GEOMORPHOLOGICAL CHARACTERS OF PALEO CHANNEL SYSTEMS IN LAST GLACIAL MAXIMUM IN THE WEST OF SOUTH YELLOW SEA SHELF
-
摘要: 以高分辨率浅地层地震剖面解译资料为基础,对南黄海西部陆架区埋藏古河谷体系进行地貌形态特征分析。结果表明,在南黄海西部陆架浅海区海底以下几米到十几米埋藏着末次冰期最盛期形成的两大树枝状古河道网,主干河道断面向海逐渐变宽、加深;研究区末次盛冰期古河道除了具有其他海域古河道的U形和V形特征外,还有W形、箱形(近似矩形)和倒梯形河道断面。复合式和双层(多层)河道以及不对称型河道断面形态也比较常见,反映了研究区末次盛冰期古河道具有复杂的断面形态组合形式。Abstract: Geomorphological characters of buried paleo-channel systems in the western South Yellow Sea are studied in this paper, based on the interpretation of high resolution seismic profiles. It is found that there are two complex dendritic drainage systems developed during the Last Glacial Maximum (LGM) on the continent shelf of the South Yellow Sea, shallowly buried several to tens of meters below the sea floor. Main paleo-channels are getting wider and deeper towards the sea. Excluding the U and V-shaped channels which are common in other areas, there are other types, such as W-shaped, boxlike (approximate rectangle) and inverse trapezoid channels. And compound, double (or multilayer) and asymmetry types are also common, indicating a complex paleo-channel system in LGM.
-
-
[1] Hanebuth,T J J. Sea-level changes on the Sunda Shelf during the last 50000 years. Ber. -Rep. 12,Inst. für Geowiss.,Universität Kiel,2000.
[2] Clark P U, Mix A C. Ice sheets and sea level of the Last Glacial Maximum[J]. Quat. Sci. Rev., 2002, 21:1-7.
[3] 耿秀山.中国东部陆架的海底古河系[J]. 海洋科学,1981(2):22-27.[GENG Xiushan. Paleo-river system on the Eastern shelf of China[J].Marine Sciences, 1981
(2):22-27.]
[4] 鲍才旺.珠江口陆架区埋藏古河道与古三角洲[J].海洋地质与第四纪地质,1995,15(2):25-34.
[BAO Caiwang. Buried ancient channels and deltas in the Zhujiang River mouth shelf area[J]. Marine Geology and Quaternary Geology, 1995, 15(2):25-34.]
[5] 寇养琦,杜德莉.南海北部陆架第四纪古河道的沉积特征[J].地质学报,1994,68(3):268-277.
[KOU Yangqi, DU Deli. Sedimentary features of shallow ancient river channels on the northern shelf of the South China Sea[J]. Acta Geologica Sinica, 1994, 68(3):268-277.]
[6] 秦蕴珊,李凡,唐宝珏,等.南黄海西部埋藏古河系[J].科学通报,1985(24):1887-1890.[QIN Yunshan, LI Fan, TANG Baojue, et al. Buried paleo-channel systems in the west of the South Yellow Sea[J]. Chinese Science Bulletin,1986
(24):1887-1890.]
[7] 李凡,于建军,姜秀珩,等.南黄海埋藏古河系研究[J].海洋与湖沼,1991,22(6):501-508.
[LI Fan, YU Jianjun, JIANG Xiuheng, et al. Study on buried paleo-channel system in the South Yellow Sea[J]. Oceanologia et Limnologia Sinica, 1991, 22(6):501-508.]
[8] Butenko J, Ye Y C, Milliman J D. Morphology, sediments and Late Quaternary history of the East China Sea[C]//In:Qingming J, Milliman J D, eds. Sedimentation on the Continental Shelf with Special Reference to the East China Sea[C]. Beijing:China Ocean Press, 1983:653-677.
[9] Milliman J D, QIN Yunshan, Park Y A. Sediments and sedimentary processes in the Yellow and East China Seas[C]//In:Taira A, Masuda F, eds. Sedimentary Facies in the Active Plate Margin[C]. Tokyo:Terra Scientific Publishing Company, 1989, 233-249.
[10] Liu Z X. Yangtze shoal a modern tidal sand sheet in the northwestern part of the East China Sea[J]. Marine Geology, 1997, 137:321-330.
[11] Saito Y, Katayama H, Ikehara K, et al. Transgressive and highstand systems tracts and post-glacial transgression, the East China Sea[J]. Sedimentary Geology, 1998, 122(1-4):217-232.
[12] 刘振夏,Berné S,L'ATALANTE科学考察组.东海陆架的古河道和古三角洲[J]. 海洋地质与第四纪地质,2000, 20(1):9-14.
[LIU Zhenxia, Berne S, L' ATALANTE Science Study Group. Paleochannels and paleodeltas in the continental shelf of the East China Sea[J]. Marine Geology and Quaternary Geology, 2000, 20(1):9-14.]
[13] LIU Z X, Berné S, Saito Y, et al. Quaternary seismic stratigraphy and paleo-environments on the continental shelf of the East China Sea[J]. Journal of Asian Earth Sciences, 2000, 18(4):441-452.
[14] Yoo D G, Lee C W, Kim S P, et al. Late Quaternary transgressive and highstand systems tracts in the northern East China Sea mid-shelf[J]. Marine Geology, 2002, 187:313-328.
[15] Bern S, Vagner P, Guichard F, et al. Pleistocene forced regressions and tidal sand ridges in the East China Sea[J]. Marine Geology, 2002, 188:293-315.
[16] [17] 李从先,张桂甲.下切古河谷高分辨率层序地层学研究的进展[J].地球科学进展,1996,11(2):216-220.
[LI Congxian, ZHANG Guijia. Progress on high resolution sequence stratigraphy in incised paleovalley[J]. Advance in Earth Sciences, 1996, 11(2):216-220.]
[18] 王明田,庄振业,葛淑兰,等. 辽东湾中北部浅层埋藏古河道沉积特征及对海上工程的影响[J]. 黄渤海海洋, 2000, 18(2):18-24.
[WANG Mingtian, ZHUANG Zhenye, GE Shulan, et al. Sediment characteristics of the shallow buried paleo-channels in the north-central Liaodong Bay and their negative effects on nautical engineering[J]. Journal of Oceanography of Huanghai & Bohai Seas, 2000, 18(2):18-24.]
[19] Schumm S A, Khan H R. Experimental study of channel patterns[J].Geol. Soc. Am. Bull, 1972, 83:1755-1770.
[20] Ashley GM, Wellner RW, Esker D, et al. Clastic sequence developed during the late Quaternary glacio-eustatic sea-level fluctuations on a passive margin:Example from the inner continental shelf near Barnegat Inlet, New Jersey[J]. Geological Society of America, Bulletin, 1991, 103:1607-1621.
[21] Suter J R, Berryhill H L Jr, Penland S. Late Quaternary sea-level fluctuations and depositional sequences, southwest Louisiana Continental Shelf[C]//In:Nummendal D, Pilkey O H, Howard J D, eds., Sea level Fluctuation and Coastal Evolution, SEPM, Special Publication, 1987,41:199-219.
[22] Liu Jian, Saito Yoshiki, Kong Xianghuai, et al. Delta development and channel incision during marine isotope stages 3 and 2 in the western South Yellow Sea.[J]. Marine Geology, 2010, 278:54-76.
[23] 李从先. 冰后期海面变动和河流-河口体系发育的阶段性[J]. 海洋学报,1992, 14(3):86-94.
[LI Congxian. Post Glacial sea-level fluctuations and estuary development stages[J]. Acta Oceanologica Sinica, 1992, 14(3):86-94.]
-
计量
- 文章访问数: 1466
- PDF下载数: 1
- 施引文献: 0
下载: