首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献，搜索用时 31 毫秒
1.
安徽沿江地区岩浆成矿带   总被引：9，自引：0，他引：9  
安徽沿江地区可分为三个岩浆成矿带：内带（主带） 、北（ 外） 带和南（ 外） 带。内带沿长江断裂带分布，与地幔隆起带一致，幔源高钾碱性玄武岩浆通过不同程度的ＡＦＣ混合机制和结晶分异机制，形成了不同的岩石组合和矿床，基性岩到酸性岩均有分布，其共同点是高钾富碱，侵入岩以高钾钙碱性岩系为主，火山岩以橄榄安粗岩系为主，广义矽卡岩型Ｃｕ、Ｆｅ、Ｓ、Ａｕ 及火山岩型Ｆｅ、Ｓ矿床是主要的矿床类型；南（外） 带以花岗闪长斑岩为主，高硅低碱，属钙碱性岩系，是上地壳下部易熔组分重熔的产物，成矿元素也由主带的Ｃｕ、Ｆｅ、Ｓ、Ａｕ 转向Ｐｂ、Ｚｎ（Ａｇ） 、Ｃｕ、Ｍｏ、Ｗ 等，是斑岩型Ｍｏ、Ｃｕ 矿床的远景带；北（外） 带比较复杂，主体部分属钙碱性岩系，花岗岩与花岗闪长岩侵入体是下地壳重熔的产物，部分花岗闪长斑岩形成广义矽卡岩型Ｃｕ、Ａｕ 矿床，另一部分以幔源物质为主的闪长玢岩，形成斑岩型Ｃｕ 矿。不同的岩浆成矿带受不同的基底控制。Ｎｄ 、Ｓｒ、Ｐｂ 同位素研究表明，主带和北带存在太古宙麻粒岩相变质基底，南带岩浆岩则源于元古宙角闪岩相到绿片岩相变质基底。地幔隆起与幔源物质参与成矿作用，以及由地幔隆起带来的高热流是成矿的最有利条件。建议深入研究幔脊  相似文献   

2.
张达玉  周涛发  袁峰  范裕  刘帅  彭明兴 《岩石学报》2010,26(11):3327-3338
延西铜矿床位于新疆东天山觉罗塔格地区北部的哈尔里克-大南湖岛弧带内,是延东-土屋斑岩型成矿带的西延部分。矿床的赋矿地层主要为石炭系企鹅山群,被含矿斜长花岗斑岩侵入。矿床中的主要岩石类型为安山岩、闪长玢岩以及斜长花岗斑岩,安山岩和闪长玢岩具有同源性及岛弧火山岩的特点,是主要的赋矿围岩;斜长花岗斑岩具有埃达克质岩石的特征,与成矿作用直接相关,其形成晚于安山岩、闪长玢岩。本文测得延西铜矿床辉钼矿Re-Os年龄为326.2±4.5Ma,可以代表其成矿年龄,与土屋-延东铜矿床322.7±2.3Ma的辉钼矿Re-Os年龄基本相同;包括延西铜矿床在内的土屋-延东斑岩型铜矿带成矿时代与成岩时代基本一致或稍晚。延西铜矿床具有斑岩型铜矿床的矿化和围岩蚀变特征,与土屋-延东斑岩型铜矿带内其它矿床均为中石炭世同源岩浆演化的产物,具有相似的成矿作用过程,成矿物质均为岩浆来源,这些矿床可能为同一岩浆活动在不同部位发生矿化的产物。延西铜矿床以及土屋-延东斑岩型铜矿带形成于东天山觉罗塔格地区晚古生代的挤压岛弧背景,应与哈尔里克-大南湖晚古生代岛弧的形成相伴,可能与康古尔塔格大洋板块向北部哈尔里克-大南湖岛弧的俯冲有关。  相似文献   

3.
Abstract: The Alpine Orogen contains in South East Europe, from the Carpathians to the Balkans–Srednogorie, an Upper Cretaceous, ore bearing igneous belt: a narrow elongated body which runs discontinously from the Apuseni Mountains in the North, to the western part of the South Carpathians (Banat) in Romania, and further South to the Carpathians of East Serbia and still further East to Srednogorie (Bulgaria). This results in a belt of 750 km/30–70 km, bending from N-S in Romania and Serbia, to E-W in Bulgaria. Using the well established century-old terminology of this region, we describe it in this paper as the Banatitic Magmatic and Metallogenetic Belt (BMMB). Plate tectonics models of the Alpine evolution of South East Europe involve Mesozoic rifting, spreading and thinning of the continental crust or formation of oceanic crust in the Tethian trench system, followed by Cretaceous-Tertiary convergence of Africa with Europe and opening of Eastern Mediterranean and Black Sea troughs. The result of successive stages in the collision process is not only the continental growth of Europe from N to S by the docking of several microplates formerly separated from it by Mesozoic palaeo–oceans, but also the rise of mountain belts by overthickening of the crust, followed by orogenic collapse, lateral extrusion, exhumation of metamorphic core complexes and post-collisional magmatism connected to strike-slip or normal faulting. The BMMB of the Carpathian-Balkan fold belt is rich in ore deposits related to plutons and/or volcano-plutonic complexes. Serbian authors have proposed an Upper Cretaceous Paleorift in Eastern Serbia for the Timok zone and some Bulgarian geologists have furnished geologic, petrological and metallogenetic support for this extensional model along the entire BMMB. The existence and importance of previous westwards directed subductions of Transilvanides (=South Apuseni = Mure? Zone) and Severin-Krajina palaeo–oceans, popular in Roman ian literature, seems to have little relevance to BMMB generation, but the well documented northwards directed subduction of the Vardar-Axios palaeo–ocean during Jurassic and Lower Cretaceous is a good pre-condition for the generation, during the Upper Cretaceous, of banatitic magmas in extensional regime, by mantle delamination due to slab break–off. Four magmatic trends are found: a tholeiitic trend, a calc-alkaline trend, a calc-alkaline high–K to shoshonitic trend and, restricted to East Srednogorie, a peralkaline trend. For acid intrusives, the typology is clearly I-type and magnetite–series, pointing to sources in the deep crust or the mantle; however, some high 87Sr/86Sr ratios recorded in banatites prove important contamination from the upper crust. The calc-alkaline hydrated magmas, most common for banatitic plutons, can be considered as recording three stages of evolution: more primitive – the monzodioritic, dioritic to granodioritic trend (S Apuseni, S Ba–nat, Timok, C and W Srednogorie); more evolved – the granodioritic-granitic trend (N Apuseni, N Banat, Ridanj–Krepoljin); the alkaline trend (E and W Srednogorie, western part of N Banat). Correlating the composition of the host plutons with the types of mineralisation, several environments can be found in the BMMB, function of timing of fluid separation (porphyry versus non-porphyry environments), depth of emplacement, size of intrusion and geology of intruded rock pile, biotite versus hornblende crystallisation, involving the evolution of K/Na ratio in fluids, i. e. development of potassic and phyllic alteration zones: a) non-porphyry environment with granodioritic to granitic magmas, plutonic level, skarn mineralisation prevails; b) porphyry environment with monzodioritic or dioritic to granodioritic magmas, subvolcanic–hypabyssal–plutonic level; porphyry Cu with skarn halo at hypabyssal-subvolcanic level; c) porphyry environment with monzodioritic or dioritic to granodioritic magmas, volcano-plutonic complexes with porphyry copper plus massive sulfide mineralisation at subvolcanic-volcanic level; d) non-porphyry environment with magmas of alkaline tendency, volcanic level, vein (“mesothermal” and “epithermal”) mineralisation.  相似文献   

4.
The NE–SW Tertiary magmatic belt of central Kalimantan is related to two separate periods of subduction; during the Eocene–Oligocene and Late Oligocene–Miocene. The younger magmatic belt is superimposed upon the earlier belt. This magmatic belt is characterized chiefly by Late Oligocene–Miocene volcanic products, among which limited exposures of the Eocene volcanics have also been mapped by previous investigators. This calc-alkaline magmatic belt has become known as the ‘gold belt’ of Central West Kalimantan on account of a number of discoveries of Neogene epithermal gold mineralization. This mineralization is found in central to proximal volcanic settings and occurred at relatively shallow depths. The earliest known subduction-related magmatism took place in the Eocene–Early Oligocene with the emplacement of calc-alkaline silicic pyroclastics, followed by a period of continental collision. Subsequent subduction-related magmatism continued from Late Oligocene–Pleistocene, during which time the magma evolved from calc-alkaline to potassic calc-alkaline. Plio-Pleistocene magmatism resulted in the formation of basalt flows. The present available K–Ar ages of the Cenozoic volcanics range from 51 to 1 Ma.  相似文献   

5.
Modes, total rock chemistry (including a range of trace elements) and mineral analyses are presented for two selected rocks from the Yeoval (Australia) high-K diorite complex. This and other data show that the high-K diorites may definitely be grouped with calc-alkaline rocks and that the high-K diorites and low-Si diorites are almost identical in chemistry to their fine-grained equivalents. Comparisons of the data are made with other similar rock groups. Criticism is made of the presently used mineralogical classification of diorites and in particular of those diorites rich in potassium. A chemical classification of diorites identical to that used for andesites is proposed.  相似文献   

6.
High-K calc-alkaline rocks from Cape Nelson, eastern Papua are dominated by andesites containing numerous basic inclusions. High-Al basalts and dacites are subordinate. The slight iron enrichment and a systematic variation in K2O/SiO2 correlation observed in these rocks suggests a relationship to nearby rocks of a shoshonite association. The chemical composition of the inclusions illustrates the trends of major and minor element evolution which contradict the idea of complimentariness of high-K calc-alkaline rocks and alpine ultramafic rocks. The chemical character of the lavas (high K, Rb and Ba as well as high Cr and Ni) can be explained by fractional melting involving a mica phase.  相似文献   

7.
埃达克岩与Cu-Au成矿作用：有待深入研究的岩浆成矿关系   总被引：29，自引：19，他引：29  
研究表明，环太平洋地区新生代斑岩铜矿和浅成热液金矿与同期的埃达克质岩浆活动存在密切的时空与成因联系。埃达克岩是许多世界级的斑岩铜矿的容矿岩，也是许多浅成热液矿化系统的成矿母岩浆。根据目前的研究，二者成因联系可能在于埃达克质岩浆的富流体、高氧逸度和基性源岩等固有属性，有利于Cu、Au等深源金属元素的萃取与富集成矿一因此，这可能是一种潜在的岩浆成矿专属性关系，但对产生这种关系的原因与机制仍然不十分清楚。这有待于今后深入开展成矿与无矿的埃达克岩、成矿的埃达克岩与非埃达克岩、无矿的埃达克岩与非埃达克岩等方面的对比研究，以揭示这种成矿专属性的本质。  相似文献   

8.
Taiwan is an active mountain belt created by the oblique collisionof the northern Luzon arc with Asia. Late Pliocene extensionalcollapse of the northern Taiwan mountain belt (NTMB) was accompaniedby magmatism that formed the Northern Taiwan Volcanic Zone (NTVZ;2·8–0·2 Ma). The geochemical characteristicsof the NTVZ magmas can thus provide constraints both for themantle source composition and the geodynamic processes operatingin the late orogenic stage of the region. The NTVZ volcanicrocks consist dominantly of calc-alkaline andesites and basalts,along with subordinate but heterogeneous lavas including low-K,shoshonitic and ultrapotassic magmas. From the NE to the SWin the NTVZ, the magmas show systematic compositional variationsfrom low-K to calc-alkaline and then shoshonitic. This spatialgeochemical variation, characterized by southwesterly increasein potassium and incompatible trace elements, appears to besubparallel to the southwestern part of the modern Ryukyu subductionsystem. Sr–Nd isotope ratios of the NTVZ volcanic rocks(87Sr/86Sr  相似文献   

9.
Field relationships, petrography and chemistry (including selected trace elements) of an occurrence of high-K diorite from Yeoval, N.S.W., Australia, are described. The Yeoval diorite complex is a calc-alkaline suite of rocks ranging from gabbros through diorites to granites with an association of fine-grained types. The dominant type of diorite is high in potassium (>2% K2O) and their classification is based mainly on chemical data rather than conventional petrography. As such the high-K diorites may be correlated with the high-K andesites of orogenic regions. Comparisons with occurrences of high-K andesites are made. Data are presented to show that the gabbros and diorites are genetically related whereas no relation between the diorites and granites can be established.  相似文献   

10.
鲁西中生代高镁闪长岩的地球化学特征及其成因探讨   总被引：9，自引：2，他引：9  
鲁西中生代侵入岩包括辉长岩,闪长岩,花岗闪长岩和花岗岩,以闪长岩最为常见。莱芜和沂南等地的闪长岩具有高Mg#(0.45～0.69),Cr(<278μg/g)的特点,并富集大离子亲石元素(LILE)和亏损高场强元素(HFSE),其总体成分特点类似于北美苏必利尔省的太古代高镁闪长岩和产于现代俯冲带的高镁安山岩。不过鲁西高镁闪长岩的HREE含量相对较高(Yb=1.1～1.9μg/g),La/Yb比值相对较低(6.7～20),其成分更接近于Piip型高镁安山岩。鲁西高镁闪长岩代表了华北地台早期拉张环境下的岩浆活动,可能是受深俯冲扬子大陆下地壳释放的埃达克质熔体交代的岩石圈地幔直接熔融的产物。  相似文献   

11.
墨西哥中新生代岩浆作用与太平洋板块向东俯冲消减作用及晚白垩-始新世的拉腊米期造山运动有关,岩浆作用控制了矿床的分布规律。文章通过综合分析大量墨西哥中新生代岩浆岩和矿床资料,讨论了岩浆活动规律及构造活动和成矿作用的关系。墨西哥主要有5个岩浆活动时期,分别为晚古生代岩浆作用、早-中侏罗世岩浆作用、白垩世岩浆作用、古近纪岩浆作用、中新世岩浆作用。墨西哥的成矿作用主要与拉腊米期岩浆活动有关(约80 Ma—40 Ma),中新生代的矿床明显分成晚侏罗世(J3)、早白垩世(K1)、晚白垩世(K2)、古新世(E1)、始新世(E2)、渐新世(E3)、中新世(N1)等地质时期。古太平洋板块、法拉隆板块和科科斯板块等三大板块俯冲消减形成3个俯冲成矿系列,即从沿海到内陆依次发育有IOCG型铁铜金成矿带→斑岩型铜钼金成矿带→浅成低温热液型银金多金属成矿带,分别代表太平洋古板块、法拉隆板块和科科斯板块向北美板块从俯冲挤压到碰撞后伸展的岩浆成矿环境。  相似文献   

12.
The Upper Proterozoic volcanism of northwestern Africa is characterized by the predominance of calc-alkaline rocks. Volcanics with tholeiitic affinities and alkali basalts are rare. The geochemistry and the relative proportions of calc-alkaline rocktypes in the Silet zone (Algeria) and the Ouarzazate formation (Morocco) are similar to those of recent island arc suites where basalts are most abundant while in the Tassendjanet and Gara Akofo zones (Algeria) they resemble contintal margin volcanic suites with a predominance of andesites. The volcanic rocks have undergone low-grade metamorphism which strongly affected alkali and alkali-earth elements and also to a smaller degree, the less mobile elements such as REE, Zr, Hf, Nb, and P. The geochemistry of the calc-alkaline rocks point to a complex origin involving low-pressure fractional crystallization, crustal contamination and derivation from a source already enriched in LILE.  相似文献   

13.
卡拉先格尔斑岩铜矿带位于我国新疆北部,大地构造位于中亚成矿域的中段、西伯利亚克拉通南缘与华北-塔里木克拉通北缘增生造山带的接合部位,夹于北西向额尔齐斯-玛因鄂博断裂带和北北西向可可托海-二台断裂带的交汇处。研究发现卡拉先格尔斑岩铜矿带在成矿构造地质、矿石组构、元素组合和成矿期次等方面表现出多期改造与叠加成矿的特征。在前期区域成矿背景、典型矿床研究的基础上,本文总结了卡拉先格尔斑岩铜矿带的构造演化与成矿过程:在中-晚泥盆世,卡拉先格尔斑岩铜矿带处于与俯冲有关的岛弧构造背景,有两期中酸性斑岩侵入与Cu-Au-Mo矿化作用;早石炭世时,区域处于碰撞造山阶段,NW向韧性剪切变形造成原斑岩中的矿化发生迁移与再定位,片理构造发育处局部得到富集;晚石炭世到二叠纪是后碰撞伸展阶段,形成了卡拉先格尔斑岩铜矿带一系列张性构造和叠加的脉状矿化;进入中生代后,常见热液脉状铜矿化充填叠加到早期矿化之上,但同时本矿带遭受强烈的抬升与剥蚀作用。  相似文献   

14.
ＳＵＰＲＡ ＳＵＢＤＵＣSEDIMENTARY, MAGMATIC AND TECTONIC CONSTRAINTS ON THE FORMATION OF THE YULONG SUPPER0-LARGE PORPHYRY COPPER POLYMETAL DEPOSIT, EAST TIBET  相似文献   

15.
满都拉地区地处达茂旗—白乃庙Cu-Au多金属成矿带,区内地层主要为古生界及中新生界,断裂构造主要为NE向、NW向及近WE向,岩浆岩以华力西晚期为主。区内铜矿床类型较丰富,有斑岩型、热液型和火山块状硫化物型。铜矿床主要产于上石炭统本巴图组及下二叠统大石寨组中,受NW向及近EW向断裂控制,与华力西岩浆活动密切相关。文章认为区域上近EW向的上石炭统—下二叠统火山岩-碎屑岩-碳酸盐岩系,是本区的最佳找矿地段,华力西晚期岩浆岩及其与地层的接触带是找矿的重要标志。  相似文献   

16.
The formation of the eastern Pontides orogenic belt has been widely assigned to a northward subduction of the Neotethyan oceanic slab during the late Mesozoic–Cenozoic. Here we provide an alternate model based on new geological, geochemical and isotopic data. The magmatic activity in the far south of the belt started in the early Campanian with shoshonitic trachyandesites and associated pyroclastics. This sequence is covered by the late Campanian–early Maastrichtian reefal limestones and another stage of high-K volcanism represented by analcimized leucite-rich ultrapotassic rocks of the Maastrichtian–early Paleocene (?) ages. The shoshonitic and ultrapotassic rocks, with K2O contents ranging from 0.26 to 6.95 wt.%, display broadly similar rare earth and multi-element distribution patterns. Both rock types are enriched in LILE and LREE and depleted in HFSE (Nb, Ta and Ti), suggesting a subduction-enriched mantle source for the magma generation. Subsequently, during the late Paleocene, a stage of acidic magmatism (SiO2 of 53.25–73.61 wt.%) that shows adakitic geochemical characteristics including high Sr/Y (46–416) and La/Yb (11–51) and low Y (2.6–12.2 ppm), is documented characterized by melting of a mafic source such as the MORB crust with garnet in the residue. The adakitic magmatism began at ~ 56 Ma and migrated toward the north through time, culminating with porphyritic andesites (~ 47 Ma) that were emplaced in the Gumushane–Bayburt line and its vicinity. North of this line, coeval magmas show typical calc-alkaline nature and continued to develop toward further north until the middle to late Eocene. Based on the spatial and temporal variations in the magmas generated in the eastern Pontides orogenic belt, we propose a new geodynamic model to explain the tectonomagmatic evolution of these rocks and correlate the adakitic magmatism to ridge subduction and slab window process within a south-dipping subduction zone. Our model is in contrast to the previous proposals which envisage partial melting or delamination of thickened lower continental crust due to the collision in the south during the Paleocene–Eocene.  相似文献   

17.
The basement rocks of Abu Marawat area comprise serpentinites (oldest), metavolcanics and their equivalent pyroclastics, intrusive metagabbro–diorite complex, synkinematic granitoids, Hammamat sediments and basic intrusion (youngest). Remote sensing ETM+ data of Abu Marawat area were analyzed, and band ratios technique was applied to discriminate between different varieties of these basement rocks. Serpentinites are represented by lensoidal bodies tectonically incorporated in the metavolcanics. On band ratio 5/7 image, they are characterized by very bright image signature. The metavolcanics comprise basalts, andesite and subordinate dacites together with their equivalent pyroclastics. They were regionally metamorphosed up to the greenschist facies and exhibit dark grey image signatures on band ratio 5/7 image. The metagabbro–diorite complex is made up of metagabbros, diorites and quartz diorites, whereas the synkinematic granitoids are formed of tonalites and granodiorites. The band ratio 5/7 image illustrates tonalites with dark image signature, whereas metagabbro–diorites and granodiorites exhibit grey image signature. The metavolcanic suites are of island arc setting, where metabasalts are of tholeiitic affinity, while the meta-andesites and metadacites are of calc-alkaline character. The metagabbroic and granitoid rocks are of I-type, calc-alkaline affinity and were formed in arc tectonic setting. They are enriched in LIL elements and depleted in Nb and HFS elements, a characteristic feature of subduction-related magmatism. The regular variation trends among the major and trace elements as well as the coincidence of the plotted samples favor the assumption that they are comagmatic and formed by processes such as fractional crystallization.  相似文献   

18.
西藏冲江大型斑岩铜(钼金)矿床的发现及意义   总被引：28，自引：3，他引：25  
冲江斑岩铜(金钼) 矿床是近年来在冈底斯造山带中寻找斑岩铜矿最先取得突破的一个大型矿床.矿化、蚀变具中心式、面型分布特点, 其中钾硅化带大体上与强铜矿化带相对应.根据ICPMS测试、辉钼矿Re-Os及SHRIMP锆石U-Pb测年结果, 含矿斑岩高钾富碱过铝, 强烈富集轻稀土(LREE/HREE为8.56~ 23.1), 无Eu异常(平均1.001), 具有微弱的负Ce异常(平均0.84), 微量元素显示Ⅰ型和A型花岗岩的过渡特征, 反映斑岩岩浆作用与拆沉作用及其伴生的软流圈物质上涌有关.矿床形成于中新世(1 4~ 1 6Ma) 陆内造山体制向伸展走滑体制转换的过渡时期   相似文献   

19.
The Yamansu belt,an important tectonic component of Eastern Tianshan Mountains,of the Central Asian Orogenic Belt,NW China hosts many Fe-(Cu)deposit.In this study,we present new zircon U-Pb geochronology and geochemical data of the volcanic rocks of Shaquanzi Formation and diorite intrusions in the Yamansu belt.The Shaquanzi Formation comprises mainly basalt,andesite/andesitic tuff,rhyolite and sub-volcanic diabase with local diorite intrusions.The volcanic rocks and diorites contain ca.315-305 Ma and ca.298 Ma zircons respectively.These rocks show calc-alkaline affinity with enrichment in large-ion lithophile elements(LILEs),light rare-earth elements(LREEs),and depletion in high field strength elements(HFSEs)in primitive mantle normalized multi-element diagrams,which resemble typical back-arc basin rocks.They show depleted mantle signature with ε_(Nd)(t)ranging from+3.1 to +5.6 for basalt;+2.1 to+4.7 for andesite;-0.2 to+1.5 for rhyolite and the ε_(Hf)(t)ranges from-0.1 to +13.0 for andesites;+5.8 to +10.7 for andesitic tuffs.We suggest that the Shaquanzi Formation basalt might have originated from a depleted,metasomatized lithospheric mantle source mixed with minor(3-5%)subduction-derived materials,whereas the andesite and rhyolite could be fractional crystallization products of the basaltic magma.The Shaquanzi Formation volcanic rocks could have formed in an intracontinental back-arc basin setting,probably via the southward subduction of the Kangguer Ocean beneath the Middle Tianshan Massif.The Yamansu mineralization belt might have undergone a continental arc to back-arc basin transition during the Late Carboniferous and the intra-continental back-arc basin might have closed in the Early Permian,marked by the emplacement of dioritic magma in the Shaquanzi belt.  相似文献   

20.
龚银杰 《地质与勘探》2014,50(5):902-909
武当-桐柏-大别成矿带可分为南秦岭造山带、北淮阳构造带、桐柏-大别构造带三个二级构造单元,在南秦岭造山带广泛分布变质热液型铜矿,北淮阳构造带内产出VMS型、岩浆熔离型及斑岩型铜矿,桐柏-大别构造带则分布有岩浆热液型和矽卡岩型铜矿。构造单元的性质对区内产出的铜矿类型具有较强的控制作用。变质热液型铜矿主要与浅变质作用有关,变质流体以断层为运移通道并最终就位于黑色岩系内的次级断层。VMS型、岩浆熔离型、斑岩型铜矿与岩浆作用密切相关,产出在岩体内部及与围岩的接触带。岩浆热液型及矽卡岩型铜矿形成于岩浆作用晚期阶段,分布在岩体与围岩接触带及附近构造裂隙带等部位。  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号