Study of thrust and nappe tectonics in the eastern Jiaodong Peninsula, China

来源 :Science in China(Series D:Earth Sciences) | 被引量 : 0次 | 上传用户:zhangyananqd
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Thrust and nappe tectonics have affected the eastern Jiaodong Peninsula, the easternmost terminal of the Sulu Ultra-high Pressure Metamorphic Belt. Four nappes have been mapped, named respectively the Shidao, Rongcheng, Mishan and Mouping nappes. The methods used included multi-scale struc- tural analysis and structural chronology analysis. These nappes define four deep level slip-thrust shear zones that were mainly active in the Mesozoic. The amount of ductile deformation decreases from the Shidao to Rongcheng to Mouping to Mishan shear zones, and shows an inverse relationship with temperature. 40Ar/39Ar chronological analysis and the chronological results of former workers reveal four movement steps defined by the development of thrusts and nappes in the late Triassic (210-180 Ma), extensional movement from the Jurassic to early Cretaceous (180-130 Ma), slip-thrust movement in the Early Cretaceous (130-120 Ma), and extensional movement since the Late Cretaceous (120 Ma). The order of boundary shear zone motion in the period of slip-thrust movement during the Early Cre- taceous (130-120 Ma) was along the Shidao, Rongcheng, Mouping and finally the Mishan shear zone. This resulted in clockwise rotation of the nappes relative to block west to the Tan-Lu Faults. Because of the similar evolutionary history of the Tan-Lu Faults and the thrust and nappe structure in the eastern Jiaodong Peninsula, slip dislocation along the Tan-Lu Faults might have been absorbed by thrust and nappe tectonics in the Jiaodong area in the Mesozoic era, resulting in much less dislocation on the Tan-Lu faults in North Eastern China than that in south along the Jiaodong Peninsula.
其他文献
实验与临床研究表明:肝素可抑制限内成纤维细胞的生成,减少晶体囊外摘除术后眼内组织表面纤维蛋白的沉积和后囊细胞的生长,而抑制后发障的形成。但肝素是否会损害角膜内皮细胞,迄
The polycrystalline EPR spectra of three cubane-type tetranuclear molybdenum cluster compounds Mo4S4(μ-OAc)2(dtp)4(1), Mo4S4(μ-OAc)2(dtp)4-·H (2), Mo4OS3(μ
从党的十四届五中全会通过的《建议》,到八届全国人大四次会议通过的《纲要》,都把处理好东西部地区的关系作为今后15年国民经济和社会发展的重要方针之一,并制定了一系列促
在二十一世纪这个新兴时代中,科学技术的发展也是日新月异.近些年来,智能型机械自动化技术发展迅猛.它推动了我国高新技术及其产业的发展,促进了国民经济的上升,随着智能型机
目的体外观察温州地区儿童幽门螺杆菌(Hp)菌株对临床常用8种抗生素的耐药性及其与细胞毒素相关蛋白(CagA)的关系。方法对分离的的41株Hp行药物敏感试验,并用免疫印迹法检测患儿血清Cag,a抗体。结果CagA阳性Hp菌株中替硝唑、克拉霉素、呋喃唑酮、羟氨苄青霉素、阿齐霉素、庆大霉素、诺氟沙星和头孢哌酮耐药菌株分别为100.0%、55.6%、48.3%、38.7%、32.3%、32.3%、25.8
目的:建立利用薄层色谱方法控制双料喉风散质量。方法:在不同温度条件下,利用薄层色谱法对双料喉风散中甘草、山豆根、黄连、青黛、人工牛黄等药材进行定性鉴别。结果:在最适
<正>二十二、鸿雁舒翅1.右脚向左脚后方插步的同时,右掌从小指开始依次屈指并屈腕向右腋下插掌,沿胁肋向腰部下插,掌背贴于右腰部,指尖朝下;左掌随左臂外旋向左前方弧形摆掌,
期刊
先证者男,10岁.因走路困难来院就诊.查体:智力及语言正常,双手只有拇指、无名指、小指,右手无名指与小指并指.双脚只有拇趾,其余四指并趾.染色体检查正常.根据上述体征诊断为先天性指(趾)畸形.家系调查:3代中有3人发病,分别是先证者和其外祖父、表妹,其外祖父左手食指和中指并指,其表妹左手无名指指尖裂指。
目的:获取含羞草、铁树叶、铁树花、飞机草、菠萝蜜叶、马齿苋、芦荟、苦楝、芒果叶、九里香、鸡屎藤、白花菜、积雪草、落地生根、番石榴叶、黄皮叶、木耳菜、鸡蛋树皮、紫
讨论了各类相变中的界面分类.重构型相变没有共格界面,相变产物形状也无系统性变化.位移型相变有完全共格或部份共格的界面,有可见的相变产物形状变化.完全共格界面出现在无成分变