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Spatial-temporal distribution and geochemistry of highly evolved Mesozoic granites in Great Xing’an Range,NE China:Discriminant criteria and geological significance
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作者 WU Haoran YANG Hao +4 位作者 GE Wenchun JI Zheng DONG Yu JING Yan JING Jiahao 《Global Geology》 2024年第1期20-34,共15页
Highly evolved granite is an important sign of the mature continent crust and closely associated with deposits of rare metals.In this work,the authors undertake systematically zircon U-Pb ages and whole rock elemental... Highly evolved granite is an important sign of the mature continent crust and closely associated with deposits of rare metals.In this work,the authors undertake systematically zircon U-Pb ages and whole rock elemental data for highly evolved granitic intrusions from the Great Xing’an Range(GXR),NE China,to elucidate their discriminant criteria,spatial-temporal distribution,differentiation and geodynamic mecha-nism.Geochemical data of these highly evolved granites suggest that high w(SiO_(2))(>70%)and differentiation index(DI>88)could be quantified indicators,while strong Eu depletion,high TE_(1,3),lowΣREE and low Zr/Hf,Nb/Ta,K/Rb could only be qualitative indicators.Zircon U-Pb ages suggest that the highly evolved gran-ites in the GXR were mainly formed in Late Mesozoic,which can be divided into two major stages:Late Ju-rassic-early Early Cretaceous(162-136 Ma,peak at 138 Ma),and late Early Cretaceous(136-106 Ma,peak at 126 Ma).The highly evolved granites are mainly distributed in the central-southern GXR,and display a weakly trend of getting younger from northwest to southeast,meanwhile indicating the metallogenic potential of rare metals within the central GXR.The spatial-temporal distribution,combined with regional geological data,indicates the highly evolved Mesozoic granites in the GXR were emplaced in an extensional environ-ment,of which the Late Jurassic-early Early Cretaceous extension was related to the closure of the Mongol-Okhotsk Ocean and roll-back of the Paleo-Pacific Plate,while the late Early Cretaceous extension was mainly related to the roll-back of the Paleo-Pacific Plate. 展开更多
关键词 highly evolved granite Great xing’an Range spatial-temporal distribution extensional environment
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基于Fredlund&Xing模型的渗流分析在川东红层梯田滑坡中的应用 被引量:1
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作者 廖勇 乐建 +2 位作者 胡力 顾伟伟 徐今星 《水文地质工程地质》 CAS CSCD 北大核心 2023年第3期104-114,共11页
四川省巴中市通江县新场镇七家沟村二社水头上滑坡为川东典型红层梯田滑坡,区内类似斜坡覆盖范围广泛,但针对该地区此类滑坡的渗流分析研究较少。在对滑坡区进行大量野外调查、勘查、资料收集的基础上,综合运用卫星遥感、无人机航拍、机... 四川省巴中市通江县新场镇七家沟村二社水头上滑坡为川东典型红层梯田滑坡,区内类似斜坡覆盖范围广泛,但针对该地区此类滑坡的渗流分析研究较少。在对滑坡区进行大量野外调查、勘查、资料收集的基础上,综合运用卫星遥感、无人机航拍、机载LiDAR、室内试验等技术手段,基于Fredlund&Xing土水特征曲线数学模型,采用Geo-Studio中SEEP/W模块进行渗流分析,将不同时间阶段分析结果与SLOPE/W模块耦合,继而得到稳定系数与降雨、时间之间的动态变化关系,揭示了滑坡的变形过程和形成机理。研究显示:(1)连续降雨促使坡体地下水位升高,稳定性降低,最终导致水头上滑坡整体失稳破坏;(2)滑坡变形过程、地下水出露特征与Geo-Studio计算结果基本吻合,说明基于Fredlund&Xing数值模拟在类似地区能提供较为准确的模拟结果;(3)开垦梯田(水田)会降低坡体稳定性。研究结果可为四川山区类似滑坡灾害进行隐患排查和主动防范提供理论支撑,为防灾减灾提供参考依据。 展开更多
关键词 Fredlund&xing 渗流 数值模拟 耦合 川东红层 梯田 滑坡
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Zircon U-Pb geochronology,geochemistry and tectonic implication of volcanic rocks from Manketouebo Formation in Keyihe area of northern Great Xing'an Range
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作者 JIA Jinfeng WANG Yang LI Pengchuan 《Global Geology》 2023年第3期133-145,共13页
Zircon U-Pb isotope dating and whole-rock geochemical analyses were undertaken for the rhyolite,rhyolitic lithic crystal tuff and dacitic tuff from the Manketouebo Formation in the Keyihe area,in order to constrain th... Zircon U-Pb isotope dating and whole-rock geochemical analyses were undertaken for the rhyolite,rhyolitic lithic crystal tuff and dacitic tuff from the Manketouebo Formation in the Keyihe area,in order to constrain their genesis and tectonic significance.Zircon LA-ICP-MS U-Pb data indicate that the rhyolite and rhyolitic lithic crystal tuff were formed during 137±5 Ma and 143±1 Ma,respectively.These volcanic rocks have high SiO2(70.03%–76.46%)and K2O+Na2O(8.10%–9.52%)contents,but low CaO(0.03%–0.95%)and MgO(0.07%–0.67%)contents,which belong to the peraluminous and high-K calc-alkaline rocks.They are enriched in light rare earth elements(REEs),and exhibit fractionation of light over heavy REEs,withδEu values of 0.37–0.83.The volcanic rocks are enriched in LILEs(e.g.,Rb,U and K)and depleted in HFSEs(e.g.,Nb,Ti,P and Ta).The chemical composition suggests that these volcanic rocks formed by partial melting of crust material.Combined with previous regional research results,the authors consider that the volcanic rocks of the Manketouebo Formation in the Keyihe area were formed under an extensional environment related to the closure of the Mongolia–Okhotsk Ocean. 展开更多
关键词 Manketouebo Formation zircon U-Pb geochronology GEOCHEMISTRY Great xing’an Range
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垦利碱蓬Suaeda kenliensis J.W.Xing sp.nov.--碱蓬属一新种 被引量:2
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作者 邢军武 《海洋科学》 CAS CSCD 北大核心 2018年第9期51-54,共4页
报道了中国碱蓬属植物一新种——垦利碱蓬Suaeda kenliensis J.W.Xing sp.nov.。该种与南方碱蓬Suaeda australis(R.Br.)Moq.相近,但系一年生,种子具圆盘状和卵形两种形状,直径约2~3mm,叶长可达5~7 cm,无不定根,与南方碱蓬相区别。垦... 报道了中国碱蓬属植物一新种——垦利碱蓬Suaeda kenliensis J.W.Xing sp.nov.。该种与南方碱蓬Suaeda australis(R.Br.)Moq.相近,但系一年生,种子具圆盘状和卵形两种形状,直径约2~3mm,叶长可达5~7 cm,无不定根,与南方碱蓬相区别。垦利碱蓬生长于潮间带和海水周期性淹没处。耐高盐,区域内海水盐度为25,滩涂表层含盐量在退潮后经日晒蒸发可达60‰以上。常形成单一种群的红海滩植被景观。模式标本存:中国科学院海洋生物标本馆;编号:MBM286537。采集地:莱州湾垦利海域潮间带泥滩。采集人:邢军武、曲宁、钟芳。 展开更多
关键词 碱蓬属Suaeda 垦利碱蓬Suaeda kenliensis J.W.xing sp.nov. 新种
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Recognition of Early Paleozoic Magmatisms in the Supposed Proterozoic Basements of Zhalantun, Great Xing’an Range, NE China 被引量:3
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作者 QIN Tao GUO Rongrong +5 位作者 ZANG Yanqing QIAN Cheng WANG Yan SI Qiuliang SUN Wei MA Yongfei 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2019年第5期1434-1455,共22页
The Zhalantun terrane from the Xing’an massif, northeast China, was used to be considered as Proterozoic basements. However, amounts of detrital zircon ages from the meta-sedimentary rocks deny the existence of Preca... The Zhalantun terrane from the Xing’an massif, northeast China, was used to be considered as Proterozoic basements. However, amounts of detrital zircon ages from the meta-sedimentary rocks deny the existence of Precambrian basements recently. Notably, magmatic rocks were barely reported to limit the exact ages of the Zhalantun basements. In this study, we collected rhyolite, gabbro and quartz diorite for zircon in-situ U-Pb isotopic dating, which yield crystallization ages of ~505 Ma, ~447 Ma and ~125 Ma, respectively. Muscovite schist and siltstone define maximum depositional ages of ~499 Ma and ~489 Ma, respectively. Additionally, these dated supracrustal rocks and plutons also yield ancient detrital/xenocryst zircon ages of ~600-1000 Ma, ~1600-2220 Ma, ~2400 Ma, ~2600-2860 Ma. Based on the whole-rock major and trace element compositions, the ~505 Ma rhyolites display high SiO2 and alkaline contents, low Fe2O3T, TiO2 and Al2O3, and relatively high Mg O and Mg#, which exhibit calc-alkaline characteristics. These rhyolites yield fractionated REE patterns and negative Nb, Ta, Ti, Sr, P and Eu anomalies and positive Zr anomalies. The geochemistry, petrology and Lu-Hf isotopes imply that rhyolites were derived from the partial melting of continental basalt induced by upwelling of sub-arc mantle magmas, and then experienced fractional crystallization of plagioclase, which points to a continental arc regime. The ~447 Ma gabbros exhibit low Si O2 and alkaline contents, high Fe2 O3 T, Ti O2, Mg O and Mg#. They show minor depletions of La and Ce, flat MREE and HREE patterns, and negative Nb, Ta, Zr and Hf anomalies. Both sub-arc mantle and N-MORB-like mantle were involved in the formation of the gabbros, indicative of a probable back-arc basin tectonic setting. Given that, the previously believed Proterozoic supracrustal rocks and several plutons from the Zhalantun Precambrian basements were proved to be Paleozoic to Mesozoic rocks, among which these Paleozoic magmatic rocks were generally related to subduction regime. So far, none Proterozoic rocks have been identified from the Zhalantun Precambrian basement, though some ~600-3210 Ma ancient detrital/xenocryst zircons were reported. Combined with ancient zircon ages and newly reported ~2.5 Ga and ~1.8 Ga granites from the south of the Zhalantun, therefore, the Precambrian rocks probably once exposed in the Zhalantun while they were re-worked and consumed during later long tectonic evolutionary history, resulting in absence of Precambrian rocks in the Zhalantun. 展开更多
关键词 early Paleozoic magmatism xinghuadukou Group Jiageda Formation Zhalantun TERRANE GREAT xing’an RANGE Central Asian OROGENIC Belt
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基于Fredlund&Xing参数下不同雨型边坡渗透稳定性分析 被引量:32
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作者 郁舒阳 张继勋 +3 位作者 王军磊 王天兴 朱文炜 胡南雄 《三峡大学学报(自然科学版)》 CAS 2017年第6期46-51,共6页
为研究Fredlund&Xing模型不同非饱和土参数a、m、n在不同雨型下对边坡渗流特性以及稳定性影响,利用Geo-slope软件中的Seep/W和Slope/W模块进行流固耦合计算,分析了总降雨量为0.1m下不同参数在平均型,前锋型,中锋型以及后锋型降雨下... 为研究Fredlund&Xing模型不同非饱和土参数a、m、n在不同雨型下对边坡渗流特性以及稳定性影响,利用Geo-slope软件中的Seep/W和Slope/W模块进行流固耦合计算,分析了总降雨量为0.1m下不同参数在平均型,前锋型,中锋型以及后锋型降雨下对坡顶和坡脚监测点的孔压以及边坡稳定性的变化规律,得出了安全系数的变化曲线,计算结果表明:不同参数下,坡顶处孔压先增大,后逐渐降低,坡脚处孔压先增大,后保持不变;安全系数总体上呈现持续下降的趋势;参数a与进气值相关,a值越小孔压变化越剧烈;参数m与剩余含水量有关,但不同m值之间孔压相差不大;参数n与土-水特征曲线的斜率有关,n越大,孔压变化速率越大,安全系数降幅越大;不同降雨雨型影响了坡顶和坡脚孔压达到最大值的时刻,对安全系数影响较小.研究成果为不同非饱和参数土体在不同降雨雨型下边坡稳定性分析和治理提供了参考. 展开更多
关键词 Fredlund&xing参数 降雨入渗 降雨雨型 非饱和渗流 边坡稳定
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Research on the Historical Evolution and Spatial Composition of Fukouxing Cultural Route
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作者 WANG Xiaodong CHEN Weiyu SHEN Shuangxi 《Journal of Landscape Research》 2021年第6期33-36,共4页
The Eight Taihang Xing routes are eight natural passages formed by the Taihang Mountains,which bore the functions of transportation and military gateways for the three provinces of Shanxi,Hebei and Henan in ancient ti... The Eight Taihang Xing routes are eight natural passages formed by the Taihang Mountains,which bore the functions of transportation and military gateways for the three provinces of Shanxi,Hebei and Henan in ancient times.Fukouxing is one of the Eight Taihang Xing routes.It is the main road connecting the Shangdang Basin and southern Hebei.It has an important influence on the history and culture of southeastern Shanxi and southern Hebei,forming a unique cultural route.In this study,the historical evolution of Fukouxing is analyzed firstly,and then the spatial distribution of the ancient road is explored,hoping to provide an important basis for the protection of cultural heritage along the Fukouxing route. 展开更多
关键词 Fukouxing Eight Taihang xing routes Cultural routes Spatial composition
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Image Mathematics—Mathematical Intervening Principle Based on “Yin Yang Wu Xing” Theory in Traditional Chinese Mathematics (I) 被引量:28
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作者 Yingshan Zhang Weilan Shao 《Applied Mathematics》 2012年第6期617-636,共20页
By using mathematical reasoning, this paper demonstrates the mathematical intervening principle: “Virtual disease is to fill his mother but real disease is to rush down his son” (虚则补其母, 实则泄其子) and “Strong... By using mathematical reasoning, this paper demonstrates the mathematical intervening principle: “Virtual disease is to fill his mother but real disease is to rush down his son” (虚则补其母, 实则泄其子) and “Strong inhibition of the same time, support the weak” (抑强扶弱) based on “Yin Yang Wu Xing” Theory in image mathematics of Traditional Chinese Mathematics (TCMath). We defined generalized relations and generalized reasoning, introduced the concept of steady multilateral systems with two non-compatibility relations, and discussed its energy properties. Later based on the intervention principle in image mathematics of TCMath and treated the research object of the image mathematics as a steady multilateral system, it has been proved that the mathematical intervening principle is true. The kernel of this paper is the existence and reasoning of the non-compatibility relations in steady multilateral systems, and it accords with the oriental thinking model. 展开更多
关键词 Image MATHEMATICS “Yin Yang WU xing Theory Steady Multilateral Systems Opposite Non-Compatibility Relations INTERVENTION RULE Self-Protection RULE MATHEMATICAL Side Effects Mathe-matical INTERVENTION Resistance Problem
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Geochemical Characteristics and Geological Significance of Early Permian Baya'ertuhushuo Gabbro in South Great Xing'an Range 被引量:13
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作者 LIU Jianfeng CHI Xiaoguo +4 位作者 ZHAO Zhi ZHANG Xingzhou MA Zhihong WANG Tiefu HU Zhaochu 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2011年第1期116-129,共14页
Field geological investigation and geochemical analysis are carried out on Baya'ertuhushuo Gabbro in South Great Xing'an Range. Field investigation reveals that the gabbro is a magmatic intrusion rather than a compo... Field geological investigation and geochemical analysis are carried out on Baya'ertuhushuo Gabbro in South Great Xing'an Range. Field investigation reveals that the gabbro is a magmatic intrusion rather than a component of an ophiolite suite as previously thought. Zircon laser ablation inductively coupled plasma mass spectroscopy (LA-ICP-MS) U-Pb dating indicates the gabbro was formed in 274-275 Ma, just as the widespread volcanic rocks of Dashizhai Formation (P1d), monzogranites and miarolitic alkali-feldspar granites in the study area. The gabbro has SiO2 content between 47.23 wt% and 50.17 wt%, high MgO and FeOT contents of 6.95-11.29 wt% and 7.32- 12.24wt%, respectively, and it belongs to low-K tholeiitic series in the SiO2-K2O diagram. The Chondrite-normalized rare earth element (REE) patterns and primitive mantle-normalized spider diagrams of the gabbro are similar to those of Normal Mid-Ocean Ridge Basalt (N-MORB) except for the enrichment of large ion lithophfle elements (LILE), such as Rb, Ba and K. In trace element tectonic discriminative diagrams, the samples are mainly plotted in the N-MORB field, and Zircon in situ Lu-Hf isotopic analysis also indicates the gabbro originated from depleted mantle. Through synthetic studies of the geochemical characteristics and petrogenesis of Baya'ertuhushuo gabbro, volcanic rocks of Dashizhai Formation and granitoids in the area, it is suggested that the early Permian magmatism in the Xilinhot-Xiwuqi area formed in the tectonic setting of asthenosphere upwelling, which was caused by breaking-off of the subducted Paleo-Asian Ocean slab. 展开更多
关键词 GABBRO geochemistry early Permian zircon U-Pb age south Great xing'an Range
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Early Cretaceous Adakitic Rocks in the Northern Great Xing’an Range, NE China: Implications for the Final Closure of Mongol-Okhotsk Ocean and Regional Extensional Setting 被引量:5
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作者 ZHANG Lingyu LI Shichao +1 位作者 CHU Xiaolei SHANG Yinmin 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2019年第5期1544-1558,共15页
A large amount of igneous rocks in NE China formed in an extensional setting during Late Mesozoic. However, there is still controversy about how the Mongol-Okhotsk Ocean and the Paleo-Pacific Ocean effected the lithos... A large amount of igneous rocks in NE China formed in an extensional setting during Late Mesozoic. However, there is still controversy about how the Mongol-Okhotsk Ocean and the Paleo-Pacific Ocean effected the lithosphere in NE China. In this paper, we carried out a comprehensive study for andesites from the Keyihe area using LA-ICP-MS zircon UPb dating and geochemical and Hf isotopic analysis to investigate the petrogenesis and tectonic setting of these andesites. The U-Pb dating yields an Early Cretaceous crystallization age of 128.3±0.4 Ma. Geochemically, the andesites contain high Sr(686-930 ppm) and HREE contents, low Y(11.9-19.8 ppm) and Yb(1.08-1.52 ppm) contents, and they therefore have high Sr/Y(42-63) and La/Yb(24-36) ratios, showing the characteristics of adakitic rocks. Moreover, they exhibit high K2O/Na2O ratios(0.57-0.81), low Mg O contents(0.77-3.06 wt%), low Mg# value(17-49) and negative εHf(t) values(-1.7 to-8.5) with no negative Eu anomalies, indicating that they are not related to the oceanic plate subduction. Based on the geochemical and isotopic data provided in this paper and regional geological data, it can be concluded that the Keyihe adakitic rocks were affected by the Mongol-Okhotsk tectonic regime, forming in a transition setting from crustal thickening to regional extension thinning. They were derived from the partial melting of the thickened lower crust. The closure of the Mongol-Okhotsk Ocean may finish in early Early Cretaceous, followed by the collisional orogenic process. The southern part region of its suture belt was in a post-orogenic extensional setting in the late Early Cretaceous. 展开更多
关键词 Mongol-Okhotsk OCEAN northern GREAT xing’an RANGE Early Cretaceous adakitic rocks lower crust
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Origin of C type adakite magmas in the NE Xing'an block, NE China and tectonic implication 被引量:6
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作者 Changzhou Deng Guangyi Sun +3 位作者 Deyou Sun Hu Huang Jianfeng Zhang Jun Gou 《Acta Geochimica》 EI CAS CSCD 2018年第2期281-294,共14页
In this paper, we report new whole-rock geochemical and zircon U-Pb data for monzogranites in the NE Xing'an block. These data constrained the petrogenesis of C type (high Sr/Y) adakitic rocks and showed the spatia... In this paper, we report new whole-rock geochemical and zircon U-Pb data for monzogranites in the NE Xing'an block. These data constrained the petrogenesis of C type (high Sr/Y) adakitic rocks and showed the spatial extent of the influence of the Mongol-Okhostsk ocean tectonic regime and the collision between the Jiamusi Massif and Songliao Terrane. New zircon laser-ablation inductivity coupled plasma mass spectrometry (LA-ICP-MS) U-Pb data indicated that the monzogranites in the studied area were emplaced in the Early Jurassic (~ 180 Ma). These rocks were characterized by unusally high SiO2 (≥67.49), and Sr (461-759 ppm), but strikingly low Y (4.63-8.06 ppm) and HREE (∑HREE = 3.83-6.49 ppm, Yb = 0.5-0.77 ppm) contents, with therefore high Sr/Y (67.2-119) and (La/Yb)N (29.7-41.5) ratios, showing the geochemical characteristics of C type adakitic granite. The data displayed negligible Eu anomalies (Eu/Eu^* =0.77-1.08), LREE-enriched and pronounced negative Nb and Ta anomalies. The C-type adakites in the studied area were most likely derived from the partial melting of a thickened lower continental curst. The magma source is most likely dominated by amphibolites and garnet amphibolites. In combination with previously-reported data from igneous rocks from the Mesozoic in NE China, we conclude that the Xing' an block was influenced by the Mongol-Okhotsk subduction tectonic system, and experiences compressive settings from the amalgamation of the Jiamusi block in the east of the CAOB. 展开更多
关键词 C type adakite Geochemistry U-Pb age Thickened LCC NE xing an block
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Effects of meteorological factors on the defoliation dynamics of the larch caterpillar(Dendrolimus superans Butler)in the Great Xing’an boreal forests 被引量:4
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作者 Lei Fang Yue Yu +5 位作者 Guofei Fang Xu Zhang Zhijun Yu Xudong Zhang Ellen Crocker Jian Yang 《Journal of Forestry Research》 SCIE CAS CSCD 2021年第6期2683-2697,共15页
Larch caterpillars are widely distributed in the Great Xing’an boreal forests;however,the relationship between caterpillar defoliation dynamics and climatic factors is poorly understood.The aims of this study are to ... Larch caterpillars are widely distributed in the Great Xing’an boreal forests;however,the relationship between caterpillar defoliation dynamics and climatic factors is poorly understood.The aims of this study are to investigate the primary weather conditions that might influence forest defoliation and to identify the most important life stage of the larch caterpillar at which forest defoliation might be mitigated by incorporating more inhibitory influences from climatic factors.The life cycle of the larch caterpillar was partitioned into four stages and multiple linear regression and mixed effect models were combined with a relative weight analysis approach to evaluate the importance and influence of meteorological variables on defoliation dynamics.The results show that warmer temperatures in growing seasons and overwintering periods can increase the defoliation area,while rainy and humid growing seasons decrease the defoliation area.Total precipitation during the early instar larval period had the greatest power to explain the variance in defoliation dynamics and had a very strong inhibitory effect,followed by the accumulative temperatures of the late instar larval period which had a positive impact,and precipitation during the middle instar larval period which had a negative impact.Weather conditions during the early instar larval period had the greatest influence on the area defoliated and accounted for 40%of the explained variance.This study demonstrates that climatic warming and drying will increase the risk of larch caterpillar outbreaks in the Great Xing’an Mountains. 展开更多
关键词 Larch caterpillar Defoliation area Climatic warming Life cycle Great xing’an mountains Relative importance
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Felsic Igneous Rocks in the Hua'aobaote Pb-Zn-Ag Polymetallic Orefield,Southern Great Xing'an Range:Genesis,Metallogenetic and Tectonic Significance 被引量:4
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作者 SHANG Zhi CHEN Yongqing GUO Xiangguo 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2022年第1期221-239,共19页
The Hua’aobaote Pb-Zn-Ag Polymetallic orefield is situated in the southern section of the Great Xing’an Range(GXAR),which has experienced extensive magmatism.Since the Paleozoic,there are two stages of magmatism in ... The Hua’aobaote Pb-Zn-Ag Polymetallic orefield is situated in the southern section of the Great Xing’an Range(GXAR),which has experienced extensive magmatism.Since the Paleozoic,there are two stages of magmatism in Hua’aobaote orefield occurred in the Paleozoic and Mesozoic.The Mesozoic magmatism is of great significance for the PbZn-Ag Polymetallic mineralization in Hua’aobaote orefield.In this study,new geochemical data was obtained to discuss the timing and petrogenesis of the magmatic rocks and its geodynamic and metallogenic significance.Zircon U-Pb ages reveal that the felsic igneous rocks from the Hua’aobaote orefield were formed in the Early Permian(294.8±3.2 Ma)and Early Cretaceous(132.6±1.4 Ma).Geochemically,the Early Permian granodiorite porphyrite is characterized by high Sr/Y(42-63)ratios and Mg^(#)(62.24-70.74)values and low heavy rare earth element(HREE)(5.09-6.79 ppm)contents.The granodiorite porphyrite is also characterized by depleted Sr-Nd initial isotopic signatures[ε_(Nd)(t)=5.91-7.59,(^(87)Sr/^(86)Sr)i=0.7029-0.7030],exhibiting adakitic characteristics.The Early Cretaceous granite porphyry and rhyolite are A-type felsic igneous rocks,and demonstrate high SiO_(2),Na_(2)O+K_(2)O and rare earth element(REE)contents,low CaO and MgO contents,low(^(87)Sr/^(86)Sr)i ratios(0.7044-0.7058),and positive ε_(Nd)(t)values(2.57-4.65).Whole-rock Pb isotopic compositions in granodiorite porphyrite are:206Pb/204Pb=17.631-18.149,^(207)Pb/^(204)Pb=15.422-15.450,and ^(208)Pb/^(204)Pb=37.325-37.729.The granite porphyry and rhyolite have initial ^(206)Pb/^(204)Pb,^(207)Pb/^(204)Pb,and ^(208)Pb/^(204)Pb ratios of 18.106-19.309,15.489-15.539,and 37.821-38.05,respectively.Sr-Nd-Pb isotopic evidence suggests that the Early Permian granodiorite porphyrite is likely to derive from slab melts and modified by peridotitic mantle wedge in the subduction tectonic setting of the Paleo-Asian Ocean.The Early Cretaceous A-type felsic igneous rocks were derived from juvenile lower crust,accompanied by limited crustal contamination and various degree of fractional crystallisation during magma emplacement.The Early Cretaceous magmatism and related mineralization were formed in a post-orogenic tectonic setting that attributed to the closure of the Mongol-Okhotsk Ocean.Pb isotopic data for the various rock units in the study area indicate that the Mesozoic magma source contributed substantial Pb,Zn,and Ag to the Hua’aobaote deposit. 展开更多
关键词 southern Great xing’an Range Hua’aobaote zircon U-Pb age Sr-Nd-Pb isotopes metallogenetic and tectonic significance petrogenesis
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Evolution Rules and Spatial Features of Traditional Settlements in Fukou Xing Region 被引量:2
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作者 YUAN Lin LIU Gongxue XUE Binglin 《Journal of Landscape Research》 2018年第5期12-21,共10页
As one of the eight Taihang passes,Fukou Xing is located in the south of the Taihang Mountains and has been an important passage for Shanxi and Hebei in history.Taking traditional settlements in Fukou Xing Region as r... As one of the eight Taihang passes,Fukou Xing is located in the south of the Taihang Mountains and has been an important passage for Shanxi and Hebei in history.Taking traditional settlements in Fukou Xing Region as research object,using the Advanced Spaceborne Thermal Emission and Reflection Radiometer(ASTER) Global Digital Elevation Model(GDEM)(remote sensing measurement of elevation data) and GIS platform,this paper made a quantitative study on traditional settlement space in mountain environment of this region,and studied space parameters including elevation,terrain,aspect,and boundary,observed and summarized the spatial features.In addition,based on the local chronicles of Ming and Qing dynasties,it mutually verified the quantitative conclusions and qualitative cognition,analyzed the evolution rules of traditional settlements in Fukou Xing region,and finally obtained new understandings of spatial features of traditional settlements in Fukou Xing region. 展开更多
关键词 Fukou xing REGION TRADITIONAL SETTLEMENT Evolution RULES SPATIAL FEATURES GIS
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Magmatic Evolution and Mineralization Process of the Super-Large Shihuiyao Rb–Nb–Ta Deposit,Southern Great Xing'an Range,China 被引量:3
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作者 ZHOU Zhenhua CHE Hewei +1 位作者 MA Xinghua GAO Xu 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2016年第6期2275-2276,共2页
Rare metal ore reserves are an important strategic resource, and their metallogenic mechanism and mineralization studies have also been received widespread international attention.
关键词 In Nb Magmatic Evolution and Mineralization Process of the Super-Large Shihuiyao Rb Ta Deposit Southern Great xing’an Range China
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New Discovery of the Late Triassic Terrigenous Sediments in the Great Xing''an Range Region,NE China and its Geological Significance 被引量:3
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作者 LI Shichao ZHANG Lingyu +1 位作者 LIU Zhenghong XU Zhongyuan 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2017年第5期1928-1929,共2页
Objective The Great Xing'an Range is located in the eastern section of Central Asian Orogenic Belt(CAOB).As a superposed position of multiple tectonic domains,its structural evoIlution has always been a focused iss... Objective The Great Xing'an Range is located in the eastern section of Central Asian Orogenic Belt(CAOB).As a superposed position of multiple tectonic domains,its structural evoIlution has always been a focused issue of geological research. 展开更多
关键词 ICP MS Th New Discovery of the Late Triassic Terrigenous Sediments in the Great xing’an Range Region NE China and its Geological Significance NE
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Mathematical Reasoning of Treatment Principle Based on “Yin Yang Wu Xing” Theory in Traditional Chinese Medicine 被引量:5
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作者 Yingshan Zhang 《Chinese Medicine》 2011年第1期6-15,共10页
By using mathematical reasoning, this paper demonstrates the treatment principle: “Virtual disease is to fill his mother but real disease is to rush down his son” and “Strong inhibition of the same time, support th... By using mathematical reasoning, this paper demonstrates the treatment principle: “Virtual disease is to fill his mother but real disease is to rush down his son” and “Strong inhibition of the same time, support the weak” based on “Yin Yang Wu Xing” Theory in Traditional Chinese Medicine (TCM). We defined two kinds of opposite relations and one kind of equivalence relation, introduced the concept of steady multilateral systems with two non-compatibility relations, and discussed its energy properties. Later based on the treatment of TCM and treated the healthy body as a steady multilateral system, it has been proved that the treatment principle is true. The kernel of this paper is the existence and reasoning of the non-compatibility relations in steady multilateral systems, and it accords with the oriental thinking model. 展开更多
关键词 Traditional Chinese Medicine “Yin Yang WU xing THEORY STEADY Multilateral Systems Opposite RELATIONS Side Effects Medical and Drug Resistance Problem
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Study of seasonal snow cover influencing the ground thermal regime on western flank of Da Xing'anling Mountains,northeastern China 被引量:2
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作者 XiaoLi Chang HuiJun Jin +1 位作者 YanLin Zhang HaiBin Sun 《Research in Cold and Arid Regions》 CSCD 2015年第6期666-674,共9页
Although many studies relevant to snow cover and permafrost have focused on alpine, arctic, and subarctic areas, there is still a lack of understanding of the influences of seasonal snow cover on the thermal regime of... Although many studies relevant to snow cover and permafrost have focused on alpine, arctic, and subarctic areas, there is still a lack of understanding of the influences of seasonal snow cover on the thermal regime of the soils in permafrost regions in the mid-latitudes and boreal regions, such as that on the westem flank of the Da Xing'anling (Hinggan) Mountains, northeastern China. This paper gives a detailed analysis on meteorological data series from 2001 to 2010 provided by the Gen'he Weather Station, which is located in a talik of discontinuous permafrost zone and with sparse meadow on the observation field. It is inferred that snow cover is important for the ground thermal regime in the middle Da Xing'anling Mountains. Snow cover of 10-cm in thickness and five to six months in duration (generally November to next March) can reduce the heat loss from the ground to the atmosphere by 28%, and by 71% if the snow depth increases to 36 cm. Moreover, the occurrence of snow cover resulted in mean annual ground surface temperatures 4.7-8.2℃ higher than the mean annual air temperatures recorded at the Gen'he Weather Station, The beginning date for stable snow cover establishment (SE date) and the initial snow depth (SDi) also had a great influences on the ground freezing process. Heavy snowfall before ground surface freeze-up could postpone and retard the freezing process in Gen'he. As a result, the duration of ground freezing was shortened by at least 20 days and the maximum depth of frost penetration was as much as 90 cm shallower. 展开更多
关键词 snow cover thermal regime ground freezing Da xing'anling Mountains northeastern China
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The Cu-Mo Mineralization of the Late Jurassic Porphyry in the Northern Great Xing'an Range: Constraints from Zircon U-Pb Ages of the Ore-Causative Granites 被引量:1
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作者 DENG Changzhou LI Guanghui 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2019年第1期236-237,共2页
The Great Xing’an Range(GXAR)is one of the most important metallogenic belts in China.Previous study has shown that porphyry Cu-Mo deposit distributed in the northern Great Xing’an Range formed mainly in two stages:... The Great Xing’an Range(GXAR)is one of the most important metallogenic belts in China.Previous study has shown that porphyry Cu-Mo deposit distributed in the northern Great Xing’an Range formed mainly in two stages:(1)Early Ordovician,such as Duobaoshan and Tongshan deposits(Liu et al.,2017);2)Triassic-Early Jurassic,including Wunugetushan,Taipingchuan and Badaguan deposits(Tang et al.,2016).In recent years,two potential porphyry Cu-Mo deposits,Huoluotai and Xiaokele,were discovered in the Erguna Block,northern GXAR(Figs.1a–b).However,the ore formation ages and regional metallogenic regularity are ambiguous due to the lack of isotopic ages.Two zircon U-Pb ages from the ore-causative granites were reported in this paper,with the aims to constrain the metallogenic ages and provide evidence for study of the regional metallogenic regularity and ore prospect prediction. 展开更多
关键词 The GREAT xing’an Range(GXAR) GRANITES Cu-Mo
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Mathematical Reasoning of Treatment Principle Based on “Yin Yang Wu Xing” Theory in Traditional Chinese Medicine (II) 被引量:4
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作者 Yingshan Zhang 《Chinese Medicine》 2011年第4期158-170,共13页
By using mathematical reasoning, this paper demonstrates the treatment principle: “Do not treat a disease after it has occurred. But treat the disease before it will occur” (不治已病治未病) based on “Yin Yang Wu X... By using mathematical reasoning, this paper demonstrates the treatment principle: “Do not treat a disease after it has occurred. But treat the disease before it will occur” (不治已病治未病) based on “Yin Yang Wu Xing” Theory in Traditional Chinese Medicine (TCM). We defined generalized relations and reasoning, introduced the concept of generalized steady multilateral systems, and discussed its energy properties. Later based on the treatment of TCM and treated the healthy body as a steady multilateral system, it has been proved that the treatment principle above is true. The kernel of this paper is the existence and reasoning of the non-compatibility relations in steady multilateral systems, and it accords with the oriental thinking model. 展开更多
关键词 Traditional Chinese Medicine (TCM) “Yin Yang WU xing THEORY STEADY Multilateral Systems Opposite Relations SIDE-EFFECTS Medical and Drug Resistance Problem
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