科技部補助專題研究計畫成果報告
期末報告
利用非傳統穩定同位素探討前寒武紀/寒武紀過渡期之古環境變
化(II)
計 畫 類 別 ： 個別型計畫 計 畫 編 號 ： MOST 107-2116-M-006-005-執 行 期 間 ： 107年08月01日至108年07月31日 執 行 單 位 ： 國立成功大學地球科學系（所） 計 畫 主 持 人 ： 游鎮烽 計畫參與人員： 學士級-專任助理：程安琪 大專生-兼任助理：陳瑋晨 博士班研究生-兼任助理：林彥伯 博士後研究-博士後研究：劉厚均 報 告 附 件 ： 出席國際學術會議心得報告中 華 民 國 108 年 10 月 30 日
中 文 摘 要 ： 地球歷史與生命演化有著緊密的關聯性。地表環境變遷將導致適合 者生存，而較不適者逐漸消亡；同時較具生陳代謝/生物化學優勢能 力族群，例如氧氣來源的光合作用，可顯著改變海洋或大氣組成和 地表風化。遠古宙至早顯生宙地層，介於埃迪卡拉和寒武紀黑色頁 岩層過渡帶，記錄著雪球地球時期劇烈氣候、環境變化和生物演化 的資訊。為研究相關地層，我們已組成多專長國際研究團隊(中、台 、蘇和美)，進行合作研究，預期可產生整合資料，提供關於埃迪卡 拉雪球地球和早期生命快速分異演化的相關過程。 根據SEM初步評估，已經發現數種適合使用於U-Pb定年礦物，並利用 雷射剝蝕及SIMS進行初步鋯石或磷釔礦定年，結果證實碎屑礦物對 定年結果有關鍵影響。另外，將逐步應用多重同位素系統於重建古 環境指標研究；諸如：硼（pH）、硫（生地化循環）、鉬/釩或鈾同 位素（還原狀態）、鍶、鈣和鎂（陸源及風化）、和碳、氮、氧 （碳源及生物循環）；如有適當磷灰石存在，其結構中REE-取代鈣 程度，將可紀錄環境的相對氧氣濃度，配合pH代用指標測量，將可 估算遠古宙海洋酸度狀況。本計畫擬重建藍田/甕安雪球地球的海洋 環境變遷紀錄，並還原其所含有微體化石在被礦化作用前形貌特性 。此計畫為延續性計畫(II)， 106年度9月中旬我們參與了「寒武紀 /前寒武紀過渡帶(II)」國際團隊於中國科技大學舉辦的聯合會 (II)，會後前往貴州省貴陽和甕安等地野外勘查，參觀與過渡帶相 關磷礦場，並獲得珍貴含磷岩石標本，供後續薄片切割、製造、顯 微鏡觀察、雷射剝蝕、SEM或TEM照相或化學成分和多種同位素比值 等分析使用；小部分篩選標本目前已利用日本東京大學或中研院地 科所NanoSIMS，針對磷灰石及微量磷釔礦或獨居石和鋯石進行微區 U-Pb定年，初步獲得年代資料顯示詳細微區觀測是為礦物標地定年 的重要前置工作，107年度將利用雷射剝蝕電漿質譜儀針對微區礦物 中硫同位素、REEs及微量元素等分部狀況進行精確測量，以期正確 解開寒武紀/前寒武紀過渡帶的海洋環境的變化及伴隨生命演化的歷 程。 中 文 關 鍵 詞 ： 雪球地球,海洋酸化,藍田/甕安微化石區,同位素
英 文 摘 要 ： Our preliminary SEM studies have documented the occurrence of numerous minerals suitable for U-Pb dating. Initial results using Electron Probe and LA-ICPMS analyses have also identified secondarily emplaced detrital minerals (e.g., zircon) that on the bases of their morphology and/or chemistry can now be excluded from our micro-mineral age determinations. On the other hand, our studies will also focus on environmental proxies, including B isotopes (for oceanic pH); S isotopes(for biogeochemical cycling); Mo, V and U isotopes (for redox and oxygenation conditions); other Sr, Ca and Mg isotopes (for continental weathering); and stable C, N and O isotopes (for carbon sources and productivity). Where present, REE-substituted apatite will document relative oxygen concentrations in the aqueous environment and δ11B pH proxy will provide needed data to estimate Neoproterozoic ocean acidity.
This project aims to reconstruct marine environmental changes recorded in Lantian and Weng’an strata on the Snowball Earth and to characterize in detail the
permineralized microscopic fossils they contain. Our
international team will use state-of-the art techniques to provide new telling data about the evolution of life and the environment on the Snowball Earth.
This is a continuous study of "Precambrian/Cambrian
Transition Project” to examine in details of the chemical and isotopic variations recorded in the phosphorite
specimens collected from the Doushantuo Formation in Guiyang, China. We attended “the Precambrian/Cambrian Transition workshop (II)” held at USTC in mid-September, 2017. After the workshop, we conducted a field work to visit some of the phosphorite mines in Guiyang and have obtained specimens for optical thin sections, LA-ICPMS rock slabs and further SEM & TEM thin sections, as well as
powders for wet chemistry on various isotopic and trace elements analyses. A few selected specimens of apatite, xenotime, monazite and zircon grains have been tried to date using NanoSIMS facilities at Tokyo University and IESAS during the second half-year in 2017. The obtained ages are interesting, but emphasizing the importance of sediment diagenetic processes after these minerals buried. These processes can be evaluated using the REEs
distribution pattern or other sensitive tracers. In this coming fiscal year, we will apply the available state-of-the-art techniques to gain a better understanding of S isotopes, REEs and other sensitive trace elements migration across the Precambrian/Cambrian transition boundary.
英 文 關 鍵 詞 ： Snowball Earth, Ocean acidification, Lantian/Weng’an micro-fossils, isotopes
科技部補助專題研究計畫成果報告
（□期中進度報告/■期末報告）
利用非傳統穩定同位素探討前寒武紀/寒武紀過渡期之古環境變化
(II)
計畫類別：■個別型計畫 □整合型計畫
計畫編號：MOST 107－2611－M－006－005－
執行期間：107 年 8 月 1 日至 108 年 7 月 31 日
執行機構及系所：國立成功大學地球科學系
計畫主持人：游鎮烽
計畫參與人員：博士後研究員：劉厚均
學士級-專任助理：程安琪
博士班-兼任助理：林彥伯
學士班-兼任助理：陳瑋晨
本計畫除繳交成果報告外，另含下列出國報告，共 1 份：
□執行國際合作與移地研究心得報告
■出席國際學術會議心得報告
□出國參訪及考察心得報告
中 華 民 國 年 月 日
附件一一、 Abstract
Earth's history and the evolution of life are closely interconnected.Changes in the ambient environment lead to selection of organisms best able to cope with the new settings and a winnowing out of the less adapted. At the same time, the advent of new metabolic/ biochemical capabilities –the origin of oxygenic photosynthesis, for example –have greatly influenced the composition of the atmosphere and oceans and the weathering of the land surface. We have established an international-team, including scientists (China, Taiwan, Russia and USA) to tackle various issues in Precambrian/Cambrian transition period. And have been assigned by this
international group to focus on developing proper U-Pb dating technique for apatite grains or other authigenic minerals, as well as examine other redox sensitive isotopes in the Neoproterozoic Doushantuo and Lantian Formation, South China.
Our preliminary SEM studies have documented the occurrence of numerous minerals suitable for U-Pb dating. Initial results using Electron Probe and LA-ICPMS analyses have also identified secondarily emplaced detrital minerals (e.g., zircon) that on the bases of their morphology and/or chemistry can’t be excluded from our
micro-mineral age determinations. On the other hand, our studies also focus on other environmental proxies, including B isotopes (for oceanic pH); S isotopes (for
biogeochemical cycling); Mo, V and U isotopes (for redox and oxygenation
conditions); other Sr, Ca and Mg isotopes (for continental weathering); and stable C, N and O isotopes (for carbon sources and productivity). Where REE-substituted
apatite will document relative oxygen concentrations in the aqueous environment and δ11B pH proxy will provide needed data to estimate Neoproterozoic ocean acidity. This project aims to reconstruct marine environmental changes recorded in Lantian and Weng’an strata on the Snowball Earth and to characterize in detail the permineralized microscopic fossils contained. Our international team will use
state-of-the art techniques to provide new telling data about the evolution of life and the environment on the Snowball Earth. This is a continuous study of
"Precambrian/Cambrian Transition Project” to examine in details of the chemical and isotopic variations recorded in the phosphorite specimens collected from the
Doushantuo Formation in Guiyang, China. We attended “the Precambrian/Cambrian Transition workshop (II)” held at USTC in mid-September, 2017. After the workshop, we conducted a field work to visit some of the phosphorite mines in Guiyang and have obtained specimens for optical thin sections, LA-ICPMS rock slabs and further SEM & TEM thin sections, as well as powders for wet chemistry on various isotopic and trace elements analyses. A few selected specimens of apatite, xenotime,
monazite and zircon grains have been dated by NanoSIMS facilities at Tokyo University or IESAS. The obtained ages are interesting, but emphasizing the importance of sediment diagenetic processes after these minerals buried. These processes can be evaluated using the REEs distribution pattern or other sensitive tracers. In this fiscal year, we apply the available state-of-the-art techniques to gain a better understanding of S isotopes, REEs and other sensitive trace elements migration
across the Precambrian/Cambrian transition boundary.
二、 Introduction
Sedimentary rocks record wealth of information on the evolution of lithosphere, hydrosphere, atmosphere and biosphere. However, uncertainty about the age of many Precambrian sequences makes it very difficult to establish the accurate temporal framework which can dramatically improve our understanding of the scale and duration of geological and biological events. The ages of sedimentary formations especially in the Phanerozoic period are conventionally estimated from chemo- or
biostratigraphy correlation. In older rocks, the age determination using this method become inapplicable due to the absent of fossil records. Some indirect methods, such as dating of
contemporaneous volcanic rocks, bracketing relationships of igneous and metamorphic rocks, and the dating of detrital and diagenetic minerals (Rasmussen 2005), can be used to constrain the age of sedimentary rocks. But many basins lack suitable volcanic rocks and sometimes the range of constrained ages can be up to hundreds of millions of years. Dating detrital minerals shows very limited information about the depositional age since it can only yield maximum ages. Most diagenetic minerals form in low temperature environment and have low closure temperature, making them prone to later thermal resetting, therefore are not suitable for geochronology. A recent development in sedimentary geochronology has been the identification of the U–Pb chronometer, xenotime, as a diagenetic phase in sedimentary rocks (Rasmussen 1996; Rasmussen et al. 1998). Using SIMS with 5–10 μm spatial resolution, it is now possible to date xenotime, yielding precise dates that in some instances approximate the age of deposition (McNaughton et al. 1999; Vallini et al. 2002; Rasmussen et al. 2004). Being a common U-bearing accessory mineral in sedimentary rocks, U–Pb and dating of apatite has potential application in sedimentary provenance studies. Apatite has been widely used in thermochronology studies (Chew & Spikings 2015). The high closure temperature of ca. 450-550 °C (Chamberlain & Bowring 2001; Schoene & Bowring 2007) makes U-Pb apatite system a useful tool to study the deposition ages of sedimentary or low-grade meta-sedimentary rocks. Apatite is also a relatively common diagenetic mineral, and is the main phase in phosphorite deposits where it occurs as cryptocrystalline aggregates (Follmi 1996)
.
The uranium and lead isotope of apatite has been measured by isotope dilution mass spectrometry (Oosthuyzen & Burger 1973; Romer 1996; Corfu & Stone 1998), ion microprobe (Li et al. 2012; Sano, Oyama, et al. 1999; Sano, Terada, et al. 1999) and laser ablation-inductively coupled plasma-mass spectrometry (Thomson et al. 2012; Willigers et al. 2002). The primary limitation of U-Pb apatite geochronology is poor dating precision cause by low U concentration and high common lead content.The Ediacaran marks the final geological period of the Proterozoic eon between the termination of the global Marinoan glaciation at ∼635 Ma and the beginning of the Cambrian at 542 Ma. The Ediacaran Earth experienced major biological changes, including radiation of complex multicellular life such as globally distributed Ediacaran-typesoft-bodied animals. The Neoproterozoic Doushantuo and Lantian Formation, South China, preserve unique assemblages of early multicellular fossils and overlies rocks, which are thought to have formed during an ice age of global extent. The age of these formations are thus critical for understanding the important biological and climatic events that occurred towards the end of the Proterozoic Eon.
三、 Literature and discussion
The Doushantuo Formation is a recently discovered lagerstätte in Guizhou Province, China that is most notable for its scientific contributions in the hunt for Precambrian life. Doushantuo is of
particular interest because its fossils, dating from about 565 to 590 million years ago, predate the Cambrian Explosion by at least 20 million years. The most fossiliferous zones are estimated to be 570 million years old. The Doushantuo Formation is represented by a phosphate- dolostone sequence at Weng'an, where it is 33 to 55 m thick and consists mainly of dark phosphate, cherty phosphate, chert, and gray dolomite. The overlying Dengying Formation, of Ediacaran (~565 Ma to 544 Ma) age and containing rare Ediacaran body fossils in the lower part and basal Cambrian shelly fossils near the top, is a 180 m thick dolomite sequence. The Doushantuo Formation is further divided into 4 Members in ascending order: Member 1 (cap carbonate), Member 2 (an alternating shale-mudstone-dolostone sequence), Member 3 (dolostone- and limestonedominated), Member 4 (also called the Miaohe
Member black shale)(Wang et al. 1998; Zhu et al. 2003; Sawaki et al. 2010). The Lantian formation is a 150-meter-thick sequence of rocks deposited in southern China during a 90-million-year epoch in the Ediacaran period. Its algal macrofossils (which have alternatively been interpreted as putative
metazoans are the oldest large and complex fossils known (Yuan et al. 2011). The rocks were deposited in shallow seas, in the photic zone yet below storm wave base yet were deposited in
predominantly anoxic conditions. The Lantian Formation is divided into four members that are similar to and can be correlated with the four divisions of the Doushantuo Formation(McFadden et al. 2009). The lowest Member I is a 1.8-m-thick dolostone conformably overlying a Marinoan-age glacial diamictite. The overlying Member II consists of 35 m of finely laminated fossiliferous black shales. Member III is 34 m thick and characterized by dolostones interbedded with mudstones in the lower part and ribbon rocks in the upper part. The uppermost Member IV consists of 20 m of black silty mudstones, which is overlain by siliceous rocks of the Piyuancun Formation and then the early Cambrian Hetang Formation (Yuan et al. 2002). The stratigraphic relations of Doushantuo Formation and Lantian Formation are shown in Fig 1.
四、 Methodology
Precise zircon U–Pb dating of volcanic tuff beds from the lower and uppermost Doushantuo Formation has constrained the age of the Doushantuo Formation to between 635.2±0.6 and 551.1±0.7 Ma(Condon et al. 2005). The Re–Os age for the base of Doushantuo Member 4 has been determined to be 591.1±5.3 Ma (Zhu et al. 2013). Dating of Doushantuo phosphorites by a Lu-Hf dating method and Pb-Pb geochronometry independently yield ages of 584±26 Ma and 599.3±4.2 Ma, respectively (Barfod et al. 2002). Pb isotopic composition analysis of Doushantuo black shales yield a Pb isotope isochron ages of 572±36Ma (Chen et al. 2009). No radiometric ages are available to directly constrain the depositional age of the Lantian Formation. However, lithostratigraphic and chemostratigraphic correlation between the Lantian Formation and the Doushantuo Formation in the Yangtze Gorges area (Zhou & Xiao 2007; Zhu et al. 2007; Wang et al. 2014) indicates that the fossiliferous Member II is between 635 Ma and 576 Ma(Yuan et al. 2011).
The feasibility of the radiometric dating methods for diagenesis were established with Ar-Ar age of glauconies (Smith et al. 1993), Rb-Sr age of illite (Morton 1985), K-Ar age of diagenetic K-feldspar (Girard et al. 1988), Pb-Pb age of monazite nodules (Evans et al. 2002) and U-Pb age of apatite
(Chandler &Parrish 1989). A recent development in sedimentary geochronology has been the identification of the U–Pb chronometer, xenotime, as a diagenetic phase in sedimentary rocks (Fletcher et al. 2000; Rasmussen et al. 2004; Rasmussen 2005). A variety of methods are currently available for U-Pb geochronology of diagenetic minerals. Three main techniques used are TIMS, SIMS and MC-ICPMS. Using an ion microprobe (Sano, Oyama, et al. 1999) or LA-ICPMS (Willigers et al. 2002; Chew et al. 2011) , it is possible to date xenotime and apatite with a spatial resolution of 5-30μm. Isotope dilution TIMS involves the chemical digestion of entire crystals and is more precise than in situ methods. However, heterogeneity and small sizes which are typical characteristics of diagenetic minerals make the microprobe techniques more appropriate. Under ideal conditions, the LA-ICPMS can yield U–Pb ages that approach the accuracy and precision delivered by SIMS in a fraction of the time with the cost of much larger sample consumption. Analysis by ion microprobe is the primary method used in this study because of the fine spatial resolution, shallow penetration depth and high precision. In situ dating using high spatial resolution SIMS is a powerful technique to acquire valuable ages information from apatite or xenotime. In SIMS analysis, a primary ion beam of O- or O2- bombard the sample, sputtering the surface of specimen and analyzing ejected secondary ions. The generated secondary ions are focused and transferred to mass spectrometer, filtered according to their energy distributions, separated by mass to charge ratios and detected using low noise ion counter. Precision and accuracy in SIMS U-Pb geochronology strongly depend on the method of determination of the inter-element ion ratios from the measured secondary ion ratios (Jeon & Whitehouse 2015). Therefore, a well-characterized matrix-matched standard to correct for elemental fractionation is crucial. Also, the low U contents of apatite which limited production of radiogenic Pb may hinder the attempts to apply in situ SIMS U-Pb technique. The intensity of 204Pb needs to be accurately measured to ensure robust common lead correction.
The preliminary NanoSIMS studies of apatite, xenotime, monazite and zircon grains emphasize the importance of careful examination of each target grain to avoid mis-interpreting the micro-fossils or minerals events in the ancient past ocean. These results enable us to set targets for the coming fiscal year and to do further in situ REEs and S isotopic determination using our LA_ICPMS for evaluation of potential artifacts in geological specimens prior to chronological dating. We have finishing
preliminary field sampling trip to Hefei, Anhui and Weng’an, Guiyang;, Finishing preliminary Nano-SIMS U-Pb dating works for minor minerals of zircon, apatite, monazite and xenotime
recovered from Neoproterozoic Doushantuo and Lantian Formation, working together with The Tokyo university Nano-SIMS facility; Finishing making 32 petro-graphical thin sections, 32 rock slabs for LA-ICPMS, 32 thin sections for SEM and TEM observations; Preparing and pulverizing rock chips for powering, will be use for wet chemical and isotopic analyses; Finishing the second workshop at USTC with the international“Cambrian/ Precambrian transition zones”working group colleagues; Test runs of available U and Sr standards in the lab for various U and Sr isotopic ratios at NCKU. Obtaining some interesting ages on apatite grains, suggesting critical influence of hydrothermal events around 302Ma;
2019 CH Chung, CF You, JW Schopf, N Takahata and Y Sano (2019) NanoSIMS U-Pb dating of
fossil-associated apatite crystals from Ediacaran (~570 Ma) Doushantuo Formation (Revised to PR, 3.834, Geosciences, Multidisciplinary, 32/195
2019 YH Liu, DC Lee, CF You, N Takahata, Y Sano and CM Chou (2019) In-situ U-Pb dating of monazite, xenotime, and zircon from the Lantian black shales: time constraints on provenances, deposition, and fluid flow events (Revised to PR, 3.834, Geosciences, Multidisciplinary, 32/195)
Other publications:
2018 K. J. Meyer, A. E. Carey, C.F. You (2017) Typhoon impacts on chemical weathering source provenance of a high standing island watershed, Taiwan, Geochimica et Cosmochimica Acta 215, 404-420. (SCI, IF 4.61, 5/83) in GEOCHEMISTRY & GEOPHYSICS).
2018 H.C. Liu and C.F. You* (2018) Geochemical speciation and risk assessment of heavy metals in Taiwan coastal sediments. Sediment Watch: Monitoring, Ecological Risk Assessment and Environmental Management (ISBN: 978-1-53613-856-6). New York, USA: NOVA Science Publishers. May, 2018: 227-250.
2018 C.H. Chung , C.F.You* and C.S. Horng (2018) Nd isotopic signature in sedimentary Mn/Fe oxides: tracer of Kuroshio Current variation in the last 27ka. Sediment Watch: Monitoring, Ecological Risk Assessment and Environmental Management (ISBN: 978-1-53613-856-6). New York, USA: NOVA Science Publishers. May.
2018 Y.P. Lin, Y.C. Chen, C.F You*, HC Liu, CH Chung and TH Wang (2018) Isotopic compositions of Pb in river water and sediments in the Erren River, SW Taiwan Sediment Watch: Monitoring,
Ecological Risk Assessment and Environmental Management (ISBN: 978-1-53613-856-6). New York, USA: NOVA Science Publishers. May.
2018 Chee Kong Yap*, Hisham Isak,Wan Hee Cheng, Koe Wei Wong, Hishamuddin Omar, Rosimah Nulit, Shamarina Shohaimi, Moslem Sharifinia, Chen-Feng You, Feng Ye, Alireza Riyahi Bakhtiari and Salman Abdo Al-Sham (2018) Ecological risk assessment of heavy metals in polluted drainage sediments from Malacca Industrial Area and Malacca River, Malaysia. Sediment Watch: Monitoring, Ecological Risk Assessment and Environmental Management (ISBN: 978-1-53613-856-6). New York, USA: NOVA Science Publishers. May.
2018 Laifeng Li, Jun Chen, Tianyu Chen, Yang Chen, David William Hedding, Gen Li, Le Li, Tao Li, Laura F. Robinson, A. Joshua West, Weihua Wu, Chen-Feng You, Liang Zhao, Gaojun Li(2018) Weathering dynamics reflected by the response of riverine uranium isotope disequilibrium to changes in denudation rate, Earth and Planetary Science LettersVolume 500, 136-144.
2019 Ju-Lien Pi, Chen-Feng You*, Huai-Jen Yang and Chorng-Shern Horng (2019) The B isotopic
behavior in metapelite during low-grade metamorphism: observations in the Central Range, Taiwan, Chemical Geology 520, 1–10
2019 S. K. Aggarwal, T.H. Wang, C.F. You and C.H. Chung (2017) Experimental evaluation and minimization of memory effect in isotope ratio determination of boron with high resolution multi-collector inductively coupled plasma source mass spectrometry (MC-ICPMS) (submitted to AC)
2019 C.Y. Chen, S.K. Aggarwal, CH Chung and C.F. You* (2020) Advanced Mass Spectrometry for Beverage Safety and Forensics, Chapter 7, 223-268. Emerging trends and developments in beverage
science, Volume 18, Edited by Alexandru Grumezescu and Alina Maria Holban (the “Editor”), published by Elsevier Inc. (the “Publisher”), Elsevier publisher.
2019 Fei Zhang, Zhangdong Jin, A. Joshua West, Zhisheng An, Robert G. Hilton, Jin Wang, Gen Li, Alexander L. Densmore, Jimin Yu, Xiaoke Qiang, Youbin Sun, Liangbo Li, Longfei Gou, Yang Xu, Xinwen Xu, Xingxing Liu, Yanhui Pan & Chen-Feng You (2019) Monsoonal control on a delayed sedimentation response to the 2008 Wenchuan earthquake, Science Advances 5:eaav 7110 (June 2019, IF 12.80, Multidisciplinary Sciences, 4/69)
2019 Yao-Jen Tu, Chen-Feng You; Sheng-Chung Lo; Ting-Shan Chan (2019) Enhanced Recovery of Neodymium from Actual Waters Using Surface Functionalized Ferrite Environmental Technique 40:12, 1592-1604(Environmental Sciences, 144/242).
2019 Yi Liu, Shicheng Tao, Kefu Yu, Chen-Feng You, Tzu-Hao Wang, Qi Shi, ZhengguoShi, Huiling Zhang, Tegu Chen, Jianxin Zhao (2018) Interaction of the changing marine environments and the biologically modulated controls on growth of coral over past 550 years (submitted to Science) 2019 Hou-Chun Liu, Chen-Feng You*, Youbin Sun, Gaojun Li, Chorng-Shern Horng, Kuo-Fang Huang,
Tao Li, Wie-Teh Jiang, Chuan-Hisung Chung, and Chia-Yu Lin (2018). Stable Strontium Isotopic Characteristics of the Pedogenic Carbonates on the Chinese Loess Plateau: Implications for in situ Weathering (revised to GCA)
2019 C.Y. Huang, Pinxin Wang, Mengming Yu, Chen-Feng You, Char-Shine Liu, Xixi Zhao and Graciano P. Yumul Jr. (2019) Mechanism and processes to open the South China Sea from the Eurasian
continent (in-press to National Science Review, IF 13.22, Multidisciplinary Sciences, 3/69) 2019 Hebin Shao, Shouye Yang, Susan E. Humphris, Di Cai, Jianfeng He, Chen-Feng You (2019) Mg
cycling in hydrothermal chlorite-rich sediments in the Okinawa Trough (to be submitted to GCA) 2019 YJ Tu, Chen-Feng You*, Tian-Yue Kuo (2019) Source Identification of Zn in Erren River, Taiwan: an
Application of Zn Isotopic Compositions (submitted to Chemosphere)
2019 Y. Cai, C.F. You, S-F Wu, W. Cai, L.D. Guo (2019) Seasonal variations in strontium and carbon isotope systematics in the lower Mississippi River: Implications for chemical weathering (revised to GCA)
2019 R.M. Wang, C.F. You, J West and C.H. Chung (2019) Uranium isotopic variations in mountainous rivers–a weathering study of the Kaoping River in Southwestern Taiwan (to be submitted to EPSL). 2019 K. Washington; A. J. West; G. Paris; J. F. Adkins; R.M. Wang, C.H. Chung; C.F. You (2019)
Hydrothermal overprint on the Li isotope signature of low-temperature weathering: Insights from southeastern Taiwan (submitted to Geology????)
2019 R.M. Wang, C.F. You, Arthur C.T. Chen, and T.R. Peng (2019) Using uranium isotopes to trace groundwater discharge activity in the southwestern Taiwan.
2019 劉靳,凃耀仁,游鎮烽,段豔平和張浩(2019) 綜述：Cu 同位素示蹤技術應用於環境領域的研究進展 (环境化学)
2019 H. Tsai, J.H. Chen, W.S. Huang, S.T. Huang, Z.Y. Hseu, C.F. You (2019) Aeolian additions on the Podzolic soils of the high-altitude mountains in central Taiwan (to be submitted to Soils Sciences) 2019 TH Wang, CF You, CH Chung, HC Liu and YP Lin (2019) Macro-sublimation: purification of boron
in low-concentration geological samples for isotopic determination by MC-ICPMS (revised to Microchemical Journal, Chemistry/Analytical 28/84, 3.026)
2019 CH Chung, CF You, JW Schopf, N Takahata and Y Sano (2019) NanoSIMS U-Pb dating of
fossil-associated apatite crystals from Ediacaran (~570 Ma) Doushantuo Formation (Revised to PR, 3.834, Geosciences, Multidisciplinary, 32/195
2019 YH Liu, DC Lee, CF You, N Takahata, Y Sano and CM Chou (2019) In-situ U-Pb dating of monazite, xenotime, and zircon from the Lantian black shales: time constraints on provenances, deposition, and fluid flow events (Revised to PR, 3.834, Geosciences, Multidisciplinary, 32/195)
2019 Chuan-Hsiung Chung, Chen-Feng You, Shih-Chieh Hsu, Mao-Chang Liang (2019) Sulfur isotope analysis for representative regional background atmospheric aerosols collected at Mt. Lulin, Taiwan (revised to SR)
2019 M.-T. Chung, K.-F. Huang, C.-F. You, C.-C. Chiao, C.-H. Wang (2019) Elemental ratio of cuttlebone as an indicator of growth rate in cuttlefish Sepia pharaonis (submitted to Frontiers Marine Science)
科技部補助專題研究計畫出席國際學術會議心得報告
日期： 年 月 日計畫編號
MOST107－2116－M－006－005－
計畫名稱
利用非傳統穩定同位素探討前寒武紀/寒武紀過渡期之古環境變化
出國人員
姓名
游鎮烽
服務機構
及職稱
成大理學院地科系/特聘教授
會議時間
108 年 04 月 11 日
至
108 年 04 月 14 日
會議地點
上海同濟大學
會議名稱
(中文)
第一屆海峽兩岸古海洋與古氣候學術會議
(英文) The 1st cross-strait paleoceanography and paleoclimate meeting
發表題目
(中文)利用非傳統穩定同位素探討前寒武/寒武紀過渡期之古環境變化
(英文)
Paleoenvironment Changes During the Precambrian/Cambrian
Transition Using Non-traditional Stable Isotopes
一、 參加會議經過 4月11日下 午2時左 右 搭乘 小港 機場 接駁 車搭乘 April 11, 高雄 -浦東 中華航空 CI 583 17:15-19:30 (由於空橋安排問題我們延遲約1小時抵達浦東機場)，後由接機師父帶領於晚間10時入 住君禮酒店1022室房間。次日開始緊湊3天會議行程(如議程)，4月14日下午5時即搭乘接駁車前往 浦東機場搭乘華航 CI548返台,April 14, 浦東-高雄 中華航空 CI 584 20:45-22:55,由於航程延誤約 1小時，抵達家門時已超過午夜。 研討議題內容 此次會議安排24個口頭報告，圍繞東亞地區氣候和熱帶海氣過程的地質歷史演變這一主題展 開集中探討。主要的研討焦點包括： ■微體生物演化與環境變遷 ■東亞陸緣海洋環流演變 ■西太暖池動力變化 ■低緯季風水迴圈 會議日程 Conference Schedule 日期 時間 排程 地點 4月12日 上午 09:30-13:00 會議註冊 同濟君禧 三樓會議室 11:30-14:00 午餐 同濟君禧 一樓陽光咖啡廳 4月12日 下午 14:00-17:30 學術報告 同濟大學 中法中心C-401
18:30-20:00 歡迎晚宴 白玉蘭酒店 唐宮海鮮坊 4月13日 上午 08:30-11:50 學術報告 同濟大學 中法中心C-401 12:00-13:00 午餐 同濟大學 三好塢餐廳 4月13日 下午 14:00-17:30 學術報告&討 論 同濟大學 中法中心C-401 18:30-20:30 晚餐 浦江夜景餐廳 4月14日 全天 07:00-17:0 0 會後考察 路線一 蘇州 周莊古鎮 08:00-16:00 會後考察 路線二 臨港基地及 洋山深水港 報告安排 Invited Speech 4月12日下午 時間 報告人 單位 報告題目 14:00 -14:05 沈川洲 翦知湣 會議發起人 歡迎詞 14:05 -14:15 翦知湣 同濟大學 同濟深海研究 主持人：魏國彥 14:15 -14:35 李鐵剛 自然資源部 第一海洋研究所 熱帶西太平洋在冰期 旋回碳迴圈中的作用 14:35 -14:55 田軍 同濟大學 偏心率週期在南海
ODP1143站和1148站 底棲有孔蟲13C記 錄中的特徵 14:55 -15:15 林慧玲 中山大學 海洋科學系 南海現生有孔蟲的季 節分佈：生物拖網與 沈積物收集器的記錄 15:15 -15:35 類彥立 中國科學院 海洋研究所 有孔蟲不同殼質類型 對溫度回應的生物學 差異 15:35 -15:50 茶歇 主持人：李鐵剛 15:50 -16:10 游鎮烽 成功大學 地球科學系 利用非傳統穩定同位 素探討前寒武紀/寒武 紀過渡期之古環境變 化 16:10 -16:30 楊守業 同濟大學 東亞大陸邊緣沉積物 風化和源-匯過程的 地球化學約束 16:30 -16:50 賀詩琳 臺灣大學 海洋所 重建過去海水溫度演 變歷史 16:50 -17:10 劉傳聯 同濟大學 過去40萬年顆石藻 Gephyrocapsa同位素 生命效應的演化驅動 17:10 -17:30 魏國彥 臺灣大學 地質系 西赤道太平洋1115B 站位岩芯之鈣質超微 化石Pseudoemiliania
屬自一百三十萬年至 五十萬年前的型態演 化 報告安排 Invited Speech 4月13日上午 午 時間 報告人 單位 報告題目 主持人：翦知湣 8:30 -8:50 張詠斌 中山大學 海洋科學系 上次冰期黑潮 流域水文重建 及 模擬結果 8:50 -9:10 萬隨 中科院南海海 洋研究所 末次冰期旋回 南海和太平洋 的深部環流變 遷 9:10 -9:30 尤柏森 台灣海洋科技 研究中心 晚第四紀南海 北坡之古海洋 變遷 9:30 -9:50 薑仕軍 暨南大學 中新世碳酸鹽 崩潰的環境效 應與發生機制 9:50 -10:10 黃國芳 中研院地球科 學研究所 末次冰消期以 來大西洋中層 洋流循環之變 遷 10:10 -10:30 茶歇
報告安排 Invited Speech
4月13日下午 時間 報告人 單位 報告題目 主持人：沈川洲 14:00 -14:20 李保華 中科院南京地 質古生物研究 所 中中新世以來 南海浮游有孔 蟲變遷與西太 平洋暖池演化 14:20 -14:40 陳惠芬 臺灣海洋大學 地球科學研究 所 中國近2千年來 熱帶氣旋紀錄 與ITCZ的遙相 呼應 14:40 -15:00 張鵬 西北大學 12萬年以來歲 差驅動對印尼 穿越流上部水 體的影響 15:00 -15:20 汪良奇 中正大學 地環系 湖沼沉積物多 指標分析所反 演的台灣晚全 新世古環境變 遷 15:20 -15:40 賈國東 同濟大學 南海晚第四紀 氮迴圈記錄 15:40 -16:00 茶歇 16:00 -16:30 汪品先 同濟大學 石筍和有孔蟲 之爭 16:30 -17:30 翦知湣 沈川洲 會議發起人 討論：未來兩岸 古海洋學 協作發展4月14日全天 08:00-16:00 會後考察 路線二 臨港基地及 洋山深水港 一、 參加會議經過
二、 與會心得
為了推動海峽兩岸古海洋、古氣候學界的學術交流，探討前沿成果和未來合作，兩岸 學者協同召集舉辦“海峽兩岸古海洋與古氣候學術會議”。第一屆會議於 2019 年 4 月 12-14 日在上海舉行，由同濟大學海洋地質國家重點實驗室與臺灣大學地質科學系暨永續地球尖 端科學研究中心聯合主辦。此次會議將邀請來自海峽兩岸古海洋學研究的多家骨幹機構的 同仁，希望能為兩岸古海洋和古氣候學界的交流開啟新的視窗和契機，為未來更多的協作 打下堅實的基礎。 兩岸古海洋與古氣候學者專家(約 50 位)，利用此難得機會多方面進行深入討論及交換 意見，奠定未來更深厚合作基礎。三、 發表論文全文或摘要
AbstractSedimentary rocks record wealth of information on the evolution of lithosphere, hydrosphere,
atmosphere and biosphere. However, uncertainty about the age of many Precambrian sequences
makes it very difficult to establish the accurate temporal framework which can dramatically improve
our understanding of the scale and duration of geological and biological events. The Neoproterozoic
Doushantuo Formation, South China, preserve unique assemblages of early multicellular fossils and
understanding the important biological and climatic events that occurred towards the end of the
Proterozoic Eon. In this study, we used nanoSIMS to date Doushantuo Formations by apatite U-Pb
geochronology. Fossil-associated precipitated apatite grains were identified using optical microscope
and Raman spectrometer. The U-Pb age determinations of apatite grains have been made using
nanoSIMS at The University of Tokyo. The resultant age is 305 ± 26 Ma. High common Pb and low
U concentration in those apatite specimens limit the precision of age determination. The yielded age
suggests that the Doushantuo Formation may have experience a post-depositional hydrothermal
event.
Keywords: U-Pb geochronology, apatite, nanoSIMS, Doushantuo Formation
四、 建議
中國幅員遼闊，近期更經濟進展神速，各個重點大學學術及科研經費投資
增加甚多，令外國人刮目相看，撇開台灣經濟困境，
兩岸學者宜多方合作互補不足，方能 在國際學術舞台，占一席之地，尤其地球科學相關標本，在台灣無法取得，須充分仰賴兩岸合作， 譬如”利用非傳統穩定同位素探討前寒武紀/寒武紀過渡期之古環境變化”極需兩岸科學家充分合作，才能 有所突破，政府或學校宜多方鼓勵類似會議或交流，本人受益甚多，感謝科技部計畫的經費支持。五、 攜回資料名稱及內容
攜回同濟大學海洋地質國家重點實驗室相關著作 4 本 大洋鑽探五十年(海洋地質國家重點實驗室編著, 同濟大學出版社 396p)同濟大學海洋地質國家重點實驗室 2019.4(33p) 海底科學觀測的國技進展(海洋地質國家重點實驗室編著, 同濟大學出版社 263p) 地球系統與演化(汪品先、田軍、黃恩清和馬文濤等著，科學出版社,565p)
六、 其他
會議照片 與會人員合照107年度專題研究計畫成果彙整表
計畫主持人：游鎮烽 計畫編號： 107-2116-M-006-005-計畫名稱：利用非傳統穩定同位素探討前寒武紀/寒武紀過渡期之古環境變化(II) 成果項目 量化 單位 質化 （說明：各成果項目請附佐證資料或細 項說明，如期刊名稱、年份、卷期、起 訖頁數、證號...等） 國 內 學術性論文 期刊論文 0 篇 研討會論文 10Chen, C.Y., You, C.F., Cheng, M.C., Cao, J. (2017)
Chen, Y.H., You, C.F., Chung, C.H., Liu, H.C., Kao, S.J. (2016)
Behavior of lithium isotopes in the Choshui river, Taiwan during
Typhoon Mindulle, TGA, Taipei, Taiwan
Chuan-Hsiung Chung, Chen-Feng You, Hou-Chun Liu, James William Schopf, Yuji Sano, Takafumi Hirata and Chuanming Zhou (2017) U-Pb
Radiometric dating study on early Cambrian Chulaktau and and
Neoproterozoic Lantian Formations. 2017 Inter-disciplinary Earth
Science in Next Generation, Tainan, Taiwan
Lin, S.S., You, C.F., Liu, H.C., Chung, C.H., Zhou, C.M. (2017) Magnesium and Strontium isotopic variations of Cap-carbonate from Lantian Formation at Shiyu, South China, 2017 Inter-disciplinary Earth Science in Next Generation, Tainan, Taiwan
Liu, H.C., You, C.F., Huang, K.F., Chung, C.H., Sun, Y.B. (2017) Stable Strontium Isotopic Distribution and Fractionation during Continental Weathering in a Chinese Loess Profile. 2017 Inter-disciplinary Earth Science in Next Generation, Tainan, Taiwan
Liu, Y.H., Lee, D.C., You, C.F., Naoto Takahata, Yuji Sano, Zhou, C.M. (2017) NanoSIMS U-Pb dating of xenotime and monazite from the Lantain black shales: time constraints on deposition and hydrothermal event. 2017 Inter-disciplinary Earth Science in Next
Generation, Tainan, Taiwan Seasonal-spatial variation and sources study of PM2.5 at costal megacities in China between 2002 and 2004. 2017 Taiwan Geosciences Assembly (TGA), Tainan City,
Taiwan, P-244. Poster presentation. 林彥伯, 游鎮烽, 林斐然, 鍾全雄 (2017)彭佳嶼地區氣溶膠中水溶性離子 隨季節之濃度變化與來源示蹤, 臺灣地 球科學聯合學術研討, 台南, 台灣。 蔡敏嘉，游鎮烽，蔡衡，鍾全雄，劉厚 均，林彥伯(2017)全新世中期以來台灣 地區土壤剖面化育及其環境變遷評估初 探，臺灣地球科學聯合學術研討, 台南, 台灣。 2019
Hou-Chun Liu, Chen-Feng You, Youbin Sun, Gaojun Li, Chorng-Shern Horng, Kuo-Fang Huang,
Tao Li, Wie-Teh Jiang, Chuan-Hisung Chung, and Chia-Yu Lin (2019). Stable Strontium
Isotopic Characteristics of the Pedogenic Carbonates on the Chinese Loess Plateau:
Implications for in situ
Weathering. TGA Taipei (2019/05/14)
專書 5 本 游耀智(碩)北台灣金瓜石酸性礦山排水 整治及稀土元素富集 高宗佑(碩) 彭佳嶼的氣溶膠來源及貢 獻的季節性變化: 水溶性離子與硫同位 素證據 蔡敏嘉(碩)利用硼同位素探討全新世中 期以來臺灣地區高山土壤剖面及其環境 變遷 108 年 評估高屏溪河水鋰同位素乾濕季節性變 化的影響機制(學士) 利用鎂同位素探討米羅斯島海底熱液系 統的水岩反應過程(學士) 專書論文 0 章 技術報告 0 篇 其他 0 篇 智慧財產權 及成果 專利權 發明專利 申請中 0 件 已獲得 0 新型/設計專利 0 商標權 0
營業秘密 0 積體電路電路布局權 0 著作權 0 品種權 0 其他 0 技術移轉 件數 0 件 收入 0 千元 國 外 學術性論文 期刊論文 6 篇
K. J. Meyer, A. E. Carey, C.F. You (2017) Typhoon impacts on chemical weathering source provenance of a high standing island watershed, Taiwan, Geochimica et Cosmochimica Acta 215, 404-420. (SCI, IF 4.61, 5/83) in GEOCHEMISTRY &
GEOPHYSICS).
Laifeng Li, Jun Chen, Tianyu Chen, Yang Chen, David William Hedding, Gen Li, Le Li, Tao Li, Laura F. Robinson, A. Joshua West, Weihua Wu, Chen-Feng You, Liang Zhao, Gaojun Li (2018) Weathering
dynamics reflected by the response of riverine uranium isotope
disequilibrium to changes in denudation rate, Earth and
Planetary Science Letters Volume 500, 136-144.
Ju-Lien Pi, Chen-Feng You*, Huai-Jen Yang and Chorng-Shern Horng (2019) The B isotopic behavior in metapelite during low-grade
metamorphism: observations in the Central Range, Taiwan, Chemical Geology 520, 1–10
2019 S. K. Aggarwal, T.H. Wang, C.F. You and C.H. Chung (2017) Experimental evaluation and minimization of memory effect in isotope ratio determination of boron with high resolution multi-collector inductively coupled plasma source mass spectrometry (MC-ICPMS)
Fei Zhang, Zhangdong Jin, A. Joshua West, Zhisheng An, Robert G.
Hilton, Jin Wang, Gen Li, Alexander L. Densmore, Jimin Yu, Xiaoke
Qiang, Youbin Sun, Liangbo Li, Longfei Gou, Yang Xu, Xinwen Xu, Xingxing Liu, Yanhui Pan &
Chen-Feng You (2019) Monsoonal control on a delayed sedimentation response to the 2008 Wenchuan earthquake, Science Advances 5:eaav 7110 (June 2019, IF 12.80, Multidisciplinary Sciences, 4/69)
Yao-Jen Tu, Chen-Feng You; Sheng-Chung Lo; Ting-Shan Chan (2019) Enhanced Recovery of Neodymium from Actual Waters Using Surface
Functionalized Ferrite
Environmental Technique 40:12, 1592-1604(Environmental Sciences, 144/242).
Yi Liu, Shicheng Tao, Kefu Yu, Chen-Feng You, Tzu-Hao Wang, Qi Shi, ZhengguoShi, Huiling Zhang, Tegu Chen, Jianxin Zhao (2018) Interaction of the changing marine environments and the biologically modulated controls on growth of coral over past 550 years
(submitted to Science)
Hou-Chun Liu, Chen-Feng You*,
Youbin Sun, Gaojun Li, Chorng-Shern Horng, Kuo-Fang Huang, Tao Li, Wie-Teh Jiang, Chuan-Hisung Chung, and Chia-Yu Lin (2018). Stable
Strontium Isotopic
研討會論文 0
專書 0 本
專書論文 4 章
2018H.C. Liu and C.F. You* (2018) Geochemical speciation and risk assessment of heavy metals in Taiwan coastal sediments. Sediment Watch: Monitoring, Ecological Risk Assessment and Environmental
Management (ISBN: 978-1-53613-856-6). New York, USA: NOVA Science Publishers. May, 2018: 227-250. 2018C.H. Chung , C.F.You* and C.S. Horng (2018) Nd isotopic signature in sedimentary Mn/Fe oxides: tracer of Kuroshio Current variation in the last 27ka. Sediment Watch: Monitoring, Ecological Risk Assessment and Environmental
Management (ISBN: 978-1-53613-856-6). New York, USA: NOVA Science Publishers. May.
HC Liu, CH Chung and TH Wang (2018) Isotopic compositions of Pb in river water and sediments in the Erren River, SW Taiwan Sediment Watch: Monitoring, Ecological Risk Assessment and Environmental
Management (ISBN: 978-1-53613-856-6). New York, USA: NOVA Science Publishers. May.
2018Chee Kong Yap*, Hisham Isak,Wan Hee Cheng, Koe Wei Wong,
Hishamuddin Omar, Rosimah Nulit, Shamarina Shohaimi, Moslem
Sharifinia, Chen-Feng You, Feng Ye, Alireza Riyahi Bakhtiari and Salman Abdo Al-Sham (2018) Ecological risk assessment of heavy metals in
polluted drainage sediments from Malacca Industrial Area and Malacca River, Malaysia. Sediment Watch: Monitoring, Ecological Risk Assessment and Environmental
Management (ISBN: 978-1-53613-856-6). New York, USA: NOVA Science Publishers. May. 技術報告 0 篇 其他 0 篇 智慧財產權 及成果 專利權 發明專利 申請中 0 件 已獲得 0 新型/設計專利 0 商標權 0 營業秘密 0 積體電路電路布局權 0 著作權 0 品種權 0 其他 0 技術移轉 件數 0 件 收入 0 千元 參 與 計 畫 人 力 本國籍 大專生 2 人次 陳宜琪 陳偉晨 碩士生 0 博士生 1 林彥伯 博士級研究人員 1 鍾全雄 專任人員 1 程安琪 非本國籍 大專生 0
碩士生 0 博士生 0 博士級研究人員 0 專任人員 0 其他成果 （無法以量化表達之成果如辦理學術活動 、獲得獎項、重要國際合作、研究成果國 際影響力及其他協助產業技術發展之具體 效益事項等，請以文字敘述填列。） TGA最佳碩士論文獎(王子豪) TGA最佳博士論文獎(畢如蓮)
