彭县地区飞来峰的特征及形成演化

彭县地区飞来峰根据其内部构造特征和力学成因可分为两类──推覆体和滑覆体。推覆体是挤压环境下的产物，它形成于晚三叠世末期的印支运动。滑覆体是拉张环境下重力滑动的产物，它形成于燕山──喜马拉雅期。推覆体是滑覆体的“母体”。     

初论龙门山推覆构造带的基本结构样式

龙门山推覆构造带在构造类型上具有褶皱推覆体和冲断推覆体之分，在形成方式上具有推覆和滑覆两大类型，在形成序次上具有前展式和后叠式的扩张方式，在组合形态或结构上具有推覆滑覆叠加样式，是青藏高原东北边缘推覆构造的普遍特征之一。在形成机制上与扬子地台、特提斯构造带的演化密切相关，是我国陆内造山带的典型推覆构造带。     

对龙门山南段宝兴-芦山地区构造格局的探讨

龙门山南段宝兴地区存在着多次推覆和多层滑覆现象,以及推覆滑覆叠加样式。该区存在着印支运动的遗迹,推覆构造在大部分地区切割了印支运动不整合面。造山过程经历了褶皱和推覆作用两个阶段,经历了印支期和喜马拉雅期造山运动。     

龙门山推覆构造变形特征

文章把龙门山推覆构造划分为4个推覆体和3个滑覆体。分别叙述了它们各自的变形特征。计算了造山带的地壳缩短率为42～63%。最后确认了龙门山推覆构造的推覆模式是推覆滑覆叠加模式,其发展方向为由北西向东南,扩展方式为背驮式(或前展式)。     

雪峰山地区飞来峰特征及意义

本文利用野外露头、野外实测地质路线资料和1：20万区测报告,结合前人对雪峰地区飞来峰构造研究成果,对雪峰地区飞来峰特征及其意义进行了初步研究。本文以构造地质学为理论基础,根据成因将飞来峰分为两类：逆冲推覆类型、重力滑覆类型,结合该区典型的飞来峰构造剖面,分析不同类型飞来峰的构造特征,并对该区飞来峰的分布进行了统计,初步明确了飞来峰的大体分布范围。取得的主要认识有：在本区沅麻盆地东缘逆冲推覆构造大规模发育,其典型代表——飞来峰主要属于逆冲推覆类型,也不乏后期重力滑覆型;该带飞来峰主要集中发育于沅陵—辰溪—怀化—洪江—会同一带,究其构造属性应属雪峰基底拆离造山带的燕山期前缘推覆带,且该带的飞来峰主要形成于燕山期。     

论东秦岭剪切造山带──以武当山韧性推覆构造为例

依据推覆构造形成的力学机制,将推覆构造分为边冲推覆构造、滑覆构造和韧性推覆构造三大类型。通过对武当山地区的综合研究,提出武当山地区为一韧性推覆构造,其几何样式为一个巨型的“ＡＢ”型褶皱。并证实武当山地区为剪切变形区,其变形机制为简单剪切机制。文章还提出整个东秦岭造山带为剪切型造山带。     

淮南罗山-李郢孜段推覆体地质特征及成因

逆冲推覆构造一直是构造地质学研究的热点内容之一。以淮南罗山-李郢孜段推覆体为研究对象,在分析其地质背景基础上,调查了其构造地质特征,发现罗山段地质构造主体上为叠瓦状逆冲推覆体构造,李郢孜段为八公山和罗山的块断的转折端。依据野外地层和构造调查,罗山-李郢孜段推覆体为加里东运动以来多期构造运动叠加的结果,其中印支期的挤压与燕山期的拉张是其形成过程中的两个关键阶段。     

一种新的逆冲推覆构造组合类型-广西凭祥-板丰反向逆冲推覆构造组合

在广西凭祥－板丰一带发现一种新的逆冲推覆构造组合类型,在平面上它是由两个向相反方向逆冲的叠瓦扇和位于其间的大型走滑断层组合而成的,将其命名为反向逆冲推覆构造,人运动学和动力学的特征分析,它具有统一的构造应力场。     

巢湖北部青苔山推覆构造的特征及其成因

青苔山推覆构造是滁河断裂带的重要组成部分。推覆体主要为震旦系、寒武系的灰岩,由NW→SE推覆掩盖在志留系页岩之上,主滑脱面倾角较小(10°～20°)。推覆体中有多期断层存在:高角度逆冲断层倾角60°至直立,并伴随有较大的碎裂岩带,东强西弱;有2组走滑断层发育:一组是NE向的左行走滑断层,与郯庐断裂带有密切的成因联系;另一组为NW向走滑断层,形成时代较晚,破坏早期逆冲断层和NE向走滑断层。推覆体中最晚一期的低角度逆掩断层以主滑脱面为代表,倾角较小,数量较少。青苔山推覆构造形成于早、中侏罗世,是山前盆地冲断变形的产物。晚侏罗世—早白垩世在中国东部大地构造背景下,表现为左行平移;晚白垩世—早第三纪伸展为主,其西侧发育有K2—E红色沉积物;晚第三纪以来再一次逆冲挤压,沿早期逆冲断层再次活动,最终形成现在的推覆构造,推覆距离大于2km     

龙门山中段推覆构造带构造特征

文章依据龙门山中段推覆构造带的构造特征，将其划分为茂汶─耿达推覆构造带、映秀—大宝山推覆构造带、彭灌推覆构造带三个次级推覆构造带，并对各级推覆构造带主滑面特征、推覆体内部构造特征、显微构造特征及变形性质作了较为详细的研究，结果表明：三个次级推覆构造带在变形性质上依次为韧性、韧脆性、脆性，变形强度由强至弱，变形层次从深到浅，均经历了多次构造叠加复合作用。主要推覆期为喜马拉雅期。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.