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| 1 | 华北岩石圈减薄与克拉通破坏研究的主要学术争论显示文摘华北岩石圈减薄是近十年来国内外研究的热门课题,但关于岩石圈减薄的具体时间、减薄幅度、空间分布范围、机制及其构造控制因素,多有争论。本文对上述问题进行了全面的回顾与讨论,内容包括:(1)是克拉通破坏还是岩石圈减薄;(2)古生代以来华北克拉通岩石圈地幔时代与壳幔解耦;(3)岩石圈减薄与克拉通破坏发生的时间;(4)岩石圈减薄的垂向幅度;(5)克拉通破坏在中国东部的空间分布;(6)克拉通破坏机制;(7)克拉通破坏的地球动力学原因;(8)华北克拉通破坏在世界上的特殊性等。文后,汇编了近10余年来华北岩石圈减薄与克拉通破坏研究的重要文献。 | 吴福元 徐义刚 高山 郑建平 | 2008 | 岩石学报2008，24，6： | 410 |
| 2 | 胶东三山岛北部海域超大型金矿床的发现及其构造-岩浆背景显示文摘胶东是我国最重要的黄金基地,近年来深部和海域隐伏区找矿又取得重大突破。尤其是,在莱州三山岛北部发现了海域超大规模金矿床。这一矿床与位于其南侧的三山岛矿区的深部主矿体相互连接,实际上为同一矿体,矿体全长超过3km,最大斜深超过1.7km,金资源总量超过500t,是我国规模最大的单一金矿体。矿床赋存于三山岛断裂下盘,为破碎带蚀变岩型金矿。其规模最大的4号矿体,赋存标高-796^-1736m,矿体走向长1446m,倾向最大延深1072m,平均厚度30.91m,平均品位5.23g/t。矿床由浅部矿体群和深部矿体群组成,二者均分布于控矿断裂倾角平缓和由陡变换的转折部位,构成由浅部至深部的台阶式分布特征,称之为阶梯式成矿模式。浅部第一台阶矿体赋存于-600m标高深度以上,矿体倾角25°~50°;深部第二台阶矿体赋存于-1000m标高以下,矿体倾角35°~40°。第一台阶与第二台阶的矿化特征有差异,后者矿体资源量多、规模大、厚度厚、品位高。控矿断裂——三山岛断裂的产状变化大,沿走向S形拐弯特征明显,沿倾向总体上显示浅部倾角陡深部倾角缓的铲式特点,且呈现倾角陡、缓交替变化规律,形成阶梯式断层。断裂下盘变形强,构造带厚度大;沿倾斜方向由浅部至深部,断裂带宽度变大、韧性变形特征增强、成矿空间增大,矿体厚度增大。这些特征指示,三山岛断裂具有铲式正断层性质。三山岛断裂的形成可能与郯庐断裂活动有关,郯庐断裂于早白垩世发生左行走滑时,在其东侧产生SEE向的伸展作用,形成了包括三山岛断裂在内的胶东地区的伸展构造。胶东侏罗—白垩纪岩浆活动强烈,玲珑型花岗岩、郭家岭型花岗岩、伟德山型花岗岩、崂山型花岗岩的地球化学特征研究表明,该区经历了由华北-扬子构造体系向欧亚-太平洋构造体系和由挤压机制向伸展机制的转换,由EM1型富集地幔向EM2型富集地幔演变。金矿的同位素年龄与壳幔混合源伟德山型花岗岩及相关中基性脉岩的形成时代一致,均形成于早白垩世。早白垩世岩浆活动在金成矿中起到了'热机'作用,使围岩中的金活化,并将地幔中的金携带上来,提供了部分成矿物质。白垩纪,中国东部软流圈上涌,构造岩浆活动强烈。在胶东地区,受早白垩世壳幔混合型大规模深部岩浆热隆影响,侏罗纪形成的壳源型玲珑岩基强烈隆升,其上覆的变质岩层发生大幅度拆离滑脱,形成拆离断层,三山岛断裂、焦家断裂和招平断裂均是热隆-伸展体制下的铲形下滑断裂,属拆离断层的组成部分。这种热隆-伸展构造为金矿成矿提供了有利条件,岩浆活动为金矿形成提供了适宜的物源、热源和流体,伸展拆离构造为金矿成矿提供了有利空间,构造、岩浆、流体的耦合造成了胶东型金矿大规模成矿作用。 | 宋明春 张军进 张丕建 杨立强 刘殿浩 丁正江 宋英昕 | 2015 | 地质学报2015，89，2： | 98 |
| 3 | On the timing and duration of the destruction of the North China Craton显示文摘The timing and duration of the destruction of the North China Craton, which is pivotal to understanding the destruction mechanism and its geodynamic controlling factors, still remain controversial. On the basis of the principles of magma genesis and evolution, first we outline magmatic expressions that can be related to cratonic destruction, then use magmatic and basin evolution trends to constrain the timescale of the lithospheric thinning in North China. The main conclusions include: (1) the thinning of the lithosphere beneath the North China Craton might have started, at least locally, since late Carboniferous-late Triassic, attained its climax during the late Jurassic-early Cretaceous, and continued till the end of late Cretaceous-early Cenozoic. The destruction of the North China Craton was a relatively slow, rather than a dramatic process. (2) The weakened lithospheric zones along the margins and interiors of the craton played an important role in cratonic destruction, partly accounting for the heterogeneous pattern of cratonic destruction. (3) The tectonic factors that controlled the destruction of the North China Craton may be multiple. The late Carboniferous southward subduction of the Paleo-Asian plate and the late Triassic collision between North China and South China may have re-activated the craton by influencing the thermal and integral structure of the craton. The Pacific subduction underneath the eastern Asian continent played a determinant role in the cratonic destruction, governing the distribution patterns of post-Mesozoic basins and major tectonic configuration, temporal change of magmatism and formation of the North-South gravity lineament. | XU YiGang LI HongYan PANG ChongJin HE Bin | 2009 | Chinese Science Bulletin2009，54，19： | 70 |
| 4 | 胶东中生代动力学演化及主要金属矿床成矿系列显示文摘胶东处于古特提斯和太平洋两大成矿域的结合部位,经历了强烈的中生代构造岩浆活动和重要金属矿床成矿作用。本文通过对中生代各期岩浆活动背景、典型矿床成因类型的分析判别,结合区域地质构造特征,总结提出胶东中生代成岩成矿动力学演化主要受扬子板块、华北板块碰撞造山作用和古太平洋板块俯冲作用影响,并可划分为晚三叠世陆陆碰撞造山期,中侏罗世被动陆缘向活动陆缘转换、地壳增生期,早白垩世早期地壳增生向垮塌转换期,早白垩世中期岩石圈大规模拆沉、壳幔强烈作用期,早白垩世晚期陆缘弧俯冲作用期,和晚白垩世早期弧后岩石圈强烈伸展期六个演化阶段,分别对应着区域~205Ma、160~155Ma、135~125Ma、125~115Ma、115~100Ma、100~90Ma等六期主要金及多金属成矿作用;形成的贵金属及有色金属矿床具有较为明显的时空分布规律,大致包括6个矿床成矿系列,分为9个亚系列和16个矿床式。自西向东,可划分出莱州西部、招远-平度、栖霞-蓬莱-福山、胶莱盆地东北缘、牟平-乳山、文登-威海、荣成等7个贵金属、有色金属成矿区(带)。区内造山型金矿仍是找矿的重点,斑岩型有色金属矿床可望取得突破,中低温热液脉型多金属矿床应受到充分重视。 | 丁正江 孙丰月 刘福来 刘建辉 彭齐鸣 纪攀 李碧乐 张丕建 | 2015 | 岩石学报2015，31，10： | 62 |
| 5 | 辽东半岛小黑山岩体成因及其地质意义:锆石U-Pb年龄和铪同位素证据显示文摘小黑山岩体位于辽东半岛南部,由变形的闪长岩、花岗闪长岩、花岗岩组成。锆石LA—ICPMSU—Pb年代学研究表明,上述三类岩石的侵位时代分别为170~174Ma、174±1Ma和177±2Ma;后期花岗质伟晶岩脉的侵位时代为175±1Ma。这些年龄在误差范围内基本相同,反映了小黑山岩体是一个侏罗纪侵位的杂岩体。岩石地球化学、Sr—Nd同位素和锆石铪同位素组成研究表明,小黑山岩体主要来源于高压下古老下地壳物质的部分熔融,慢源岩浆不仅为地壳物质的部分熔融作用提供了热量,而且直接参与了花岗岩的成岩作用。结合区域地质资料表明,小黑山岩体乃至华北东部侏罗纪花岗质岩浆作用是古太平洋板块向西俯冲、地壳增厚,进而引发下地壳物质部分熔融的结果。 | 杨进辉 吴福元 柳小明 谢烈文 杨岳衡 | 2007 | 矿物岩石地球化学通报2007，26，1： | 41 |
| 6 | Mesozoic mafic magmatism in North China:Implications for thinning and destruction of cratonic lithosphere显示文摘The North China Craton(NCC) has been thinned from >200 km to <100 km in its eastern part. The ancient subcontinental lithospheric mantle(SCLM) has been replaced by the juvenile SCLM in the Meoszoic. During this period, the NCC was destructed as indicated by extensive magmatism in the Early Cretaceous. While there is a consensus on the thinning and destruction of cratonic lithosphere in North China, it has been hotly debated about the mechanism of cartonic destruction.This study attempts to provide a resolution to current debates in the view of Mesozoic mafic magmatism in North China. We made a compilation of geochemical data available for Mesozoic mafic igneous rocks in the NCC. The results indicate that these mafic igneous rocks can be categorized into two series,manifesting a dramatic change in the nature of mantle sources at ~121 Ma. Mafic igneous rocks emplaced at this age start to show both oceanic island basalts(OIB)-like trace element distribution patterns and depleted to weakly enriched Sr-Nd isotope compositions. In contrast,mafic igneous rocks emplaced before and after this age exhibit both island arc basalts(IAB)-like trace element distribution patterrs and enriched Sr-Nd isotope compositions.This difference indicates a geochemical mutation in the SCLM of North China at^121 Ma. Although mafic magmatism also took place in the Late Triassic, it was related to exhumation of the deeply subducted South China continental crust because the subduction of Paleo-Pacific slab was not operated at that time. Paleo-Pacific slab started to subduct beneath the eastern margin of Eruasian continent since the Jurrasic. The subducting slab and its overlying SCLM wedge were coupled in the Jurassic, and slab dehydration resulted in hydration and weakening of the cratonic mantle. The mantle sources of ancient IAB-like mafic igneous rocks are a kind of ultramafic metasomatites that were generated by reaction of the cratonic mantle wedge peridotite notonly with aqueous solutions derived from dehydration of the subducting Paleo-Pacific oceanic crust in the Jurassic but also with hydrous melts derived from partial melting of the subducting South China continental crust in the Triassic. On the other hand, the mantle sources of juvenile OIB-like mafic igneous rocks are also a kind of ultramafic metasomatites that were generated by reaction of the asthenospheric mantle underneath the North China lithosphere with hydrous felsic melts derived from partial melting of the subducting Paleo-Pacific oceanic crust. The subducting Paleo-Pacific slab became rollback at^144 Ma. Afterwards the SCLM base was heated by laterally filled asthenospheric mantle, leading to thinning of the hydrated and weakened cratonic mantle. There was extensive bimodal magmatism at 130 to 120 Ma, marking intensive destruction of the cratonic lithosphere. Not only the ultramafic metasomatites in the lower part of the cratonic mantle wedge underwent partial melting to produce mafic igneous rocks showing negative ε_(Nd)(t) values, depletion in Nb and Ta but enrichment in Pb, but also the lower continent crust overlying the cratonic mantle wedge was heated for extensive felsic magmatism. At the same time, the rollback slab surface was heated by the laterally filled astheno spheric mantle, resulting in partial melting of the previously dehydrated rocks beyond rutile stability on the slab surface. This produce still hydrous felsic melts, which metasomatized the overlying astheno spheric mantle peridotite to generate the ultramafic metasomatites that show positive ε_(Nd)(t) values, no depletion or even enrichment in Nb and Ta but depletion in Pb. Partial melting of such metasomatites started at^121 Ma, giving rise to the mafic igneous rocks with juvenile OIB-like geochemical signatures. In this context, the age of ~121 Ma may terminate replacement of the ancient SCLM by the juvenile SCLM in North China. Paleo-Pacific slab was not subducted to the mantle transition zone in the Mesozoic as revealed by moder seismic tomography, and it was subducted at a low angle since the Jurassic, like the subduction of Nazca Plate beneath American continent. This flat subduction would not only chemically metasomatize the cratonic mantle but also physically erode the cratonic mantle. Therefore, the interaction between Paleo-Pacific slab and the cratonic mantle is the first-order geodynamic mechanism for the thinning and destruction of cratonic lithosphere in North China. | Yongfei ZHENG Zheng XU Zifu ZHAO Liqun DAI | 2018 | Science China Earth Sciences2018，61，4： | 47 |
| 7 | 洛南-卢氏地区与铁铜多金属矿床有关的中酸性侵入岩锆石U-Pb定年及其地质意义显示文摘位于华北克拉通南缘的洛南-卢氏地区出露大量与成矿密切相关的中酸性小侵入体,主要岩性包括石英闪长岩和钾长花岗斑岩,其中大部分是该区矽卡岩型和斑岩型铁-铜-钼-铅锌多金属矿床的成矿母岩,但迄今为止对这些岩体的侵位时代及岩浆活动构造背景的研究还很薄弱。文章利用激光剥蚀电感耦合等离子体质谱法对该区典型侵入岩(夜长坪、柳关、后瑶峪、圪老湾、蒲阵沟、黑山及杨沟岩体)进行了详细的锆石U-Pb定年。结果表明这些岩体的侵位时代介于158~131 Ma之间,是华北克拉通南缘晚侏罗世—早白垩世期间大规模岩浆活动的产物。定年结果还表明,闪长岩类岩石的侵位时间很短,主要集中在晚侏罗世末期〔(150±1)^(149±1)Ma〕,而花岗斑岩侵位则断续持续了近30 Ma〔(158±2)^(131±1)Ma〕。锆石U-Pb定年还首次为洛南-卢氏地区矽卡岩型和斑岩型铁铜钼多金属矿床的成矿时代提供了准确限定,表明这些矿床形成于晚侏罗世—早白垩世。综合前人资料,认为华北克拉通南缘燕山期岩浆活动始于晚侏罗世初,在早白垩世早期达到顶峰,并于早白垩世末期结束。华北克拉通南缘洛南-卢氏地区晚侏罗世—早白垩世中酸性侵入岩形成于强烈的伸展构造背景,是华北克拉通破坏的浅部地质响应,其空间分布和侵位时代为了解华北克拉通南缘岩石圈减薄的时空分布特征提供了重要依据。 | 胡浩 李建威 邓晓东 | 2011 | 矿床地质2011，30，6： | 37 |
| 8 | 胶东郭城地区脉岩类岩石地球化学特征及成岩构造背景显示文摘胶东海阳郭城地区高密度、高频率产出多种脉岩类岩石,主要包括辉绿岩(βμ)、煌斑岩(χ)、闪长岩(δ)、闪长玢岩(δμ)、花岗斑岩(νπ)、正长斑岩(ξπ)等,且脉岩与金矿密切伴生。为了探讨该区脉岩的成因、源区性质及成岩构造背景,本文通过岩石学和地球化学研究表明,该区脉岩总体属于钾质钙碱性系列,高Mg、Fe、Al,低Ti,来自深部同一岩浆源区,富集LILE和LREE,相对亏损HFSE,为弥散状角闪石相橄榄岩富集地幔部分熔融作用(9.52%)的产物。成岩过程中岩浆经历了橄榄石、单斜辉石、角闪石等暗色矿物以及少量斜长石的分离结晶作用,岩浆侵位过程中没有受到地壳物质的混染。脉岩形成于大陆板内环境,同时具有大陆弧钙碱性玄武岩的地球化学特征,暗示了在构造背景上与太平洋板块的俯冲作用及晚侏罗世至早白垩世华北地块岩石圈的区域性伸展—减薄机制有关,可能与郯庐断裂带在该时期的左行走滑引张关系更为密切。 | 谭俊 魏俊浩 杨春福 冯波 谭文娟 郭大招 | 2006 | 地质学报2006，80，8： | 31 |
| 9 | 滇西北衙煌斑岩的岩石成因及动力学背景:年代学、地球化学及Sr-Nd-Pb-Hf同位素约束显示文摘北衙地区出露有多条煌斑岩脉,锆石LA-ICP-MS定年表明岩脉的侵位时间为34.96±0.66Ma,与滇西地区新生代岩浆活动的高峰期一致。岩石地球化学分析表明北衙煌斑岩具有高钾(K2O/Na2O为1.03~10.38)、富碱((K2O+Na2O)(平均7.55%)、高Mg#(30~73),富集大离子亲石元素(LILE)(K、Rb、Ba)和轻稀土元素(LREE),亏损高场强元素(HFSE)和重稀土元素的特征。同位素以高(87Sr/86Sr)i(0.70615~0.70825),低εNd(t)(-5.3^-1.3),富集放射性Pb(208Pb/204Pb=38.542~38.856,207Pb/204Pb=15.553~15.617,206Pb/204Pb=18.482~18.612)为特征,176Hf/177Hf为0.282631~0.282882,εHf(t)为-4.2~1.8。岩石地球化学和同位素特征表明该煌斑岩源自经俯冲板片交代富集了的岩石圈地幔,推测源区可能为含金云母的尖晶石相橄榄岩地幔与石榴石相橄榄岩地幔的过渡区,起源深度大致在75~85km,明显高于同区富碱斑岩的起源深度。构造和地球动力学背景分析表明,该煌斑岩以及滇西地区新生代岩浆作用都是对印度-欧亚大陆强烈碰撞的响应,都产在强烈伸展的动力学背景下,为岩石圈减薄的产物。 | 和文言 莫宣学 喻学惠 董国臣 和中华 黄雄飞 李小伟 姜丽莉 | 2014 | 岩石学报2014，30，11： | 29 |
| 10 | 冈底斯明则-程巴斑岩-夕卡岩型Mo-Cu矿床成矿时代与含矿岩石成因显示文摘冈底斯东南缘克鲁-冲木达矿带以发育渐新世斑岩-夕卡岩型Mo-W-Cu成矿作用而有别于冈底斯中新世斑岩-夕卡岩型Cu-Mo-Au矿带,但是对渐新世成矿岩石类型及成因以及渐新世与中新世斑岩成矿作用存在差异的原因尚不清楚,严重制约了该带矿产资源潜力评价。为此,本文选择矿带内程巴斑岩型Mo矿床及明则夕卡岩型Cu矿床开展了成岩与成矿年代学及含矿岩石成因研究。明则矿区与夕卡岩矿化有关的二长岩的结晶年龄为30.4±0.6Ma,表明夕卡岩矿化时代约30Ma,这与程巴斑岩型Mo矿床矿石中辉钼矿Re-Os同位素分析所揭示的约30Ma矿化时代一致。明则二长岩的SiO2含量为55%~57%,K2O含量为2.7%~5.0%,属于钾玄岩,具有较高的MgO含量(3.5%~6.9%)、Mg#值(57.6~67.2)以及相容元素含量(Cr=34×10-6~379×10-6;Ni为48×10-6~116×10-6)。而程巴花岗闪长岩的SiO2含量为65%~67%,K2O含量为3.2%~4.1%,属于高钾钙碱性岩,具有较低的MgO含量(1.7%~2.1%)、Mg#值(49.5~51.1)以及相容元素含量(Cr=20×10-6~39×10-6;Ni为16×10-6~25×10-6)。二长岩和花岗闪长岩均显示富集轻稀土元素与大离子亲石元素,亏损高场强元素,具有弱的Eu负异常,但二长岩的REE含量明显高于花岗闪长岩,且具有较低的Sr/Y比值(24~49),后者Sr/Y比值为54~68。两种岩石均具有类似的Hf同位素组成,二长岩的εHf(t)值为+2.8~+6.8,花岗闪长岩εHf(t)值为+4.2~+6.1。综合分析表明,二长岩是受大洋板片流体交代的富集岩石圈地幔部分熔融的产物,而花岗闪长岩是增厚的新生下地壳部分熔融的产物,二者在形成过程中可能发生了幔源镁铁质岩浆与壳源长英质岩浆的混合作用,这种壳幔相互作用导致区域斑岩-夕卡岩型Cu-Mo矿化,但由于该区隆升剥蚀强烈,上部的斑岩型Cu矿体基本被剥蚀而没有保存下来,因此现今表现为斑岩型Mo矿床。 | 孙祥 郑有业 吴松 游智敏 伍旭 李淼 周天成 董俊 | 2013 | 岩石学报2013，29，4： | 28 |
| 11 | LA-ICP-MS zircon U-Pb dating and phenocryst EPMA of dikes, Guocheng, Jiaodong Peninsula: Implications for North China Craton lithosphere evolution显示文摘Widespread dike swarm, including diorite-, monzonite-porphyry and lamprophyre, intruded in the al- tered breccia gold deposits along basin marginal faults, Guocheng, Jiaodong Peninsula. Petrography exhibits biotite enclaves in amphibole phenocrysts and the presence of acicular apatites in these dikes. Electron probe microanalyses (EPMA) show that the amphibole and clinopyroxene phenocryst’s mantle in diorite porphyry and lamprophyre respectively has sharply higher MgO (Mg#) and Cr2O3 contents in contrast to their cores. The plagioclase phenocryst in monzonite porphyry has reverse zoning. These results indicate that the magma mixing between mantle-derived mafic and crust-derived felsic magmas occurred in the original process of the dikes. Zircon cathodoluminescence (CL) images show well-developed magmatic oscillatory zones and the acquired LA-ICP-MS zircon U-Pb weighted mean 206Pb/238U ages are 114±2 Ma (MSDW=1.5) for monzonite porphyry (GS1) and 116±1 Ma (MSDW=0.8) for diorite porphyry (GS2), respectively. Earlier magmatic events in the northwest Jiaodong Peninsula represented by some inherited or captured zircons also occur in these dikes. Magmatic zircons from GS1 and GS2 display consistent chondrite-normalized REE patterns and Nb/Ta values, implying that they may share a similar or same source. HREE enrichment and obvious negative Eu anomalies of these zircons preclude garnet presented in their source. Our results, combined with preciously pub- lished data, indicate that dike intrusion and gold mineralization among quartz vein, altered tectonite and altered breccia gold deposits are broadly contemporaneous throughout the Jiaodong Peninsula. These also imply that the intensive crust-mantle interaction and asthenospheric underplating had oc- curred in the Early Cretaceous in the Peninsula, together with foundering of lower crust in the early Mesozoic, representing the different stages of lithosphere thinning in the North China Craton (NNC). | TAN Jun WEI JunHao GUO LingLi ZHANG KeQing YAO ChunLiang LU JianPei LI HongMei | 2008 | Science China Earth Sciences2008，51，10： | 23 |
| 12 | Destruction of North China Craton:Insights from temporal and spatial evolution of the proto-basins and magmatism显示文摘Temporal and spatial evolution of proto-basins and magmatism in the North China Craton might provide information of its destruction.Overall,the destruction of the North China Craton is a heterogeneous process of bottom upward and from margin toward interior,related to multiple interactions between the craton and its surrounding plates.The interior of craton would be initially destructed during the Early-Middle Jurassic.Subduction of the Paleo-Asian Ocean Plate may have destructed the northern margin of the North China Craton.Collision of the Yangtze Plate with the North China Craton is significant for the magmatic and tectonic activities during the Late Triassic-Middle Jurassic.Subductions of the Izanagi and Paleo-Pacific plates lead to the ultimate destruction of the North China Craton.Temporal and spatial evolution of the proto-basins and related magmatism in the North China Craton indicate that the dominant mechanism of the cratonic destruction may be thermal mechanical-chemical erosion. | LI HongYan | 2013 | Science China Earth Sciences2013，56，3： | 12 |
| 13 | 敦密断裂带白垩纪两期重要的变形事件显示文摘本文报道了敦密断裂带糜棱岩中黑云母^(40)Ar/^(39)Ar定年结果和大规模走滑-逆冲断裂的几何学、运动学特征及其形成时代,以便揭示断裂带两期变形事件的构造属性。黑龙江省密山市花岗质糜棱岩中黑云母^(40)Ar/^(39)Ar加权平均年龄为132.2±1.2Ma,它是敦密断裂带经历伸展事件的冷却年龄,也是东北亚大陆边缘在早白垩世Hauterivian期-Albian期发生强烈区域伸展作用的产物。密山市至辽宁省清原县系列大型走滑-逆冲断层和断层相关褶皱揭示出在晚白垩世晚期-末期发生右旋走滑-逆冲事件,该事件规模大,影响范围广,导致整个断裂带遭受到强烈改造,形成对冲式断裂系统。将研究区走滑-逆冲断裂与山东省郯庐断裂带中段挤压构造对比,认为郯庐断裂带北段和中段在晚白垩世末期都发生了强烈的走滑-逆冲事件,它们具有相同的构造特征和构造属性。 | 孙晓猛 张旭庆 何松 王璞珺 郑涵 万阔 李多姿 | 2016 | 岩石学报2016，32，4： | 7 |
| 14 | Geothermal Evidence of the Mesozoic and Cenozoic Lithospheric Thinning in the Liaohe Depression显示文摘The Liaohe (辽河) depression is an important part of the Bohai (渤海) Bay Basin, and the Bohai Bay Basin located in the center of lithospheric destruction and thinning in the eastern North China Craton. The North China lithospheric thinning activities have been verified from evidences of structural geology, petrology, geochemistry and geophysics, but there are still some controversies on their timing, mechanism and controlling factors. The sedimentary basin is a thin-bedded geologic unit with a limited distribution in the upper lithosphere, and its formation and evolution represent the shal-low response of the deep geodynamic process. Therefore, its thermal evolution is closely related to the deep dynamic conditions. In this article, the Mesozoic-Cenozoic thermal history of the Liaohe depression is reconstructed using the vitrinite reflectance and apatite fission track data. Meanwhile 'thermal' lithospheric thicknesses in the Mesozoic and Cenozoic are calculated using the geothermic method on the basis of the above thermal history results. The results show that the Liaohe depression has undergone the Cretaceous and Paleogene heat flow peaks, 81 and 83 mW/m2, respectively, corresponding to two strong rift movements. Accordingly, the depression has experienced two different levels of thinning processes in the Cretaceous and the Paleogene since the Mesozoic, and the 'thermal' lithospheric thicknesses were 60 and 50 km, respectively. This may reveal that the depression has experienced two large-scale destructions. The work may provide valuable geo-thermal evidence for initial revealing the time, process and stage of the lithospheric thinning in the Liaohe depression. | 左银辉 邱楠生 庞雄奇 常健 郝情情 高霞 | 2013 | Journal of Earth Science2013，24，4： | 7 |
| 15 | 中生代古太平洋板块俯冲诱发华北克拉通破坏的物质记录显示文摘华北克拉通破坏与古太平洋板块俯冲密切相关是当今学界的重要共识,但缺乏华北克拉通破坏峰期古太平洋板块俯冲的物质证据.为解决这一问题,本文对华北克拉通东北缘(辽东-吉南地区)中生代火山岩开展了详细的岩石学、锆石U-Pb年龄和Hf-O同位素、全岩地球化学和Sr-Nd-Hf同位素研究.研究发现,辽东-吉南地区中生代火山岩主要为玄武粗安岩-粗安岩-粗面岩和安山岩组合,形成于早白垩世(129~124Ma),均富集大离子亲石元素(Rb、Sr、Ba、Th等)和轻稀土元素、亏损高场强元素(Nb、Ta、Ti等),表明其来源于与俯冲相关的地幔源区.这些岩石具有不均一的同位素组成,其中,碱性玄武粗安岩-粗安岩-粗面岩具有富集的全岩Sr-Nd-Hf、锆石Hf同位素组成和与地幔类似的锆石O同位素,表明其母岩浆来源于同位素富集的岩石圈地幔的低程度部分熔融,而钙碱性安山岩则具有相对亏损的同位素组成(锆石εHf(t)高达+5.2)和高的锆石O同位素组成(δ18O=+8.1^+9.0‰),揭示它们来源于遭受俯冲流体/熔体交代的地幔源区,交代介质来源于俯冲到深部的低温热液蚀变洋壳.辽东-吉南地区早白垩世火山岩是由来源于富集地幔和交代地幔的两种不同性质的岩浆混合形成,利用锆石Hf-O同位素组成有效识别出的低温热液蚀变洋壳组分,为中生代古太平洋板块俯冲对华北克拉通破坏影响提供了确凿的物质记录和同位素证据. | 冯亚洲 杨进辉 孙金凤 张吉衡 | 2020 | 中国科学:地球科学2020，50，5： | 7 |
| 16 | 华北克拉通北缘张家口-宣化地区古生代-中生代岩浆构造活动与成矿作用显示文摘河北省张家口-宣化地区(张宣地区)位于华北克拉通北缘中段,区内自显生宙以来构造活动频繁,并产出大量岩浆岩和金矿床,是研究华北克拉通北缘岩浆-构造-成矿演化体系的重要对象。本文通过对张宣地区的水泉沟正长岩、响水沟似斑状花岗岩、井儿洼粗安岩-英安岩、象山花岗闪长岩、青羊沟黑云母二长花岗岩和张家口组流纹岩的锆石年龄、Lu-Hf同位素和地球化学组成进行研究,结合前人研究成果,获得区内古生代-中生代岩浆岩的侵位时期主要为海西期(峰值398Ma和373Ma)、印支期(峰值234Ma)和燕山期(峰值143Ma和130Ma)。张宣地区在古生代-中生代经历了古亚洲洋俯冲、华北克拉通破坏及古太平洋俯冲过程。早古生代时期,古亚洲洋向华北克拉通俯冲;到泥盆纪,白乃庙岛弧带和华北克拉通北缘发生弧陆碰撞,张宣地区处于弧陆碰撞后的伸展环境,富集地幔岩浆上涌并经历了地壳的同化混染和分离结晶的共同作用,形成大量碱性岩;二叠纪末期-三叠纪,各微陆块相互碰撞,张宣地区处于碰撞后伸展阶段,地幔岩浆引起加厚下地壳的部分熔融,基性、酸性岩浆混合,导致区内的基性岩与酸性岩共存;侏罗纪-白垩纪时期,华北克拉通发生减薄,形成区内大范围的侵入岩和火山岩。张宣地区产有大量金矿、铅锌矿、银矿及少量铜矿和钼矿,金矿集中产于宣化-崇礼-赤城交界处,而银铅锌多金属矿则成群成带环绕金矿化集中区分布。成矿时间主要为海西期和燕山期,印支期成矿尚未明确,但成矿潜力巨大。根据地质特征和同位素组成,可将张宣地区的金矿床划分为'东坪式'、'小营盘式'和'张全庄式'三类。古生代-中生代各时期岩浆活动对金成矿均有贡献,大部分金矿床与海西期和燕山期岩浆活动联系密切,多期次成矿及成矿叠加是形成张宣地区大量金矿床的重要因素。 | 甄世民 王大钊 白海军 贾儒雅 王江 查钟健 李阳 缪建普 | 2021 | 岩石学报2021，37，6： | 7 |
| 17 | Repeated modification of lithospheric mantle in the eastern North China Craton:Constraints from SHRIMP zircon U-Pb dating of dunite xenoliths in western Shandong显示文摘Four dunite xenoliths from the Tietonggou intrusion of western Shandong,China,were subjected to SHRIMP zircon U-Pb dating to constrain timing of the North China Craton(NCC) destruction,a topic of much controversy.Cathodoluminescence images revealed that 15 of the 18 zircon grains from the xenoliths display striped absorption.The rest showed oscillatory growth zoniation.All the zircons had variable contents of Th(49-3569 ppm;average,885 ppm) and U(184-5398 ppm;average,1277 ppm),and variable Th/U ratios(0.15-2.04).These zircon characteristics indicate a magmatic origin.The zircon age data can be divided into five groups:131-145,151-164,261-280,434-452,and 500-516 Ma.Group I(131-145 Ma) is consistent with timing of formation of the Tietonggou high-Mg diorites.Group II(151-164 Ma) is similar in age to Middle-Late Jurassic magmatism in the eastern NCC,which included both mantle-derived and intensive crust-derived magmatism.Group III(261-280 Ma) is similar in age to the Emeishan large igneous province,and Group IV(434-452 Ma) is similar in age to Paleozoic high-silica magmatism in the eastern NCC.Group V(500-516 Ma) may correspond to the global Pan-African event.Results indicate repeated modification of lithospheric mantle in the eastern NCC,and suggest that the most intensive modification occurred in the late Mesozoic(131-164 Ma). | YANG DeBin XU WenLiang GAO Shan XU YiGang PEI FuPing | 2012 | Chinese Science Bulletin2012，57，6： | 5 |
| 18 | Deformation characteristics and genesis of the Waziyu metamorphic core complex in western Liaoning of China显示文摘The Waziyu metamorphic core complex is situated at the eastern end of the Yanshan tectonic belt.The NNE-striking detachment ductile shear zone in the core complex lies between the Archean metamorphic basement and Fuxin-Yixian rift basin,dips NW gently,and shows corrugation folds.Exposure structures,microstructures,and quartz C-axis fabrics all indicate top-to-the WNW sense of shear,i.e.,ca.285°,for the shear zone.Estimates of the deformation temperatures(ca.550-250°C) demonstrate its mid-crustal origination and progressive deformation from deep to shallow levels.The northern segment of the shear zone shows relatively weak exhumation with exposures of low-temperature mylonites whereas its middle and southern segments have more intense uplifting with exposures of high-temperature mylonites.Biotite and muscovite 40 Ar/39 Ar ages,U-Pb dating results of zircon from dikes and plutons as well as formation ages of the supra-detachment basin all suggest the formation time of 135-100 Ma for the core complex.The formation was also associated with syntectonic emplacement of the Early Cretaceous Shishan pluton.The western margin of the core complex was truncated by the Sunjiawan-Shaohuyingzi brittle normal fault when it uplifted to shallow crust levels,and finally exhumed to near-surface levels.The core complex was developed by the rolling-hinge model under WNW-ESE extension during the Early Cretaceous peak destruction of the North China Craton.Ductile flow did not appear in the lower plate,therefore not supporting the low-crust gravitational collapse. | ZHANG BiLong ZHU Guang CHEN Yin PIAO XueFeng JU LinXue WANG HaoQian | 2012 | Science China Earth Sciences2012，55，11： | 4 |
| 19 | Material records for Mesozoic destruction of the North China Craton by subduction of the Paleo-Pacific slab显示文摘It is well known that the destruction of the North China Carton(NCC)is closely related to subduction of the Paleo-Pacific slab,but materials recording such subduction has not been identified at the peak time of decratonization.This paper presents data of whole-rock major and trace elements and Sr-Nd-Hf isotopes and zircon U-Pb ages and Hf-O isotopes for Mesozoic volcanic rocks from the Liaodong-Jinan region in the northeastern NCC,in order to trace the subduction-related materials in their source and origin.The Mesozoic volcanic rocks in the Liaodong-Jinan region are mainly composed of two series of rocks,including alkaline basaltic trachyandesite,trachyandesite and trachyte,and subalkaline trachyandesite and andesite.Zircon U-Pb dating yields eruption ages of 129–124 Ma for these rocks.The Early Cretaceous volcanic rocks are all enriched in LILEs(such as Rb,Sr,Ba and Th)and LREEs,depleted in HFSEs(such as Nb,Ta and Ti),indicating that they were originated from mantle sources that had been modified by subducted crustal materials.However,they have relatively heterogeneous and variable isotopic compositions.The alkaline basaltic trachyandesite,trachyandesite and trachyte have enriched whole-rock Sr-Nd-Hf and zircon Hf isotopic compositions and mantle-likeδ18O values,suggesting that they were derived from low-degree partial melting of an isotopically enriched lithospheric mantle source.In contrast,the subalkaline trachyandesite and andesite have relatively depleted isotopic compositions with zirconεHf(t)values up to+5.2 and heavy zircon O isotopic compositions with δ18O values of+8.1‰to+9.0‰,indicating that they were originated from a lithospheric mantle source that had been metasomatized by melts/fluids derived from the recycled low-T altered oceanic basalt.All of these geochemical features suggest that the Early Cretaceous volcanic rocks in the Liaodong-Jinan region would result from mixing of mafic magmas with different compositions.Such magmas were originated from the enriched lithospheric mantle and the young metasomatized mantle,respectively,with variable extents of enrichment and depletion in trace elements,radiogenic isotopes and O isotopes.Importantly,the identification of the low-T altered oceanic crust component in the origin of Early Cretaceous volcanic rocks by the zircon Hf-O isotopes provides affirmative isotopic evidence and direct material records for Mesozoic subduction of the Paleo-Pacific slab that induced decratonization of the North China Craton. | Yazhou FENG Jinhui YANG Jinfeng SUN Jiheng ZHANG | 2020 | Science China Earth Sciences2020，63，5： | 2 |
| 20 | 辽东青城子矿集区白云金矿床煌斑岩的岩石成因:年代学、地球化学与Pb、Hf同位素约束显示文摘【研究目的】白云金矿是辽东地区代表性的大型金矿床之一,通过厘清矿区内基性脉岩的形成时代、成因及其构造背景,有助于深化对区域构造演化过程及矿床成因的认识。【研究方法】本文基于矿床的野外地质特征,对与矿化有密切关系的煌斑岩开展了岩相学、年代学和地球化学研究。【研究结果】煌斑岩LA-ICP-MS锆石U-Pb年龄为(126.81±0.65)Ma,表明形成于早白垩世。岩石地球化学结果显示,煌斑岩属于碱性系列、钾玄质岩石,具有富镁(MgO=3.63%~4.07%,Mg#=54~60)、富钾(K_(2)O/Na_(2)O=1.26~3.47)、富碱(K_(2)O+Na_(2)O=4.41%~5.23%)的特征;富集大离子亲石元素(Rb、Th、U)和轻稀土元素,亏损高场强元素(Nb、Ta、Ti)和重稀土元素,具有典型的与俯冲有关的弧岩浆岩特征。同位素地球化学结果显示,煌斑岩富集放射性Pb同位素;锆石176Hf/177Hf为0.282117~0.282471,具有负的εHf(t)值(-20.80~-7.81),指示岩浆源区为受俯冲熔体/流体交代的富集岩石圈地幔。【结论】结合区域大地构造背景,白垩纪时,由于古太平洋板块俯冲后撤产生伸展拉张环境,软流圈地幔物质的上涌可能促使EMII型富集地幔的部分熔融而形成基性岩浆,并沿郯庐深大断裂带及其次一级断裂上侵形成白云矿区煌斑岩。因此,本区早白垩世基性岩浆活动是对该时期华北克拉通东部岩石圈减薄的响应。 | 贾宏翔 陈仁义 庞振山 林鲁军 李安 沙德铭 薛建玲 陈辉 | 2022 | 中国地质2022，49，5： | 2 |
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