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Chronology of the stratum containing the skull of the Dali Man

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Chinese Science Bulletin 2002年第15期47卷 1302-1307页

作者： YIN Gongming ZHAO Hua YIN Jinhui lu yanchou Institute of Geology China Seismological BureauBeijing 100029China State Key Lab Loess&Quaternary Geology Chinese Academy of ScienceXi’an 710075China Institute of Hydrogeology and Environmental Geology CAGS

The field investigations of geomorphology and Quaternary sediment sequences show that the sediment stratigraphic profile containing the skull of the Homo sapiens Daliensis (Dali Man) at Tianshuigou trench, Jiefang Village (109°44’E, 34°52’N ), Dali County, Shaanxi Province, is composed of the loess-paleosol sequence, 17.3 m thick, in the upper part, and the alluvial silts, fine sands and sandy gravels interbedded, 15.4 m thick, in the lower part. There are the well developed layers L1, S1, L2 and S2 in the loess-paleosol sequence of the profile, which are comparable to those of the luochuan loess section on the basis of magnetic succeptibility measurements and IRSL dating of the loess samples. An alluvial gravel layer, where the skull of the Dali Man was discovered, is in 13 m beneath the bottom of paleosol S2, implying that, the age of the Dali Man must be older than about 247 kaBP when the paleosol S2 began to be developed. The samples of mammal animal tooth and shell fossils from the gravel layer

关键词： Dali Man stratigraphy chronology.

Fine grain IRSL and GLSL dating of late Quaternary sediments from North China

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Chinese Science Bulletin 2001年第4期46卷 334-337页

作者： ZHAO Hua lu yanchou CHEN Jie YING Gongming Institute of Earth Environment Chinese Academy of SciencesXi’an 710054China Insitute of Geology Seismological Bureau of ChinaBeijing 100029China

A possible approach to assess the fine grain OSL dating is discussed through comparison of equivalent dose (DE) values and ages obtained by IRSL and GLSL of fine grains for 31 sediment samples from North China. The IRSL and GLSL were measured with the same aliquots for each sample, i.e. shine-down was by 100 s of IRSL (880 nm) followed by 100 s of GLSL (514 nm) on the same discs. The DE values and ages found by IRSL are in good agreement with those by GLSL within 1-2σ for 80% samples, especially for aeolian loess samples. Considering that IRSL from feldspar differs obviously from GLSL dominated from quartz in dose response, thermal stability and optical bleaching characteristic, the agreement between the DE values may be taken as evidence that the two clocks of IRSL and GLSL had been well reset during deposition. The consistent ages of IRSL and GLSL, in turn, may be referred to an indicator to evaluate the fine grain OSL dating of sediments.

关键词： comparison of IRSL and GLSL dating fine grain Quaternary sediments North China.

The tectonic uplift of the Hua Shan in the Cenozoic

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Chinese Science Bulletin 2001年第19期46卷 1665-1668页

作者： YIN Gongming lu yanchou ZHAO Hua LI Wanlun LI Li QUO Shilun Institute of Geology China Seismological BureauBeijing 100029China State Key Lab Loess&Quaternary Geology Chinese Academy of SciencesXi’an 710054China China Institute of Atomic Energy Beijing 102413China

Six granite samples were collected from six difference elevation locations at the Hua Shan in a main ridge of the Qinling Mountain. Apatite and zircon separated from these six samples were dated by the fission track technique. An assessment of the Cenozoic uplift or exhumation rate was obtained from the altitude difference of sampling samples dated by fission track, and from the difference of fission track dates of both apatite and zircon for a sample. The preliminary results suggest that the beginning of uplift of the Hua Shan was as early as 68.2 MaBP and the uplift rates for different periods are 0.02-0.19 mm/a (from the elevation difference) or 0.12-0.16 mm/a (from two mineral fission track dates). The average uplift rate is 0.12 mm/a (from the elevation difference) or 0.14 mm/a (from two mineral fission track dates). The uplift of the Hua Shan might accelerate since (17.8±2.0) MaBP, and the average uplift rate is about 0.19 mm/a.

关键词： Hua Shan Cenozoic uplift fission track dates of apatite and zircon.

Thickness of calcium carbonate coats on stones of the Heishanxia terraces of the Yellow River and dating of coarse clastic sedimentary geomorphic surfaces

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Chinese Science Bulletin 2002年第19期47卷 1594-1600页

作者： Chengqi Xing Gongming Yin Guoyu Ding yanchou lu Xuhui Shen Qinjian Tian Zhizhang Chai Kaibo Wei Beijing Seismological Bureau Beijing China Institute of Geology China Seismological Bureau Beijing China Center for Analysis and Prediction China Seismological Bureau Beijing China Seismological Bureau of Ningxia Hui Autonomous Region Yinchuan China

The calcium carbonate coats on stones developed in soil on the geomorphic surfaces of coarse clastic sediments in arid-semiarid regions contain evident information of age. The thickness of coats can be used not only as a good age indicator for the geomorphic surfaces but also coats themselves can be directly used as dating materials in the ESR method. Through measuring the thickness of carbonate coats on stones in soils on the alluvial terraces in the mouth of the Heishanxia gorge of the Yellow River and ESR dating of layers separated from the carbonate coats, the average of accumulation rates of the thickness of carbonate coats on stones since 1.57 Ma was calculated to be 0.10 mm/ka in the studied area, and a regression equation between carbonate coat thickness and age was also generated. From these research results, ages of T2-T11 terraces of the Yellow River in the studied area were systematically determined, and their values are in turn 18 ka, 94 ka, 139 ka, 215 ka, 305 ka, 410 ka, 495 ka, 742 ka,

关键词： dating method of carbonate coats on stones soil devel-opment Yellow River terraces geomorphic surfaces Heishanxia gorge.

科尔沁沙地全新世风沙沉积物的石英单测片蓝光释光测年和风沙活动年代学

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核技术 2005年第5期28卷 367-374页

作者：赵华卢演俦尹金辉中国地质科学院水文地质环境地质研究所石家庄050061 中国地震局地质研究所

通过科尔沁沙地内部甘旗卡固定一半固定沙丘地带五个处于不同微地貌的全新世古风沙沉积地层剖面的观测和取样,对25个沙丘砂、古土壤和相关沼泽沉积物样品采用粗颗粒石英单测片蓝光释光测年技术和程序进行沉积年龄测定,并对5个沼泽沉积... 详细信息

通过科尔沁沙地内部甘旗卡固定一半固定沙丘地带五个处于不同微地貌的全新世古风沙沉积地层剖面的观测和取样,对25个沙丘砂、古土壤和相关沼泽沉积物样品采用粗颗粒石英单测片蓝光释光测年技术和程序进行沉积年龄测定,并对5个沼泽沉积物和古土壤样品进行有机碳14C年龄测定。在此基础上提出了研究区全新世沙丘活动的年代学框架,即在10-7.5 ka B.P期间沙丘由活动转为固定;约7.5 kaB.P至约(2.0±0.2)ka B.P.期间沙丘广泛发育草原或疏林草原土壤;从约(2.0±0.2)ka B.P以来沙丘又重新进入活动或半活动状态, 并主要取决于人类活动的影响。

关键词：科尔沁沙地全新世风沙沉积物石英单测片释光测年

沂沭断裂带大水场剖面断层泥的ESR年代学研究

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地震地质 1999年第4期21卷 346-350页

作者：孙瑛杰卢演俦尹功明中国地震局地质研究所北京100029

对山东省沂水县大水场断层剖面的断层泥带进行了野外观测和ESR 测年。断层泥的ESR年龄与由其穿插关系等判断出的断层活动次序相符。各断层泥的ESR 年龄显示出大水场断层经历了两个活动较频繁的时段,即0-25～0-28Ma B-P- 和0-45～0-55Ma ... 详细信息

对山东省沂水县大水场断层剖面的断层泥带进行了野外观测和ESR 测年。断层泥的ESR年龄与由其穿插关系等判断出的断层活动次序相符。各断层泥的ESR 年龄显示出大水场断层经历了两个活动较频繁的时段,即0-25～0-28Ma B-P- 和0-45～0-55Ma B.P.。

关键词：断层泥地质年代学断层活动 ESR年代学

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黄土细颗粒单测片再生法光释光测年的进展

核技术 2005年第5期28卷 383-387页

作者：王旭龙卢演俦李晓妮中国科学院地球环境研究所黄土与第四纪地质国家重点实验室

报道了黄土细颗粒石英与混合矿物单测片再生法测年中的若干进展。在黄土细颗粒释光测年前处理方面,利用氟硅酸溶蚀法提取可供释光测年的细颗粒石英,突出溶蚀过程需用超声波克服细颗粒矿物表面能的重要性;在此基础上,利用单测片再生法测... 详细信息

报道了黄土细颗粒石英与混合矿物单测片再生法测年中的若干进展。在黄土细颗粒释光测年前处理方面,利用氟硅酸溶蚀法提取可供释光测年的细颗粒石英,突出溶蚀过程需用超声波克服细颗粒矿物表面能的重要性;在此基础上,利用单测片再生法测定洛川黄土细颗粒石英光释光等效剂量,作为标准评估混合矿物红外-蓝光联合激发单测片再生测定等效剂量的可靠性。通过线性激发技术证实了长时间红外激发后蓝光释光信号和细颗粒石英光释光信号中快速和中速信号组份之间存在着相似的特征,提出红外后蓝光释光测年需进行红外激发时间与红外后蓝光释光等效剂量坪实验,以获得蓝光激发前红外激发参数。通过与细颗粒石英等效剂量的对比,系统地研究了细颗粒混合矿物单测片再生法确定的红外与红外后蓝光释光等效剂量的可靠性。

关键词：细颗粒黄土红外释光红外后蓝光释光单测片技术

黄土细颗粒混合矿物红外释光和红外后蓝光释光的环境意义

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核技术 2009年第2期32卷 87-91页

作者：康树刚卢演俦王旭龙中国科学院地球环境研究所黄土与第四纪地质国家重点实验室西安710075 中国地震局地质研究所地震动力学国家重点实验室北京100029 中国科学院研究生院北京100049

本研究目的在于揭示黄土细颗粒混合矿物红外释光(IRSL)和红外后蓝光释光([post-IR]OSL)再生剂量信号强度与环境变化之间的可能联系。在相同的测试条件下,洛川末次间冰期以来黄土-古土壤序列细颗粒混合矿物的再生剂量感量变化校正后红外... 详细信息

本研究目的在于揭示黄土细颗粒混合矿物红外释光(IRSL)和红外后蓝光释光([post-IR]OSL)再生剂量信号强度与环境变化之间的可能联系。在相同的测试条件下,洛川末次间冰期以来黄土-古土壤序列细颗粒混合矿物的再生剂量感量变化校正后红外释光(IRSL)和红外后蓝光释光([post-IR]OSL)信号强度随地层的变化及其与磁化率的良好对应关系,显示了这两种释光信号强度与环境变化的可能联系;另外,黄土高原自西北(NW)-东南(SE)方向四个剖面马兰黄土(L1)上部样品再生剂量IRSL和[post-IR]OSL信号强度趋于逐渐增强表明,两个释光信号强度随气候由冷干向暖湿过渡而呈现逐渐增大的趋势,进一步证实了它们与环境变化之间的联系。IRSL信号强度的变化可能与混合矿物中长石种类或含量有关,而[post-IR]OSL强度变化可能受控于长石矿物对该信号的贡献量。两个信号可以间接反映环境变化的信息。实验结果同时也表明应当慎重使用细颗粒混合矿物[post-IR]OSL信号测年。

关键词：红外释光红外后蓝光释光黄土古土壤混合矿物环境变化

A CLIMATOSTRATIGRAPHIC SUBDIVISION OF LATE PLEISTOCENE STRATA NAMED BY MALAN FORMATION IN NORTH CHINA

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Chinese Science Bulletin 1984年第9期29卷 1239-1242页

作者：安芷生卢演俦 Institute of Geochemistry Academia Sinica Guiyang Institute of Geology National Bureau of Seismology Beijing

Since Teilhard de Chardin and C. C. Young identified the Late Pleisocene loess which is distributed widely in Malan Formation of North China, it has become one of the marker beds of the Late Pleistocene.

关键词： loess Pleistocene strata marker magnetometer sedimentary thick subdivided manganese Plateau