雅思阅读：Amazon River shaped by see-saw tilt of continent
http://en.jybest.cn 网络 2014-03-12 大 中 小
特别提醒：科学填报志愿比取得好成绩更加重要。考试结束了，尽快估分选大学、确定志愿吧。请点击这里，帮你解决!
雅思阅读：Amazon River shaped by see-saw tilt of continent
SOUTH AMERICA'S AMAZON RIVER Basin was a vast wetland for millions of years. That was until tectonic processes deep in the Earth transformed it into the world's largest drainage system, new research suggests.
Geoscientists from the University of Sydney and the California Institute of Technology believe a process called 'continental tilting', which began about 30 million years ago and continued for about 16 million years, tipped South America like a see-saw and drained its wetlands.
The event, funnelled water over 6400 km east to the Atlantic Ocean in what the team describes as the world's largest water slide. "What we're describing involves the whole continent," lead author Grace Shephard told Australian Geographic. "This tilting led to the formation of the Amazon River as we know it today."
考试培训小助手
本科留学qq:436560382
研究生留学qq:437946603
免责声明：
① 凡本站注明“稿件来源：中国教育在线”的所有文字、图片和音视频稿件，版权均属本网所有，任何媒体、网站或个人未经本网协议授权不得转载、链接、转贴或以其他方式复制发表。已经本站协议授权的媒体、网站，在下载使用时必须注明“稿件来源：中国教育在线”，违者本站将依法追究责任。
② 本站注明稿件来源为其他媒体的文/图等稿件均为转载稿，本站转载出于非商业性的教育和科研之目的，并不意味着赞同其观点或证实其内容的真实性。如转载稿涉及版权等问题，请作者在两周内速来电或来函联系。
