年龄为 3 83± 1 3Ma(1δ)。这些结果进一步证实沿贺根山—苏尼特左旗南是一条中古生代的缝合线 ,其俯冲—碰撞的标志即为混杂岩带以及其中的蓝片岩。

关键词：蓝片岩中古生代造山带内蒙古变质年代岩石学年代学

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新疆博格达南缘后碰撞期陆内裂谷和水下滑塌构造

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岩石学报 2005年第1期21卷 25-36页

作者：舒良树朱文斌王博 M.Faure j.charvet D.Cluzel 南京大学地球科学系南京大学成矿作用国家重点实验室南京210093 奥尔良大学地球科学系

本文较为系统地研究了哈密市七角井-车轱辘泉和乌鲁木齐市白杨沟地区晚古生代后碰撞期陆内裂谷和滑塌构造的几何学、岩石学和地球化学特征。研究表明,在博格达山南缘的七角井-车轱辘泉一带,玄武岩和流纹岩彼此互层产出,构成厚度较大的... 详细信息

本文较为系统地研究了哈密市七角井-车轱辘泉和乌鲁木齐市白杨沟地区晚古生代后碰撞期陆内裂谷和滑塌构造的几何学、岩石学和地球化学特征。研究表明,在博格达山南缘的七角井-车轱辘泉一带,玄武岩和流纹岩彼此互层产出,构成厚度较大的后碰撞期双峰式火山岩系,呈近东西方向平行造山带展布,堆积在早二叠世红色磨拉石之上;在白杨沟一带,后碰撞水下滑塌堆积岩与火山岩共存,构成一个厚1300m的滑塌构造剖面,由水下滑塌堆积岩夹双峰式火山岩带、枕状熔岩-气孔状玄武岩带和硅质、泥砂质岩带所组成。其底部以北东走向的拆离断层和晚石炭世灰岩、砂岩岩层接触。在岩石地球化学特征上,火山岩的SiO2含量在53%-67%之间出现间断,呈现双峰式火山岩的特点。其中,流纹岩SiO2平均71.65%,CaO2.15%,Na2O与K2O含量相近(3.2%-3.7%),含碱量>含钙量,ANKC值>1.1;轻稀土富集、稀土总量高,铕亏损,具明显Eu负异常。与之共生的玄武岩则以富硅贫碱为特征,SiO2平均51.05%,TiO2含量变化较大,轻稀土轻度富集,铕异常不明显,属拉斑系列玄武岩类。其特征和东非阿法尔裂谷的双峰式火山岩相近,反映陆内裂谷环境。对滑塌堆积岩带中的辉绿玢岩作锆石U-Pb测年,获289±5Ma年龄值,相当于二叠纪初期。从晚二迭叠世开始,全区处于相对稳定的剥蚀-堆积环境中,形成了厚度较大的磨拉石,并逐渐演化为三叠纪的准平原化环境。

关键词：双峰式火山岩水下滑塌堆积构造后碰撞作用晚古生代博格达南缘

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武夷山北缘断裂带运动学研究

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高校地质学报 1997年第3期3卷 282-292页

作者：舒良树卢华复 j.charvet M.Faure 南京大学地球科学系法国奥尔良大学地球科学系

华南武夷山北缘边界被绍兴—江山—东乡断裂带所限。该断裂带至少保留了三期构造事件的形迹。第一期发生在８００Ｍａ～９００Ｍａ的晚元古代，呈ＮＷ向ＳＥ的区域推覆韧剪变形运动，以构造混杂岩和区域绿片岩相角闪岩相变质、强烈的... 详细信息

华南武夷山北缘边界被绍兴—江山—东乡断裂带所限。该断裂带至少保留了三期构造事件的形迹。第一期发生在８００Ｍａ～９００Ｍａ的晚元古代，呈ＮＷ向ＳＥ的区域推覆韧剪变形运动，以构造混杂岩和区域绿片岩相角闪岩相变质、强烈的褶皱和韧剪变形为特征，对应于古洋盆关闭、华南复合地体与江南岛弧碰撞焊接过程。第二期发生在４５８Ｍａ～４２１Ｍａ的志留纪，表现为从北向南的韧剪变形运动，伴有左旋走滑韧性剪切，以糜棱岩化和进变质作用为特征，黑云母多变为硅线石。该期变形使第一期构造形迹被强烈迭加置换。其动力学背景与闽东南地体朝武夷山的拼贴增生事件有关。第三期属中生代陆内变形，是一种高构造位的左旋走滑脆性剪切，以岩石的破裂和岩块的水平位移为特征，并具转换拉伸性质，导致中生代火山沉积盆地的形成。

关键词：断裂带运动学武夷山多期构造变形

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浅层断裂韧滑流变的实验分析

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中国科学（D辑） 2000年第5期30卷 519-525页

作者：孙岩舒良树李本亮 M.Faure j.charvet 南京大学地球科学系 Department of Earth Sciences

选取湘中浅层花岗岩和不同颗粒度的岩石进行高温高压糜棱岩成岩实验, 获得其形成的温压条件和微观变形. 再同断裂带中所产生的天然韧滑流变糜棱岩一起做TEM观察测试, 计算出人工糜棱岩位错密度、流变应力和应变速率分别为3.20×109/cm2,... 详细信息

选取湘中浅层花岗岩和不同颗粒度的岩石进行高温高压糜棱岩成岩实验, 获得其形成的温压条件和微观变形. 再同断裂带中所产生的天然韧滑流变糜棱岩一起做TEM观察测试, 计算出人工糜棱岩位错密度、流变应力和应变速率分别为3.20×109/cm2, 139.32 MPa和6.39×10-10s. 这与天然糜棱岩的有关数据基本处于同一数量级. 以此成岩模拟实验为基础, 通过干湿样品实验比较、原岩化学分析以及同法国中央地块、江苏连云港等中深层次糜棱岩的综合分析对比, 初步确定浅层岩石流变变化的有关参数, 也说明了岩石圈垂向深度流变的多重性和总趋向性.

关键词：韧滑流变糜棱岩成岩实验浅层断裂温压条件

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塔里木早古生代活动陆缘与南天山构造演化

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地质学报 2013年第S1期 82-83页

作者：王博舒良树 M.Faure D.Cluzel j.charvet Y.Chen BM jahn 南京大学地球科学与工程学院 Institut des Sciences de la Terre d'Orléans UMR 7427-CNRS/Université d'Orléans 台湾大学地质学系台湾中央研究院地球科学研究所

作为中国三大板块之一的塔里木块体,是中亚巨型造山带的西南边界,在欧亚大陆形成与演化过程中发挥了重要作用。塔里木板块的北缘与南天山构造带相接,其现今的构造格局是古生代洋陆增生和中新生代陆内地壳缩短变形的结果。这一漫长而复...

作为中国三大板块之一的塔里木块体,是中亚巨型造山带的西南边界,在欧亚大陆形成与演化过程中发挥了重要作用。塔里木板块的北缘与南天山构造带相接,其现今的构造格局是古生代洋陆增生和中新生代陆内地壳缩短变形的结果。这一漫长而复杂的多期构造作用过程起始于早古生代古亚洲洋构造域的演化。

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