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| 1 | Strain and shear types of the Louzidian ductile shear zone in southern Chifeng, Inner Mongolia, China显示文摘The Louzidian ductile shear zone at the south of Chifeng strikes NE-SW and dips SE at low-medium- angles. This ductile shear zone is mainly composed of granitic mylonite, which grades structurally upward into a chloritized zone, a microbreccia zone, a brittle fault and a gouge zone. All these zones share similar planar attitudes, but contain different linear attitudes and kinematic indicators. Finite strain measurements were performed on feldspar porphyroclasts using the Fry method. These meas- urements yield Fulin indexes of 1.25―3.30, Lode's parameters of -0.535―-0.112 and strain parameters of 0.41―0.75 for the protomylonite, respectively. These data are plotted within the apparent constric- tional field in Fulin and Hossack diagrams. In contrast, for the mylonite, corresponding parameters are 0.99―1.43, -0.176―-0.004 and 0.63―0.82, respectively, and located in the apparent constrictional field close to the plane strain. The mean kinematic vorticity numbers of the protomylonite and mylonite by using three methods of polar Mohr circle, porphyroclast hyperbolic and oblique foliation, are in the range of 0.67―0.95, suggesting that the ductile shearing is accommodated by general shearing that is dominated by simple shear. Combination of the finite strain and kinematic vorticity indicates that shear type was lengthening shear and resulted in L-tectonite at the initial stage of deformation and the shear type gradually changed into lengthening-thinning shear and produced L-S-tectonite with the uplifting of the shear zone and accumulating of strain. These kinds of shear types only produce a/ab strain facies, so the lineation in the ductile shear zone could not deflect 90° in the progressively deformation. | WANG XinShe ZHENG YaDong WANG Tao | 2007 | Science China Earth Sciences2007,50,4: | 20 |
| 2 | The Maximum Effective Moment Criterion (MEMC) and Its Implications in Structural Geology显示文摘The Mohr-Coulomb criterion has been widely used to explain formation of fractures. However, it fails to explain large strain deformation that widely occurs in nature. There is presently a new theory, the MEMC, which is mathematically expressed as Meff = ((σ1 ? σ3) L·sin 2α sin α)/2, where σ1?σ3 represents the yield strength of the related rock, L is a unit length and α is the angle between σ1 and deformation bands. This criterion demonstrates that the maximum value appears at angles of ±54.7° to σ 1 and there is a slight difference in the moment in the range of 55°±10°. The range covers the whole observations available from nature and experiments. Its major implications include: (1) it can be used to determine the stress state when the related deformation features formed; (2) it provides a new approach to determine the Wk of the related ductile shear zone if only the ratio of the vorticity and strain rate remains fixed; (3) It can be used to explain (a) the obtuse angle in the contraction direction of conjugate kink-bands and extensional crenulation cleavages, (b) formation of low-angle normal faults and high-angle reverse faults, (c) lozenge ductile shear zones in basement terranes, (d) some crocodile structures in seismic profiles and (e) detachment folds in foreland basins. | ZHENG Yadong WANG Tao WANG Xinshe | 2006 | Acta Geologica Sinica(English Edition)2006,80,1: | 15 |
| 3 | Mesozoic thrusts and extensional structures in the Daqingshan orogen, Inner Mongolia, and their temporal and spatial relationship显示文摘三大规模戳在 Daqingshan orogen 发展了,内部蒙古,与东北东方,到 Suletu 的从 Louhuashan 的 trending 在这篇论文被描述。这些指导西北的戳,和四条构造的带(或构造的表) 由这些差错分开了,形成了一个典型推进系统。原来定义的 Hohhot 变形核心建筑群可以是一张构造的表,做推进的系统的最高的构造联合起来并且在顶上由 Daqingshan 分开差错截断了。存在 tectono 按年代先后的研究证明可能推进这个区域沿着最高的分开差错发生在象延期的一样的时间。这在 Daqingshan orogen 的收缩和延期可能是同时的礼品。Daqingshan orogen 的结构的模式能为同时的推进被相关到喜玛拉雅的 orogen,和模型,在 Himalaya 的分开可以为解释 Daqingshan orogen 的发展给一个提示。 | QI Guowei ZHANG Jinjiang WANG Xinshe GUO Lei | 2007 | Progress in Natural Science:Materials International2007,17,2: | 6 |
| 4 | Gravity anomaly during the Mohe total solar eclipse显示文摘By using a high-precision LaCoste-Romberg (D-122#) gravimeter, continuous and precise measurements were carried out during the March 9,1997 total solar eclipse in the Mohe region in Northeast China. The gravity variations were digitally recorded during the total solar eclipse so as to investigate the possible anomaly of the sun and the moon’s gravitational fields on the earth. After the careful processing and analysis of the observed data, no significant anomaly during the very solar eclipse has been found. However, there are two ’gravity anomaly valleys’ with near symmetrical decrease of about 6-7 μGal at the first contact and the last contact. This is the anomaly phenomenon observed and reported for the first time in the literature. This note presents some analyses and discussions. | WANG Qianshen YANG Xinshe TANG Keyun | 2001 | Chinese Science Bulletin2001,46,21: | 1 |
| 5 | Precise measurement of gravity variation during a total solar eclipse显示文摘 | Wang Qianshen Yang Xinshe Wu Chuanzhen Guo Honggang Liu Hongchen and Hua Changchai | 2000 | Physical Review D2000,62,04: | 1 |
| 6 | Genesis of Dolomite from Ma5^5-Ma5^10 Sub-members of the Ordovician Majiagou Formation in the Jingxi Area in the Ordos Basin显示文摘We clarified three stages of dolomitization and secondary changes by studying the petrology and geochemistry characteristics of dolomite from the Ma5~5-Ma5^(10) sub-members of the Ordovician Majiagou Formation in the Jingxi area in the Ordos Basin:(1) Syngenetic microbial dolomitization is characterized by formation of dolomite with a mainly micrite structure and horse tooth-shape dolomite cements.(2) Seepage reflux dolomitization during the penecontemporaneous period superposed adjustment functions such as recrystallization and stabilization in the middle-deep burial stage,forming dolomites mainly consisting of micro crystal and powder crystal structure.(3) Powder dolomite,fine dolomite,and medium-coarse crystalline dolomite formed in pores and fractures in the middle-deep burial stage.The secondary concussive transgression-regression under a regressive background is an important condition for the occurrence of many stages of dolomitization in the study area.The basin was an occlusive epicontinental sea environment in the MaS member of the Ordovician Majiagou Formation sedimentary period.In the sediments,sulfate content was high,which is conducive to the preservation of microbial activity and microbial dolomitization.Micritic dolomite formed by microbial dolomitization provides good migration pathways for seepage reflux dolomitization.Affected by evaporation seawater with increased Mg/Ca ratio,seepage reflux dolomitization was widely developed and formed large-scale dolomite,and underwater uplifts and slopes are favorable areas for dolomite.In the middle-deep burial stage,dolomitizing fluid in the stratum recrystallized or stabilized the previous dolomite and formed a small amount of euhedral dolomite in the pores and fractures. | LIU Jingdong JIANG Youlu LIU Xinshe YANG Zhiwei HOU Xiangdong ZHU Rongwei WEN Caixia WANG Feiyan | 2017 | Acta Geologica Sinica(English Edition)2017,91,4: | 1 |
| 7 | Precise measurement of gravity variations during a total solar eclipse 显示文摘 | Qianshen Wang and Xinshe Yang | 2000 | Physics Review2000,,41: | 1 |
| 8 | A New Group Signature Scheme With Immune Function for Group Center显示文摘During the establishment of group signature scheme,the parameter information used by the group members is often derived from the group center,and the members are likely to lack immune function to the center.To overcome this,a new signature scheme with immune function to the group center is proposed.In the scheme,group members and centers each have independent secret information,but they can authenticate each other.A large amount of content in the calculation process is implemented by group members(terminals),which reduces the computation done by the group center.Furthermore,the scheme also features anti-common modulus attack,anti-joint attack,anti-detriment,revocation and so on. | Li Xinshe Yao Junping Wang Yijing | 2021 | 通讯和计算机(中英文版)2021,18,2: | 0 |
| 9 | The Method on Deducing Multiplicity Measurement Equations of Neutron/γ显示文摘Based on some important domestic and international references,the third γ multiplicity measurement equation is derived,but it is different from the results given in current researches.The neutron multiplicity equation is deduced in this paper,especially the fourth fast-neutron multiplicity equation based on the liquid scintillation detectors,which is more complex than the other multiplicity equations up to the fourth order.The equations given in this paper can be used to verify the validity and availability of principles for the multiplicity measurement up to the fourth order,and extend the application scopes of the neutron multiplicity measurement,such as correcting the additional measurement value to eliminate influences for dead times.It will be the foundation of nuclear researches,if the higher order multiplicity measurement is important for nuclear materials’control and accountability. | Li Xinshe Yao Junping Wang Yijing | 2022 | 通讯和计算机(中英文版)2022,19,1: | 0 |