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Interaction mechanism of the interface between a deep buried sand and a paleo-weathered rock mass us
In order to evaluate the feasibility of safe mining close to the contact zone under reduced security coal pillar conditi......
A serics of simulating experiments on the mechanism of formation of banded ironsilica formations have been made using a ......
本文采用游离铁和全铁的比值,建立了0.220MaB.P.以来长武黄土-古土壤序列的高分辨率古风化强度序列,揭示出0.220MaB.P.以来黄土高原古环境发生一系列千年尺度......
洛川、宜川及渭南黄土剖面古风化强度的研究揭示出,在L1和L2中记录了一系列干冷气候事件。它们多数发生于黄土与古土壤的交界处,以5000-10000a的间隔......
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燕山中段(主要是指北京市平谷县内)大红峪组火山岩,在火山活动的间歇期,存在古风化现象,古风化使火山岩的成分、结构遭受改变,以致影响对......
Geochemistry of sedimentary rocks from Permian-Triassic boundary sections of Tethys Himalaya: implic
The geochemical characteristics of two sections—the Permian–Triassic boundary(PTB) Guryul Ravine section, Kashmir Valley......
通过对四川省若尔盖地区西康群砂泥岩的主量元素、微量元素和稀土元素进行综合研究,发现本区砂泥岩的S iO2、P2O5、MnO与PAAS有相......
本文采用游离铁和全铁的比值,建立了0.220MaB.P.以来长武黄土-古土壤序列的高分辨率古风化强度序列,揭示出0.220MaB.P.以来黄土高原古环境......