[1]吴庆龙.金沙江大具盆地中的巨大洪水沉积[J].南京师范大学学报(自然科学版),2019,42(04):118-123.[doi:10.3969/j.issn.1001-4616.2019.04.017]
　Wu Qinglong.The Sediments of Megafloods in the Daju Baisin of the Yangtze River[J].Journal of Nanjing Normal University(Natural Science Edition),2019,42(04):118-123.[doi:10.3969/j.issn.1001-4616.2019.04.017]
点击复制

金沙江大具盆地中的巨大洪水沉积()
分享到：

《南京师范大学学报》（自然科学版）[ISSN:1001-4616/CN:32-1239/N]

卷:
第42卷
期数:
2019年04期
页码:
118-123
栏目:
·地理学·
出版日期:
2019-12-30

文章信息/Info

Title:
The Sediments of Megafloods in the Daju Baisin of the Yangtze River
文章编号:
1001-4616(2019)04-0118-06
作者:
吴庆龙1; 2; 3
(1.虚拟地理环境教育部重点实验室(南京师范大学),江苏 南京 210023)(2.江苏省地理环境演化国家重点实验室培育建设点,江苏 南京 210023)(3.江苏省地理信息资源开发与利用协同创新中心,江苏 南京 210023)
Author(s):
Wu Qinglong1; 2; 3
(1.School of Geography,Nanjing Normal University,Nanjing 210023,China)(2.Key Laboratory of Virtual Geographic Environment(Nanjing Normal University),Ministry of Education,Nanjing 210023,China)(3.Jiangsu Center for Collaborative Innovation in Geographica
关键词:
金沙江; 大具盆地; 特殊碎屑堆积; 溃决洪水; 巨大洪水; 虎跳峡
Keywords:
the Yangtze River; the Daju Baisin; special clastic sediments; outburst flood; megaflood; Tiger-leaping Gorge
分类号:
P512.31
DOI:
10.3969/j.issn.1001-4616.2019.04.017
文献标志码:
A
摘要:
金沙江虎跳峡下游的大具盆地填充着一套以棱角、次棱角状灰岩、大理岩碎屑为主的沉积,其最大厚度可达100～200 m.这套碎屑堆积的粒度、分选性、层理等特征在空间上存在很大变化.过去的研究者将它们看作是冰碛物、冰水沉积甚至湖泊沉积.然而,大具盆地周围的山岳冰川在第四纪冰期并不能下降至海拔仅1 500～1 700 m的大具盆地,而冰水和湖泊的水动力条件也无法形成这样的碎屑沉积.中国文明起源时期黄河积石峡溃决大洪水沉积证据的发现和确认为理解大具盆地这套特殊碎屑的成因提供了新思路.沉积特征的比较分析表明,大具盆地中
Abstract:
A suite of special sediments are distributed in the Daju Basin,just downstream the Tiger-leaping Gorge of the Yangtze River. They mainly consist of angular and subangular lime and marble clasts with thicknesses of up to more than 200 m and with heights of more than 250 m above river level. Some researches took them as moraine,aqueoglacial deposits,or lake sediments. However,the glaciers in glacial period could not have descended to the Daju Baisin,the flows melt from mountain glacials should have deposited rounded and subrounded gravels due to abrasion during transportation,and the lake environment should have formed typical lacustrine sediments consisting of silt and clay. The discovery of a massive outburst flood at～1920 BCE in the Yellow River valley provides a new enlightment to comprehend the origin of the special deposits in the Daju Baisin. Detailed observations show that the clastic deposits in the Daju Baisin share very similar characteristics with the identified sediments formed by a large outburst flood occurred at the dawn of Chinese civilization in the Yellow River valley. Thus,it could be concluded that the massive clastic sediments filled in the Daju Baisn should have been deposited by mega outburst floods from giant landslide dams in the Tiger-leaping Gorge that we never imagined.

参考文献/References:

[1] 沈玉昌. 长江上游河谷地貌[M]. 北京:科学出版社,1965:47-48.
[2]赵希涛,张永双,胡道功,等. 云南丽江地区大具盆地早更新世金沙江砾石层的发现及其意义[J]. 地质通报,2006,25(12):1381-1386.
[3]KONG P,NA C,FINK D,et al. Moraine dam related to late Quaternary glaciation in the Yulong Mountains,southwest China,and impacts on the Jinsha River[J]. Quaternary science reviews,2009,28,3224-3235.
[4]郑本兴. 云南玉龙雪山第四纪冰期与冰川演化模式[J]. 冰川冻土,2000,22(1):53-61.
[5]WU Q L,ZHAO Z J,LIU L,et al. Outburst flood at 1920 BCE supports historicity of China’s Great Flood and the Xia dynasty[J]. Science,2016,353(6299):579-582.
[6]吴庆龙,张培震,张会平,等. 黄河上游积石峡古地震堰塞溃决事件与喇家遗址异常古洪水灾害[J]. 中国科学:地球科学,2009(8):1148-1159.
[7]彭建兵,毛彦龙,杜东菊. 黄河积石峡水电站水库滑坡工程地质研究[M]. 西安:陕西科学技术出版社,1997.
[8]陈智梁,孙志民,Royden L H,等. 四川泸定昔格达组的堰塞湖成因及其意义[J]. 第四纪研究,2004,24(6):614-620.
[9]王兰生,杨立铮,王小群,等. 岷江叠溪古堰塞湖的发现[J]. 成都理工大学学报(自然科学版),2005,32(1):1-11.
[10]周洪福,韦玉婷,聂德新. 黄河上游戈龙布滑坡高速下滑成因机制及堵江分析[J]. 工程地质学报,2009,17(4):483-488.
[11]LIU W,LAI Z,HU K,et al. Age and extent of a giant glacial-dammed lake at Yarlung Tsangpo gorge in the Tibetan Plateau[J]. Geomorphology,2015,246:370-376.
[12]叶茂林. 青海民和喇家史前遗址的发掘[J]. 考古,2002(7):3-5.
[13]夏正楷,杨晓燕,叶茂林. 青海喇家遗址史前灾难事件[J]. 科学通报,2003,48(11):1200-1204.
[14]杨晓燕. 基于不同空间尺度的环境考古研究[D]. 北京:北京大学,2013.
[15]CARLING P A. Freshwater megaflood sedimentation:what can we learn about generic processes?[J]. Earth-science reviews,2013,125,87-113.
[16]崔之久,张梅,崔鹏,等. 初论堰塞湖溃坝沉积相特征[J]. 山地学报,2015,33(2):129-140.

相似文献/References:

[1]吴庆龙.金沙江、雅鲁藏布江发现史前巨大洪水事件[J].南京师范大学学报(自然科学版),2019,42(03):163.[doi:10.3969/j.issn.1001-4616.2019.03.022]

备注/Memo

备注/Memo:
收稿日期:2019-05-20.
基金项目:江苏高校优势学科建设工程项目、中国地质调查项目(121201102000150009-16)、国家自然科学基金项目(41771155、41130210、41271017、 41001010、41301010、41271074、41271082).
通讯联系人:吴庆龙,教授,研究方向:地貌学、地质考古学. E-mail:w_wendell@163.com
更新日期/Last Update: 2019-12-31