美国西部地貌的演变史
文章来源:未知 文章作者:enread 发布时间:2015-12-09 06:07 字体: [ ]  进入论坛
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The faulted alluvial1 fans near Badwater in Death Valley are amongst the most visited and classic landforms in the U.S. New mapping and dating of these landforms, presented in this open-access study by Kurt Frankel and colleagues, help to determine the timing2 of past earthquakes and how tectonic deformation3 is distributed across the western U.S. This in turn provides important data for seismic4 hazard mitigation and for understanding how the great landscapes of the western U.S. have evolved over recent geologic5 time. Death Valley constitutes one of the most dramatic landscapes in North America, and it is famous for its faulted mountain fronts, spectacular alluvial fans, and extensive saline playa. Moreover, the valley is the type example of a pull-apart basin, which is controlled by the northern Death Valley-Fish Lake Valley fault zone, the Black Mountains fault zone, and the southern Death Valley fault zone. These three fault zones make up the Holocene fault zones of the Death Valley fault system. This Death Valley pull-apart often provides an analog6 for the evolution, including stress transfer and depositional systems, in other tectonically active transtensional regimes, such as the Dead Sea, East Africa, and Alpine7 fault of New Zealand.
 
FEATURED ARTICLE Timing and rates of Holocene normal faulting along the Black Mountains fault zone, Death Valley, USA K.L. Frankel et al., School of Earth And Atmospheric8 Sciences, Georgia Institute of Technology, Atlanta, Georgia 30332, USA. This article is OPEN ACCESS online at http://dx.doi.org/10.1130/L464.1.
 
Other recently published Lithosphere9 articles are highlighted below:
 
Precollisional development and Cenozoic evolution of the Southalpine retrobelt (European Alps) S. Zanchetta et al., Dipartimento di Scienze dell'Ambiente e del Territorio e di Scienze della Terra, Università degli Studi di Milano Bicocca, Piazza10 della Scienza 1, Milano 20126, Italy. This paper is online at http://dx.doi.org/10.1130/L466.1.


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1 alluvial ALxyp     
adj.冲积的;淤积的
参考例句:
  • Alluvial soils usually grow the best crops.淤积土壤通常能长出最好的庄稼。
  • A usually triangular alluvial deposit at the mouth of a river.三角洲河口常见的三角形沉淀淤积地带。
2 timing rgUzGC     
n.时间安排,时间选择
参考例句:
  • The timing of the meeting is not convenient.会议的时间安排不合适。
  • The timing of our statement is very opportune.我们发表声明选择的时机很恰当。
3 deformation 59ryp     
n.形状损坏;变形;畸形
参考例句:
  • The deformation frequencies are not sufficiently distinctive.其变形频率不是十分明显的。
  • The calculated deformation is almost equal to the real situation by measurement.经检测,计算变形量与实际情况基本一致。
4 seismic SskyM     
a.地震的,地震强度的
参考例句:
  • Earthquakes produce two types of seismic waves.地震产生两种地震波。
  • The latest seismic activity was also felt in northern Kenya.肯尼亚北部也感觉到了最近的地震活动。
5 geologic dg3x9     
adj.地质的
参考例句:
  • The Red Sea is a geologic continuation of the valley.红海就是一个峡谷在地质上的继续发展。
  • Delineation of channels is the first step of geologic evaluation.勾划河道的轮廓是地质解译的第一步。
6 analog yLDyQ     
n.类似物,模拟
参考例句:
  • The analog signal contains high-frequency video information,which helps make up the picture.模拟信号包括有助于构成图像的高频视频信息。
  • The analog computer measures continuously,without proceeding step by step.模拟计算机不是一步一步地进行,而是连续地进行量度。
7 alpine ozCz0j     
adj.高山的;n.高山植物
参考例句:
  • Alpine flowers are abundant there.那里有很多高山地带的花。
  • Its main attractions are alpine lakes and waterfalls .它以高山湖泊和瀑布群为主要特色。
8 atmospheric 6eayR     
adj.大气的,空气的;大气层的;大气所引起的
参考例句:
  • Sea surface temperatures and atmospheric circulation are strongly coupled.海洋表面温度与大气环流是密切相关的。
  • Clouds return radiant energy to the surface primarily via the atmospheric window.云主要通过大气窗区向地表辐射能量。
9 lithosphere P02x8     
n.陆界,岩石圈
参考例句:
  • The hydrosphere and the lithosphere together form the Earth's surface.水圈与岩石圈一起形成地球的表面。
  • They slide on a more yielding layer at the base of lithosphere.它们在岩石圈底部更柔软的一层滑动。
10 piazza UNVx1     
n.广场;走廊
参考例句:
  • Siena's main piazza was one of the sights of Italy.锡耶纳的主要广场是意大利的名胜之一。
  • They walked out of the cafeteria,and across the piazzadj.他们走出自助餐厅,穿过广场。
TAG标签: death valley landscapes
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