夷平面
- planation surface
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这种夷平面的切割深度超过100m时,有利于新砂矿的形成。
Such Planation surface with a cutting depth greater than 100 m is favourable for the formation of new gold placer .
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而另一方面,夷平面的定年仍是一个棘手的问题。
The dating of planation surface is still an intractable problem .
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野外地质地貌调查和对川西高原DEM的分析结果表明,川西高原存在两级夷平面和一级剥蚀面。
Field observation and analysis of the DEM of Western Sichuan Plateau indicate that , there are two planation surfaces and one erosion surface in Western Sichuan Plateau .
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基于野外考察和室内作图,可利用数学统计方法和3S技术进行夷平面的识别,这加强了夷平面研究的精确性、客观性和定量性。
Discrimination of planation surface is based on plotting and field investigation and by using statistical methods and " 3S " technique . It enhances the accurate , objective and quantitative analysis of planation surface .
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低起伏侵蚀面的DEM分析有利于定量揭示山脉夷平面分布,结合基岩地质等其他资料综合分析,可揭示侵蚀面的成因,揭示大地构造与地表过程相互关系是未来研究的主要目标之一。
The DEM analysis of low-relief erosion surface also helps to understand the distribution of planation surfaces in mountainous terrains . DEM analysis , combined with other data , is very useful tool to look into the relationship between tectonics and surficial processes .
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发现3个夷平面,计算出晚更新世以来测区隆升速度为1.58~1.8cm/a,上升逾460m。
According to three planation surfaces , the rate of uplift of the survey area have been calculated to be 1.58-1.8 cm / a since the Late Pleistocene and the area has risen more than 460 m.
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将岩溶盆地划分为谷地、台地、残丘、沟槽、浅洼5种三级地貌单元类型,东部发育3个水平岩溶带,第三水平岩溶带距夷平面70~85m。
This karst basin is divided into 5 types of palaeogeography units : mesa , remnant hillock , karren , groove and shallow depression . Three level leached zones are found , and the third zone is 70-85 m below the karst base level .
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最高海拔约1800m,在海拔350~1200m,有7级剥蚀夷平面,形态有山顶缓坡型、山坡肩膀型、谷底裂点型(占绝大多数)。
The elevation of the areas is generally from 350m to 1200m with the highest 1800m . There are seven levels of denudation planation surfaces , which are expressed as gentle slope hilltop , shoulder-shape hillside and valley bed nickpoint ( accounting for great proportion ) .
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夷平面理论研究与初步模拟
Preliminary Study on the Theory and Modeling of Planation Surface
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前期大地构造影响夷平面发育的时间和程度;
Pre-constrction affects the time and degree of the planation .
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文章还进行了夷平面三维显示和分析的初步探讨。
We also considered the 3D presentation and analysis of the planation surface .
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结果表明:该区现代河谷之上存在两级夷平面和一级剥夷面。
Two planation surfaces and one pediment in the study area were found .
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粤北地区夷平面的初步研究
Researches on the planation surfaces in North Guangdong
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岩溶夷平面演化与青藏高原隆升
Karst planation surface and the Qinghai-Xizang Plateau uplift
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滇西地区夷平面变形及其反映的第四纪构造运动
Deformation of planation surface in West Yunnan and its significance in Quaternary tectonic movement
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在国内,夷平面研究的“回春”是其一个主要的表现形式。
In China , a main response is the rejuvenation of planation surface researches .
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嵩山夷平面研究
Research on the planation surface of Songshan Mountain
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关于夷平面的科学问题&兼论青藏高原夷平面
On Problems of Planation Surface - A Discussion on the Planation Surface in Qinghai-Xizang Plateau
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岩性影响夷平面形成的过程和时间;
Lithology impacts the procedure and time .
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对于每一种变形类型并且用若干中国区域夷平面资料作为例子加以说明。
Every one of these deformational types is interpreted by using some Chinese regions as examples .
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夷平面与砂金矿
Planation Surface and Gold Placer
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区内断裂带、断陷盆地、夷平面及阶地十分发育。
Fracture zones , down-faulted basins and multi-level planation surfaces and terraces are well developed in the region .
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在第三纪,夷平面上的风化壳中的金经历了重要的次生富集作用;
During Tertiary period , the secondary enrichment happened to the gold in weathering crust of planation surface .
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侵蚀基准面是夷平面发育的终点站;磁流间断面类型的讨论
Erosion base level is the base line for it . The Discussion on the Types of Magnetic Discontinuous Face
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低夷平面分布高度为海拔1200~1500m,完成于上新世末;
The lower planation surface , 1200m to 1500m above sea level , was formed in the Late Pliocene .
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中昆仑山形成时代与隆升幅度&基于夷平面与磷灰石裂变径迹研究
The forming ages and uplift size of the middle Kunlun mountain-Based on study of plantation surface and apatite fission-track ages
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不同类型的夷平面有不同的形成过程,夷平作用的差异导致了夷平面类型的差异。
Different type of planation surface has different formation , the difference of planation results in the difference of planation surface .
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在晚白垩世&始新世夷平面基础上,由于断裂作用形成了贝加尔裂谷系。
The Baikal rift system was formed due to faulting on the late Cretaceous ? Eocene . Epoch planation surface base .
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依据夷平面的活动状态可分为活动面、休眠面、外来面和废止面;
According to active condition , it can be divided into active surface , dormant surface , exotic surface and defunct surface .
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高夷平面分布高度为海拔1700~2000m,完成于老第三纪末;
The higher planation surface , 1700m to 2000m above sea level , was formed in the latest period of Early Tertiary .