期刊文献+
共找到37篇文章
< 1 2 >
每页显示 20 50 100
中国及邻区中新生代大型大陆扩张盆地及其造山作用
1
作者 郭福祥 《广西地质》 1996年第1期1-16,共16页
中国及邻区中新生代大型大陆扩张盆地格外发育,成为中新生代特提斯大地构造域和北西太平洋大地构造域极其醒目的大地构造特点。这些盆地是印度板块、库拉—太平洋板块与欧亚板块大抵同时相互作用的产物,分别属于两个大地构造域,可分为... 中国及邻区中新生代大型大陆扩张盆地格外发育,成为中新生代特提斯大地构造域和北西太平洋大地构造域极其醒目的大地构造特点。这些盆地是印度板块、库拉—太平洋板块与欧亚板块大抵同时相互作用的产物,分别属于两个大地构造域,可分为西部盆地(特提斯构造域盆地)和东部盆地(北西太平洋构造域盆地)。盆地发育与相邻相关大洋板块俯冲机制启动密切相关。换句话说:盆地发育标志着中新生代特提斯构造域、北西太平洋构造域俯冲机制的形成。盆地发育是活动大陆边缘型大陆活动带重要演化内容之一。 展开更多
关键词 中新代 大陆 扩张盆地 造山作用
下载PDF
华南中新生代板块构造
2
作者 杨超群 《南海研究与开发》 1994年第2期61-61,共1页
关键词 板块构造 中新代 华南
下载PDF
南海及邻域中、新生代盆地类型与油气资源关系探讨 被引量:16
3
作者 杜德莉 曾维军 吴能友 《地质论评》 CAS CSCD 北大核心 1998年第6期580-589,共10页
在南海区域地质构造特征及周缘盆地发育特点的基础上,根据盆地分类的理论,试将南海及周缘的35个中、新生代盆地,划分为两型十一类。各主要盆地的油气地质特点表明,不同类型的盆地,其油气远景不同。分析认为,在板内拉张离散环境中所形成... 在南海区域地质构造特征及周缘盆地发育特点的基础上,根据盆地分类的理论,试将南海及周缘的35个中、新生代盆地,划分为两型十一类。各主要盆地的油气地质特点表明,不同类型的盆地,其油气远景不同。分析认为,在板内拉张离散环境中所形成的盆地,含油气远景最佳,是目前勘探和开发的重点。 展开更多
关键词 南海 盆地类型 油气远景 新生 中新代 油气藏
下载PDF
松南及南部邻区壳幔结构与中、新生代盆地形成
4
作者 程日辉 王东坡 廖兴明 《勘探家(石油与天然气)》 1999年第4期7-9,共3页
在松南及南部邻区岩石圈中存在电性高导层,分布在壳内和幔内。高导层反应出岩石圈中拆离面、滑脱面以及流变塑性带的特性,也揭示出本区大陆壳幔结构。壳幔结构在本区不同地点的差异反映出深部软流圈、岩石圈和地壳的运动、演变过程。这... 在松南及南部邻区岩石圈中存在电性高导层,分布在壳内和幔内。高导层反应出岩石圈中拆离面、滑脱面以及流变塑性带的特性,也揭示出本区大陆壳幔结构。壳幔结构在本区不同地点的差异反映出深部软流圈、岩石圈和地壳的运动、演变过程。这一深部过程是本区中、新生代盆地形成的直接动力。 展开更多
关键词 松辽盆地南部 壳幔结构 盆地形成 新生 中新代
下载PDF
励精图治为人先——记福建新代实业有限公司
5
作者 静石 《文体用品与科技》 2006年第4期40-41,共2页
在中国学生用品品牌中,西瓜太郎无人不知,在中国文具行业中新代公司更是鼎鼎大名。经过十几年、几代人的努力,一个行业龙头企业傲然屹立在神州大地。它走过艰辛、走过泥泞,如今的西瓜太郎品牌已然是中国驰名商标、福建省著名商标、... 在中国学生用品品牌中,西瓜太郎无人不知,在中国文具行业中新代公司更是鼎鼎大名。经过十几年、几代人的努力,一个行业龙头企业傲然屹立在神州大地。它走过艰辛、走过泥泞,如今的西瓜太郎品牌已然是中国驰名商标、福建省著名商标、福建名牌产品、十大文具品牌,集众多荣誉于一身,不过这正是对他们十几年辛勤努力的回报。 展开更多
关键词 有限公司 福建省 中新代 文具行业 学生用品 龙头企业 名牌产品 品牌 中国 西瓜
下载PDF
Early metabolism evaluation making traditional Chinese medicine effective and safe therapeutics 被引量:6
6
作者 刘勇 杨凌 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2006年第2期99-106,共8页
Increasing attention is being paid to the scientific evaluation of traditional Chinese medicine (TCM). As many TCMs are capable of biotransformation in the gastrointestinal tract, attention to biotransforrnation of ... Increasing attention is being paid to the scientific evaluation of traditional Chinese medicine (TCM). As many TCMs are capable of biotransformation in the gastrointestinal tract, attention to biotransforrnation of TCM in the gastrointestinal tract may lead to discovery of the active components and active mechanisms. In this article, we review reports that host metabolic enzymes and intestinal bacteria may be responsible for the metabolism of TCM. Good understanding of the in vivo course of TCM will help us to know how to conduct metabolism evaluation of TCM by using in vitro human-derived system. This evaluation system will create new views on TCM as effective and safe therapeutic agents. 展开更多
关键词 Traditional Chinese medicine (TCM) METABOLISM Gastrointestinal biotransformation
下载PDF
Effect of a counseling-supported treatment with the Mediterranean diet and physical activity on the severity of the non-alcoholic fatty liver disease 被引量:9
7
作者 Chiara Gelli Mirko Tarocchi +3 位作者 Ludovico Abenavoli Laura Di Renzo Andrea Galli Antonino De Lorenzo 《World Journal of Gastroenterology》 SCIE CAS 2017年第17期3150-3162,共13页
AIM To determine the clinical effectiveness of nutritional counseling on reduction of non-alcoholic fatty liver disease(NAFLD) severity, weight loss, metabolic and anthropometric indexes and liver enzymes.METHODS Fort... AIM To determine the clinical effectiveness of nutritional counseling on reduction of non-alcoholic fatty liver disease(NAFLD) severity, weight loss, metabolic and anthropometric indexes and liver enzymes.METHODS Forty-six adults with NAFLD received a 6-mo clinical and a dietary intervention(based on Mediterranean diet) carried out respectively by a gastroenterologist and a nutritionist with counseling license. The counseling process consisted of monthly meeting(about 45 min each). The effect of the treatment was evaluated monitoring liver enzymes, metabolic parameters, cardiovascular risk indexes, NAFLD severity [assessed by ultrasound(US)] and related indexes. All parameters were assessed at baseline. Biochemistry was also assessed at mid-and end-interventions and US was repeated at end-intervention.RESULTS The percentage of patients with steatosis grade equal or higher than 2 was reduced from 93% to 48% and steatosis regressed in 9 patients(20%). At the end of the treatment the end-point concerning the weight(i.e., a 7% weight reduction or achievement/maintenance of normal weight) was accomplished by 25 out of 46 patients(i.e., 54.3%). As far as the liver enzymes is concerned, all three liver enzymes significantly decrease during the treatment the normalization was particularly evident for the ALT enzyme(altered values reduced from 67% down to 11%). Several parameters, i.e., BMI, waist circumference, waist-to-hip ratio, AST, ALT, GGT, HDL, serum glucose, Tot-Chol/HDL, LDL/HDL, TG/HDL, AIP, HOMA, FLI, Kotronen index, VAI, NAFLD liver fat score and LAP, showed a significant improvement(P < 0.01) between baseline and end-treatment.CONCLUSION Outcomes of this study further strengthen the hypothesis that Med Diet and more active lifestyle can be considered a safe therapeutic approach for reducing risk and severity of NAFLD and related disease states. The proposed approach may be proposed as a valid and recommended approach for improving the clinical profile of NAFLD patients. 展开更多
关键词 Non-alcoholic fatty liver disease Non-alcoholic steatohepatitis Mediterranean diet Metabolic syndrome Therapeutic approach COUNSELING DIET LIFE-STYLE
下载PDF
Metabolic and Phylogenetic Profile of Bacterial Community in Guishan Coastal Water(Pearl River Estuary), South China Sea 被引量:4
8
作者 HU Xiaojuan LIU Qing +4 位作者 LI Zhuojia HE Zhili GONG Yingxue CAO Yucheng YANG Yufeng 《Journal of Ocean University of China》 SCIE CAS 2014年第5期857-864,共8页
Characteristics of a microbial community are important as they indicate the status of aquatic ecosystems. In the present study, the metabolic and phylogenetic profile of the bacterioplankton community in Guishan coast... Characteristics of a microbial community are important as they indicate the status of aquatic ecosystems. In the present study, the metabolic and phylogenetic profile of the bacterioplankton community in Guishan coastal water(Pearl River Estuary), South China Sea, at 12 sites(S1–S12) were explored by community-level physiological profiling(CLPP) with BIOLOG Eco-plate and denaturing gradient gel electrophoresis(DGGE). Our results showed that the core mariculture area(S6, S7 and S8) and the sites associating with human activity and sewage discharge(S11 and S12) had higher microbial metabolic capability and bacterial community diversity than others(S1–5, S9–10). Especially, the diversity index of S11 and S12 calculated from both CLPP and DGGE data(H >3.2) was higher than that of others as sewage discharge may increase water nitrogen and phosphorus nutrient. The bacterial community structure of S6, S8, S11 and S12 was greatly influenced by total phosphorous, salinity and total nitrogen. Based on DGGE fingerprinting, proteobacteria, especially γ- and α-proteobacteria, were found dominant at all sites. In conclusion, the aquaculture area and wharf had high microbial metabolic capability. The structure and composition of bacterial community were closely related to the level of phosphorus, salinity and nitrogen. 展开更多
关键词 Microbial community environmental factor MARICULTURE CLPP DGGE
下载PDF
Crust Shortening of the Daliangshan Tectonic Zone in the Cenozoic Era and Its Implications
9
作者 Chen Changyun He Honglin 《Earthquake Research in China》 2009年第1期68-77,共10页
The Daliangshan tectonic zone is a rhombic area to the east of the Anninghe and Zemuhe fault zones in the middle segment of the Xianshuihe-Xiaojiang fault system along the southeast margin of the Qinghai-Xizang (Tibe... The Daliangshan tectonic zone is a rhombic area to the east of the Anninghe and Zemuhe fault zones in the middle segment of the Xianshuihe-Xiaojiang fault system along the southeast margin of the Qinghai-Xizang (Tibet) Plateau. Since the Cenozoic era, the neotectonic deformation in the Daliangshan tectonic zone has presented not only sinistral slip and reverse faulting along the Daliangshan fault zone, but also proximate SN-trending crust shortening. It is estimated that the average crust shortening in the Daliangshan tectonic zone is 10.9 ± 1.6 km, with a shortening rate of 17.8 ± 2.2% using the method of balanced cross-sections. The crust shortening from folding occurred mainly in the Miocene and the Pliocene periods, lasting no more than 8.6 Ma. Based on this, a crust shortening velocity of 1.3 ± 0.2 mm/a can be estimated. Compared with the left offset along the Daliangshan fault zone, it is recognized that crust shortening by folding plays an important part in transferring crustal deformation southeastward along the Xianshulhe-Xiaojiang fault system. 展开更多
关键词 Daliangshan tectonic zone Crust shortening Tectonic deformation Qinghai-Xizang (Tibet) Plateau
下载PDF
Meso-Cenozoic basin evolution in northern Korean Peninsula
10
作者 PAK Hyon Uk LYANG To Jun +2 位作者 LIU Yongjiang HYON Yun Su KIM Gyong Chol 《Global Geology》 2009年第2期80-86,共7页
In the Korean Peninsula the Meso-Cenozoic basins were mainly formed due to fault block and block movement. The Mesozoic fracture structures correspond basically to modem large rivers in direction. Such faults were usu... In the Korean Peninsula the Meso-Cenozoic basins were mainly formed due to fault block and block movement. The Mesozoic fracture structures correspond basically to modem large rivers in direction. Such faults were usually developed to rift and formed lake-type tectonic basin, such as the Amrokgang-, Taedonggang-, Ryesonggang-, Hochongang-, Jangphari-, Susongchon-, Pujon-, and Nampho basins. The Mesozoic strata are considered to be divided into the Lower Jurassic Taedong System, Upper Jurassic Jasong System, Upper Jurassic-early Lower Cretaceous Taebo System, and the Upper Cretaceous-Paleocene ( Chonjaebong, Hongwon, Jaedok Series). The Cenozoic block movement succeeded the Mesozoic fault block movement. The Kilju-Myongchon Graben and Tumangang Basin, etc, are the basins related to the fault zones developed from the Oligocene to Miocene. In addition, the Tertiary basins were formed in many areas in the Miocene (e. g. Sinhung, Oro, Hamhung, Yonghung, Anbyon, Cholwon, etc). The Cenozoic sedimentation occurred mainly from the late Oligocene to Miocene. The Kilju-Myongchon Graben was the fore deep connected to the sea and the basins inclined in the Chugaryong Fault Zone are intramountain basins. Therefore, coal-beating beds and clastic rocks in the intramountain basins and rare marine strata and terrigenous clastic rocks are main sedimentary sequences in the Cenozoic. 展开更多
关键词 Korean Peninsula Meso-Cenozoic basins tectonic movement
下载PDF
Jade Huang and Chinese Culture Identity: Focus on the Myth of"Huang of Xiahoushi"
11
作者 TANG Qi-cui WU Yu-wei 《Journal of Literature and Art Studies》 2016年第6期603-618,共16页
This paper focus on the myth of "Huang of Xiahoushi" (~):~ ~2_t~), focusing on the distribution of Jade Huang (夏后氏之璜) since the early neolithic and its process of pluralistic integration. The paper explor... This paper focus on the myth of "Huang of Xiahoushi" (~):~ ~2_t~), focusing on the distribution of Jade Huang (夏后氏之璜) since the early neolithic and its process of pluralistic integration. The paper explores the story of ethnic group, cultural identification and the significance of Jade Huang in the discourse construction of etiquette civilization behind the mythic narrative based on multi-evidence method and the local meaning of literature in ancient Chinese context. 展开更多
关键词 Jade Huang Huang of Xiahoushi unified diversity Chinese identity etiquette civilization multi-evidence method
下载PDF
Transfrom Construction Waste into Resources
12
作者 DANG XIAOFEI 《China Today》 2016年第10期56-57,共2页
THE almost two-meter-high sculpture Liu Xiaofan admired at an exhibition,and which he assumed was bronze,turned out to have been made from recycled building waste.Liu immediately thought of the pile of demolition debr... THE almost two-meter-high sculpture Liu Xiaofan admired at an exhibition,and which he assumed was bronze,turned out to have been made from recycled building waste.Liu immediately thought of the pile of demolition debris next to his home.He had witnessed new construction waste steadily piling up next to his apartment building and the community public lawn.Dust floated high and free as the wind blew and deposited it on his balcony.This epitomizes the "metabolism" of Chinese cities. 展开更多
关键词 exhibition witnessed debris metabolism bronze recycled assumed struction steadily turned
下载PDF
An Exploratory Study on Joumalistic Professionalism and Journalism Education in Contemporary China
13
作者 Baohui Shao Qingwen Dong 《Journalism and Mass Communication》 2016年第4期187-200,共14页
Journalism education and the journalism industry have boomed in the past twenty years in China, however, journalism school graduates are not highly welcomed by media organizations. In order to examine issues and chall... Journalism education and the journalism industry have boomed in the past twenty years in China, however, journalism school graduates are not highly welcomed by media organizations. In order to examine issues and challenges facing journalism education, this study conducted an in-depth interview with practicing journalists and journalism educators through a lens of journalistic professionalism. This paper finds that their perceptions are focusing on expertise, commitment, responsibility but eschewing journalistic autonomy deliberately with respect to journalistic professionalism and concentrating on rigid journalism knowledge without "professional" or practical ability with respect to journalism education. Limitation and suggestions for future research are also provided. 展开更多
关键词 Chinese journalistic professionalism joumalism education journalism education challenges
下载PDF
EXPLORING THE MECHANISM OF ACUPUNCTURE IN THE TREATMENT OF STROKE FROM CHANGES OF GLUCOSE METABOLISM IN THE CEREBRAL MOTOR CENTER
14
作者 石现 左芳 关玲 《World Journal of Acupuncture-Moxibustion》 2004年第3期9-12,共4页
Objective: To observe the effect of acupuncture on cerebral glucose metabolism in stroke patients. Methods:Changes of cerebral glucose metabolism before and after acupuncture stimulation were observed in six cases of ... Objective: To observe the effect of acupuncture on cerebral glucose metabolism in stroke patients. Methods:Changes of cerebral glucose metabolism before and after acupuncture stimulation were observed in six cases of stroke patients by using positron emission tomography (PET) scanner. Elecrocacupuncture (EA,4 Hz, continuous waves and duration of 20 min) was applied to Baihui (百会 GV 20) and right Qubin (曲鬓 GB 7). 18 Fluorine deox yglucose (18FDG), a developer (radioactive form of glucose) for showing the levels of the brain functional activity was given to the patients intravenously. SPM software was used to deal with the data of each pixel point by unilateral t-test (Ts: P = 0.05), then, the regions showing increase/decrease of the glucose metabolism were obtained. Results: After acupuncture stimulation, significant increase of glucose metabolism was found to be in the first somatic motor cortical region (Ml), supplementary motor area (SMA), premotor area (PMC), and the superior parietal lobule (LPs) on the healthy side of the brain; while the decrease of glucose metabolism found in MI, PMC and LPs on the focus side. In addition to the cerebral regions related to the motor function, changes of glucose metabolism were also found in the parietal lobule and basal ganglion area, central parietal gyrus, superior parietal gyrus, putamen, cerebellum, etc. .Conclusion: Acupuncture of Qubin (GB 7) and Baihui (GV 20) can activate motor-related cerebral structures in the bilateral cerebral hemisphere and induce excitement reaction of the potentially correlative motor area so as to compensate or assist the injured motor area to play a role in improving motor function in stroke patients. 展开更多
关键词 Stroke Cerebral function Electroacupuncture PET
下载PDF
The discussed of China private enterprise technology innovation
15
作者 Min Huang 《International English Education Research》 2014年第5期38-40,共3页
Innovation is the source of modem enterprise profit, is also the fundamental driving force for enterprise development. With the rapid development of knowledge economy, the private economy is more and more important in... Innovation is the source of modem enterprise profit, is also the fundamental driving force for enterprise development. With the rapid development of knowledge economy, the private economy is more and more important in our national economy. Private enterprises become the main body of the market economy, at the same time, private enterprises in stabling economic growth, promoting international trade, promoting technological progress, reducing unemployment plays a positive role which cannot be substituted. However, private enterprises are existence problems such as lack of innovation resources, and inadequate innovation ability. Therefore, the private enterprise has important practical significance to studying the technological innovation project. 展开更多
关键词 private enterprise technological innovation PROBLEMS
下载PDF
China Unveils Its First Mars Probe and Rover
16
作者 YAO Tianyu 《Aerospace China》 2016年第3期60-60,共1页
A press conference was held in Beijing on August 23,marking the launch of a public competitive campaign to obtain a name and logo for China’s Mars mission.The project and its progress were introduced at the conferenc... A press conference was held in Beijing on August 23,marking the launch of a public competitive campaign to obtain a name and logo for China’s Mars mission.The project and its progress were introduced at the conference and the external appearance of the Mars probe and the rover was revealed.China’s Mars mission will be implemented in two steps.The objective of the first step is to achieve orbiting,landing,and roving.Mars sampling will be the purpose of the second step。 展开更多
关键词 rover campaign landing marking appearance Rover Probe launch steps roving
下载PDF
Growth of the Huoerguosi anticline (north Tianshan Mountains) by limb rotation since the late Miocene 被引量:1
17
作者 WANG ShengLi CHEN Yan LU HuaFu 《Chinese Science Bulletin》 SCIE EI CAS 2008年第19期3028-3036,共9页
Huoerguosi 背斜,在北方 Tianshan 山山麓 fold-and-thrust 带定位了,是 trending 东方西方差错相关的褶层。在沿着 Jingou 河的生气的节,它的南方手足由 Anjihaihe 的生长前阶层组成( E ( 2-3 )一), Shawan (( E-3-N-1 ) s ), Tax... Huoerguosi 背斜,在北方 Tianshan 山山麓 fold-and-thrust 带定位了,是 trending 东方西方差错相关的褶层。在沿着 Jingou 河的生气的节,它的南方手足由 Anjihaihe 的生长前阶层组成( E ( 2-3 )一), Shawan (( E-3-N-1 ) s ), Taxihe ( N ( 1 ) t )和 Dushanzi ( N ( 2 ) d )的更低的部分形成, trending 东方西方并且蘸到南方 55 学位,并且 Dushanzi ( N ( 2 ) d )和 Xiyu 的上面的部分的生长阶层(( N-2-Q ( 1 )) x )形成,哪个在 Xiyu 的底部在生长阶层的底从 55 个学位减少到 47 个学位的剧降(( N-2-Q ( 1 )) x )形成到类似于在 Xiyu 的顶的 0 个学位(( N-2-Q ( 1 )) x )形成。在背斜的北方手足的阶层垂直或打翻,并且被突破戳切导致 drag 褶层。深入地,背斜是对称的,并且它的核心包括白垩纪和侏罗记忍受煤的床。在地震侧面,在背斜的南方手足的生长前阶层的地震反射镜常常蘸到南方,并且生长阶层之一扇向南方,谁的向上蘸减少。沿着 Jingou 河山谷和在地震侧面显示出的背斜的深结构的南方手足生长阶层 outcropped 的几何学显示 Huoerguosi 背斜是由手足旋转成长的分开褶层背斜。基于生长模型和 magnetostratigraphic 年龄,在 Huoerguosi 背斜的成长过程期间,南方手足吸收的平均弄短率类似于 0.46 mm/a ,和背斜的平均高举率类似于超过平均免职率的 0.86 mm/a ,它根据背斜的顶强烈地被侵蚀的事实。考虑 Huoerguosi 背斜的对称的几何学并且忽略突破推进,整个背斜弄短应该非常类似于 0.92 mm/a,加倍在南方手足从生长决定的弄短的率。 展开更多
关键词 新生 中新代 天山 地理结构
原文传递
EW-trending uplifts along the southern side of the central segment of the Altyn Tagh Fault, NW China: Insight into the rising mechanism of the Altyn Mountain during the Cenozoic 被引量:26
18
作者 WU Lei XIAO AnCheng +4 位作者 WANG LiQun MAO LiGuang WANG Liang DONG YouPu XU Bo 《Science China Earth Sciences》 SCIE EI CAS 2012年第6期926-939,共14页
The Altyn Tagh Fault and the Altyn Mountain define respectively the tectonic and geographical northern edges of the Tibetan Plateau, and figure prominently in the growth and rising mechanism of the plateau. The rhombu... The Altyn Tagh Fault and the Altyn Mountain define respectively the tectonic and geographical northern edges of the Tibetan Plateau, and figure prominently in the growth and rising mechanism of the plateau. The rhombus-shaped Altyn Mountain has long been thought to have an intimate relation with the Altyn Tagh Fault; however, its formation mechanism remains unclear and debatable. In this paper, we focus on the EW-trending uplifts in the Altyn Mountain, and investigated three Cenozoic sedimentary sections in the vicinity of the EW-trending uplifts located along the southern side of the central segment of the Altyn Tagh Fault. Magnetostratigraphy and pollen analysis were used to constrain ages of the sediments. Clast composition of conglomerate and paleocurrents obtained from clast imbrications were applied to determine the provenance. We also established a geological section parallel to the Altyn Tagh Fault on sedimentary facies across the northwestern Qaidam Basin. The results indicate that these en-echelon EW-trending uplifts formed as early as ca. 36 Ma and were preferred to be under the control of basal shear of the Altyn Tagh Fault in the middle-lower crust, symbolizing the early uplift of the Altyn Mountain during the Cenozoic. Left-slip along the Altyn Tagh Fault occurring during the Miocene and afterwards displaced and altered these uplifts, shaping the Altyn Mountain to its present fabric. 展开更多
关键词 Northern Tibetan Plateau Altyn Tagh Fault Aityn Mountain EW-trending uplift Qaidam Basin
原文传递
Sedimentary fill history of the Huicheng Basin in the West Qinling Mountains and associated constraints on Mesozoic intracontinental tectonic evolution 被引量:9
19
作者 LI Wei DONG YunPeng +4 位作者 GUO AnLin LIU XiaoMing LIU YiQun ZHA XianFeng ZHANG KuaiLe 《Science China Earth Sciences》 SCIE EI CAS 2013年第10期1639-1653,共15页
The Qinling Orogenic Belt is divided commonly by the Fengxian-Taibai strike-slip shear zone and the Huicheng Basin into the East and West Qinling mountains, which show significant geological differences after the Indo... The Qinling Orogenic Belt is divided commonly by the Fengxian-Taibai strike-slip shear zone and the Huicheng Basin into the East and West Qinling mountains, which show significant geological differences after the Indosinian orogeny. The Fengxian-Taibai fault zone and the Meso-Cenozoic Huicheng Basin, situated at the boundary of the East and West Qinling, provide a natural laboratory for tectonic analysis and sedimentological study of intracontinental tectonic evolution of the Qin- ling Orogenic Belt. In order to explain the dynamic development of the Huicheng Basin and elucidate its post-orogenic tecton- ic evolution at the junction of the East and West Qinling, we studied the geometry and kinematics of fault zones between the blocks of West Qinling, as well as the sedimentary fill history of the Huicheng Basin. First, we found that after the collisional orogeny in the Late Triassic, post-orogenic extensional collapse occurred in the Early and Middle Jurassic within the Qinling Orogenic Belt, resulting in a series of rift basins. Second, in the Late Jurassic and Early Cretaceous, a NE-SW compressive stress field caused large-scale sinistral strike-slip faults in the Qinling Orogenic Belt, causing intracontinental escape tectonics at the junction of the East and West Qinling, including eastward finite escape of the East Qinling micro-plate and southwest lateral escape of the Bikou Terrane. Meanwhile, the strike-slip-related Early Cretaceous sedimentary basin was formed with a fight-order echelon arrangement in sinistral shear zones along the southern margin of the Huicheng fault. Overall during the Mesozoic, the Huicheng Basin and surrounding areas experienced four tectonic evolutionary stages, including extensional rift basin development in the Early and Middle Jurassic, intense compressive uplift in the Late Jurassic, formation of a strike-slip extensional basin in the Early Cretaceous, and compressive uplift in the Late Cretaceous. 展开更多
关键词 the Qinling Orogenic Belt the West Qinling the Huicheng Basin sedimentary filling tectonic evolution escape tectonics
原文传递
Opening time and filling pattern of the Neoproterozoic Kangdian Rift Basin,western Yangtze Continent,South China 被引量:14
20
作者 ZHUO JieWen JIANG XinSheng +5 位作者 WANG Jian CUI XiaoZhuang XIONG GuoQing LU JunZe LIU JianHui MA MingZhu 《Science China Earth Sciences》 SCIE EI CAS 2013年第10期1664-1676,共13页
The Neoproterozoic Kangdian Rift Basin is a continental rift basin in the western Yangtze Continent.Determining its time of opening and subsequent filling pattern is an important aspect of understanding the formation ... The Neoproterozoic Kangdian Rift Basin is a continental rift basin in the western Yangtze Continent.Determining its time of opening and subsequent filling pattern is an important aspect of understanding the formation and evolution of the Yangtze Continent,South China.The Luliang Formation is the early filling in the eastern part of this rift basin,and its deposition age and filling sequence are significant for studies of the regional stratigraphic correlation,opening time,and filling pattern of this basin.Having been correlated to the upper part of the Mesoproterozoic Kunyang Group or to the Neoproterozoic Chengjiang Formation,the age and regional stratigraphic correlation of the Luliang Formation have long been uncertain.This is due to a lack of reliable absolute age constraints.To address this issue,the first zircon SHRIMP U-Pb geochronology has been established for this formation,yielding two high-precision isotopic ages of 818.6±9.2 and 805±14 Ma for the tuff layers at the bottoms of the lower and upper members of the Luliang Formation,respectively.Given the error factor,the bottom age of the lower member of the Luliang Formation can be interpreted as ca.820 Ma,corresponding to the bottom age of the lower part of the Banxi Group,which is the early filling of the Neoproterozoic Xianggui Rift Basin,a representative basin of the Neoproterozoic rift basins in the Yangtze Continent,South China.The bottom age of the upper member of the Luliang Formation can be interpreted as ca.800±5 Ma,corresponding to the bottom age of the Chengjiang Formation in the western part of the Neoproterozoic Kangdian Rift Basin and also corresponding to the bottom age of the upper part of the Banxi Group in the Neoproterozoic Xianggui Rift Basin.These ages indicate that the Neoproterozoic Kangdian Rift Basin shares the same opening time and filling sequences as those of the other Neoproterozoic rift basins in South China.Basin analysis shows that the Neoproterozoic Kangdian Rift Basin is a typical half-graben basin,with its main boundary fault in the west and basin center in the east.This basin consisted of mini unidirectional half-graben basins in its juvenile stage and simplified to become a large united half-graben basin in its mature stage,i.e.,a supradetachment basin. 展开更多
关键词 South China Neoproterozoic Kangdian Rift Basin Luliang Formation zircon SHRIMP U-Pb age opening time andfilling pattern half-graben basin
原文传递
上一页 1 2 下一页 到第
使用帮助 返回顶部