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Journal of Earth Science 2023年第3期34卷 717-725页

作者： ruxin ding Guangdong Provincial Key Lab of Geodynamics and Geohazards School of Earth Sciences and EngineeringSun Yat-Sen UniversityZhuhai 519000China Guangdong Provincial Key Lab of Mineral Resources and Geological Processes and Mineral Resources Zhuhai 519000China Low-T Lab Shanghai 201101China

Low temperature thermochronology plays a key role in the study of the tectonic evolution of the upper crust.History modeling of apatite fission-track requires the apparent age and the confined track-length distribution of spontaneous tracks.Obtaining length data does not require either thermal neutron irradiation or LA-ICP-MS measurements of the uranium content of the grains.This paper attempts to decouple the apatite fission-track age from the apatite fission-track length,but to combine the fission-track lengths with the respective apatite U-Th/He age to model the thermal history.The experiments were designed and conducted using a new Mathematica®modeling software“Low-T Thermo”.Results of this modeling show that the thermal history modeling of apatite U-Th/He and fission-track ages can constrain the apatite fission-track length thermal history in the He partial retention zone and fission-track partial annealing zone,respectively.It implies that this combination of apatite fissiontrack length and apatite U-Th/He age has not been implemented before but is presented here as an alternative way of determining thermal histories without the addition of apatite fission-track age.

关键词： thermal history modeling apatite fission track U-Th/He tectonics

Quantitative Measurement of Bedding Orientation Using Remote Sensing Data:Yili Basin,Northwest China

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Journal of Earth Science 2018年第3期29卷 689-694页

作者： Zhenghai Wang Weilong Lin ruxin ding School of Earth Science and Engineering Sun Yat-sen UniversityGuangzhou 510275China Guangdong Provincial Key Laboratory of Mineral Resources and Geological Processes Guangzhou 510275China

Bedding orientation measurement is a remote sensing application used in the field of geology, but the results are often unsatisfactory when the bed is dislocated along the strike direction. This paper proposes a new method called multiple-line method that is designed to improve bedding orientation measurement. This technique uses the bed as a vector, and fits the vectors as a plane to obtain the bedding orientation. This study employs the case of Yili Basin and measures 25 bedding orientations using the multiple-point and multiple-line methods, respectively. The result shows that the errors from the multiple-line method are mostly smaller than those from the multiple-point method when a bed is discontinuous.

关键词： bedding orientation multipsle-line method remote sensing Yili Basin.

Inversion of the paleo-geothermal gradient using low-temperature thermochronology: A case study of the Haiyuan -Liupanshan region

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Journal of Earth Science 2023年

作者： ruxin ding Zhenghai Wang Kyoungwon Min Nina Liu Cleber Soares Jing Liu-Zeng Weitao Wang School of Earth System Science Tianjin University Guangdong Provincial Key Lab of Geodynamics and Geohazards School of Earth Sciences and Engineering Sun Yat-sen University Key Laboratory of Western China's Mineral Resource and Geological Engineering Ministry of Education Chang'an University 6. ChronusCamp Research-Thermochronology Analysis LTD Guangdong Provincial Key Laboratory of Mineral Resources & Geological Processes Department of Geological Sciences University of Florida Southern Laboratory of Ocean Science and Engineering

The paleo-geothermal gradient is a crucial parameter for converting the thermal history to the exhumation history. However， the precise estimation of this parameter has been a challenge. This paper presents a simple two-step method to model the paleo-geothermal gradient using low-temperature thermochronology. (1) It uses the Monte Carlo approach to generate thermal histories in a vertical section randomly and calculates the entire thermal history within the goodness-of-fit thresholds based on different paleo-geothermal gradients. (2) It selects the optimum paleo-geothermal gradient by comparing the entire thermal history within different goodness-of-fit thresholds. We validated the method with apatite (U-Th)/He and fission track data collected from two drill cores in the Haiyuan-Liupanshan region. The result revealed that the best-fit paleo-geothermal gradient was ～42 ℃/km during the Early Cretaceous–Miocene and has decreased rapidly to 20 ℃/km since ～10 Ma. The crust thickening in the study area may explain the rapid reduction in the paleo-geothermal gradient since ～10 Ma. Our results are consistent with earlier studies in the region， suggesting that our simple and more intuitive approach provides an alternative method for paleo-geothermal gradient modeling.

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新矿物(U-Th)/He年代学的研究进展

地球科学进展 2024年第4期39卷 357-373页

作者：陈玉柳丁汝鑫孙转卢胜城广东省地球动力作用与地质灾害重点实验室中山大学地球科学与工程学院广东珠海519082 广东省地质过程与矿产资源探查重点实验室广东珠海519082 中国石油辽河油田勘探开发研究院辽宁盘锦124010

自20世纪末(U-Th)/He定年技术诞生以来,(U-Th)/He定年在地质学等领域发挥着越来越重要的作用,尤其是磷灰石及锆石的(U-Th)/He定年技术得到了广泛应用,然而这两种矿物在自然界中的分布相对有限,极大地限制了(U-Th)/He年代学的发展。近年... 详细信息

自20世纪末(U-Th)/He定年技术诞生以来,(U-Th)/He定年在地质学等领域发挥着越来越重要的作用,尤其是磷灰石及锆石的(U-Th)/He定年技术得到了广泛应用,然而这两种矿物在自然界中的分布相对有限,极大地限制了(U-Th)/He年代学的发展。近年来,随着He扩散动力学研究的不断深入和分析测试技术的提高,其他矿物的(U-Th)/He定年技术也得到了长足进步,理论与技术方法也日臻完善,为(U-Th)/He年代学开辟了新的应用领域。此外,不同类型的矿物记录了不同的地质信息,通过结合多种矿物的(U-Th)/He定年数据,将增进对地质过程的理解。基于(U-Th)/He定年新理论和新技术的发展,总结了赤铁矿、针铁矿、磁铁矿、碳酸盐矿物、牙形石、萤石、钙钛矿、尖晶石、金红石以及石榴子石等矿物的(U-Th)/He定年,重点介绍了相对成熟的赤铁矿、针铁矿、磁铁矿、碳酸盐矿物以及牙形石的(U-Th)/He定年的研究进展。目前,这些新矿物的(U-Th)/He定年在矿床学、沉积学、构造地质学、地球动力学和环境科学等领域得到了初步应用,尤其在约束成矿时代、古环境古气候重建、洋壳蚀变和俯冲剥露过程、热液活动、断裂变形以及古地震研究等方面将发挥关键作用。然而,这些新矿物的(U-Th)/He年代学仍存在不少问题,限制了这些方法的广泛推广与应用,比如多扩散域行为、辐射损伤和化学成分对He扩散的影响、加热脱气过程中母体同位素的挥发以及(U-Th)/He体系的开放行为等,这些因素将导致(U-Th)/He年龄数据表现出较大的分散性。因此,未来需要进一步研究He在这些矿物中的扩散行为,改善实验方法并提高仪器测试精度,以确保(U-Th)/He定年数据的准确性,为理解地质过程提供更加可靠的时间框架。

关键词： (U-Th)/He定年赤铁矿针铁矿磁铁矿碳酸盐矿物牙形石

Metallogenic age of the Qianjiadian uranium deposit--evidence from fluid inclusions and(U-Th)/He

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Journal of Earth Science 2023年

作者： ruxin ding Yangshijia Li Zilong Li Rongli Huang Minqiang Cao Xingzhou Chen Hui Rong Heping Zou Guangdong Provincial Key Lab of Geodynamics and Geohazards Development Company of New Energy Sources of Liaohe Petroleum Exploration Bureau CNPC Key Laboratory of Tectonics and Petroleum Resources (China University of Geosciences)， Ministry of Education Guangdong Provincial Key Lab of Geological Processes and Mineral Resource Survey， School of Earth Sciences and Engineer Sun Yat-sen University Research Institute of Petroleum Exploration and Development Liaohe Oilfield Company， CNPC Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)

The metallogenic age of sandstone-type uranium deposits has always been a scientific problem to be solved in uranium exploration. This paper proposes a method combining the homogenization temperature of secondary fluid inclusions with the apatite (U-Th)/He dating method to determine the metallogenic age related to fluid trapping. The dates of apatite (U-Th)/He can be used as the lower limit of the metallogenic age when the closure temperature of apatite (U-Th)/He is less than the homogenization temperature of the secondary fluid. The samples of the uranium deposits in the Qianjiadian sag show that the homogenization temperatures of secondary fluid inclusions in the ore-bearing horizon are about 83-204 ℃ with a peak of 110-115 ℃， and the apatite (U-Th)/He dates in the same horizon vary between 29.0 ± 1.5-41.8 ± 2.7 Ma. Because the homogenization temperatures of secondary fluid are greater than the closure temperature of apatite (U-Th)/He (75 ± 5 ℃)， the dates of apatite (U-Th)/He (29.0 ± 1.5-41.8 ± 2.7 Ma) are considered as the lower limit of the metallogenic age.

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中非乍得Bongor盆地北部斜坡下白垩统油气成藏期次

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石油勘探与开发 2024年第1期51卷 127-136页

作者：王利聂志泉杜业波王林孟凡超陈玉柳胡杰丁汝鑫中国石油勘探开发研究院北京100083 中国石油国际勘探开发有限公司北京100034 中国石油大学(华东)地球科学与技术学院山东青岛266580 中山大学地球科学与工程学院广东珠海519082

基于流体包裹体均一温度测试和磷灰石裂变径迹分析,对乍得Bongor盆地北部斜坡下白垩统油气成藏时间和期次开展研究。研究表明,下白垩统Kubla组和Prosopis组储集层样品中与油气共生的盐水流体包裹体均一温度总体上表现为高、低温两组峰... 详细信息

基于流体包裹体均一温度测试和磷灰石裂变径迹分析,对乍得Bongor盆地北部斜坡下白垩统油气成藏时间和期次开展研究。研究表明,下白垩统Kubla组和Prosopis组储集层样品中与油气共生的盐水流体包裹体均一温度总体上表现为高、低温两组峰值区间,低温峰值区间和高温峰值区间分别为75~105℃和115~135℃;Kubla组和Prosopis组样品均经历了5个构造演化阶段,即早白垩世发生快速沉降,晚白垩世晚期发生构造反转,古近纪发生小幅沉降,古近纪与新近纪之交抬升,中新世以来则处于沉降阶段;其中晚白垩世剥蚀厚度约1.8km,古近纪与新近纪之交剥蚀厚度约0.5 km,两期剥蚀叠加厚度约2.3 km。与油气包裹体共生的盐水包裹体的均一温度用以作为油气捕获温度,结合磷灰石裂变径迹热演化史模拟研究,结果表明Bongor盆地北部斜坡下白垩统Kubla组和Prosopis组具有一致的油气成藏时间和期次,均在距今80~95 Ma和65~80 Ma分别经历了两期油气充注。第1期充注对应于油气初始运移,为早白垩世快速沉积末期,第2期充注处于晚白垩世构造强烈反转阶段。

关键词：中非乍得 Bongor盆地下白垩统油气成藏期次流体包裹体磷灰石裂变径迹

Detrital Zircon U-Pb Geochronologyof Sinian–Cambrian Strata in the Eastern Guangxi Area, China

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Journal of Earth Science 2017年第2期28卷 295-304页

作者： ruxin ding Heping Zou Kyoungwon Min Feng Yin Xiaodong Du Xuxuan Ma Zhangxin Su Wenjie Shen School of Earth Science and Geological Engineering Sun Yat-sen University Guangzhou 510275 China Guangdong Provincial Key Laboratory of Mineral Resources & Geological Processes Guangzhou 510275 China Department of Geological Sciences University of Florida Gainesville FL 32611 USA Exploration Branch Company SINOPEC Chengdu 610041 China Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China

The Eastern Guangxi area locates in the southwestern part of the transition zone between Yangtze and Cathaysia blocks, which is an important region because the boundary between two blocks probablycrosses there. We determined LA-ICPMS U-Pb ages for detrital zircons extracted from three sandstone samples in the Sinian-Cambrian strata in this region. The resulting ages are in the range of the Archeozoic and Neoproterozoic, with three notable concentrates at 991 Ma, 974 Ma, and 964 Ma, all of which are coeval to the Grenvillian magmatic activity. The new age distribution is similar to the data reported in the Precambrian strata of the adjacent southwestern Cathaysia Block, suggesting that most of our detrital zircons are likely derived from the Cathaysia Block. Combined with others＇ research, we are more inclined to accept the opinion that there was not an ocean basin between the two blocks during the Sinian-Cambrian period in Eastern Guangxi area if the timing of collision is the Early Neoproterzoic. But if the timing of collision is the Early Paleozoic, we conclude that Luzhai uplift（i.e., the uplift between Guilin-Yongfu faultand Lipu fault） beyond the west of Dayaoshan regoin might be one part of southwestern sedimentation boundary of Cathaysia Block and Yangtze Block. We also get a few of detrital zircons with ages of ~590 Ma which probably sourced from northeastern Gondwana and 13 detrital zircons with over 3 000 Ma U-Pb ages which record the early formation of the earth.

关键词： Cathaysia Block Yangtze Block eastern Guangxi area detrital zircon U-Pb dating

Modelling of low-temperature exhumation rate in Dabie Mountain based on (U-Th)/He and fission-track thermochronological data

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Science China Earth Sciences 2006年第10期49卷 1009-1019页

作者： ding ruxin ZHOU Zuyi XU Changhai LIU Yuzhu CHENG Hao XU Fei State Key Laboratory of Marine Geology Tongji UniversityShanghai 200092China State Key Laboratory of Marine GeologyTongji UniversityShanghai 200092China State Key Laboratory of Marine GeologyTongji UniversityShanghai 200092China State Key Laboratory of Marine GeologyTongji UniversityShanghai 200092China State Key Laboratory of Marine GeologyTongji UniversityShanghai 200092China State Key Laboratory of Marine GeologyTongji UniversityShanghai 200092China

While the high-temperature exhumation process in the Dabie Mountain has been well documented, the low-temperature exhumation of this area since Cretaceous, especially since Late Cretaceous, is relatively less studied. Low-temperature thermochronology provides one of the important approaches to solve this problem. Based on the data of fission track and (U-Th)/He analysis of apaptites and zircons from the granitoid and metamorphic rocks in the Dabie Mountain, this paper applies Mancktelow’s and Braun’s methods to estimating the exhumation rates and to drawing the regional differential exhumation pattern since Cretaceous, especially since Late Cretaceous by taking into consideration factors such as heat transport, heat advection, topography and heat production, which could influence geothermal field in the shallow crust. Since Cretaceous, the exhumation rate (0.08-0.10 km/Ma) in the region around Tiantangzhai and in the south of Tanlu fault zone is larger than the rate (0.04-0.07 km/Ma) in other areas of the Dabie Mountain. The regional differential exhumation pattern might be related to the push-up effect caused by differential strike-slip movement along NNE-trending faults.

关键词： Dabie Mountain, fission track, (U-Th)/He, modelling, exhumation.

脂多糖诱导人和小鼠肠上皮细胞炎症并上调细胞甲基转移酶样蛋白3(METTL3)和METTL14表达

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细胞与分子免疫学杂志 2022年第4期38卷 308-315页

作者：丁汝昕李瑞凯刘俊丽张健韩继明延安大学医学院陕西延安716000 空军军医大学:西京医院消化外科陕西西安710032 空军军医大学:基础医学院生物化学与分子生物学教研室陕西西安710032

目的探讨N_(6)-甲基腺苷(m^(6)A)修饰在HIEC-6人肠上皮细胞与MODE-K小鼠肠上皮细胞炎性状态下的变化。方法采用不同剂量的脂多糖(LPS)、白细胞介素1β(IL-1β)、IL-6、肿瘤坏死因子α(TNF-α)刺激HIEC-6细胞与MODE-K细胞10 h或相同剂量... 详细信息

目的探讨N_(6)-甲基腺苷(m^(6)A)修饰在HIEC-6人肠上皮细胞与MODE-K小鼠肠上皮细胞炎性状态下的变化。方法采用不同剂量的脂多糖(LPS)、白细胞介素1β(IL-1β)、IL-6、肿瘤坏死因子α(TNF-α)刺激HIEC-6细胞与MODE-K细胞10 h或相同剂量LPS、IL-1β、IL-6、TNF-α分别刺激HIEC-6细胞与MODE-K细胞(0、3、6、12、24)h。实时定量PCR检测细胞炎性因子IL-1β、IL-6、TNF-α的mRNA表达;实时定量PCR和Western blot法分别检测m^(6)A修饰相关分子甲基转移酶样蛋白3(METTL3)、METTL14、METTL16、Wilms瘤1相关蛋白(WTAP)、烷基化修复同源蛋白5(ALKBH5)、脂肪量和肥胖相关蛋白(FTO)、YTH结构域蛋白1(YTHDC1)、YTHDC2的mRNA和蛋白表达。结果与对照组相比,HIEC-6细胞与MODE-K细胞在LPS诱导的时间依赖与剂量依赖模型中IL-1β、IL-6、TNF-α的mRNA表达水平增高,并同步上调METTL3和METTL14 mRNA与蛋白水平。结论LPS可以诱导肠上皮细胞出现炎症反应,并上调肠上皮细胞中METTL3和METTL14的表达。

关键词：炎症性肠病(IBD) N_(6)-甲基腺苷(m^(6)A) 甲基转移酶样蛋白3(METTL3) METTL14

大别—苏鲁造山带、华南晚中生代花岗岩时空分布及应力场对比

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地学前缘 2011年第1期18卷 9-14页

作者：丁汝鑫周祖翼中山大学地球科学系广东广州510275 广东省地质过程与矿产资源探查重点实验室广东广州510275 同济大学海洋地质国家重点实验室上海200092

花岗岩原地重熔学说为解释华南晚中生代(晚侏罗世—早白垩世)花岗岩时空分布的大地构造成因提供了一种新的视角。而通过对比可以发现,大别—苏鲁造山带及其以北附近区域(尤其是苏鲁造山带及其以北附近区域)与华南晚中生代花岗岩时空分... 详细信息

花岗岩原地重熔学说为解释华南晚中生代(晚侏罗世—早白垩世)花岗岩时空分布的大地构造成因提供了一种新的视角。而通过对比可以发现,大别—苏鲁造山带及其以北附近区域(尤其是苏鲁造山带及其以北附近区域)与华南晚中生代花岗岩时空分布规律及应力场具有高度的相似性和一致性,即花岗岩展布方向以北东向为主,从北西到南东方向由老变新;而且同时受古太平洋板块向欧亚大陆高速俯冲的应力场控制。因此基于该学说可以推出两者极有可能由同种原因形成,即由古太平洋板块对欧亚板块俯冲作用造成。由古太平洋板块俯冲所引发的板块联动效应导致华南板块与华北板块之间产生摩擦,进而使地壳温度升高,形成花岗岩浆层。随着板块俯冲速率的变化,花岗岩重熔界面位置也发生迁移,致使晚中生代花岗岩呈现自北西向南东变新的趋势(至少苏鲁造山带应该如此)。

关键词：大别—苏鲁造山带华南原地重熔学说