中生代的

Based on plentiful isotopic dating data and geological studies, the authors, in this paper, discuss the geological meanings of the two isotopic ages given by Lapierre et al., and conclude:① Mesozoic volcanic activities in Zhejiang are most frequent in 130～83 Ma, that is, from the early to late Cretaceous but not the late Jurassic;② The Jiande and Moshishan groups are nearly in the same period and not in an upper—lower stratigraphic relationship with each other;③ The period of 110～100 Ma is a transitional stage from the early high-K calc-alkaline dacite—rhyolite associated with diorite—granodiorite） to the late basalt—rhyolite（associated with K-feldspar granite—alkali granite）.

本文就Lapierre等文中124 Ma和97 Ma两个年龄的地质意义、幕次划分以及浙西与浙东火山岩时代对比作出评论，并厘定浙江中生代火山岩时代归属，提出：①浙江中生代火山活动时代为132～83 Ma；②浙西建德群与浙东磨石山群火山岩并不存在上下关系，地质接触关系、古生物组合和大量同位素定年数据都不支持Lapierre等的浙西与浙东火山活动幕次的对比方案；③ 110～100 Ma为早期高钾钙碱性英安岩—流纹岩（伴生闪长岩—花岗闪长岩）向晚期玄武岩—流纹岩（伴生钾长花岗岩—碱性花岗岩）过渡的转折期。

The olivine-pyroxenite and pyroxenite with crystalloblastic texture and cumulate texture in Mesozoic igneous rocks from western Shandong and western Liaoning reveal that the several magmatic underplating events had taken place before the formation of Mesozoic host-rocks.

鲁西、辽西中生代火成岩中具有变晶结构和堆积结构的橄辉岩-辉石岩类包体的岩石学、矿物学、元素和同位素地球化学研究揭示了该区中生代寄主岩形成之前，曾有过多次的岩浆底侵作用发生。

Occurrence of tectonic heat event on late-Mesozoic in Ordos basin result from intensive thermal mobility of deep lithosphere on the late-Mesozoic,Thermal mobility of deep lithosphere in sourth region is stronger than in north region. Mantle occur underplating and thickness of lithosphere reduce, magma invasion and eruption occur on late-Mesozoic. Ordos basin be in weak extension environment on late-Mesozoic.

鄂尔多斯盆地中生代晚期构造热事件发生的根本原因在于中生代晚期岩石圈深部的热活动增强，盆地南部岩石圈深部热活动性更强，早白垩世鄂尔多斯盆地处于一种弱拉张的构造环境，地幔发生底侵作用，岩石圈减薄，发生岩浆侵入和喷发。

Relationship between Mesozoic granites and mesothermal gold mineralization in Xiaoqinling area has been studied by the typomorphic peculiarities of fluid inclusions and Sr, O and H isotopes of the main types of rocks.

对小秦岭地区与金矿化有关的主要地质体中流体包裹体叠加组合标型特征和有关地质体Sr、H、O同位素组成的标型性研究证明，小秦岭地区中生代中温热液金矿化流体与中生代花岗岩浆分界出的热液之间没有直接联系，成矿流体更可能是一种演化的大气降水。

On the basis of the large numbers of age analysis on apatite and zircon fission track, through the research on the present structural framework, mineral characteristics and depositional environment in remanet strata and comprehensive compare with its neighboring Mesozoic basins in strata, sedimentary facies and hydrocarbon source rock, this thesis systemically discussion on the uplift timing of these mountains around Yanqi basin, original appearances in Mesozoic and characteristics of evolution and later reformation and provide important theoretical basis for petroleum exploration.

本文在大量的磷灰石和锆石裂变径迹年龄分析的基础上，结合现今盆地构造格局和残留地层中岩石矿物特征及沉积环境研究以及与周邻中生代盆地地层、沉积相及烃源岩进行综合对比，系统地探讨了焉耆盆地周缘山体隆升时限、中生代原始面貌及其演化与后期改造特征，为盆地油气勘探提供重要的理论基础。

Analysis on mineral characteristics (percent of shingly fragment, maturation index and heavy mineral coefficient of stability) and depositional environment in Mesozoic remanet strata show that provenance located in the north of Yanqi basin, clast were moved from north to south in Mesozoic, and the sedimentary environment in northern basin were braided stream facies while shallow lacustrine stream facies in southern basin.

通过对焉耆盆地现今残留中生代地层中的岩矿特征(碎屑含砾百分比、成熟度指数和重矿物稳定系数)及沉积环境分析，焉耆盆地中生代物源区位于盆地北部，碎屑由北至南搬运；盆地北部为辫状河相沉积环境，南部为浅湖相沉积环境。

In this dissertation, sedimentology, historical geology, structural geology, geophysics, structural dynamics/geometric, plate structure etc were combined properly. Taking Jiyang depression as studying object, fault distribution of different periods was analyzed, and thus discussing their structural dynamics. Using tectonic subsidence history modeling and denudating relationship between hanging wall and foot wall in Mesozoic faults, fault activity characteristics were discussed.

本论文将沉积学、地史学、构造地质学、地球物理、构造几何学和运动学、板块构造等多学科有机的结合，以济阳坳陷为研究对象，采用各时期断裂分期配套，分析了不同构造运动时期济阳坳陷断层展布，进行构造运动学讨论；利用构造沉降史模拟与中生代断层上下盘剥蚀关系的恢复，探讨了中生代断裂活动的特征。

Such features are typical of ancient lower continental crust, e.g., Archean granulite terranes that experienced extensive U-Th loss and developed time-integrated low radiogenic Pb compositions. The occurrence of the west Ujimqin andesites indicates the existence of ancient continental lower crust beneath the NE China fold belt.4 The Mesozoic granitoids in the Zhangguangcai Range and Jiamusi block have lower Nd ε_(Nd =-3.5～+ 2.1, T_ = 1.0～1.27Ga and highly radiogenic Pb and Sr isotopic composition ~(206Pb/~(204)Pb = 18.4～18.9,~(87)Sr/~(86)Sr = 0.705～0.711, suggesting that the pelagic sediments of the Paleo-Asian Ocean or their metamorphosed derivates were an important component in the region.5 The Pb isotope mapping results show that the mafic rocks in the northern Hinggan Mountains have higher and weakly variable ~(206)Pb/~(204)Pb ratios than those from the southern Hinggan Mountains and the Liaoyuan-Yanji area.

该套岩石的出现为证明东北地区存在古老大陆下地壳提供了重要证据。4张广才岭-佳木斯地区中生代花岗岩表现出低ε_(-3.5～+2.1)、高T_(1.0～1.27Ga)和高放射成因Sr~(87Sr/~(86)Sr=0.705～0.711和Pb同位素组成~(206Pb/~(204)Pb=18.4～18.9，反映了古亚洲洋远洋沉积物或变沉积岩为区域地壳的重要组分之一。5同位素填图结果表明，大兴安岭北区基性火山岩表现出较高且变化小的~(206)Pb/~(204)Pb比值；而南兴安岭-辽源-延吉地区中生代基性火山岩整体上表现出相对北区低~(206)Pb/~(204)Pb同位素比值特征。

The following are the achievements that have beenacquired in this study:1.The spatial distribution regularity of the Mesozoic granitoid plutons in thewestern region of Henan Province has been preliminarily ascertained. These plutons areequidistantly distributed as tracts in the region, belts in E-W direction, and strings in S–N direction.

通过这些工作，论文取得了以下主要成果：1、初步查明了河南省西部地区中生代花岗岩类岩体的空间分布规律，发现中生代花岗岩类岩体在空间分布上具有区域成片、东西成带、南北成串、等间距分布的特征。

The primary provenance of gold placers are various gold deposits and gold mineralization zones of pre-Mesozic Era.

砂金矿的主要原生物源是前中生代各类金矿床和金矿化体，它们多已风化、剥蚀殆尽，而中生代晚期岩金矿体得以保存

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐