Characteristics and Significance of C-O Isotopes of Oligocene Miocene Lacustrine Carbonate Rocks in Zhangxian, Northern Margin of West Qinling Mountains
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摘要: 位于西秦岭北缘的漳县盆地渐新统—中新统时期沉积大量湖相碳酸盐岩，其碳、氧同位素特征对揭示这一时期青藏高原东北缘的古环境和古气候具有重要意义。碳、氧同位素研究表明，漳县盆地湖相碳酸盐岩δ13CV-PDB值介于-7.6‰~-2.0‰，平均值为-5.04‰；δ18OV-PDB值介于-9.11‰~1.12‰，平均值为-2.10‰。δ18OV-PDB值与现代封闭湖泊一致，显示漳县盆地在渐新统—中新统是封闭湖泊，古温度平均值为17℃，比现代平均气温高10℃左右，且剖面中含有石膏和芒硝，表明漳县盆地在渐新统—中新统处于较温暖干旱的气候环境；同时，古盐度Z值平均值为116，所以漳县盆地在该时期是一个封闭的半咸水陆相湖泊。通过δ13CV-PDB值可知，其生产力较高，但由于古湖水中含有硫酸盐细菌，还原反应影响有机质的保存，故δ13CV-PDB值偏负。漳县盆地渐新统—中新统古环境和古气候变化与邻区西宁盆地、循化盆地、临夏盆地和天水盆地的记录基本一致，都是逐渐干旱化。造成这种变化的原因主要是全球气候变化，与青藏高原的强烈隆升关系不大。Abstract: Zhangxian basin, located in the northern margin of the west Qinling mountains, deposited a large number of lacustrine carbonate rocks during the Oligocene-Miocene. Its C and O isotopic characteristics are of great significance to reveal the paleoenvironment and Paleoclimate of the northeastern margin of the Qinghai Tibet plateau during this period δ13CV-PDB values ranged from-7.6 ‰ to-2.0 ‰, with an average of-5.04 ‰, δ18OV-PDB values ranged from-9.11 ‰ to 1.12 ‰, with an average of-2.10 ‰. δ18OV-PDB. value is consistent with that of the modern closed lake, which indicates that Zhangxian basin is a closed lake in Oligocene-Miocene. The average paleotemperature is 17℃, which is about 10℃ higher than the modern temperature, and the profile contains gypsum and mirabilite, which indicates that Zhangxian basin is in a warm and arid climate environment in Oligocene-Miocene, and the average paleosalinity Z value is 116, Therefore, Zhangxian basin was a closed semi saline continental lake in this period. adopt δ13CV-PDB value shows that the productivity is high, but the reduction reaction affects the preservation of organic matter because of the sulfate bacteria in the ancient lake water δ13CV-PDB was negative. The Oligocene-Miocene paleoenvironment and paleoclimate changes in Zhangxian basin are basically consistent with the Oligocene-Miocene records of Xining basin, Xunhua basin, Linxia basin and Tianshui basin, all of which are gradually arid. The main reason for this change is the global climate change, which has little to do with the rapid uplift of the Qinghai Tibet plateau.
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方小敏, 奚晓霞, 李吉均, 等. 中国西部晚中新世气候变干事件的发现及其意义[J]. 科学通报, 1997, 42(23):2521-2524.
FANG Xiaomin, XI Xiaoxia, LI Jijun, et al. Discovery and significance of late Miocene climate drying event in Western China[J]. Chinese Science Bulletin, 1997, 42(23):2521-2524.
冯盛楠, 刘兴起, 李华淑. 中国西部湖泊水体δD与δ18O的空间变化特征及其影响因素[J]. 湖泊科学, 2020, 32(4):1199-1211.
FENG Shengnan, LIU Xingqi, LI Huashu. Spatial variations of δD and δ18O in lake water of western China and their controlling factors[J]. Journal of Lake Sciences, 2020, 32(4):1199-1211.
冯益民, 曹宣铎, 张二朋, 等. 西秦岭造山带的演化、构造格局和性质[J]. 西北地质, 2003, 36(1):1-10.
FENG Yimin, CAO Xuanduo, ZHANG Erpeng, et al. Tectonic evolution framework and nature of The West Qinling orogenic belt[J]. Northwestern Geology, 2003, 36(1):1-10.
郭进京, 韩文峰, 胡晓隆, 等. 西秦岭北缘漳县新生代伸展断陷盆地确定及其地质意义[J]. 地学前缘, 2017, 24(5):230-244.
GUO Jinjing, HAN Wenfeng, HU Xiaolong, et al. Cenozoic extensional rift Basin in the northern margin of Western Qinling:constraints on the remote tectonic responses to the India-Eurasia collision in the northeastern margin of Tibetan Plateau[J]. Earth Science Frontiers, 2017, 24(5):230-244.
郭进京, 张琛, 吉夏, 等. 西秦岭北缘一个新生代伸展型角度不整合及其地质意义[J]. 地质通报, 2018, 37(10):1831-1841.
GUO Jinjing, ZHANG Chen, JI Xia, et al. A Cenozoic extensional angular unconformity on the northern margin of West Qinling Mountain and its geological significance[J]. Geological Bulletin of China, 2018, 37(10):1831-1841.
郭进京, 韩文峰, 赵海涛, 等. 西秦岭北缘漳县中-新生代红层地层格架厘定及其地质意义[J]. 西北地质, 2016, 49(1):82-91.
GUO Jinjing, HAN Wenfeng, ZHAO Haitao, et al. Stratigraphic framework of Mesozoic-Cenozoic red bed in Zhang County, Northern margin of Western Qinling and its geological significance[J]. Northwestern Geology, 2016, 49(1):82-91.
郭进京, 赵海涛, 刘重庆, 等. 青藏高原东北缘何时卷入现今青藏高原构造系统?——以西秦岭北缘构造带漳县盆地为例[J]. 地学前缘, 2021, 28(5):337-361.
GUO Jinjing, ZHAO Haitao, LIU Chongqing, et al. When was the northeastern margin of the Qinghai Tibet Plateau involved in the present tectonic system of the Qinghai-Tibet plateau? -Taking Zhangxian Basin in the northern margin of West Qinling as an example[J]. Earth Science Frontiers, 2021, 28(5):337-361.
郭金春, 马海州, 宋恩玉, 等. 湖泊碳酸盐在过去环境变化研究中的应用[J]. 盐湖研究, 2008, 16(2):66-72.
GUO Jinchun, MA Haizhou, SONG Enyu, et al. Applications of lacustrine carbonate in paleoenvironment research[J]. Journal of Salt Lake Research, 2008, 16(2):66-72.
侯战方, 张军, 宋春晖, 等. 青藏高原天水盆地中新世沉积物碳氧同位素对古气候演化的指示[J]. 海洋地质与第四纪地质, 2011, 31(3):69-78.
HOU Zhanfang, ZHANG Jun, SONG Chunhui, et al. The oxygen and carbon isotopic records of Miocene sediments in the Tianshui Basin of the Northestern Tibetan Plateau and their paleoclimatic implications[J]. Marine Geology & Quaternary Geology, 2011, 31(3):69-78.
季军良, 洪汉烈, 肖国桥, 等. 青藏高原新近纪重大气候事件演化序列[J]. 地质通报, 2013, 32(1):120-129.
JI Junliang, HONG Hanlie, XIAO Guoqiao, et al. Evolutionary sequences of the Neogene major climate events in the Tibetan Plateau[J]. Geological Bulletin of China, 2013, 32(1):120-129.
李传友, 张培震, 张剑玺, 等. 西秦岭北缘断裂带黄香沟段晚第四纪活动表现与滑动速率[J]. 第四纪研究, 2007, 27(1):54-63.
LI Chuanyou, ZHANG Peizhen, ZHANG Jianxi, et al. Late-Quaternary activity and slip rate of the Western Qinling fault zone at Huangxianggou[J]. Quaternary Sciences, 2007, 27(1):54-63.
李吉均, 方小敏, 潘保田, 等. 新生代晚期青藏高原强烈隆起及其对周边环境的影响[J]. 第四纪研究, 2001, 21(5):381-391.
LI Jijun, FANG Xiaomin, PAN Baotian, et al. Late Cenozoic intensive uplift of Qinghai-Xizang Plateau and its impacts on environments in surrounding area[J]. Quaternary Sciences, 2001, 21(5):381-391.
李吉均, 方小敏. 青藏高原隆起与环境变化研究[J]. 科学通报, 1998, 43(15):1569-1574.
LI Jijun, FANG Xiaomin. Uplift of Qinghai Tibet Plateau and environmental change[J]. Chinese Science Bulletin, 1998, 43(15):1569-1574.
李吉均, 文世宣, 张青松, 等. 青藏高原隆起的时代、幅度和形式的探讨[J]. 中国科学, 1979, 9(6):608-616.
LI Jijun, WEN Shixuan, ZHANG Qingsong, et al. Discussion on the age, amplitude and form of the uplift of the Qinghai Tibet Plateau[J]. Scientia Sinica, 1979, 9(6):608-616.
李吉均, 方小敏, 马海洲, 等. 晚新生代黄河上游地貌演化与青藏高原隆起[J]. 中国科学(D辑), 1996, 26(4):316-322.
LI Jijun, FANG Xiaomin, MA Haizhou, et al. Geomorphological evolution of the upper reaches of the Yellow River in the late Cenozoic and uplift of the Qinghai Tibet Plateau[J]. Scientia Sinica Terrae, 1996, 26(4):316-322.
李吉均, 张军, 宋春晖, 等. 陇中盆地灞河期地层的发现及意义[J]. 中国科学(D辑:地球科学), 2007, 37(1):52-60.
LI Jijun, ZHANG Jun, SONG Chunhui, et al. Miocene Bahean stratigraphy in the Longzhong Basin, northern central China and its implications in environmental change[J]. Scientia Sinica Terrae, 2007, 37(1):52-60.
李启来. 西藏尼玛地区古近系牛堡组古湖平面变化的沉积地球化学记录[D]. 成都:成都理工大学, 2017.
LI Qilai. Sedimentary geochemistry and lake-level changes from the Paleogene Niubao Formation of Nima area, Tibet[D]. Chengdu:Chengdu University of Technology, 2017.
刘传联. 东营凹陷沙河街组湖相碳酸盐岩碳氧同位素组分及其古湖泊学意义[J]. 沉积学报, 1998, 16(3):109-114.
LIU Chuanlian. Carbon and Oxygen isotopic compositions of lacustrine Carbonates of the Shahejie formation in the Dongying depression and their paleolimnological significance[J]. Acta Sedimentologica Sinica, 1998, 16(3):109-114.
刘传联, 赵泉鸿, 汪品先. 湖相碳酸盐氧碳同位素的相关性与生油古湖泊类型[J]. 地球化学, 2001, 30(4):363-367.
LIU Chuanlian, ZHAO Quanhong, WANG Pinxian. Correlation between carbon and oxygen isotopic ratios of lacustrine carbonates and types of oil-producing paleolakes[J]. Geochimica, 2001, 30(4):363-367.
刘春莲, Franz T Fürsich, 白雁, 等. 三水盆地古近系湖相沉积岩的氧、碳同位素地球化学记录及其环境意义[J]. 沉积学报, 2004, 22(1):36-40.
LIU Chunlian, Franz T Fürsich, BAI Yan, et al. Palaeogene environmental changes deduced from stable isotopic data from bulk Carbonates in the Sanshui Basin, South China[J]. Acta Sedimentologica Sinica, 2004, 22(1):36-40.
骆满生, 吕欣蕾, 张克信, 等. 青海循化盆地中新世中期-上新世早期介形类组合及其地质意义[J]. 微体古生物学报, 2010, 27(2):125-134.
LUO Mansheng, LÜ Xinlei, ZHANG Kexin, et al. Middle Miocene-Early Pliocene ostracod assemblages in the Xunhua Basin, Qinghai and their geological significance[J]. Acta Micropalaeontologica Sinica, 2010, 27(2):125-134.
马玉贞, 李吉均, 方小敏. 临夏地区30.6-5.0Ma红层孢粉植物群与气候演化记录[J]. 科学通报, 1998, 43(3):301-304.
MA Yuzhen, LI Jijun, FANG Xiaomin, et al. Palynoflora and climatic evolution records of the red beds in Linxia area during 30.6-5.0Ma[J]. Chinese Science Bulletin, 1998, 43(3):301-304.
孟庆任. 秦岭的由来[J]. 中国科学(D辑):地球科学, 2017, 47(4):412-420.
MENG Qingren. Origin of the Qinling Mountains[J]. Scientia Sinica Terrae, 2017, 47(4):412-420.
宋春晖, 方小敏, 李吉均, 等. 青海贵德盆地晚新生代沉积演化与青藏高原北部隆升[J]. 地质论评, 2003, 49(4):337-346.
SONG Chunhui, FANG Xiaomin, LI Jijun, et al. Sedimentary evolution of the Guide Basin in the Late Cenozoic and the uplift of the Qinghai-Tibet Plateau[J]. Geological Review, 2003, 49(4):337-346.
宋春晖, 鲁新川, 邢强, 等.临夏盆地晚新生代沉积物元素特征与古气候变迁[J]. 沉积学报, 2007, 25(3):409-416.
SONG Chunhui, LU Xinchuan, XING Qiang, et al. Late Cenozoic element characters and palaeoclimatic Change of the Lacustrine sediments in Linxia Basin, China[J]. Acta Sedimentologica Sinica, 2007, 25(3):409-416.
孙秀玉, 赵英娘, 何卓生. 青海西宁-民和盆地渐新世至中新世孢粉组合[J]. 地质论评, 1984, 30(3):12-21+108.
SUN Xiuyu, ZHAO Yingniang, HE Zhuosheng. The Oligocene-Miocene palynological assemblages from the Xining-Minhe Basin Qinghai province[J]. Geological Review, 1984, 30(3):12-21+108.
王志才. 青藏高原东北缘新生代以来的构造变形特征与时空演化:以陇西-武山地区为例[D]. 北京:中国地震局地质研究所, 2004.
WANG Zhicai. Cenozoic tectonic deformation and evolution of the Northeastern margin of the Tibetan Plateau:A case study of Longxi-Wushan region[D]. Beijing:Institute of Geology, Seismological Bureau of China, 2004.
王粉丽, 洪汉烈, 殷科, 等. 循化盆地中新世沉积物粘土矿物的特征及其古气候指示[J]. 地球科学(中国地质大学学报), 2010, 35(5):828-838.
WANG Fenli, HONG Hanlie, YIN Ke, et al. Clay mineralogy and its paleoclimatic indicator of the Miocene sediments of Xunhua Basin[J]. Earth Science-Journal of China University of Geosciences, 2010, 35(5):828-838.
王建力, 方小敏. 临夏盆地晚中新世以来的风沙沉积及环境意义[J]. 地理科学, 2000, 20(3):259-263.
WANG Jianli, FANG Xiaomin. Eolian sand deposition and its environmental significance in Linxia Basin since middle Miocene[J]. Scientia Geograohica Sinica, 2000, 20(3):259-263.
胥彪. 晚中新世西宁盆地沉积演化及环境变化[D]. 北京:中国地质大学, 2017.
XU Biao. Late Miocene sedimentary evolution and environmental changes in Xining Basin[D]. Beijing:China University of Geosciences, 2017.
叶荷, 张克信, 季军良, 等. 青海循化盆地23.1~5.0Ma沉积地层中常量、微量元素组成特征及其古气候演变[J]. 地球科学(中国地质大学学报), 2010, 35(5):811-820.
YE He, ZHANG Kexin, JI Junliang, et al. Major and trace element characters of the sediments and paleoclimatic evolvement during about 23.1-5.0Ma in Xunhua Basin, Qinghai[J]. Earth Science-Journal of China University of Geosciences, 2010, 35(5):811-820.
余俊清, 王小燕, 李军, 等. 湖泊沉积有机碳同位素与环境变化的研究进展[J]. 湖泊科学, 2001, 13(1):72-78.
YU Junqing, WANG Xiaoyan, LI Jun, et al. Paleoenvironmental interpretations on organic Carbon isotopic records from lake sediments:a critique[J]. Journal of Lake Sciences, 2001, 13(1):72-78.
袁道阳. 青藏高原东北缘晚新生代以来的构造变形特征与时空演化[D]. 北京:中国地震局地质研究所, 2003.
YUAN Daoyang. Tectonic deformation features and space-time evolution in Northeastern margin of the Qinghai-Tibetan Plateau since the late Cenozoic time[D]. Beijing:Institute of Geology, Seismological Bureau of China, 2003.
张秀莲. 碳酸盐岩中氧、碳稳定同位素与古盐度、古水温的关系[J]. 沉积学报, 1985, 3(4):17-30.
ZHANG Xiulian. Relationship between stable oxygen and carbon isotopes in carbonate rocks and paleosalinity and paleotemperature[J]. Acta Sedimentologica Sinica, 1985, 3(4):17-30.
Bertrang P, Lallier V E, Boussafir M. Enhancement of accumulation and anoxic degradation of organic matter controlled by cyclic productivity:a model[J]. Organic Geochemistry, 1994, 22(3-5):511-520.
Gasse F, Fontes J C, Plaziat J C, et al. Biological remains, geochemistry and stable isotopes for the reconstruction of environmental and hydrological changes in the Holocene lakes from North Sahara[J].Palaeogeography, Palaeoclimatology, Palaeoecology, 1987, 60:1-46.
Guo Z T, Ruddiman W F, Hao Q Z, et al. Onset of Asian desertification by 22Myr ago inferred from loess deposits in China[J]. Nature, 2002, 416:159-163.
Keith M L, Weber J N. Carbon and oxygen isotopic composition of selected limestones and fossils[J].Geochimica et Cosmochimica Acta, 1964, 28(10-11):1787-1816.
Lease R O, Burbank D W, Hough B, et al. Pulsed Miocene range growth in northeastern Tibet:Insights fromXunhua Basin magnetostratigraphy and provenance[J]. Geological Society of America Bulletin, 2012, 124(5-6):657-677.
Li JJ, Zhang J, Song C H, et al. Miocene Bahean stratigraphy in the Longzhong Basin, northern central China and its implications in environmental change[J]. Science in China Series D Earth Sciences, 2006, 49(12):1270-1279.
Meyer B, Tapponnier P, Bourjot L, et al. Crustal thickening in Gansu-Qinghai, lithospheric mantle subduction, and oblique, strike-slip controlled growth of the Tibet Plateau[J]. Geophysical Journal of the Royal Astronomical Society, 2010, 135(1):1-47.
Molnar P H, Tapponnier P. Cenozoic tectonics of Asia:Effects of a continental collision[J]. Nature, 1975, 189(4201):419-426.
Pei ZZ, Molnar P, Downs W R. Increased sedimentation rates and grain sizes 2-4 Myr ago due to the influence of climate change on erosion rates[J]. Nature, 2001, 410(6831):891-897.
Talbol M R, Kells K.Paleolimnlogical signatures from carbon and oxygen isotopic ratio in carbonates from organic carbon rich lacustrine sediments[J]. AAPG Menoir, 1990, 50(6):61-76.
Tapponnier P, Xu Z, Roger F, et al. Oblique stepwise rise and growth of the Tibet Plateau[J]. Science, 2001, 294(5547):1671-1677.
Zachos J, Pagani M, Sloan L, et al. Trends, rhythms, and aberrations in global climate 65Ma to present[J]. Science, 2001, 292(5517):686-693.
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