IOCAS-IR研究单元&专题: 深海极端环境与生命过程研究中心<p>深海研究中心由海洋生物学、海洋生态学、海洋地质学、地球化学和海洋技术等多个学科的一线中青年科研人员组成。中心聚焦典型深海系统,以深海生态系统为突破口,理解生命起源、物种进化等重大科学问题。将海山、热液及冷泉等典型深海系统作为主要研究对象,开展地质过程-化学过程-生物过程的综合性研究。从海洋系统的角度,强调地学与生物学的耦合研究,强调极端环境对生物的制约以及特殊生命过程对极端环境的适应,注重科学与技术的融合,强调科学目标引领下的技术研发。以建成国际一流的深海研究数据平台、深海样品库和基因资源库为目标。 </p>http://ir.qdio.ac.cn:80/handle/337002/1364162024-03-29T11:56:41Z2024-03-29T11:56:41ZThe formation of explosive volcanos at the circum-Pacifi c convergent margin during the last centuryTian FanFan(田凡凡)Wang KunXie GuozhiSun Weidonghttp://ir.qdio.ac.cn:80/handle/337002/1834832023-12-18T02:46:09Z2023-12-18T02:46:49Z题名: The formation of explosive volcanos at the circum-Pacifi c convergent margin during the last century
作者: Tian FanFan(田凡凡); Wang Kun; Xie Guozhi; Sun Weidong2023-12-18T02:46:49ZThe formation of supercritical carbon dioxide hydrothermal vents in the Okinawa TroughTian FanFan(田凡凡)Li RuiXie GuozhiWang KunZhang LipengZhang XinSun Weidonghttp://ir.qdio.ac.cn:80/handle/337002/1834822023-12-18T02:44:12Z2023-12-18T02:40:05Z题名: The formation of supercritical carbon dioxide hydrothermal vents in the Okinawa Trough
作者: Tian FanFan(田凡凡); Li Rui; Xie Guozhi; Wang Kun; Zhang Lipeng; Zhang Xin; Sun Weidong2023-12-18T02:40:05ZToxicological effects of cadmium on deep-sea mussel Gigantidas platifrons revealed by a combined proteomic and metabolomic approachZhou, LiLi, MengnaZhong, ZhaoshanChen, HaoWang, MinxiaoLian, ChaoWang, HaoZhang, HuanCao, LeiLi, Chaolunhttp://ir.qdio.ac.cn:80/handle/337002/1833532023-12-13T02:42:09Z2023-12-13T02:42:09Z题名: Toxicological effects of cadmium on deep-sea mussel Gigantidas platifrons revealed by a combined proteomic and metabolomic approach
作者: Zhou, Li; Li, Mengna; Zhong, Zhaoshan; Chen, Hao; Wang, Minxiao; Lian, Chao; Wang, Hao; Zhang, Huan; Cao, Lei; Li, Chaolun
摘要: IntroductionMarine metal contamination caused by deep-sea mining activities has elicited great concern from both social and scientific communities. Among the various metals deep-sea organisms might encounter, cadmium (Cd) is a widely detected metal that in very small amounts is nonetheless capable of severe toxicity. Yet due to both remoteness and technical challenges, insights into the effects of metal exposure resulting from mining activities upon deep-sea organisms are limited. MethodsHere, we investigated Cd's toxicological effects on deep-sea mussels of Gigantidas platifrons exposed to 100 or 1000 g/L of Cd for 7 days; an integrated approach was used that incorporated proteomics and metabolomics along with traditional approaches (metal concentrations, metal subcellular distribution, and anti-oxidative and immune-related biochemical indexes). Results and DiscussionResults showed that Cd exposure caused significant Cd's accumulation in mussel gills and redistribution of Cd among subcellular compartments, with cellular debris being the primary binding site. Although anti-oxidative enzymes activities (superoxide dismutase and catalase) were not significantly altered in mussel gills of both exposed groups, the markedly increased level of glutathione S-transferase detected via proteomic technique clearly evinced that deep-sea mussels suffered from oxidative stress under Cd exposure. Besides, altered activities of acid phosphatase and alkaline phosphatase assayed by traditional methods along with the predominant presence of largely altered immune-related proteins detected by proteomic data strongly revealed an immune response of deep-sea mussels elicited by Cd. In addition, results of proteomics combined with those of non-targeted metabolomics demonstrated that Cd could exert toxicity by disrupting cytoskeleton structure, ion homeostasis, and primary metabolisms of energy, lipid, and nucleotide in deep-sea mussels. As demonstrated in this study, proteomics and metabolomics can be used in tandem to provide valuable insights into the molecular mechanisms of deep-sea organisms' response to Cd exposure and for helping to discover potential biomarkers for application during deep-sea mining assessments.2023-12-13T02:42:09ZComparison of Granites from the Eastern and Western Districts of the Gejiu Ore District in South China: Implication for Petrogenesis and Tin MetallogenySun, SaijunZhang, JunjieLi, ShuangNiu, HaobinWu, ZhaojianSun, Weidonghttp://ir.qdio.ac.cn:80/handle/337002/1832452023-12-13T02:09:09Z2023-12-13T02:09:09Z题名: Comparison of Granites from the Eastern and Western Districts of the Gejiu Ore District in South China: Implication for Petrogenesis and Tin Metallogeny
作者: Sun, Saijun; Zhang, Junjie; Li, Shuang; Niu, Haobin; Wu, Zhaojian; Sun, Weidong
摘要: Late Cretaceous granitoids are developed in the eastern and western districts of the Gejiu ore district, but tin deposits mainly occur in the eastern district, and the reasons for the difference in mineralization between the eastern and western districts are still controversial. Considering the main factors controlling granite Sn fertility, the whole-rock geochemical characteristics of granites on both sides are compared. LA-ICP-MS zircon U-Pb analyses of the Gejiu granites yielded two age periods: the early phase from 79.2 to 83.3 Ma and the later phase from 73.8 to 75.6 Ma. The western district granites have higher zircon e(Hf)(t), CaO/Na2O, Ba, and Sr concentrations and lower Rb/Sr ratios than the eastern district granites, indicating that the western district granites have more mantle-derived materials in the source than the eastern district granites. Results of oxygen fugacity show that the western granites have a higher oxygen fugacity condition. More depleted Ba, Sr, P, Eu and Ti characteristics with obviously negative Eu anomalies in the eastern granites also have high Rb/Sr ratios and low Nb/Ta and Zr/Hf ratios, indicating that the eastern granites experienced highly magmatic differentiation, attributed to high volatile F contents that can reduce the viscosity and solidus of magma. Combined with the differences in field observations and structural styles, on the whole, the western district granites have higher oxygen fugacities and lower F contents and magmatic differentiation than those in the eastern district granites, indicating that the western district granites are not conducive to mineralization.2023-12-13T02:09:09ZFrom the Yanshan orogeny to Late Mesozoic multi-plate convergence in East AsiaWang, QinSun, WeidongFaure, MichelLi, Hehttp://ir.qdio.ac.cn:80/handle/337002/1832022023-12-13T02:08:39Z2023-12-13T02:08:39Z题名: From the Yanshan orogeny to Late Mesozoic multi-plate convergence in East Asia
作者: Wang, Qin; Sun, Weidong; Faure, Michel; Li, He2023-12-13T02:08:39ZDifferent Magmatic-Hydrothermal Fluids at the Same Magma Source Support Distinct Microbial Communities: Evidence From In Situ DetectionXi, ShichuanSun, QingleiHuang, RuifangLuan, ZhendongDu, ZengfengLi, LianfuZhang, Xinhttp://ir.qdio.ac.cn:80/handle/337002/1831962023-12-13T02:08:36Z2023-12-13T02:08:35Z题名: Different Magmatic-Hydrothermal Fluids at the Same Magma Source Support Distinct Microbial Communities: Evidence From In Situ Detection
作者: Xi, Shichuan; Sun, Qinglei; Huang, Ruifang; Luan, Zhendong; Du, Zengfeng; Li, Lianfu; Zhang, Xin
摘要: Submarine magmatic-hydrothermal systems are dominated by volcanism and generate unique biocenoses. However, the relationships between the microbial communities and the broad range of chemical and physical variability within the systems are poorly understood. Here, a high-precision in situ Raman quantitative technique was used for the hydrothermal fluids at the Onsen site and a newly found site named Faxian in a magmatic-hydrothermal system at the DESMOS caldera, Manus back-arc basin. The maximum in situ H-2 concentration (8.56 mmol/kg) at the Onsen site is the highest value ever reported in similar hydrothermal systems. In contrast, the diffuse fluid at the Faxian site was characterized by rich H2S (7.78 mmol/kg) but without H-2. The differences in mixing contents of seawater induced different geochemical reactions and fluxes of hydrogen and hydrogen sulfide. Furthermore, the existence of hydrogen- and sulfide-oxidizing genes suggests that the oxidation of hydrogen and hydrogen sulfide are the energy sources of the microbial communities at the two sites even within the same magma source. The in situ quantitative analyses of different types of fluids provide implications on the materials fluxes in the magmatic-hydrothermal system, and the relationships between widespread submarine volcanic activities and life in early Earth.2023-12-13T02:08:35ZThe development and applications of a controllable lander for in-situ, long-term observation of deep sea chemosynthetic communitiesDu, ZengfengZhang, XiongLian, ChaoLuan, ZhendongXi, ShichuanLi, LianfuMa, LiangZhang, JianxingZhou, WenzaoChen, XiufengLu, ZhijunWang, ChuanboChen, YuYan, JunZhang, Xinhttp://ir.qdio.ac.cn:80/handle/337002/1831842023-12-13T02:08:27Z2023-12-13T02:08:26Z题名: The development and applications of a controllable lander for in-situ, long-term observation of deep sea chemosynthetic communities
作者: Du, Zengfeng; Zhang, Xiong; Lian, Chao; Luan, Zhendong; Xi, Shichuan; Li, Lianfu; Ma, Liang; Zhang, Jianxing; Zhou, Wenzao; Chen, Xiufeng; Lu, Zhijun; Wang, Chuanbo; Chen, Yu; Yan, Jun; Zhang, Xin
摘要: Understanding the evolution of chemosynthetic communities and environmental changes near fluid seepages in the deep sea requires in-situ long-term observation data. However, in-situ detection or sampling for the investi-gation of cold seeps, hydrothermal vents, and nearby chemosynthetic ecosystems, by manned submersibles and remotely operated vehicles (ROVs), has great restrictions in terms of time. The observation parameters of a free fall mode Lander cannot be adjusted in real time because there is no communication channel once the Lander is separated from the vessel. A long-term ocean observation platform (LOOP), that uses a new controllable mode for launching and recovery with the aid of a research vessel and submarine vehicles, has been developed and used in the cold seep area of the South China Sea. The LOOP can be operated in an online real-time control mode allowing landing site selection and adjustment of observation parameters during the launching process, with subsequent switched to an offline stand-alone operation mode for long-term, continuous observation. The effective observation times were 375 days and 414 days, respectively, during the 2016 and 2018 deployments in the cold seep area in the South China Sea. Results of these deployments show that salinity and dissolved oxygen parameters have strong spatial heterogeneity in both the horizontal and vertical directions within the cold seep vent. The spatial heterogeneity of environmental parameters may be one of the main driving factors for the uneven spatial distribution of chemosynthetic communities in cold seep areas. Overall, the LOOP provides an innovative and controllable launching and recovery mode and is expected to become a universal underwater observation platform for in-situ, long-term, and continuous data acquisition.2023-12-13T02:08:26ZCarbon isotope of the Early Cretaceous sediments from the West Pacific and the Sulu orogenic belt: Implying the global atmospheric pCO2 changes during the Early Aptian Oceanic Anoxic Event 1aWu, Si-fanLi, Cong-yingHuang, Jinghttp://ir.qdio.ac.cn:80/handle/337002/1831512023-12-13T02:08:06Z2023-12-13T02:08:05Z题名: Carbon isotope of the Early Cretaceous sediments from the West Pacific and the Sulu orogenic belt: Implying the global atmospheric pCO2 changes during the Early Aptian Oceanic Anoxic Event 1a
作者: Wu, Si-fan; Li, Cong-ying; Huang, Jing
摘要: Multiple lines of evidence revealed that enormous CO2 was input into the ocean-atmosphere system during Oceanic Anoxic Event 1a (OAE 1a), which led to a series of environmental perturbations (e.g. temperature rising, enhanced weathering, promoted primary productivity and marine anoxia). Among them, increased carbon isotope fractionation (Delta 13Ccarb-org) between the carbonate (delta 13Ccarb) and organic carbon (delta 13Corg) in the sedi-ments is one of the most important indicators to the enhanced atmospheric pCO2. However, only a few research reported high-resolution paired carbon isotopes during OAE 1a, which were almost limited around the western Tethys. Here, we report new paired carbon isotopes of the Early Cretaceous sediments from the ODP site 866A in the western Pacific and the Lingshan Island section in the Sulu orogenic belt. The delta 13Ccarb curves from both sections correlate well with OAE 1a, in which a positive delta 13Ccarb excursion is identified between the C3-C6 segments. The Delta 13Ccarb-org displays a-7-11 parts per thousand positive shift coinciding with the delta 13Ccarb excursion, indicating a remarkable increase and a gradual decrease in CO2 in water and atmosphere, which further support significant atmospheric pCO2 changes during OAE 1a on a global scale. The sediments also show a few variations in carbon isotope records during OAE 1a between different locations, which may reflect different influences from local environments, and the deviations of stratigraphic correlation and diagenesis cannot be ruled out either.2023-12-13T02:08:05ZThe foundering of stagnant slabs bearing oceanic plateau into the lower mantleLiu, XiLi, JuanZhang, ZhigangSun, Weidonghttp://ir.qdio.ac.cn:80/handle/337002/1831022023-12-13T02:02:45Z2023-12-13T02:02:45Z题名: The foundering of stagnant slabs bearing oceanic plateau into the lower mantle
作者: Liu, Xi; Li, Juan; Zhang, Zhigang; Sun, Weidong
摘要: The oceanic plateau is proposed to be produced by the plume head. Seeking the missing plume head associated with seamount chains is an important task to evaluate the plume theory. While the subduction initiation and process of the oceanic plateau is debatable, recent seismic studies suggest that the Hawaiian-Emperor oceanic plateau has been subducted into the lower mantle. The sinking rate is higher than previously estimated and even higher than that of the normal slab. It is intriguing, as the phase transitions would cause a density barrier for the basaltic materials from-660-km to-720-km depths, and slow down the subduction of the slabs, especially for the oceanic plateau with a thickened basaltic crust. Here, we perform geodynamic numerical experiments to investigate the foundering process of flat stagnant slabs from the transition zone into the lower mantle. We compare models of both the normal slab and slabs bearing oceanic plateau and suggest that a basaltic underplate layer beneath the peridotite mantle lithosphere in the oceanic plateau can lead to a higher foundering rate. The underplated oceanic plateau can reach-1000-km depth in-50 Myrs. These models provide a new perspective in understanding the fate of subducted oceanic plateau, suggesting that missing plume heads might be found in the lower mantle.2023-12-13T02:02:45ZThe metallogenic mechanism of the Dadengge gold polymetallic deposit in the Jiaodong Peninsula: Constraints from pyrite Rb-Sr dating, in situ S isotope and trace elementsWang MeiYunLi HeSong MingChunZhang LiPengTang ZongYuanDing Zhengjianghttp://ir.qdio.ac.cn:80/handle/337002/1830872023-12-13T02:02:35Z2023-12-13T02:02:35Z题名: The metallogenic mechanism of the Dadengge gold polymetallic deposit in the Jiaodong Peninsula: Constraints from pyrite Rb-Sr dating, in situ S isotope and trace elements
作者: Wang MeiYun; Li He; Song MingChun; Zhang LiPeng; Tang ZongYuan; Ding Zhengjiang
摘要: The Dadengge gold polymetallic deposit is located in the eastern part of the Jiaodong Peninsula, and is the only polymetallic deposit of gold, silver, lead, zinc and copper found in this area at present. Different from the famous Jiaodong gold concentration area, which is mainly located in the Jiaobei terrane on the southeastern margin of the North China Craton, the Dadengge deposit is located in the Weihai ultrahigh-pressure metamorphic belt at the easternmost end of the Sulu-Dabie orogenic belt. It is of great significance to accurately define the metallogenic age and source of ore-forming materials of the Dadengge deposit for further understanding the mineralization of different tectonic settings in the Mesozoic era in Jiaodong area. This paper selects pyrite in the main ore forming stage of the Dadengge gold polymetallic deposit to carry out Rb-Sr isotope dating and in-situ sulfur isotope and trace element analysis, so as to limit the regional metallogenic age, the source of metallogenic materials and the metallogenic mechanism. The results show that the Rb-Sr isotope isochron age of pyrite is 109.8 +/- 1.7Ma (MSWD = 1.4), which is consistent with the metallogenic age of the molybdenum, copper and other non-ferrous metal deposits in this region, and slightly later than the age of the large-scale gold deposit explosion in Jiaodong (similar to 120Ma). The sulfur isotope in the main mineralization stage is in the range of -1.20 parts per thousand similar to 6.65 parts per thousand. Pyrite is rich in thiophile elements such as Cu, Pb, Zn, Co, Ni, and the Co/Ni ratio is 0.03 similar to 1.36. The Dadengge gold polymetallic deposit is spatially located in the periphery of the Guzhuang unit of the Weideshan rock mass, and it's diagenetic and metallogenic ages are consistent, indicating that they have close genetic relations. According to comprehensive analysis, the Early Cretaceous mineralization in Jiaodong was controlled by the thermal uplift-extension tectonic environment related to the subduction of the ancient Pacific plate and the destruction of the North China Craton, and the eastward retreat of the subduction plate resulted in the difference of regional mineralization age between the west and the east.2023-12-13T02:02:35Z