奥长花岗岩

The volcanic rocks of the Xiong'er Group is also widespread in the Baoji and Lvliang area and also appear as 1.75Ga-old mafic dyke swarms, A-type granites, later anorthosite and rapakivi granites (1.75-1.70Ga), and alkaline granitoids (~1.65Ga). These intrusive rocks are assumed to have genetic link to the volcanic rocks of the Xiong'er Group.

熊耳期岩浆活动在华北陆块广泛分布，除了陕西宝鸡附近及山西吕梁地区的火山岩，还广泛分布1.75Ga前后的基性岩墙群、A-型花岗岩以及比熊耳群稍晚的斜长岩、奥长环斑花岗岩等(1.75-1.70Ga)和碱性花岗岩类(~1.65Ga)。

The uplifting belt is composed of metasandstone, marble, overlying thick stromatolite (Jinyanshan Group of Jixian System). Metamorphic rocks of 450Ma± occur in both south and north active margin. Post-collision bimodal volcanic rocks and A-type granite occur in the middle and the north side;(4) Apa-Mangya tectonic melange belt consists of ophiolite (including ultramafic rocks, gabbro, plagiogranite and basalt) and flysch and eclogite of late Ordovician.

隆起带为中元古界变砂岩、大理岩，上覆厚层叠层石灰岩，南北边缘有均为450Ma左右的变质岩，中部和北侧分布有碰撞后双峰式火山岩与碱性花岗岩；④阿帕—茫崖构造混杂岩带，由超镁铁质岩、辉长岩、斜长花岗岩、玄武岩等蛇绿岩残片与晚奥陶世复理石沉积和榴辉岩块组成。

Apart from the amphibolite enclaves and dyke swarms, the isotopic ages of the magmatic intrusions have been measured. The magmatic sequence and geochronologic framework are as follows: Quartz monzonite, 1825 ± 23 Ma, TDM = 2920Ma; Throndhjemite, 2374 ± 10 Ma, TDM = 3460 Ma; Tonalite, 2604±102 Ma, TDM = 3063 Ma; Monzonite, 3096±17 Ma, TDM = 2978 Ma; Granite, 3605±43 Ma, TDM = 3528 Ma.

在野外建立热事件相对序列的基础上，通过单颗粒锆石U-Pb法测年和Sm-Nd同位素示踪研究，初步建立了该区早前寒武纪岩浆活动的年代格架：石英二长岩：1825±23 Ma，TDM=2920 Ma；奥长花岗岩：2374±10 Ma，TDM=3460 Ma；英云闪长岩：2604±102 Ma，TDM=3063 Ma；二长花岗岩：3096±17 Ma，TDM=2978 Ma；花岗岩：3605±43 Ma，TDM=3528 Ma。

The original defined adakitesare sodium igneous rocks, they are tonalite, trondhjemite or (plagioclase-rich) granodiorite in whole-rock chemistry; however, the K-rich "C-type" adakite defined by Chinese scholars are potassic igneous rocks, they are granite, quartz monzonite and (alkali feldspar-rich) granodiorite, etc.

最初定义的埃达克岩是钠质火成岩，其全岩化学成分相当于英云闪长岩、奥长花岗岩和花岗闪长岩；而富钾的"C型埃达克岩"全岩化学成分相当于花岗岩、石英二长岩和花岗闪长岩。

Of the five stages deformation, the exact ages of the (2) and (3) were determined by 40Ar/39Ar method as 290 and 259 Ma respectively.2. New results on the metamorphic belts and associated metamorphism of the Xiaopu metamorphic rocksBased on detailed microtextural observations and occurrence of typical metamorphic minerals, five metamorphic belts in the Xiaopu metamorphic rocks are identified. From the north to the south, they are biotite belt, garnet belt, staurolite belt, andalusite belt, and sillimanite belt. I suggested that the metamorphic belts occurred in the Xiaopu area belongs to the high temperature/low pressure series, may have resulted from the later Permian crust extension at ca. 290 Ma.3. I suggest that there may have been a Carboniferous backarc basin along the southern slope of the Harlik Mountain.Detrital Zircon SHRIMP U-Pb dating indicated that the sedimentary age of the Julideneng formation lithic sandstone must be later than late Devonian, most likely is Carboniferous rather than previously thought Precambrian. Analyses on its geologic setting, location of provenance, and sedimentary environment suggest the Carboniferous strata may form in a lagged backarc basin bounded by backarc uplifts.5. Reconstruction of the post-Paleozoic tectonic evolution history of the Harlik MountainThe tectonic evolution of Harlik mountains since the Paleozoic were reconstructed as followings:(1) arc-affinity magmative activities occurred during the middle-Ordovician to early-Silurian;(2) the middle-Silurian to late-Devonian was a back-arc uplift stage;(3) back-arc extension featured the Carboniferous period;(4) post-collisional extension and/then compression during Permian;(5) at the Mesozoic, differential uplift developed; and (6) the late Cenozoic is the intra-continental re-orogen stage.6. Primary estimation of the crust shortening is madeThe folded pre-Mesozoic strata were used to estimate crust shortening along the Harliknanshankou-Koumenzi, Shichengzi-Baishitou, and Qincheng-Xiaopu sections. Their shortening ratios are 16.2%, 19.8%, and 20.1% respectively corresponding crust shortening are 4.3, 9, and 11.3 km.

根据Ar-Ar热年代学研究，精确测定了早二叠世伸展变形和晚二叠世挤压变形的峰期时代分别为290Ma和259Ma.2、提出了关于哈尔里克山南麓小铺一带变质带和变质作用的新认识根据显微观察资料和特征变质矿物的出现，把小铺一带的变质岩由SW向NE方向依次划分为黑云母带、石榴石带、十字石带、红柱石带和矽线石带等变质带；初步确定该区的变质作用属于中温-低压型，变质作用发生的时代为290Ma左右，是该区早二叠世地壳伸展的产物。3、首次提出哈尔里克山南麓在石炭纪可能发育弧后盆地的新观点根据哈尔里克山南麓原"居里得能组"岩屑砂岩的碎屑锆石SHRIMP U-Pb定年，确认这套地层的沉积不早于晚泥盆世，很可能是石炭纪，而不是前人所说的前寒武纪；结合对其区域地质背景、源区位置和沉积环境分析，推测该区石炭纪可能为滞后弧后盆地和弧后隆起区构造背景。4、进一步证明哈尔里克山不发育与岛弧演化相关的泥盆纪岩浆活动根据对代表性闪长岩和花岗岩的锆石SHRIMP年代学研究获得的新资料，结合该区已有相关资料的综合研究，确定哈尔里克山岩浆岩分别形成于奥陶纪-志留纪和石炭纪晚期-二叠纪，不存在泥盆纪的岩浆岩，进而认为该区泥盆纪不属于岛弧环境。5、重建了哈尔里克山古生代以来的地质演化过程根据区域资料以及本次研究所获得的资料，把哈尔里克山古生代以来的构造演化划分中奥陶世-早志留世为岛弧、中志留世-晚泥盆世为弧后区、石炭纪弧后伸展、二叠纪为后碰撞伸展与挤压、中生代差异隆升和晚新生代陆内再造山过程等构造阶段。6、初步估算了哈尔里克山地壳缩短率和缩短量根据前中生代地层褶皱估算的哈尔里克山南山口-口门子、石城子-白石头和沁城-小铺三条剖面的地壳缩短率分别为16.2%、19.8%和20.1%，相应的地壳缩短量分别为4.3km、9km和11.3km。

Sandouping and Huanglingmiao suites consist mainly of tonalite, trondjemite and granodolerite, being syntectonic granitoids emplaced at the ductile domain 16 km deep under the action of SN-strikingregional compression.

三斗坪和黄陵庙两个岩套主要由英云闪长岩、奥长花岗岩花岗闪地组成，是在近南北向区域挤压下于约16km深部塑性域定位的同构造花岗岩，前者主要依靠岩浆在构造弱面逐次强力楔入创造定位空间，后者主要在处于活动状态的韧性拉张剪切带内定位。

SHRIMP zircon dating suggests that Yajiangqiao trondhjemite was emplaced in 778 ± 11 Ma.

雅江桥奥长花岗岩的SHRIMP锆石U-Pb年龄测定结果为778±11 Ma 。

Recognition orA-type granite and I-type trondhjemite from available published results.

对区内花岗岩数据重新整理后，区分出碱性A型花岗岩和I型奥长花岗岩。

I-type granite occurs on north of HongliugouLapeiquan Fault, its chemical composition is similar to that of trondhjemite arisen by Barker (1979), maybe also a product of subduction and collision of oceanic basin in early Paleozoic.

根据SiO〓-Al〓O〓和SiO〓-FeO〓/图解判别显示造山后花岗岩的特征；后者分布在红柳沟—拉配泉断裂以北，其成分与巴克尔1979年提出的奥长花岗岩的成分非常相似，也可能是区内早古生代洋盆俯冲碰撞的产物。

The original defined adakitesare sodium igneous rocks, they are tonalite, trondhjemite or (plagioclase-rich) granodiorite in whole-rock chemistry; however, the K-rich "C-type" adakite defined by Chinese scholars are potassic igneous rocks, they are granite, quartz monzonite and (alkali feldspar-rich) granodiorite, etc.

最初定义的埃达克岩是钠质火成岩，其全岩化学成分相当于英云闪长岩、奥长花岗岩和花岗闪长岩；而富钾的&C型埃达克岩&全岩化学成分相当于花岗岩、石英二长岩和花岗闪长岩。

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。

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