STRATIGRAPHIC SEQUENCE AND DEPOSITIONAL ENVIRONMENT SINCE MARINE ISOTOPE STAGE 6 IN THE CONTINENTAL SHELF OF THE WESTERN SOUTH YELLOW SEA: A CASE OF SYS-0804 CORE
-
摘要: 利用南黄海西部陆架区SYS-0804(孔深65.10 m,水深38 m)钻孔岩心和高分辨率的浅地层剖面资料,开展浅地层剖面解译、岩心沉积物的岩性特征和有孔虫组合综合分析以及AMS14C测年,并结合国内外最新研究成果开展对比研究,深入探讨南黄海西部陆架残留沉积区氧同位素6(MIS 6)期以来的地层、沉积环境演化以及与海平面变化的关系。研究结果表明,SYS-0804钻孔可划分为DU 1和DU 4~DU 8共6个沉积单元,对应于MIS 6、MIS 5、MIS 4、MIS 3和MIS 1早期的沉积地层,缺失DU 2和DU 3(包括MIS 2期以及MIS 3和MIS 1晚期的沉积)。MIS 6期(128~189 cal.kaBP)研究区为河流沉积(河漫滩)环境。MIS 5早期(115~128 cal.kaBP),研究区为近岸浅海沉积环境,发育海洋冷水团沉积。MIS 5中-晚期-MIS 4(60~115 cal.kaBP)研究区沉积环境从早期的滨海沉积向近岸浅海沉积以及河流沉积过渡。MIS 3早-中期(40~60 cal.kaBP),早期为滨海-浅海沉积,中期发育潮道充填沉积。MIS 2末期-MIS 1中期(11.5~13.0至0.7 cal.kaBP),研究区在11.5~13.0 cal.kaBP形成冰后期海侵界面,随后随着海平面的进一步上升,为滨海-浅海环境,发育冰后期海侵沉积序列。Abstract: A 65.10-m-long core (SYS-0804) recovered at water depth of 38 m from the relict sediment area off the South Yellow Sea (SYS), together with high resolution shallow seismic profiles, is analyzed on sedimentary characteristics and foraminiferal assemblages. Dated by AMS 14C and upon the basis of latest research results both at home and abroad, the stratigraphic and environmental evolution and sea level changes during the MIS 6 period are documented in this paper. Results show that the core SYS-0804 can be divided into 6 depositional units, i.e. the DU 1 and the DU4 to DU 8, deposited in the periods of MIS 6, MIS 5, MIS 4, MIS 3 and the early epoch of MIS 1 respectively. The DU 2 and DU 3 formed in MIS 2 and MIS 3 are absent, and the deposits formed in the later period of MIS 1 are also missing. During the period of MIS 6 (128~128 cal.kaBP), fluvial environment (mainly flood plain) dominated the research area. In the early stage of MIS 5 (115~128 cal.kaBP), a nearshore shallow sea environment characterized by cold water mass deposition was prevailing. The depositional units from middle MIS 5 to MIS 4 (60~115 cal.kaBP) are interpreted as the sediments deposited in littoral to inner sublittoral and fluvial environments. The sediments deposited in early to middle MIS 3(40~60 cal.kaBP), show a succession from coastal and shallow sea environments in the early stage, to tidal channels in the later stage. From the later period of MIS 2 to middle MIS 1 (11.5~13.0~0.7 cal.kaBP), it changed into a coast-shallow environment with a transgressional boundary at 11.5~13.0 cal.kaBP. covered by a transgressional sequence formed in the period of sea level rising.
-
Key words:
- South Yellow Sea /
- depositional environment /
- provenance
-
-
[1] Yang S Y, Jung H S, Lim D I, et al. A review on the provenance discrimination of sediments in the Yellow Sea[J]. Earth-Science Reviews, 2003, 63(1-2):93-120.
[2] 秦蕴珊. 黄海地质[M]. 北京:海洋出版社, 1989.[QIN Yunshan. Geology of the Yellow Sea[M].Beijing:China Ocean Press, 1989.]
[3] 杨子赓.南黄海陆架晚更新世以来的沉积及环境[J]. 海洋地质与第四纪地质, 1985, 5(4):1-19.
[YANG Zigeng. Sedimentology and environment in South Huanghai Sea shelf since late Pleistocene[J]. Marine Geology and Quaternary Geology. 1985, 5(4):1-19.]
[4] 杨子赓. Olduvai亚时以来南黄海沉积层序及古地理变迁[J]. 地质学报, 1993, 67(4):357-366.
[YANG Zigeng. The sedimentary sequence and palaeogeographic changes of the south Yellow sea since the Olduvai subchron[J]. Acta Geologica Sinica. 1993, 67(4):357-366.]
[5] 杨子赓,林和茂. 中国与邻区第四纪地层对比[J]. 海洋地质与第四纪地质, 1993. 13(3):1-14.
[YANG Zigeng, LIN Hemao. Proposal of Quaternary correlation of China and its adjacent areas[J]. Marine Geology and Quaternary Geology, 1993, 13(3):1-14.]
[6] 刘敏厚, 吴世迎, 王永吉.黄海晚第四纪沉积[M].北京:海洋出版社, 1987.[LIU Minhou, WU Shiying, WANG Yongji. Late Quaternary Deposit of the Yellow Sea[M]. Beijing:China Ocean Press, 1987.]
[7] 郑光膺. 南黄海QC2孔第四纪地层划分[J].海洋地质与第四纪地质,1988, 8(4):1-9.
[ZHENG Guangyin. Quaternary stratigraphic division of the hole QC2 in the southern Huanghai Sea[J]. Marine Geology and Quaternary Geology,1988,8(4):1-9].
[8] Liu J P, Milliman J D, Gao S. The Shandong mud wedge and post-glacial sediment accumulation in the Yellow Sea[J]. Geo-Marine Letters, 2001, 21(4):212-218.
[9] Liu J P, Milliman J D, Gao S, et al. Holocene development of the Yellow River's subaqueous delta, North Yellow Sea[J]. Marine Geology, 2004, 209(1-4):45-67.
[10] Yang Z S, Liu J P. A unique Yellow River-derived distal subaqueous delta in the Yellow Sea[J]. Marine Geology, 2007, 240(1-4):169-176.
[11] Liu J, Saito Y, Wang H, et al. Sedimentary evolution of the Holocene subaqueous clinoform off the Shandong Peninsula in the Yellow Sea[J]. Marine Geology, 2007, 236(3-4):165-187.
[12] Liu J, Saito Y, Kong X H, et al. Geochemical characteristics of sediment as indicators of post-glacial environmental changes off the Shandong Peninsula in the Yellow Sea[J]. Continental Shelf Research, 2009, 29(7):846-855.
[13] Liu J, Saito Y, Kong X H, et al. Delta development and channel incision during marine isotope stages 3 and 2 in the western South Yellow Sea[J]. Marine Geology, 2010, 278(1):54-76.
[14] 郑光膺.黄海第四纪地质[M].北京:科学出版,1991.[ZHENG Guangyin. Quaternary geology of the Yellow Sea[M]. Beijing:Science Press,1991.]
[15] Martinson D G, Pisias N G, Hays J D, et al. Age dating and the orbital theory of the ice ages:development of a high-resolution 0 to 300000-year chronostratigraphy[J]. Quaternary Research, 1987, 27(1):1-29.
[16] 刘振夏,Berne S, L'ATALANTE科学考察组.中更新世以来东海陆架的古环境[J].海洋地质与第四纪地质,1999, 19(2):1-10.
[LIU Zhenxia. Paleo-environment in the continental shelf of the east Chian sea since the Mid-Pleistocene[J].Marine Geology and Quaternary Geology, 1999, 19(2):1-10.]
[17] Liu Z X, Berne S, Saito Y,et al. Quaternary seismic stratigraphy and paleoenvironments on the continental shelf of the East China Sea[J]. Journal of Asian Earth Sciences, 2000, 18(4):441-452.
[18] Park Y A, Khim B K. Origin and dispersal of recent clay minerals in the Yellow Sea[J]. Marine Geology, 1992, 104(1-4):205-213.
[19] Uehara K, Saito Y. Late Quaternary evolution of the Yellow/East China Sea tidal regime and its impacts on sediments dispersal and seafloor morphology[J]. Sedimentary Geology, 2003, 162(1-2):25-38.
[20] Liu J P, Xu K H, Li A C, et al. Flux and fate of Yangtze River sediment delivered to the East China Sea[J]. Geomorphology, 2007, 85(3-4):208-224.
[21] Southon J, Kashgarian M, Fontugne M, et al. Marine reservoir corrections for the Indian Ocean and Southeast Asia[J]. Radiocarbon, 2002, 44:167-180.
[22] 汪品先, 闵秋宝,卞云华.南黄海西北部底质中有孔虫、介形虫分布规律及其地质意义[C]//海洋微体古生物论文集. 北京:海洋出版社, 1980:61-83.[WANG Pinxian, MIN Qiubao, BIAN Yunhua. Distribution and geological significance of the foraminifera and Ostracoda in the northwest of South Yellow Sea bottom sediment[C]//Marine micropaleontology proceedings. Beijing:China Ocean Press.1980:61
-83].
[23] 汪品先, 阎秋宝,卞云华. 黄海有孔虫,介形虫组合的初步研究[C]//海洋微体古生物论文集. 北京:海洋出版社, 1984:84-100.[WANG Pinxian, YAN Qiubao, BIAN Yunhua. Preliminary study on the foraminifera and Ostracoda of Yellow Sea[C]//Marine micropaleontology proceedings. Beijing:China Ocean Press,1984:84
-100.]
[24] 杨子赓,林和茂.对末次间冰期南黄海古冷水团沉积的探讨[J]. 海洋地质与第四纪地质, 1998, 18(1):47-58.
[YANG Zigeng, LIN Hemao. A study of the ancient cold water mass sediments in south yellow sea during last interglacial[J].Marine Geology and Quaternary Geology,1998,18(1):47-58.]
[25] 徐刚,刘健,温春等.南黄海西部陆架区表层沉积特征与物源分析[J]. 海洋地质与第四纪地质, 2010, 30(4):49-56.
[XU Gang, LIU Jian, WEN Chun. Sedimentary characteristics and provenance of surficial sediments in the west south Yellow sea[J]. Marine Geology and Quaternary Geology.2010.30(4):49-56.]
[26] 王振宇.南黄海海州湾外侧钙质结核特征及其成因的研究[J].上海地质, 1990, 2:9-19.[WANG Zhenyu. Characteristic and the origin of the calcareous concretions outside the Haizhou bay in south Yellow sea[J].Shanghai Geology,1990
,2:9-19]
[27] Chappell J, Omra A, Esat T, et al. Reconciliaion of late Quaternary sea levels derived from coral terraces at Huon Peninsula with deep sea oxygen isotope records[J]. Earth and Planetary Science Letters, 1996, 141(1-4):227-236.
-
计量
- 文章访问数: 1178
- PDF下载数: 9
- 施引文献: 0
下载: