搜索结果: 1-15 共查到“国际动态 沉积学”相关记录90条 . 查询时间(1.656 秒)
地球物理方法助力查明成都平原第四系结构（图）
地球物理 高密度电阻率 国际学术期刊
2023/3/14
同构造沉积物记录了活动断褶带的生长过程。龙门山位于青藏高原东缘，海拔高于四川盆地约4000米，是典型的活动汇聚山脉，调节了晚新生代以来高原的东向扩展。然而，龙门山的形成机制还存在争议，这主要是来自于对两类端元模型的不同认识，即地壳断裂与缩短作用和中下地壳流。
近日，实验室骨干成员葛智渊教授领衔，与挪威卑尔根大学的合作研究在浊流沉积领域取得重大学术进展，研究成果于2022年1月19日在国际顶级综合期刊《Science Advances》在线发表。葛智渊教授为该项研究的第一作者兼通讯作者。
Ancient Maya reservoirs contained toxic pollution（图）
Ancient Maya reservoirs contained toxic pollution
2020/7/17
Findings from research conducted by a University of Cincinnati team suggest that droughts in the ninth century along with pollution of reservoirs likely contributed to the depopulation and e...
An ancient desert covered in sand dunes as far as the eye could see, where dinosaurs and small mammals once roamed, may have been the real Jurassic Park. Today, the Navajo Sandstone, as it's called, i...
Carbon hides in sediment,keeping oxygen in atmosphere（图）
Carbon hides sediment keeping oxygen atmosphere
2019/10/28
A new study by researchers at the Woods Hole Oceanographic Institution and Harvard University may help settle a long-standing question: how do small amounts of organic carbon become locked away in roc...
Scientists set sail on expedition to investigate 'Iceberg Alley' off Antarctica（图）
Scientists set expedition investigate Iceberg Alley Antarctica
2019/11/22
The 5.4 million-square-mile Antarctic Ice Sheet is the greatest mass of fresh water on Earth. If it all were to melt, it would raise global sea levels some 220 feet. Searching for answers to how fast ...
Radioactivity From Oil And Gas Wastewater Persists In Pennsylvania Stream Sediments（图）
Radioactivity Oil And Gas Wastewater Pennsylvania Stream Sediments
2018/2/1
More than seven years after Pennsylvania officials requested that the disposal of radium-laden fracking wastewater into surface waters be restricted, a new Duke University study finds that high levels...
月球内部据断“水分含量惊人”
美国 月球 水
2017/7/27
曾被认为干燥的月球，内部可能含有大量的水。这是美国科学家借助卫星数据，分析月球上古代火山沉积物后得出的最新结论。
美国布朗大学研究人员在新一期英国《自然·地球科学》杂志上报告说，月球表面数量众多的火山沉积物里含有“异常高含量的水”。这进一步显示，月幔中可能也“水分含量惊人”。
美国爱达荷州的中中新世Clarkia古湖沉积是著名的新生代化石库，自上世纪70年代以来一直是国际上古生物学、埋藏学、地质学等研究的热点之一。其下部非氧化层（Unit 2）中超常的保存了丰富的陆相动植物化石，叶片化石甚至还保留着原始的颜色和叶片亚显微结构，而上部氧化层（Unit 5）中化石保存质量相对较差，主要以印痕化石为主。那么，是什么因素终止了Clarkia化石库的超常保存？为何鱼类化石聚集在仅...
A history of snowfall on Greenland,hidden in ancient leaf waxes
history of snowfall Greenland ancient leaf waxes
2016/5/31
The history of Greenland’s snowfall is chronicled in an unlikely place: the remains of aquatic plants that died long ago, collecting at the bottom of lakes in horizontal layers that document the passi...
Sediment buried in Oregon Coast Range points to a frosty past
Sediment buried Oregon Coast Range points frosty past
2015/12/7
Lush greenery rich in Douglas fir and hemlock trees covers the Triangle Lake valley of the Oregon Coast Range. Today, however, geologists across the country are more focused on sediment samples dating...
Nanoparticles accumulate quickly in wetland sediment
wetland sediment Nanoparticles accumulate
2014/10/9
A Duke University team has found that nanoparticles called single-walled carbon nanotubes accumulate quickly in the bottom sediments of an experimental wetland setting, an action they say could indire...
国际沉积学家协会2009年220期时事通讯（IAS Newsletter issue 220）。
国际沉积学家协会2007年209期时事通讯（IAS Newsletter issue 209）。