珠江口盆地白云凹陷珠江组深水牵引流沉积特征及其地质意义
Deep-water tractive deposition in Zhujiang formation Baiyun sag, Zhujiang River Mouth Basin and its geological implications
-
摘要: 研究深水牵引流对古大洋环流重建、陆坡位置判断及沉积矿产和能源资源勘探具有重要意义。珠江口盆地白云凹陷中新统珠江组取心段发育丰富的、与远洋低密度浊流和半远洋-远洋悬移沉积有明显区别的深水牵引流沉积,产物包括平行层理细砂岩、双泥岩纹层、双向交错层粉-细粒砂岩、波状层理和脉状层理灰质粉-细粒砂岩、波状层理和脉状层理抱球虫灰岩、透镜状沙纹层理粉砂岩等岩石相类型。珠江组深水牵引流沉积的发现具有重要地质意义,由其可以推测自渐新世末(23.8 Ma)白云凹陷陆架坡折带形成之后就开始存在沿着陆架坡折带活动的深水牵引流,并可能影响和改变沉积物的物质组成和区域分布,这将为南海北部古大洋洋流循环重建起到重要启示作用。Abstract: The research on deep-water tractive deposition is extremely valuable for the palaeooceanographical and palaeoclimatic reconstruction, slope deposition studies and mineral and energy exploration.The abundance of tractive structures developed in Zhujiang formation,Baiyun sag,Zhujiang Basin.They included parallel-bedding fine sandstone and doubling mud layers, bidirectional cross-bedding silty-fine sandstone,wavy-bedding and flaser-bedding globigerina limestone, wavy-bedding and flaser-bedding siltstone and silty-fine sandstone, lenticular-bedding silty-fine sandstones. They were totally different from pelagic turbidite and hemipelagite-pelagite. Combining with the depositional setting, the rich tractive structures were believed as deep-water deposition. The discovery of the deep-water tractive deposition in Miocene Zhujiang formation would be of great importance. It could be inferred that a deep-water current had existed since the formation of the shelf-break during late Oligocene(23.8 Ma) in Baiyun sag, which influenced and controlled the resources and depositional processes in Zhujiang formation. The tractive current may influence and change the composition and its distribution. And this would have a great enlightenment to the reconstruction of the palaeo-ocean circulation in the south china sea. Further studies will be needed.
-
Key words:
- Zhujiang River Mouth Basin /
- Baiyun sag /
- Miocene /
- Zhujiang formation /
- submarine fan /
- deep-water tractive current
-
SIMONIN D, TATNALL A R, ROBINSON I S. The automated detection and recognition of internal waves[J].International Journal of Remote Sensing, 2009, 30(17): 4581-4598. MICHELS Klaus S, ROGENHAGEN Johannes, KUHN Gerhard. Recognition of contour-current influence in mixed contourite-turbidite sequences of the western Weddell Sea, Antarctica(in Seismic expression of contourites and related deposits)[J].Marine Geophysical Researches, 2001, 22(5/6): 465-485. PEQUEGNAT W E. A deep bottom current on the Mississippi Cone[M]//CAPURRO L R A, REID J L,eds.Contributions on the Physical Oceanography of the Gulf of Mexico. Texas A&M University Oceanographic Studies, Houston: Gulf Publishing Co,1972:65-87. LIU Zhifei, TUO Shouting, COLIN Christophe, et al. Detrital fine-grained sediment contribution from Taiwan to the northern South China Sea and its relation to regional ocean circulation[J].Marine Geology, 2008, 255(3/4): 149-155. LIU Zhifei, COLIN Christophe, LI Xiajing, et al. Clay mineral distribution in surface sediments of the northeastern South China Sea and surrounding fluvial drainage basins: Source and transport[J]. Marine Geology, 2010, 277(1/4): 48-60. LVDMANN T, WONG H K, BERGLAR K.Upward flow of north Pacific deep Water in the northern South China Sea as deduced from the occurrence of drift sediments[J].Geophysical Research Letters,2005,32:L05614. SHANMUGAM G.Deep-marine tidal bottom currents and their reworked sands in modern and ancient submarine canyons [J]. Marine and Petroleum Geology, 2003,20: 471-491. 彭大钧,陈长民,庞雄,等.南海珠江口盆地深水扇系统的发现[J].石油学报,2004,25(5):17-23. 彭大钧,庞雄,陈长民,等.南海珠江深水扇系统的形成特征与控制因素[J].沉积学报,2006,24(1):10-18. 彭大钧,庞雄,黄先律,等.南海珠江深水扇系统的形成模式[J].石油学报,2007,28(5):7-11. 庞雄,陈长民,彭大钧,等.南海珠江深水扇系统及油气[M].北京: 科学出版社,2007. 庞雄,陈长民,彭大钧,等.南海珠江深水扇系统的层序地层学研究[J].地学前缘,2007,14(1):220-229. 李云,郑荣才,朱国金,等.珠江口盆地荔湾3-1气田珠江组深水扇沉积相分析[J].沉积学报,2011,29(4):665-676. 王昌勇,高博禹,朱国金,等. 珠江口盆地荔湾井区珠江组海底扇深水沉积标志[J].中国地质,2010,37(6): 1628-1637. 施和生,柳保军,颜承志,等.珠江口盆地白云—荔湾深水区油气成藏条件与勘探潜力[J].中国海上油气(地质).2010,22(6):369-374. 徐强,王英民,王丹,等.南海白云凹陷深水区渐新世—中新世断阶陆架坡折沉积过程响应[J].沉积学报,2010,28(5):906-916. 吴景富,徐强,祝彦贺.南海白云凹陷深水区渐新世—中新世陆架边缘三角洲形成及演化[J].地球科学——中国地质大学学报,2010,35(4):681-690. 钟建强.珠江口盆地的构造特征与盆地演化[J].湖洋湖沼通报,1994,1:1-8. 邵磊,李献华,汪品先,等.南海渐新世以来构造演化的沉积记录——ODP1148站深海沉积物中证据[J].地球科学进展,2004,19(4): 539-544. 李前裕, 郑洪波, 钟广法, 等.南海晚渐新世滑塌沉积指示的地质构造事件[J].地球科学——中国地质大学学报,2005,30(1):20-24. 庞雄, 陈长民, 邵磊,等.白云运动: 南海北部渐新统—中新统重大地质事件及其意义[J].地质论评, 2007,53(2): 145-151. REINHARD Hesse.Turbiditic and non-turbiditic mudstone of Cretaceous flysch sections of the East Alps and other basins[J]. Sedimentology, 1975, 22(3): 387-416. BOUMA A H.Sedimentology of Some Flysch Deposits: A Graphic Approach to Facies Interpretation[M]. Amsterdam: Elsevier, 1962: 168. PIPER D J W, BRISCO C D.Deep-water continental-margin sedimentation, DSDP Leg 28, Anterctica[R]//HAYES D E,et al.Initial Reports of the Deep Sea Drilling Project.28 Washington D C:U S Govt Printing Office, 1975: 727-755. GONTHIER E G, FAUGERES J C, STOW D A V.Contourite facies of the Faro Drift, Gulf of Cadiz[G]//STOW D AV, PIPER D J W.Fine-Grained Sediments: Deep-Water Processes and Facies.London: Geological Society of London Special Publication,1984,15:275-292. BOUMA A H, HOLLISTER C D.Deep ocean basin sedimentation[M]//MIDDLETON G V, BOUMA A H.Turbidites and Deep-Anabeim: Society of Economic Paleontologists and Mineralogists Pacific Section Short Course,1973:79-118. WANG L, SARENTHEIN M, ERLENKEUSER H, et al. East Asian monsoon climate during the late Pleistocene: high-resolution sediment records from the South China Sea[J]. Marine Geology, 1999, 156: 254-284. SUN Xiangjun, LI Xun, BEUG H J. Pollen distribution in hemipelagic surface sediments of the South China Sea and its relation to modern vegetation distribution[J]. Marine Geology, 1999, 156: 211-226. 邵磊,李学杰,耿建华,等.南海北部深水底流沉积作用[J].中国科学:D辑.地球科学,2007,37(6):771-777. 钟广法, 李前裕, 郝沪军,等.深水沉积物波及其在南海研究之现状[J].地球科学进展,2007,22(9):907-913. WAN Shiming, LI Anchun, CLIFT Peter D, et al.Increased contribution of terrigenous supply from Taiwan to the northern South China Sea since 3 Ma[J].Marine Geology, 2010, doi: 10.1016/j.margeo.2010.09.008. QU T, GIRTON J B, WHITEHEAD J A. Deepwater overflow through Luzon Strait[J]. Journal of Geophysical Research, 2006, 111: C01002, doi: 10.1029/2005JC003139. 张忠涛,秦成岗,高鹏,等.珠江口盆地白云凹陷北坡陆架坡折带地质特征及其油气勘探潜力[J].天然气工业,2011,31(5):39-44,116.
点击查看大图
计量
- 文章访问数: 1554
- HTML全文浏览量: 5
- PDF下载量: 1790
- 被引次数: 0