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Hydrogeochemical and Isotopic Evidence for Flow Paths of Karst Waters Collected in the Heshang Cave,Central China

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Journal of Earth Science 2015年第1期26卷 149-156页

作者： Xiang Long Ziyong Sun Aiguo Zhou deliang liu School of Environmental Studies China University of Geosciences

Understanding of hydrological processes in caves is important to help us interpret paleoclimate records from speleothems. In this study, we integrated hydrogeological and hydrogeochemical properties to characterize the hydraulic behavior of karst waters in the Heshang Cave, Central China. Using geological and topographical analyses, we identified regional watershed boundaries and hydrogeological connections that were controlled by anticlinal geometry and faults. Water samples were collected from the Heshang Cave and potential recharge sites. Geochemical data of c（Sr^2＋）/c（Ca^2＋） and c（Mg^2＋）/c（Ca^2＋） ratios suggest that the drainage system in Heshang Cave consists of two flow paths. For vadose waters, including drip water and rimstone pool water, c（Sr^2＋）/c（Ca^2＋） ratio ranges from 0.000 6 to 0.001 1, and c（Mg^2＋）/c（Ca^2＋） ratio ranges from 0.97 to 1.1, indicating that recharge was mainly from rainfall infiltration through the overlying Cambrian dolomite stratum. In contrast, slope current and underground river waters have higher c（Sr^2＋）/c（Ca^2＋） ratios （values from 0.002 2 to 0.002 8）, and lower c（Mg2＋）/c（Ca^2＋） ratios （values from 0.50 to 0.64）. These waters show homogeneous isotopic composition （δ^18O： -7.15‰- -6.95‰; δD： -52.73‰- -51.31‰）, implying recharge of allogeneic water from the Xiaocr River via karst conduits that pass through Ordovician limestone and Cambrian dolomite stratum.

关键词： karst water hydrogeochemistry stable isotope flow path Heshang Cave.

Survived Seamount Reveals an in situ Origin for the Central Qiangtang Metamorphic Belt in the Tibetan Plateau

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Journal of Earth Science 2019年第6期30卷 1253-1265页

作者： deliang liu Rendeng Shi Lin Ding Shao-Yong Jiang State Key L aboratory of Geological Processes and Mineral Resources Collaborative Innovation Center for Exploration of Strategic Mineral ResourcesSchool of Earth ResourcesChina University of GeosciencesWuhan 430074China Key L aboratory of Continental Collision and Plateau Uplift Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China

The origin of the central Qiangtang metamorphic belt(CQMB)has long been in debate,which is not clear whether this belt is the exhumed Jinsha oceanic plate that had been subducted and underthrusted beneath the Qiangtang Block,or the in situ Longmu Co-Shuanghu suture that separated the south and north Qiangtang *** we report field observations,zircon U-Pb ages and Lu-Hf isotopes,as well as whole rock geochemistry and Sr-Nd isotopes of the Late Triassic volcanic rocks near the Chabo Co within the southern margin of the *** ca.229 Ma Chabo Co volcanic rocks and limestones possess characteristic lithologies of a *** geochemical and isotopic compositions are similar to OIB-type *** other metabasalts(eclogites and blueschists)in the CQMB,the Chabo Co volcanic rocks are OIB-type lavas that did not experience high-grade metamorphism;this is likely because that the Chabo Co seamount was detached from the subducting Longmu Co-Shuanghu oceanic *** work provides new solid evidences for an in situ origin of the CQMB.

关键词： volcanic rock OIB central Qiangtang metamorphic belt Longmu Co-Shuanghu Tibet

Study on estimate method of wave velocity and quality fac-tor to fault seals

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Chinese Science Bulletin 2005年第19期50卷 2243-2248页

作者： LI Zhensheng liu deliang liu Bo YANG Qiang LI dingming The School of Earth and Space Sciences University of Science and Technology of China Hefei 230026 China Research Institute of Petroleum Exploration and Development Petro- China Langfang 065007 China

Based on ultrasonic test of fault rocks, the re-sponses for wave velocity and quality factor (Q value) to lithology, porosity and permeability of fault rocks and me-chanical property of faults are studied. In this paper, a new quantitative estimate method of fault seals is originally of-fered. The conclusions are as follows: (1) Wave velocity and Q value increase and porosity decreases with the increase in stress perpendicular to joint; (2) In compressive and com-presso-shear fault rocks that are obviously anisotropic com-pared with their original rocks, the wave velocity and Q value are greater in the direction parallel with foliation, and usually less perpendicular to it. In tensile and tenso-shear fault rocks that are not obviously anisotropic, the wave ve-locity and Q value are under that of original rocks; (3) In foliated fault rocks, the direction with minimal wave velocity and Q value is the best direction for sealing; on the contrary it is the best for flowing; (4) Structural factures develop mainly along foliation, the minimal wave velocity and Q value reflect the flowing capacity in parallel direction to fo-liation, and the maximal wave velocity as well as Q value reflect the sealing capacity in normal direction to foliation. The new estimate method is based upon contrast of wave velocity and Q value between fault rocks and their original rocks, and is divided into three parts that are respectively to identify rock’s lithology, to judge mechanic property of faults and to Judge sealing capacity of faults. Although there is vast scale effect between ultrasonic wave and seismic wave, they have similar regularity of response to fabric and porosity of faults. This research offers new application for seismic data and petrophysical basis for seismological estimation of fault seals. The estimate precision will be improved with the en-hancement of three-dimensional seismic prospecting work.

关键词：超声波各向异性波速品质因素岩石学渗透性

Calculation of the CO2 Degassing during Contact Metamorphism and Its Geological Significance:The Model and Example from the Shuanshan Area of the South Tan-Lu Fault Belt

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Acta Geologica Sinica(English Edition) 2008年第3期82卷 562-576页

作者： YANG Xiaoyong liu deliang CHEN Yongjian DAI Jinxing CAS Key Laboratory of Crust-Mantle Materials and Environments School of Earth and Space Sciences University of Science and Technology of China Hefei 230026 China State Key Laboratory of Continental Dynamics Department of Geology Northwest University Xi＇an 710069 China The Institute of Research and Exploration for Oil and Natural Gas China ChiefOil and Natural Gas Corporation Beijing 100083 China

The paper studies CO2 degassing and controlling factors under the condition of contact metamorphism in the Shuangshan area, southern Tan-Lu fault belt and the method of calculating the amount of CO2 degassing. The results show that the amount of CO2 degassing is controlled by the characteristics of the country rocks, including the thermal conductivity, penetrability, porosity and connectivity. Compositions, size and depth of intrusive rock also have an important influence on CO2 degassing, i.e., they generated numerous cracks in the country rocks, and thus allowed the easy flow and accumulation of fluids. The amount of CO2 flux in contact metamorphism is calculated quantitatively based on the metamorphic reaction and time-integrated fluid flux. The value （0.729- 2.446×10^4 mol/cm^2） of CO2 flux suggests that CO2 was provided mainly by the contact metamorphic reaction. The generation and releasing of CO2 are positively correlated with the degree of metamorphism, and XCO2 in fluids gradually increases from dolomite zone to calcite zone, but in the zone of grossular, fluid flux is the largest and XCO2 sharply decreases due to involvement of magmatic water. This study presents evidence that a large amount of industrial-scale CO2 can be produced during contact metamorphism. On the basis of theoretical and practical studies, a cone model has been proposed to response CO2 degassing for the contact metamorphism, and it can be used to explore CO2 accumulations beyond the oil-gas basins. This model can also be applied to the study of inorganic genesis of CO2 accumulations.

关键词： Contact metamorphism CO2 degassing CO2 accumulations Tan-Lu fault belt

Rock Deformation,Component Migration and 18O/16O Variations during Mylonitization in the Southern Tan-Lu Fault Belt

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Acta Geologica Sinica(English Edition) 2007年第2期81卷 297-311页

作者： YANG Xiaoyong liu deliang FENG Min YU Qingni WANG Kuiren CAS Key Laboratory of Crust-Mantle Materials and Environments School of Earth and Space Sciences University of Science and Technology of China Hefei Anhui 230026 CAS Key Laboratory of Isotope Geochronology and Geochemistry Guangzhou Institute of Geochemistry Guangzhou Guangdong 510640

This paper discusses the relationship between the volume loss, fluid flow and component variations in the ductile shear zone of the southern Tan-Lu fault belt. The results show that there is a large amount of fluids flowing through the shear zone during mylonitization, accompanied with the loss of volume of rocks and variations of elements and oxygen isotopes. The calculated temperature for mylonitization in different mylonites ranges from 446 to 484℃, corresponding to that of 475 to 500℃ for the wall rocks. The condition of differential stress during mylonization has been obtained between 99 and 210 MPa, whereas the differential stress in the wall rock gneiss is 70-78 MPa. The mylonites are enriched by factors of 1.32-1.87 in elements such as TiO2, P2O5, MnO, Y, Zr and V and depleted in SiO2, Na2O, K2O, Al203, Sr, Rb and light REEs compared to their protolith gneiss. The immobile element enrichments are attributed to enrichments in residual phases such as ilmentite, zircon, apatite and epidote in mylonites and are interpreted as due to volume losses from 15% to 60% in the ductile shear zone. The largest amount of SiO2 loss is 35.76 g/100 g in the ductile shear zone, which shows the fluid infiltration. Modeling calculated results of the fluid/rock ratio for the ductile shear zone range from 196 to 1192 by assuming different degrees of fluid saturation. Oxygen isotope changes of quartz and feldspar and the calculated fluid are corresponding to the variations of differential flow stress in the ductile shear zone. With increasing differential flow stress, the mylonites show a slight decrease of δ^18O in quartz, K-feldspar and fluid.

关键词： mylonitization ductile shear zone component migration oxygen isotopes southern Tan- Lu fault belt

Hepatic Arterioportal Fistulas: A Retrospective Analysis of 97 Cases

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Journal of Clinical and Translational Hepatology 2022年第4期10卷 620-626页

作者： Bendaxin Cao Ke Tian Hejun Zhou Chenjie Li deliang liu Yuyong Tan Department of Respiratory and Critical Care Medicine Affiliated Nanhua HospitalUniversity of South ChinaHengyangHu-nanChina Department of Gastroenterology The Second Xiangya Hospital of Central South UniversityChangshaHunanChina Research Center of Digestive Disease Central South UniversityChangshaHunanChina

Background and Aims:Hepatic arterioportal fistulas(HAPFs)are abnormal shunts or aberrant functional con-nections between the portal venous and the hepatic arte-rial *** of HAPFs has increased with the ad-vances in diagnostic *** of HAPFs over a prolonged period can aggravate liver cirrhosis and further deteriorate liver ***,the underlying causes of HAPFs and the treatment outcomes are now well *** study aimed to summarize the clinical character-istics of patients with HAPFs,and to compare the outcomes of different treatment ***:Data of 97 pa-tients with HAPFs who were admitted to the Second Xiang-ya Hospital between January 2010 and January 2020 were retrospectively *** information,clinical manifestations,underlying causes,treatment options,and short-term outcomes were ***:The main cause of HAPF in our cohort was hepatocellular carcinoma(78/97,80.41%),followed by cirrhosis(10/97,10.31%).The main clinical manifestations were abdominal distention and abdominal *** methods included transcath-eter arterial embolization(n=63,64.9%),surgery(n=13,13.4%),and liver transplantation(n=2,2.1%);nineteen(19.6%)patients received conservative *** patients who underwent transcatheter arterial embolization,polyvinyl alcohol,lipiodol combined with gelatin sponge,and spring steel ring showed comparable ***:Hepatocellular carcinoma and cirrhosis are common causes of *** arterial embolization is a safe and effective method for the treatment of HAPFs,and polyvinyl alcohol,lipiodol combined with gelatin sponge,and spring steel ring showed comparable efficacy in our cohort.

关键词： Hepatic arterioportal fistulas Embolization Hepatocellular carcinoma Cirrhosis

Origin of middle Miocene leucogranites and rhyolites on the Tibetan Plateau: Constraints on the timing of crustal thickening and uplift of its northern boundary

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Chinese Science Bulletin 2012年第5期57卷 511-524页

作者： ZHANG LiYun DING Lin YANG Di XU Qiang CAI FuLong liu deliang Key Laboratory of Continental Collision and Plateau Uplift Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100085China Graduate University of Chinese Academy of Sciences Beijing 100049China

Leucogranites 玩在理解外壳的变厚的一个重要角色，融化在大陆人 collisional 带，和高原以内高举。地调查证明来自霍·克西尔·莱克区域的中新世的火的岩石主要由二云母的 leucogranites 和流纹岩组成。我们学习了由锆石 U-Pb，白云母... 详细信息

Leucogranites 玩在理解外壳的变厚的一个重要角色，融化在大陆人 collisional 带，和高原以内高举。地调查证明来自霍·克西尔·莱克区域的中新世的火的岩石主要由二云母的 leucogranites 和流纹岩组成。我们学习了由锆石 U-Pb，白云母和 sanidine 40Ar/39Ar 地球年代学的 Bukadaban 二云母的 leucogranites 和凯考·莱克， Malanshan 和 Hudongliang 流纹岩，和整个岩石的 geochemical 和 Sr-Nd 同位素的分析。结果为 9.7 的 Bukadaban leucogranites 产出结晶化和冷却年龄 ????? ‰ ?????? 椠湯獯桰牥捩吗？？

关键词：淡色花岗岩时间约束地壳增厚青藏高原中中新世流纹岩自然科学基金会边界

Finding of high-pressure mafic granulites in the Amdo basement,central Tibet

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Chinese Science Bulletin 2010年第32期55卷 3694-3702页

作者： ZHANG XiaoRan SHI RenDeng HUANG QiShuai liu deliang CIDAN SuoLang YANG JingSui DING Lin Key Laboratory of Continental Collision and Plateau Uplift Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100085 China School of Sciences Tibetan University Lhasa 850000 China Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China

High-pressure mafic granulites with a peak mineral assemblage of garnet + clinopyroxene + rutile + quartz were found in the Amdo basement,central Tibet. Two kinds of symplectites were identified that are composed of orthopyroxene + plagioclase ± spinel and hornblende + plagioclase around garnet,which were interpreted to develop during the retrogressing stages in the granulites. P-T estimates suggested that peak metamorphic conditions were about 860-920°C and 1.46-1.56 GPa,which retrogressed from post-peak phase at 820-890°C and 0.88-1.15 GPa to amphibolite facies at 550-670°C and 0.52-0.65 GPa. These three stages define a clockwise P-T path with near-isothermal decompression and cooling following the peak high-pressure metamorphism. This suggests that the Amdo granulites underwent an initial subduction to a deep crustal level of ～50 km and then were rapidly exhumed to a shallow crustal level (～20 km). The formation of Amdo granulites is considered to result from the arc-continent collision between the Amdo basement and the Qiangtang terrane in the middle Jurassic,which is a crucial step to the tectonic evolution of the Tibetan Plateau.

关键词：高压基性麻粒岩西藏中部地下室高压变质作用矿物组合变质条件角闪岩相 PT轨迹

Reconstruction and Extension Project of Jianying Park in Meizhou

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Journal of Landscape Research 2017年第4期9卷 13-16页

作者： liu deliang XIE Haifeng School of Life Science Jiaying University

Founded in 1986, Jianying Park represents a momentous comprehensive park in Meizhou. Recent years have witnessed the rehabilitation and expansion grounded of that park on its original appearance. This paper, on the basis of analyzing and discussing the existing problems of the original park, combines the principles and requirements of urban park landscape design and adds the concept of ecological waters design, so as to integrate the cultural characteristics of Meizhou into Jianying Park. The project adopts user-friendly design in an effort to create a unique scenic spot and all kinds of markers standing for Marshal Ye Jianying.

关键词： Jianying Park Meizhou Reconstruction and extension