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| 1 | Time range of Mesozoic tectonic regime inversion in eastern North China Block显示文摘An important tectonic inversion took place in eastern North China Block(NCB) during Mesozoic, which caused a great lithosphere thinning, reconstruction of basin-range series, powerful interaction between mantle and crust, a vast granitic intrusion and volcanism, and large-scale metallogenic explosion. The time range of the Mesozoic tectonic regime inversion in the eastern North China Block is one of the key issues to understand mechanism of tectonic regime inversion. Our updated results for recognizing the time range are mainly obtained from the following aspects: structural analyses along northern and southern margins of the NCB and within the NCB for revealing tectonic inversion from compression to extension and structural striking from ~EW to NNE; geothermic analyses of the eastern sedimental basins for a great change of thermal history and regime; basin analysis for basin inversion from compression to extension and basin migration from ~EW to NNE; petrological and geochemical studies of volcanic rocks and lowermost crust xenoliths for recognizing peak period of mantle upwelling and intense interaction between mantle and crust, and main metallogenic epoch. All the studies of the above give the same time range from~150-140 Ma to ~110-100Ma, peaking at ~120 Ma. | ZHAI Mingguo ZHU Rixiang LIU Jianming MENG Qingren HOU Quanlin HU Shengbiao LIU Wei LI Zhong ZHANG Hongfu ZHANG Huafeng | 2004 | Science China Earth Sciences2004，47，2： | 89 |
| 2 | Zircon SHRIMP U-Pb dating of meta-diorite from the basement of the Songliao Basin and its geological significance显示文摘The basement of the Songliao Basin mainly contains low-grade metamorphic rocks and granites. It has been long disputed whether the basin has Precambrian metamorphic basement. This is a report of zircon SHRIMP U-Pb dating results of a meta-diorite sample, which was taken from the Si-5 drilling hole in the southern portion of the Songliao Basin. The SHRIMP analyses indicate that the meta-diorite with a weighted mean 207Pb/206Pb age of 1839±7 Ma (2σ, n = 8) was emplaced during Paleo-Proterozoic time. Additionally, the meta-diorite has old Nd model ages (TDM1: 2999Ma; TDM2: 2849Ma). These data suggest that the south- ern part of the Songliao Basin do possess Precambrian base- ment. | WANG Ying ZHANG Fuqin ZHANG Dawei MIAO Laicheng LI Tiesheng XIE Hangqiang MENG Qingren LIU Dunyi | 2006 | Chinese Science Bulletin2006，51，15： | 35 |
| 3 | Decratonic gold deposits显示文摘The North China Craton(NCC) hosts numerous gold deposits and is known as the most gold-productive region of China. The gold deposits were mostly formed within a few million years in the Early Cretaceous(130–120 Ma), coeval with widespread occurrences of bimodal magmatism, rift basins and metamorphic core complexes that marked the peak of lithospheric thinning and destruction of the NCC. Stable isotope data and geological evidence indicate that ore-forming fluids and other components were largely exsolved from cooling magma and/or derived from mantle degassing during the period of lithospheric extension. Gold mineralization in the NCC contrasts strikingly with that of other cratons where gold ore-forming fluids were sourced mostly from metamorphic devolatization in compressional or transpressional regimes. In this paper, we present a summary and discussion on time-space distribution and ore genesis of gold deposits in the NCC in the context of the timing, spatial variation, and decratonic processes. Compared with orogenic gold deposits in other cratonic blocks, the Early Cretaceous gold deposits in the NCC are quite distinct in that they were deposited from magma-derived fluids under extensional settings and associated closely with destruction of cratonic lithosphere. We argue that Early Cretaceous gold deposits in the NCC cannot be classified as orogenic gold deposits as previously suggested, rather, they are a new type of gold deposits, termed as 'decratonic gold deposits' in this study. The westward subduction of the paleo-West Pacific plate(the Izanagi plate) beneath the eastern China continent gave rise to an optimal tectonic setting for large-scale gold mineralization in the Early Cretaceous. Dehydration of the subducted and stagnant slab in the mantle transition zone led to continuous hydration and considerable metasomatism of the mantle wedge beneath the NCC. As a consequence, the refractory mantle became oxidized and highly enriched in large ion lithophile elements and chalcophile elements(e.g., Cu, Au, Ag and Te). Partial melting of such a mantle would have produced voluminous hydrous, Au- and S-bearing basaltic magma, which, together with crust-derived melts induced by underplating of basaltic magma, served as an important source for ore-forming fluids. It is suggested that the Eocene Carlin-type gold deposits in Nevada, occurring geologically in the deformed western margin of the North America Craton, are comparable with the Early Cretaceous gold deposits of the NCC because they share similar tectonic settings and auriferous fluids. The NCC gold deposits are characterized by gold-bearing quartz veins in the Archean amphibolite facies rocks, whereas the Nevada gold deposits are featured by fine-grained sulfide dissemination in Paleozoic marine sedimentary rocks. Their main differences in gold mineralization are the different host rocks, ore-controlling structures, and ore-forming depth. The similar tectonic setting and ore-forming fluid source, however, indicate that the Carlin-type gold deposits in Nevada are actually analogous to decratonic gold deposits in the NCC. Gold deposits in both the NCC and Nevada were formed in a relatively short time interval(<10 Myr) and become progressively younger toward the subduction zone. Younging of gold mineralization toward subduction zone might have been attributed to retreat of subduction zone and rollback of subducted slab. According to the ages of gold deposits on inland and marginal zones, the retreat rates of the Izanagi plate in the western Pacific in the Early Cretaceous and the Farallon plate of the eastern Pacific in the Eocene are estimated at 8.8 cm/yr and 3.3 cm/yr, respectively. | ZHU RiXiang FAN HongRui LI JianWei MENG QingRen LI ShengRong ZENG QingDong | 2015 | Science China Earth Sciences2015，58，9： | 37 |
| 4 | Triassic deep-marine sedimentation in the western Qinling and Songpan terrane显示文摘Triassic sequences in both the western Qinling and Songpan terrane are composed mostly of deep-marine sediments. A detailed study was carried out on main sedimentary facies of Triassic successions, showing that they resulted from diverse sedimentary processes, such as submarine debris-flows, turbidity currents, bottom-flows, suspension fallout, and fluidized sediment flows. Debris-flows are dividable into two types, gravelly and sandy debris-flows, respectively, and the sandy debris-flow deposits make up considerable portion of the Triassic successions concerned. Turbidite is characterized by occurrence of normal grading, and the whole Bouma sequences, though widely developed, are not totally attributed to true turbidity currents. The non-graded Ta division is thought to originate from sandy debris flows, whereas the rest divisions result from low-density currents or from bottom-current modification if they contain sedimentary structures related to traction currents. Four types of facies associations are distinguished within Triassic deep-marine successions: massive and thick-bedded coarse-grained facies association, medium- and thick-bedded sandstone with interlayered fine-grained facies association, interlayered thin-bedded fine-grained facies association, and syn-sedimentary slump/breccia facies association. Spatial distribution of the different facies associations suggests that Lower Triassic sedimentation occurred primarily in continental slope, submarine channels, and base-of-slope aprons in the Hezuo-Jianzha region of the western Qinling, whereas the Middle Triassic consists mainly of sedimentary facies of base-of-slope aprons and submarine incised valleys. The counterparts in the Dangchang-Diebu region, in contrast, are characterized by platform carbonates. The shallow-marine carbonates evolved into deep-marine facies since the Ladinian, indicative of rapid drowning of the Carnian carbonate platform in Middle Triassic times. Depositional history of Lower Triassic and lower portion of Middle Triassic successions in the northern Songpan terrane is similar to that of the Dangchang-Diebu region of the western Qinling, as manifested by development of Lower-early Middle Triassic shallow-marine carbonate and a rapid shift to base-of-slope apron sediments since the Ladinian. | MENG QingRen QU HongJie HU JianMin | 2007 | Science China Earth Sciences2007，50，z2： | 7 |
| 5 | Vermiform trace fossils from the Precambrian Ruyang Group, western Henan显示文摘THE origin and evolution of Precambrian lives has been a long-standing controversial problem. It is now generally accepted by most paleontologists that the origin of metazoa can be traced back to more than 1000 Ma, because the Ediacara and latest pre-Ediacara fauna, such as the Huainan fauna, are featured by their diversification of forms, complicated structures | HU Jianmin, MENG Qingren and LI Wenhou1 Xi’ an College of Geology, Xi’an 710054, China 2. Institute of Geophysics, Chinese Academy of Sciences, Beijing 100101, China 3 Department of Geology, Northwest University, Xi’an 710069, China | 1997 | Chinese Science Bulletin1997，42，3： | 3 |
| 6 | Grafting of thermoresponsive polymer from the surfaceof functionalized multiwalled carbon nanotubes via atom transfer radical polymerization显示文摘Multiwalled carbon nanotubes were oxidized with concentrated HNO3 and H2SO4 to introduce carbox-ylic groups onto carbon nanotubes surfaces. The oxidized carbon nanotubes were reacted subse-quently with thionyl chloride and 2-Hydroxylethyl-2′-bromoisobutyrate, producing MWNT-based macroinitiators, MWNT-Br, for the atom transfer radical polymerization of (N-isopropylacrylamide). FTIR, XPS, 1H NMR, Raman and TGA were used to characterize the resulting products and to determine the content of the water-soluble poly (N-isopropylacrylamide) chains in the product. The MWNTs grafted with PNIPAM chains have good solubility in distilled water; THF and CHCl3. TEM images of the samples provide direct evidence for the formation of a nanostructure that MWNTs coated with polymer layer. The produced MWNT-g-PNIPAM has a PNIPAM shell, which is very sensitive to the change of temperature. This method would open a door for the fabrication of novel functional carbon nanotube-based nano-materials or nanodevices with designable structure and tailor-made properties. | XU GuoYong XIA Ru WANG Hu MENG XiangChun ZHU QingRen | 2008 | Chinese Science Bulletin2008，53，15： | 2 |
| 7 | What drove late Mesozoic extension of the northern China-Mongolia tract?显示文摘 | Meng Qingren | 2003 | Tectonophysics2003，369，： | 1 |
| 8 | Radiometric dating sediments derived from metamorphic rocks of the Dabie orogenic belt in the Jurassic and Early Cretaceous 显示文摘 | Li Shuangying Li Renwei Meng Qingren | 2006 | Progress in Natural Science2006，16，： | 1 |
| 9 | Mesozoic evolution of the Hefei Basin in eastern China: sedimentary response to deformations in the adjacent Dabieshan and along the Tanlu fault 显示文摘 | Meng Qingren Li Shuangying Li Renwei | 2007 | Geological Society of America Bulletin2007，119，78： | 1 |
| 10 | Mesozoic large-scale lateral extrusion,and uplift of the TongbaiDabie Shan belt in east China显示文摘 | Erchie Wang Qingren Meng B Clark Burchfiel | 2003 | Geology2003，31，： | 1 |
| 11 | Late cenozoic denudation by large -magnitude landslides in the eastern edge of Tibetan Plateau显示文摘 | Meng Qingren Hu Jianmin Erchie Wang Qu Hongjie | 2006 | EPSL2006，，243： | 1 |
| 12 | Timing and magnitude of displacement on the Altyn Tagh fault constraints from stratigraphic correlation of adjoining Tarim and Qaidam basins,NW China显示文摘 | Meng Qingren Hu Jianmin Yang Fuzhong | 2001 | Terra Nova2001，13，： | 1 |
| 13 | Timing of collision of the North and South China blocks:controversy and reconciliation显示文摘 | Meng Qingren Zhang Guowei | 1999 | Geology1999，27，2： | 1 |
| 14 | Mesozoic sedimentary evo- lution of the northwest Sichuan basin:implication for continued clockwise rotation of the South China block显示文摘 | Meng Qingren Wang E Hu Jianmin | 2005 | Geological Socie- ty of America Bulietin2005，117，3： | 1 |
| 15 | Mesozoic sedimentary evo- lution of the northwest Sichuan basin : implication for continued clock-wise rotation of the South China block 显示文摘 | Meng Qingren Wang Erchie Hu Jianmin | 2005 | Geological Society of A- merica Bulletion2005，17，3： | 1 |
| 16 | Timing of collision of the North and South China blocks: Controversy and reconciliation 显示文摘 | Meng Qingren Zhang Guowei | 1999 | Geology1999，27，2： | 1 |
| 17 | The Qinling orogeny and intracontinental orogen mechanisms 显示文摘 | Guowei Zhang Liwen Xiang Qingren Meng | 1995 | Episodes1995，18，12： | 1 |
| 18 | Late cenozoic denudation by large-magnitude landslides in the eastern edge of Tibetan Plateau 显示文摘 | Meng Qingren Hu Jianmin Wang Erchie | 2006 | EPSL2006，245，： | 1 |
| 19 | Mesozoic sedimentm)' evolution of the northwest Sichuan basin,implication tbr continued ck:kwise rotation of the' South China block 显示文摘 | Meng Qingren Wang Erqi | 2005 | GSA Bulletion2005，17，3： | 1 |
| 20 | What drove late Mesozoic extension of the northern China-Mongolia tract 显示文摘 | Meng Qingren | 2003 | Tectonophyscics2003，369，： | 1 |
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