地学前缘 ›› 2022, Vol. 29 ›› Issue (1): 160-175.DOI: 10.13745/j.esf.sf.2021.8.13
徐林刚1,2(), 付雪瑞1, 叶会寿3, 郑伟3, 陈勃4, 方正龙4
收稿日期:
2021-04-25
修回日期:
2021-06-22
出版日期:
2022-01-25
发布日期:
2022-02-22
作者简介:
徐林刚(1981—),博士,副教授,主要从事矿床学与同位素地球化学研究。E-mail: xulingang@cugb.edu.cn
基金资助:
XU Lingang1,2(), FU Xuerui1, YE Huishou3, ZHENG Wei3, CHEN Bo4, FANG Zhenglong4
Received:
2021-04-25
Revised:
2021-06-22
Online:
2022-01-25
Published:
2022-02-22
摘要:
南秦岭地区下寒武统黑色页岩是我国主要的富钒层位,其中千家坪大型钒矿是典型代表。矿体主要赋存在水沟口组第一岩性段的碳硅质岩石中。为了探讨钒矿的成矿物质来源和南秦岭早寒武世古海洋氧化-还原环境,本文对水沟口组第一岩性段富钒碳硅质岩和上覆的第二岩性段泥质灰岩开展了岩石地球化学研究。第一岩性段碳硅质岩比第二岩性段泥质灰岩具有更高的Y/Ho比值,说明碳硅质岩主要为海水自生沉积形成的,而泥质灰岩的物质组成主要来自陆源碎屑。Eu/Eu*与V含量不具备正相关关系,且Y/P2O5-Zr/Cr和Fe/Ti-Al/(Al+Fe+Mn)图解均显示钒矿主要是海水沉积形成的,热液作用对成矿元素的富集贡献很小。水沟口组样品Ce/Ce*均为负异常,变化范围为0.26~0.96,第一岩性段钒矿石比第二岩性段泥质灰岩具有高Mo/Sc、V/Sc、V/Cr比值,低Th/U比值的特征,反映了早寒武世早期南秦岭为氧化-还原分层的古海洋结构,而晚期古海洋则全部被氧化。
中图分类号:
徐林刚, 付雪瑞, 叶会寿, 郑伟, 陈勃, 方正龙. 南秦岭地区下寒武统黑色页岩赋存的千家坪大型钒矿地球化学特征及成矿环境[J]. 地学前缘, 2022, 29(1): 160-175.
XU Lingang, FU Xuerui, YE Huishou, ZHENG Wei, CHEN Bo, FANG Zhenglong. Geochemical composition and paleoceanic environment of the Lower Cambrian black shale-hosted Qianjiaping vanadium deposit in the southern Qinling Region[J]. Earth Science Frontiers, 2022, 29(1): 160-175.
图4 南秦岭千家坪钒矿矿体特征 a—条带状钒矿石;b—条带状矿石中夹泥质岩透镜体;c—钒矿层中赋存的磷结核;d—第一岩性段条带状矿石与第二岩性段泥质灰岩接触带。
Fig.4 Field photos showing geological features of the Qianjiaping vanadium deposit
图5 千家坪钒矿岩(矿)石典型手标本及显微结构 a—第二岩性段泥质灰岩;b—细晶方解石和石英共生;c—第一岩性段碳硅质岩夹泥岩型矿石;d—微晶石英与碳质黏土矿物互层;e—第一岩性段泥岩型矿石;f—微晶石英与黏土矿物共生。
Fig.5 Photos and photomicrographs of typical hand specimen of vanadium ore and host rock from the Qianjiaping vanadium deposit
图8 千家坪钒矿剖面水沟口组第二岩性段(a)和第一岩性段(b)样品标准化稀土元素配分模式图 (澳大利亚后太古代平均页岩值引自文献[29]; 现代海水值引自文献[34])
Fig.8 PAAS-normalized REE+Y distribution patterns in samples from the 2nd (a) and 1st (b) member of the Shuigoukou Formation
图9 千家坪钒矿水沟口组第二岩性段(a)和第一岩性段(b)Al2O3含量与∑REE关系图
Fig.9 Al2O3-∑REE binary plots for samples from the 2nd (a) and 1st (b) member of the Shuigoukou Formation in the Qianjiaping vanadium deposit
图10 千家坪钒矿成矿物质来源判别图解 (b、c、d底图引自文献[42])
Fig.10 Discriminant plots for sediments with hydrothermal and hydrogenous origins. Basemaps in b, c and d adapted from [42].
图11 千家坪钒矿水沟口组氧化-还原沉积环境判别图
Fig.11 Discriminant plots for redox conditions during the deposition of the Shuigoukou Formation in the Qianjiaping vanadium deposit
[1] | 李胜荣, 高振敏. 湘黔寒武系底部黑色岩系贵金属元素来源示踪[J]. 中国科学D辑: 地球科学, 2000, 30(2):169-174. |
[2] | 孙晓明, 王敏, 薛婷, 等. 华南下寒武统黑色岩系铂多金属矿中黄铁矿流体包裹体的He-Ar同位素体系[J]. 高校地质学报, 2003, 9(4):661-666. |
[3] | 王立社. 陕西秦岭黑色岩系及其典型矿床地质地球化学与成矿规律研究[D]. 西安: 西北大学, 2009: 1-165. |
[4] | OCH L M. Biogeochemical cycling through the Neoproterozoic—Cambrian transition in China: an integrated study of redox-sensitive elements[D]. London: University College London, 2011: 1-266. |
[5] |
XU L G, LEHMANN B, MAO J W, et al. Re-Os age of polymetallic Ni-Mo-PGE-Au mineralization in Early Cambrian black shales of South China: a reassessment[J]. Economic Geology, 2011, 106:511-522.
DOI URL |
[6] |
XU L G, LEHMANN B, MAO J W. Seawater contribution to polymetallic Ni-Mo-PGE-Au mineralization in Early Cambrian black shales of South China: evidence from Mo isotope, PGE, trace element and REE geochemistry[J]. Ore Geology Reviews, 2013, 52:66-84.
DOI URL |
[7] |
XU L G, LEHMANN B, MAO J W, et al. Strontium, sulfur, carbon, and oxygen isotope geochemistry of the Early Cambrian strata-bound barite and witherite deposits of the Qinling-Daba region, northern margin of the Yangtze Craton, China[J]. Economic Geology, 2016, 111(3):695-718.
DOI URL |
[8] |
MAO J W, LEHMANN B, DU A D, et al. Re-Os dating of polymetallic Ni-Mo-PGE-Au mineralization in Lower Cambrian black shales of South China and its geologic significance[J]. Economic Geology, 2002, 97(5):1051-1061.
DOI URL |
[9] |
JIANG S Y, CHEN Y Q, LING H F, et al. Trace- and rare-earth element geochemistry and Pb-Pb dating of black shales and intercalated Ni-Mo-PGE-Au sulfide ores in Lower Cambrian strata, Yangtze Platform, South China[J]. Mineralium Deposita, 2006, 41(5):453-467.
DOI URL |
[10] |
JIANG S Y, YANG J H, LING H F, et al. Extreme enrichment of polymetallic Ni-Mo-PGE-Au in Lower Cambrian black shales of South China: an Os isotope and PGE geochemical investigation[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2007, 254(1/2):217-228.
DOI URL |
[11] |
CAO J, HU K, ZHOU J, et al. Organic clots and their differential accumulation of Ni and Mo within Early Cambrian black-shale-hosted polymetallic Ni-Mo deposits, Zunyi, South China[J]. Journal of Asian Earth Sciences, 2013, 62:531-536.
DOI URL |
[12] |
XU J, ZHU S Y, LUO T Y, et al. Uranium mineralization and its radioactive decay-induced carbonization in a black shale-hosted polymetallic sulfide ore layer, Southwest China[J]. Economic Geology, 2015, 110(6):1643-1652.
DOI URL |
[13] | 朱红周, 侯俊富, 王淑利. 南秦岭千家坪钒矿床地质地球化学特征与钒的富集规律[J]. 中国地质, 2010, 37(5):1490-1500. |
[14] | 朱红周, 侯俊富, 原连肖, 等. 南秦岭千家坪钒矿床钒赋存状态研究[J]. 地质与勘探, 2010, 46(4):643-648. |
[15] | 李赛赛. 陕西省商南县—山阳县下寒武统黑色岩系中钒矿田地质构造特征及成因探讨[D]. 西安: 长安大学, 2012: 1-146. |
[16] | 谭兴华, 王瑞廷, 廖俊红, 等. 宁陕县大构园沟钒矿床地质特征及矿床成因探讨[J]. 西北地质, 2014, 47(1):171-178. |
[17] | 李赛赛, 刘战庆. 南秦岭早寒武世黑色岩系钒矿床成因研究进展[J]. 桂林理工大学学报, 2015, 35(4):774-779. |
[18] | 张贵山, 温汉捷, 郑厚义. 千家坪钒矿床形成机制初步探讨[J]. 矿床地质, 2002, 21(增刊):349-352. |
[19] | 郑厚义. 扬子地块北缘黑色岩系的铂族元素富集特征: 以千家坪矿区为例[J]. 矿物学报, 2009, 29(增刊):161-162. |
[20] |
DONG Y P, ZHANG G W, NEUBAUER F, et al. Tectonic evolution of the Qinling orogeny, China: review and synjournal[J]. Journal of Asian Earth Sciences, 2011, 41(3):213-237.
DOI URL |
[21] | 刘家军, 吴胜华, 柳振江, 等. 南秦岭大型钡成矿带中毒重石矿床成因新认识: 来自单个流体包裹体证据[J]. 地学前缘, 2010, 17(2):222-238. |
[22] |
DONG S W, GAO R, YIN A, et al. What drove continued continent-continent convergence after ocean closure? Insights from high-resolution seismic-reflection profiling across the Daba Shan in central China[J]. Geology, 2013, 41(6):671-674.
DOI URL |
[23] | 胡娟, 刘晓春, 陈龙耀, 等. 扬子克拉通北缘约2.5 Ga岩浆事件: 来自南秦岭陡岭杂岩锆石U-Pb年代学和Hf同位素证据[J]. 科学通报, 2013, 58(34):3579-3588. |
[24] | 查显锋. 南秦岭佛坪隆起的构造过程及成因机制[D]. 西安: 西北大学, 2010: 1-59. |
[25] | 李建华, 张岳桥, 徐先兵, 等. 北大巴山凤凰山岩体锆石U-Pb LA-ICP-MS年龄及其构造意义[J]. 地质论评, 2012, 58(3):581-593. |
[26] | 邹先武, 段其发, 汤朝阳, 等. 北大巴山镇坪地区辉绿岩锆石SHRIMP U-Pb定年和岩石地球化学特征[J]. 中国地质, 2011, 38(2):282-291. |
[27] | 许光, 王坤明, 王宗起, 等. 北大巴山花栎村镁铁质岩地球化学、 年代学及其构造环境制约[J]. 地质通报, 2018, 37(7):1279-1290. |
[28] |
LAWRENCE M G, GREIG A, COLLERSON K D, et al. Rare earth element and yttrium variability in south east Queensland waterways[J]. Aquatic Geochemistry, 2006, 12(1):39-72.
DOI URL |
[29] | MCLENNAN S M. Rare earth elements in sedimentary rocks: influence of provenance and sedimentary processes[J]. Reviews in Mineralogy and Geochemistry, 1989, 21(1):169-200. |
[30] |
PIPER D Z. Seawater as the source of minor elements in black shales, phosphorites and other sedimentary rocks[J]. Chemical Geology, 1994, 114(1/2):95-114.
DOI URL |
[31] |
JOHNSON K M, GRIMM K A. Opal and organic carbon in laminated diatomaceous sediments: Saanich Inlet, Santa Barbara Basin and the Miocene Monterey Formation[J]. Marine Geology, 2001, 174(1/2/3/4):159-175.
DOI URL |
[32] |
BAU M, DULSKI P. Distribution of yttrium and rare-earth elements in the Penge and Kuruman iron-formations, Transvaal Supergroup, South Africa[J]. Precambrian Research, 1996, 79(1/2):37-55.
DOI URL |
[33] |
SCHRÖDER S, GROTZINGER J P. Evidence for anoxia at the Ediacaran-Cambrian boundary: the record of redox-sensitive trace elements and rare earth elements in Oman[J]. Journal of the Geological Society, London, 2007, 164(1):175-187.
DOI URL |
[34] | NOZAKI Y. A fresh look at element distribution in the North Pacific[J]. EOS, 1997, 78(21):221. |
[35] |
TOSTEVIN R, SHIELDS G A, TARBUCK G M, et al. Effective use of cerium anomalies as a redox proxy in carbonate-dominated marine settings[J]. Chemical Geology, 2016, 438:146-162.
DOI URL |
[36] | 侯俊富. 南秦岭下寒武统黑色岩系中金-钒成矿特征及成矿规律[D]. 西安: 西北大学, 2008: 1-87. |
[37] | 张复新, 王立社, 侯俊富. 秦岭造山带黑色岩系与金属矿床类型及成矿系列[J]. 中国地质, 2009, 36(3):694-704. |
[38] |
WEN H J, FAN H F, TIAN S H, et al. The formation conditions of the Early Ediacaran cherts, South China[J]. Chemical Geology, 2016, 430:45-69.
DOI URL |
[39] |
SVERJENSKY D A. Europium redox equilibria in aqueous solution[J]. Earth and Planetary Science Letters, 1984, 67(1):70-78.
DOI URL |
[40] |
TEPE N, BAU M. Behavior of rare earth elements and yttrium during simulation of arctic estuarine mixing between glacial-fed river waters and seawater and the impact of inorganic (nano-) particles[J]. Chemical Geology, 2016, 438:134-145.
DOI URL |
[41] |
XU L G, FRANK A B, LEHMANN B, et al. Subtle Cr isotope signals track the variably anoxic Cryogenian interglacial period with voluminous manganese accumulation and decrease in biodiversity[J]. Scientific Reports, 2019, 9:15056.
DOI URL |
[42] |
MARCHIG V, GUNDLACH H, MÖLLER P, et al. Some geochemical indicators for discrimination between diagenetic and hydrothermal metalliferous sediments[J]. Marine Geology, 1982, 50(3):241-256.
DOI URL |
[43] | BOSTRÖM K. Genesis of ferromanganese deposits-diagnostic criteria for recent and old deposits[M]//RONA P A. Hydrothermal processes at seafloor spreading centers. Berlin: Springer, 1983: 473-489. |
[44] |
PETER J M, GOODFELLOW W D. Mineralogy, bulk and rare earth element geochemistry of massive sulphide-associated hydrothermal sediments of the Brunswick Horizon, Bathurst Mining Camp, New Brunswick[J]. Canadian Journal of Earth Science, 1996, 33(2):252-283.
DOI URL |
[45] |
YU W C, ALGEO T J, DU Y S, et al. Genesis of Cryogenian Datangpo manganese deposit: hydrothermal influence and episodic post-glacial ventilation of Nanhua Basin, South China[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2016, 459:321-337.
DOI URL |
[46] |
ALIBO D S, NOZAKI Y. Rare earth elements in seawater: particle association, shale-normalization, and Ce oxidation[J]. Geochimica et Cosmochimica Acta, 1999, 63(3/4):363-372.
DOI URL |
[47] | HEIN J R, KOSCHINSK A, BAU M, et al. Cobalt-rich ferromanganese crusts in the Pacific[M]//Handbook of marine mineral deposits. Boca Roton: CRC Press, 2000: 239-279. |
[48] | KAMBER B S, WEBB G E. The geochemistry of late Archaean microbial carbonate: implications for ocean chemistry and continental erosion history[J]. Geochimica et Cosmochimica Acta, 2001, 63(15):2509-2525. |
[49] |
CABRAL A R, CREASER R A, NÄGLER T, et al. Trace-element and multi-isotope geochemistry of Late-Archean black shales in the Carajás iron-ore district, Brazil[J]. Chemical Geology, 2013, 362:91-104.
DOI URL |
[50] |
SCHIJF J, DE BAAR H J W, WIJBRANS J R, et al. Dissolved rare earth elements in the Black Sea[J]. Deep Sea Research, Part A: Oceanographic Research Papers, 1991, 38:S805-S823.
DOI URL |
[51] |
TRIBOVILLARD N, ALGEO T J, LYONS T, et al. Trace metals as paleoredox and paleoproductivity proxies: an update[J]. Chemical Geology, 2006, 232(1/2):12-32.
DOI URL |
[52] |
JONES B, MANNING D A C. Comparison of geochemical indices used for the interpretation of palaeoredox conditions in ancient mudstones[J]. Chemical Geology, 1994, 111(1/2/3/4):111-129.
DOI URL |
[53] |
RIMMER S M. Geochemical paleoredox indicators in Devonian—Mississippian black shales, central Appalachian Basin (USA)[J]. Chemical Geology, 2004, 206(3/4):373-391.
DOI URL |
[1] | 朱紫怡, 周飞, 王瑀, 周统, 侯照亮, 邱昆峰. 基于机器学习的锆石成因分类研究[J]. 地学前缘, 2022, 29(5): 464-475. |
[2] | 梁晓亮, 谭伟, 马灵涯, 朱建喜, 何宏平. 离子吸附型稀土矿床形成的矿物表/界面反应机制[J]. 地学前缘, 2022, 29(1): 29-41. |
[3] | 易泽邦, 付伟, 赵芹, 许成, 陆济璞. 花岗岩风化壳中稀土纳米微粒的提取、表征及赋存状态研究[J]. 地学前缘, 2022, 29(1): 42-53. |
[4] | 王武名, 盛涛, 王丽娟, 董少波. 刚果(金)加丹加鲁苏西铜钴矿床S、C、O、Sr同位素特征及矿床成因[J]. 地学前缘, 2021, 28(6): 318-330. |
[5] | 何明倩, 黄文辉, 久博. 鄂尔多斯盆地膏质白云岩有利储层的成因及演化[J]. 地学前缘, 2021, 28(4): 327-336. |
[6] | 洪双, 左仁广, 胡浩, 熊义辉, 王子烨. 磁铁矿元素地球化学大数据构建及其在矿床成因分类中的应用[J]. 地学前缘, 2021, 28(3): 87-96. |
[7] | 王旭影, 姜在兴. 苏北盆地古近系阜三段物源特征及其形成的构造背景分析[J]. 地学前缘, 2021, 28(2): 376-390. |
[8] | 任江波, 邓义楠, 赖佩欣, 何高文, 王汾连, 姚会强, 邓希光, 刘永刚. 太平洋调查区多金属结核的地球化学特征和成因[J]. 地学前缘, 2021, 28(2): 412-425. |
[9] | 郭飞, 王智琳, 许德如, 于得水, 董国军, 宁钧陶, 康博, 彭尔柯. 湖南栗山铅锌铜多金属矿床闪锌矿微量元素特征及成矿指示意义[J]. 地学前缘, 2020, 27(4): 66-81. |
[10] | 段文晶, 赵甫峰, 任科法, 刘显凡, 邓江红, 杨蜜蜜, 楚亚婷. 滇西六合正长斑岩和花岗岩包体中锆石U-Pb年代和微量元素地球化学研究[J]. 地学前缘, 2020, 27(3): 154-167. |
[11] | 洪东铭, 简星, 黄鑫, 张巍, 马金戈. 石榴石微量元素地球化学及其在沉积物源分析中的应用[J]. 地学前缘, 2020, 27(3): 191-201. |
[12] | 刘家军, 翟德高, 王大钊, 高燊, 尹超, 柳振江, 王建平, 王银宏, 张方方. Au-(Ag)-Te-Se成矿系统与成矿作用[J]. 地学前缘, 2020, 27(2): 79-98. |
[13] | 邓军, 王庆飞, 陈福川, 李龚健, 杨立强, 王长明, 张静, 孙祥, 舒启海, 和文言, 高雪, 高亮, 刘学飞, 郑远川, 邱昆峰, 薛胜超, 徐佳豪. 再论三江特提斯复合成矿系统[J]. 地学前缘, 2020, 27(2): 106-136. |
[14] | 赵新福, 曾丽平, 廖旺, 李婉婷, 胡浩, 李建威. 长江中下游成矿带玢岩铁矿研究新进展及对矿床成因的启示[J]. 地学前缘, 2020, 27(2): 197-217. |
[15] | 甄世民, 庞振山, 朱晓强, 薛建玲, 方永财, 贾宏翔, 石光耀, 王大钊, 查钟健, 宋晓航. 山西梨园金矿黄铁矿微量元素及S-Pb-He-Ar同位素地球化学特征及其地质意义[J]. 地学前缘, 2020, 27(2): 373-390. |
阅读次数 | ||||||
全文 |
|
|||||
摘要 |
|
|||||