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Criteria for defining and recognizing the various orders of sequences in outcrop sequence stratigraphy

Science china Earth Sciences 2004年第7期47卷 618-629页

作者： WANG Xunlian Faculty of Earth Sciences and Mineral Resources, china university of Geosciences, Beijing 100083, china State Key laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of {4. and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, china 1. Faculty of Earth Sciences and Mineral Resources China University of Geosciences 100083 Beijing China 2. State Key laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences 210008 Nanjing China

The regional distribution in different depositional facies belts is here regarded as an important criterion for defining and recognizing the various orders of sequences. The third-order sequence is possibly global in nature, which may be discerned in different depositional facies belts in one continental margin and can be correlated over long distances, sometimes even worldwide. Commonly, correlation of subsequence (fourth-order sequence with time interval of 0.51.5 Ma) is difficult in different facies belts, although some of them may also be worldwide in distribution. A subsequence should be able to discern and correlate within at least one facies belt. The higher-order sequences, including microsequence (fifth-order sequence) and minisequence (sixth-order sequence), are regional or local in distribution. They may reflect the longer and shorter Milankovitch cycles respectively. Sequence and subsequence are usually recognizable in different facies belts, while microsequence and minisequence may be distinguished only in shallow marine deposits, but not in slope and basin facies deposits. A brief discussion is made on the essential conditions for correct identification of sequences, useful methods of study, and problems meriting special attention in outcrop sequence stratigraphy.

关键词： outcrop sequence stratigraphy, facies belt, sequence, subsequence, microsequence, minisequence, meter-scale cyclothem, Milankovitch cycle.

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模拟退火算法机理研究

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同济大学学报（自然科学版） 2004年第6期32卷 802-805页

作者：陈华根吴健生王家林陈冰同济大学海洋地质教育部重点实验室上海200092

从机理上分析了采用Metropolis概率接受准则的重要性 ,认为按照该准则可以使模型跳出局部极小值 ,避免了落入局部极小点的可能 ,然后在退火计划的控制下模拟退火算法 ,最终可以找到最优解 ;深入分析了算法的退火计划和模型扰动 ,以及两... 详细信息

从机理上分析了采用Metropolis概率接受准则的重要性 ,认为按照该准则可以使模型跳出局部极小值 ,避免了落入局部极小点的可能 ,然后在退火计划的控制下模拟退火算法 ,最终可以找到最优解 ;深入分析了算法的退火计划和模型扰动 ,以及两者之间的配合的技巧 ,认为算法本身可以作进一步的改进 ;并提出了改进的思路。

关键词：模拟退火算法效率最优退火计划

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Buoyancy leads to high productivity of the Changjiang diluted water:a note

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Acta Oceanologica Sinica 2008年第6期27卷 133-140页

作者： CHEN Chen-Tung Arthur Institute of marine geology and Chemistry National Sun Yat-sen University State Key laboratory of marine Environmental Science Xiamen University

Being the mightiest river emptying into the East china Sea （ECS） and the Pacific Ocean, compounded with the large increase of nitrogen and phosphorus input due to anthropogenic activities, the Changjiang River （Yangtze River） has become a dominating source of these nutrients to the estuary. The high nutrient concentrations notwithstanding, however, outside of the estuary the high biological productivity of the Changjiang diluted water （CDW） are most probably fueled mainly by nutrient-rich subsurface waters originating from the upwelled Kuroshio waters. This is because while the buoyancy of the CDW spreads it out on the ECS continen- tal shelf, the CDW entrains subsurface waters along with the nutrients. Nutrients thus supplied are several times more than those supplied by the Changjiang River.

关键词： Changjiang River Changjiang diluted water nutrients Three Gorges Dam productivity buoyancy

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同江地区中全新世以来的植被与环境研究

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同济大学学报（自然科学版） 2003年第6期31卷 668-671页

作者：张玉兰同济大学海洋地质教育部重点实验室华东师范大学河口海岸国家重点实验室上海200062

根据对黑龙江省同江县 96 QP剖面孢粉分析和14.C测年 ,从下至上可划分为 4.孢粉组合带 :Ⅰ带是以蒙古栎—桦属—蒿属—苔草属—禾本科—水龙骨科为主组合带 ;Ⅱ带是以蒿属—莎草科—禾本科—桦属—栎属为主组合带 ;Ⅲ带是以桦属—蒙... 详细信息

根据对黑龙江省同江县 96 QP剖面孢粉分析和14.C测年 ,从下至上可划分为 4.孢粉组合带 :Ⅰ带是以蒙古栎—桦属—蒿属—苔草属—禾本科—水龙骨科为主组合带 ;Ⅱ带是以蒿属—莎草科—禾本科—桦属—栎属为主组合带 ;Ⅲ带是以桦属—蒙古栎—松属—蒿属—莎草科—禾本科为主组合带 ;Ⅳ带是以松属—桦属—蒙古栎—蒿属—苔草属为主组合带 .这 4.孢粉组合带清楚地反映了古植被、古气候演替的 4.阶段 ,依次为 :①温性落叶阔叶林 ,②针、阔叶混交林—草原 ,③以落叶阔叶树稍多的针、阔叶混交林—草原 ,④以松占优势的针、阔叶混交林 .

关键词：植被孢粉组合同江地区泥炭全新世气候环境

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开敞型潮坪潮汐层偶形成和保存的若干问题

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同济大学学报（自然科学版） 2004年第4期32卷 466-470页

作者：赵娟范代读李从先同济大学海洋地质教育部重点实验室上海200092

简要综述了中国开敞型潮坪的分布与特征,总结了多年来在开敞型潮坪所做的野外观测结果,包括不同时间尺度沉降板观测分析潮汐层偶的生成和保存,插桩观测季节性潮滩冲淤和研究砂、泥质单层的形成与保存.结果表明,潮流和波浪侵蚀造成开敞... 详细信息

简要综述了中国开敞型潮坪的分布与特征,总结了多年来在开敞型潮坪所做的野外观测结果,包括不同时间尺度沉降板观测分析潮汐层偶的生成和保存,插桩观测季节性潮滩冲淤和研究砂、泥质单层的形成与保存.结果表明,潮流和波浪侵蚀造成开敞型潮坪潮汐纹层的保存率极低,连续性差.季节性强风浪和平静天气交替形成的小型层序,其中砂、泥质纹层厚度的变化与大小潮旋回所形成的沉积序列类似,但二者的成因不同,所代表的时间尺度差别较大.因此,在进行高分辨率古潮汐环境研究时需严格分析潮汐沉积的连续性.

关键词：开敞型潮坪潮汐沉积保存率古潮汐

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Ecological-sedimentary zonations and carbonate deposition,Xiaodonghai Reef Flat,Sanya,Hainan Island,china

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Science china Earth Sciences 2011年第3期54卷 359-371页

作者： WANG Yue1,2, SHEN JianWei1 & LONG JiangPing3 1 Department of marine geology, South china Sea Institute of Oceanology CAS Key laboratory of Marginal Sea geology, South china Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, china 2 Graduate university of Chinese Academy of Sciences, Beijing 10004., china 3 The Second Institution of Oceanography, State Oceanic Administration, Hangzhou 310012, china 1. Department of marine geology South China Sea Institute of Oceanology Guangzhou China2. Graduate University of Chinese Academy of Sciences Beijing 100049 China4. CAS Key Laboratory of Marginal Sea Geology South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China3. The Second Institution of Oceanography State Oceanic Administration Hangzhou 310012 China

Modern fringing reefs are developed on the intertidal to subtidal area of Xiaodonghai bay, Sanya, Hainan Island. The reef flat extends several dozen meters toward the sea. Various ecological and sedimentary zonations can be distinguished, including, from land to sea, beachrocks, large massive corals, inner reef flat, outer reef flat, and fore-reef slope. The carbonate sediments and constituent hermatypic coral communities are different in these zones. The beachrocks are composed mainly of biological sands, including coral skeletons, algae, gastropods, bivalves, and benthic foraminifera. Quartz sands are less common in this zone. Carbonate diagenesis in beachrocks is characterized by early cementation. The fringing reef flat is progradationally developed toward the sea. Large massive corals grew in the zone next to the beachrocks. These corals are large, flat-toped, and autochthonous in the production of bioclastic grains and lime mud. Large and massive coral skeletons are surrounded by coral skeletal grains, bioclasts, and lime-mud sediments. The inner reef flat consists mainly of skeletons of branching corals that are covered by bioclasts and lime mud, and living corals are mostly massive in form. Statistical analysis of coral-community dynamics shows that the outer reef flat with strong waves is the most suitable place for hermatypic corals to flourish. There, the living corals are most densely distributed. Both massive corals and branching corals (e.g., Acropora corymbosa) are exceptionally healthy in this zone. Bioclasts and lime mud are washed out due to strong wave action. Microbial carbonates generally are deposited within cavities of the beachrocks and coral skeletal cavities and on the surfaces of bioclastic grains. The latter two types, however, are more common. Ecological-sedimentary zonations across the Xiaodonghai reef flat from beachrocks to outer reef flat are controlled by variations in wave strength and water energy. Microbial carbonates rarely deve

关键词： microbial carbonates ecological-sedimentary zonation cementation reef flat Hainan Island

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Southeastern extension of the Red River fault zone (RRFZ) and its tectonic evolution significance in western South china Sea

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Science china Earth Sciences 2006年第8期49卷 839-850页

作者： LIU Baoming1,2,3, XIA Bin1, LI Xuxuan1,3, ZHANG Minqiang1,3, NIU Binhua2, ZHONG Lifeng1, JIN Qinghuan1,4.& JI Shaocheng1,5 1. Key laboratory of Marginal Sea geology and Resources, Chinese Academy of Sciences,Guangzhou 51064., china 2. china {4. of Geosciences (Beijing), Beijing 100083, china 3. Research Center of Science & Technology Department, CNOOC, Beijing 100027, china 4. Guangzhou marine Geological Survey, Ministry of Land & Resources, Guangzhou 510075, china 5. Ecole Polytechnique Montreal, H3C3A7, Canada 1. Key laboratory of Marginal Sea geology and Resources Chinese Academy of Sciences Guangzhou 510640 China 2. china university of Geosciences (Beijing) Beijing 100083 China 3. Research Center of Science & Technology Department CNOOC Beijing 100027 China 4. Guangzhou marine Geological Survey Ministry of Land & Resources Guangzhou 510075 China 5. Ecole Polytechnique Montreal H3C3A7 Canada

Recent geophysical surveys and basin modeling suggest that the No.1 fault in the Ying- gehai basin (YGHB) is the seaward elongation of the Red River fault zone (RRFZ) in the South china Sea (SCS). The RRFZ, which separates the South china and Indochina block, extends first along the Yuedong fault, offshore of Vietnam, and then continues southward and breaks off into two branches: the Lupar fault and the Tinjia fault. The southern extension of the Lupar fault dies out beneath the NW Borneo while the Tinjia fault extends southeast and reaches the Brunei-Sabah area. According to the gravity and geomagnetic data, and the tectonic evolution of the basins, there are different evolution histories between the Wan’an basin (WAB) and the basins in the Nansha block. The Tinjia fault may be the boundary between the Balingian block and the Nansha block. Hence, the line linking the Yue- dong fault and the Tinjia fault, which both are continental margin faults and strike-slip ones in the geological evolution histories, constitute the boundary between the Indochina and Nansha block. The Lupar fault, in contrast, is an intraplate fault within the Indochina block. The results provide new hints for reconstructing the tectonic evolution history of the RRFZ and the opening of the SCS, and also a framework for hydrocarbon prospecting in the region.

关键词： Red River fault zone, tectonic evolution, fault, extension, western South china Sea.

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Structural control of the Gagua “Wedge” Zone east of Taiwan Island on the southern Okinawa Trough

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Science china Earth Sciences 2005年第8期48卷 1165-1174页

作者： ZHENG Yanpeng1,2,3, LIU Baohua2,3, WU Jinlong2, LIANG Ruicai2,3, LIU Chenguang2,3 & ZHANG Zhengmin1 1. marine geology College, Ocean university of china, Qingdao 266003, china 2. First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, china 3. Key laboratory of marine Sedimentology and Environmental geology, State Oceanic Administration, Qingdao 266061, china 1. marine geology College Ocean University of China 266003 Qingdao China 2. First Institute of Oceanography State Oceanic Administration 266061 Qingdao China 3. Key laboratory of marine Sedimentology and Environmental geology State Oceanic Administration 266061 Qingdao China

Based on compositive analysis and interpretation of the observed and historical data, the geophysical field characters and structural properties of the Gagua “Wedge” Zone of the sea area east of Taiwan Island and the primary tectonic stress direction and its variabilities of backarc spreading in the southern Okinawa Trough are studied. It is concluded from the study results that the Gagua “Wedge” Zone is structurally consistent with the Gagua ridge and two fault basins on both sides of the Gagua ridge, and adjusts the moving direction and distance of the western Philippine Sea plate to make the northwestward motion of the plate on its east side change to the northward subduction of the plate on its west side so that the primary tectonic stress direction of the Okinawa Trough changed from NW-SE to nearly N-S, which provided the stress source for the Okinawa Trough to enter the second spreading stage.

关键词： east of Taiwan Island, Gagua "Wedge" Zone, Okinawa Trough, structural control.

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大地电磁场正演计算中几个问题的探讨

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同济大学学报（自然科学版） 2003年第7期31卷 828-832页

作者：欧阳联华王家林吴健生于鹏同济大学海洋地质教育部重点实验室上海200092

在有限元法中 ,插值函数、剖分密度以及电磁场在地表附近的垂向导数都是影响视电阻率计算精度的重要因素 .对此就三角形剖分线性插值和二次插值对视电阻率函数的计算精度进行了比较 ;讨论了不同的剖分密度对精度的影响 ;

关键词：大地电磁场正演插值函数剖分视电阻率

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霞浦No.1孔晚第四纪古气候因子的定量估算

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台湾海峡 1995年第1期14卷 32-39页

作者：陆继军同济大学海洋地质系上海200092

本文使用拖粉图式、最优分割、对应分析和Q型聚类分析方法，将福建霞浦No．1孔的孢粉划分为8个孢粉组合带，并由此推论出8个植被演替阶段。依据对应分析结果和一系列热力学计算公式，本文估算了该孢粉所反映的古气候因子。它们包括年平... 详细信息

本文使用拖粉图式、最优分割、对应分析和Q型聚类分析方法，将福建霞浦No．1孔的孢粉划分为8个孢粉组合带，并由此推论出8个植被演替阶段。依据对应分析结果和一系列热力学计算公式，本文估算了该孢粉所反映的古气候因子。它们包括年平均温度、相对湿度、绝对湿度、水汽压、年蒸发量、干燥度、年降水量。并依据这些古气候因子，认为该孔孢粉反映的该地区晚第四纪古气候有7个阶段。

关键词：岩心孢粉图式古气候定量估算晚第四纪

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