台湾浊水溪辫状河与扇三角洲沉积特征分析

来源 :2015全国沉积学大会 | 被引量 : 0次 | 上传用户:cqwzhy1990
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台湾是非常年轻的造山带,是近500Ma 年来由欧亚板块、冲绳板块和菲律宾板块挤压而不断隆升的岛屿.构造活动非常活动,地震时常发生,处在东亚季风带,同时又受到台风强烈影响等,使得台湾成全球产沙量最高的区域.境内河流源短、坡降大,受台风强降雨影响显著,常形成泥石流和高悬沙浓度的洪水,塑造了特色的山地型河流沉积地貌.
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依据喀木斯特地区钻、测井资料,编制、分析单井沉积相图、沉积断面图、砂砾岩体等厚图、沉积相平面图,认为研究区侏罗系下统八道湾组沉积环境为辫状河三角洲-湖泊-曲流河三角洲沉积;三工河组沉积环境为辫状河-滨浅湖沉积;中统西山窑组沉积环境为辫状河三角洲相;中上统石树沟群沉积环境为辫状河-曲流河沉积。
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