%0 Journal Article
%T Relationship between the Formation of the First Bent of Changjiang River and the Magmatic Activity in Laojunshan District<br>滇西北老君山地区岩浆活动与 长江第一弯形成的关系
%A ZENG PushengInstitute of Minera Resources
%A Chinese Academy of Geoogical Sciences
%A Beijing
%A China
%A <br>曾普胜
%J 地理学报
%D 2002
%I 
%X Based on field observations, the author proposes a new understanding on the formation of theFirst Bent of the Changjiang River. It is the first time to study the relationship between the formation of theFirst Bent of the Changjiang River and Eocene magmatic activity, suggesting that the First Bent of theChangjiang River is the result from choking of the strong magma activity in Eocene. As a result, theupstream of the river became a natural reservoir, with channel bursting into breach between Mt. Yulong andMt. Haba, making Jinshajiang River run eastward. At the same time, the plateau uplift and the drasticdissection of river channel led to the formation of the Tiger Leaping Gorge. Taking Mt. Yulong as a base,the magnitude of uplifting in the study area (located in the eastern of the Tibetan Plateau) is calculated, withthe magnitude being 3300 m from Eocene to Pliocene, adding 700 m since Pleistocene, totaling 4000 m orso.
%K magmatic activity
%K choking channel
%K Jinshajiang River
%K bursting
%K Laojunshan district
%K the FirstBent of the Changjiang River<br>岩浆活动
%K 河道阻塞
%K 金沙江
%K 决口
%K 长江
%K 云南
%K 高原隆升
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=869B153A4C6B5B85&jid=F7B5B947C24B9D649491012214E4BEF4&aid=5EAB92F8D6B8ABF5&yid=C3ACC247184A22C1&vid=11B4E5CC8CDD3201&iid=38B194292C032A66&sid=160561E9A96393DE&eid=377D325742940769&journal_id=0375-5444&journal_name=地理学报&referenced_num=8&reference_num=55