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| 1 | 阿尔金山早古生代岩浆活动与金成矿作用显示文摘文章通过同位素稀释热电离质谱(ID_TIMS)锆石U_Pb法、Rb_Sr等时线法和钾长石40Ar/39Ar测年与MDD模拟得到的数据,分析了阿尔金山北缘地区花岗岩浆活动的主要时期、与阿尔金北缘大平沟金矿有关的花岗岩形成年龄、大平沟金矿可能的成矿时代以及剥露作用时代等问题,探讨了早古生代岩浆活动与金成矿作用之间的关系以及金矿床的剥露历史。Rb_Sr等时线法给出大平沟金矿石英流体包裹体等时线年龄为(487±21)Ma,与阿尔金山早古生代岩浆活动的时代一致,代表了大平沟金矿床的成矿年龄。大平沟金矿的剥露作用发生在早侏罗世拉配泉断裂伸展作用时期。 | 杨屹 陈宣华 George Gehrels 王小凤 秦红 陈正乐 杨风 陈柏林 李学智 | 2004 | 矿床地质2004，23，4： | 39 |
| 2 | 柴达木盆地东部基底花岗岩类岩浆活动的化学地球动力学显示文摘柴达木盆地东部是连接秦岭、祁连、昆仑三大造山带的关键构造部位,发育了以晚二叠世—中三叠世(P-T)花岗岩类为主的古特提斯域深成岩浆活动。岩石地球化学分析表明,柴达木盆地东部基底P-T花岗岩类形成于大洋环境,主要为I型花岗岩类。该期花岗岩类可分为两个时间演化系列,早期为钾长花岗岩—花岗闪长岩—英云闪长岩—闪长岩系列,晚期为碱性花岗岩—钾长花岗岩—花岗闪长岩系列,均具有与经典的鲍文反应系列相反(即反鲍文系列)的演化趋势,反映了深成岩浆的动态混合作用模式。Nd-Sr-Pb-O同位素组成特征说明,柴达木盆地东部基底P-T花岗岩类具有年轻地壳的特征,其来源主要与富集地幔EMⅡ源区有关,具明显的造山带与上地壳Pb同位素特征。柴达木盆地东部基底与西秦岭及扬子块体中生代花岗岩类的Pb同位素组成具有相似性,说明了柴达木盆地基底与扬子地块具有亲缘性。研究表明,来自地幔的基性岩浆底侵作用,以及幔源镁铁质岩浆与壳源长英质岩浆之间的混合作用,可能是柴达木盆地东部基底地壳生长的重要方式。 | 陈宣华 尹安 George GEHRELS 李丽 蒋荣宝 | 2011 | 地质学报2011，85，2： | 36 |
| 3 | Paleozoic and Mesozoic Basement Magmatisms of Eastern Qaidam Basin,Northern Qinghai-Tibet Plateau:LA-ICP-MS Zircon U-Pb Geochronology and its Geological Significance显示文摘The eastern margin of the Qaidam Basin lies in the key tectonic location connecting the Qinling,Qilian and East Kunlun orogens.The paper presents an investigation and analysis of the geologic structures of the area and LA-ICP MS zircon U-Pb dating of Paleozoic and Mesozoic magmatisms of granitoids in the basement of the eastern Qaidam Basin on the basis of 16 granitoid samples collected from the South Qilian Mountains,the Qaidam Basin basement and the East Kunlun Mountains.According to the results in this paper,the basement of the basin,from the northern margin of the Qaidam Basin to the East Kunlun Mountains,has experienced at least three periods of intrusive activities of granitoids since the Early Paleozoic,i.e.the magmatisms occurring in the Late Cambrian(493.1±4.9 Ma),the Silurian(422.9±8.0 Ma-420.4±4.6 Ma) and the Late Permian-Middle Triassic(257.8±4.0 Ma-228.8±1.5 Ma),respectively.Among them,the Late Permian-Middle Triassic granitoids form the main components of the basement of the basin.The statistics of dated zircons in this paper shows the intrusive magmatic activities in the basement of the basin have three peak ages of 244 Ma(main),418 Ma,and 493 Ma respectively.The dating results reveal that the Early Paleozoic magmatism of granitoids mainly occurred on the northern margin of the Qaidam Basin and the southern margin of the Qilian Mountains,with only weak indications in the East Kunlun Mountains.However,the distribution of Permo-Triassic(P-T) granitoids occupied across the whole basement of the eastern Qaidam Basin from the southern margin of the Qilian Mountains to the East Kunlun Mountains.An integrated analysis of the age distribution of P-T granitoids in the Qaidam Basin and its surrounding mountains shows that the earliest P-T magmatism(293.6-270 Ma) occurred in the northwestern part of the basin and expanded eastwards and southwards,resulting in the P-T intrusive magmatism that ran through the whole basin basement.As the Cenozoic basement thrust system developed in the eastern Qaidam Basin,the nearly N-S-trending shortening and deformation in the basement of the basin tended to intensify from west to east,which went contrary to the distribution trend of N-S-trending shortening and deformation in the Cenozoic cover of the basin,reflecting that there was a transformation of shortening and thickening of Cenozoic crust between the eastern and western parts of the Qaidam Basin,i.e.,the crustal shortening of eastern Qaidam was dominated by the basement deformation(triggered at the middle and lower crust),whereas that of western Qaidam was mainly by folding and thrusting of the sedimentary cover(the upper crust). | CHEN Xuanhua George GEHRELS YIN An LI Li JIANG Rongbao | 2012 | Acta Geologica Sinica(English Edition)2012，86，2： | 32 |
| 4 | 中生代燕山褶皱冲断带的构造演化——以河北省和辽宁省为重点的研究显示文摘从渤海湾和辽宁省开始 ,燕山山脉沿北纬 40°左右一直向西延伸到河北和内蒙古的边界。继续向西 ,以太古宙为基底的燕山山脉被上第三系所覆盖 ;因此 ,虽然内蒙古的阴山很可能就是燕山向西的延伸 ,但还缺乏有力的证据。中生代燕山褶皱冲断带以陆源沉积、岩浆作用和构造变形 (包括多期的褶皱作用 ,挤压、伸展及走滑断层作用 )为特征。对北京、冀北与辽西地区侵入岩及火山岩的野外工作及测年 (U Pb,40 Ar 39Ar方法 )研究揭示出该区中生代复杂的构造变形特征 ;而这种构造变形特征被归因于 :(1)中生代以前 (二叠纪到中生代早期 )复杂的早期变形序列 ,以及 (2 )中生代时期交替发生的主要构造形迹向南和向北的构造汇聚作用。燕山在中侏罗世之前 (早于 180 Ma)向南运动的低角度的逆冲断层发育在一条二叠纪三叠纪岩浆弧的南部 ,太古宙基底及元古宙和显生宙盖层均卷入其中。该次推覆作用可能是 (1)古生代时期蒙古弧与安第斯型的大陆弧沿华北板块的北部边缘发生碰撞的后果 ,或 (2 ) (北部陆块 )向南俯冲于华北太古宙“克拉通”之下时形成的 ,类似于美国科迪勒拉型的弧后、前陆褶皱冲断带。此次褶皱冲断发生之后 ,该推覆断层的上盘经历了广泛的剥蚀 ,随后中侏罗世火山沉积地层同时沉积在上、下盘之上。 | Gregory A.Davis 郑亚东 王琮 Brian J.Darby 张长厚 George Gehrels 汪洋 李凯明 | 2002 | 北京地质2002，14，4： | 31 |
| 5 | Initiation of the Himalayan orogen as an early Paleozoic thin-skinned thrust belt 显示文摘 | Gehrels G E Decelles P G Martin A | 2003 | GSA Today2003，，9： | 1 |
| 6 | Constraints on early Earth differentiation from hafnium and neodymium isotopes显示文摘 | Vervoot J D Pachelt P J Gehrels G E | 1996 | Nature1996，379，： | 1 |
| 7 | Detrital zircon geochronology of pre-Tertiary strata in the Tibetan-Himalayan orogen显示文摘 | GEHRELS G KAPP P DECELLES P | 2011 | Tectonics2011，30，： | 1 |
| 8 | Constraints on early differentiation from hafMum and neodymium isotopes 显示文摘 | Vervoort J D Pachelt P J Gehrels G E | 1996 | Nature1996，379，： | 1 |
| 9 | U-Pb zircon ages as a sediment mixing tracer in the Nepal Himalaya显示文摘 | AMIDON W BURBANK D GEHRELS G | 2005 | Earth and Planetary Science Letters2005，235，12： | 1 |
| 10 | Detrital geochronology and geochemistry of Cretaceous-Early Miocene strata of Nepal:implications for timing and diachroneity of initial Himalayan orogenesis显示文摘 | DECELLES P G GEHRELS G E NAJMAN Y | 2004 | Earth and Planetary Science Letters2004，227，34： | 1 |
| 11 | Modern distribution of saltmarsh testate amoebae:regional variability of zouation and response to environmental variables显示文摘 | Charman D J Roe H M Gehrels W R | 2002 | Journal of Quaternary Science2002，17，： | 1 |
| 12 | A giant γ-ray flare from the magnetar SGR 1806-20显示文摘 | PALMER D M BARTHELMY S GEHRELS N | 2005 | Nature2005，434，： | 1 |
| 13 | Geological Recordsof the Lhasa-Qiangtang and Indo-Asian Collisions in the Ni-ma Area of Central Tibet显示文摘 | Kapp P Decelles P G Gehrels G E | 2007 | Geological Society of AmericaBulletin2007，119，78： | 1 |
| 14 | Constraints on early Earth different ation from hafnium and neodymium isotopes显示文摘 | Vervoort J D Pachelt P J Gehrels G E | 1996 | Nature1996，379，19： | 1 |
| 15 | Laurentian Sources for Detrital Zircon Grains in Turbidite and Deltaic Sandstones of the Pennsylvanian Haymond Formation, Marathon Assemblage, West Texas, USA 显示文摘 | GLEASON J D GEHRELS G E DICKINSON W R | 2007 | Journal of Sedimentary Research2007，77，11： | 1 |
| 16 | Magmatie history of the north- eastern Tibetan Plateau显示文摘 | Gehrels G E Yin A and Wang X F | 2003 | Journal of Geophysical Research2003，108，9： | 1 |
| 17 | Evidence for century-timescale acceleration in mean sea levels and for recent changes in extreme sea levels显示文摘 | WOODWORTH P L MENENDEZ M GEHRELS W R | 2011 | Surveys in Geophysics2011，32，45： | 1 |
| 18 | Metamorphic rocks in central Tibet: Lateral variations and implications for crustal structure显示文摘 | Pullen A Kapp P Gehrels G E | 2011 | Geological Society of America Bulletin2011，123，34： | 1 |
| 19 | Tectonic implications of U-Pb zircon ages of the Himalayan Orogenic Belt in Nepal显示文摘 | DeCelles P G Gehrels G E Quade J | 2000 | Science2000，288，5456： | 1 |
| 20 | Triassic continental subduc- tion in central Tibet and Mediterranean-style closure of the Paleo- Tethys Ocean显示文摘 | Pullen A Kapp P Gehrels G E | 2008 | Geology2008，36，5： | 1 |
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