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| 1 | 贵州六枝、水城煤田晚二叠世煤的微量元素特征显示文摘通过对六枝和水城煤田 10个煤矿主要可采煤层的 45个煤样品的常量和微量元素系统研究 ,概括了这两个煤田煤中常量和微量元素的丰度和分布特征 ;阐述了煤中微量元素的亲合性。这两个煤田煤中的全硫含量在受海水影响的煤层中较高 (最高达 7.5 % ) ,而在非海水影响的煤层中较低 ( 0 .3% )。六枝煤田的全硫含量明显高于水城煤田。Ca-Mn-Ge的平均含量在六枝煤田较低 ,而在水城煤田相对较高。在这两个煤田和不同的煤层之间 ,煤中微量元素含量的变化较小。与世界烟煤中一般含量范围相比 ,这两个煤田的特征是 Mn,V,Cu,L i,Zr,Nb,Ta,Hf,T1,Th和 U的含量相对高。 | 庄新国 龚家强 王占岐 曾荣树 徐文东 | 2001 | 地质科技情报2001，20，3： | 21 |
| 2 | Cenozoic Subsidence Features of Beitang Sag and Relationship with Tectonic Evolution显示文摘Based on the application of the EBM basin modeling software and 2-D seismic profiles,the Paleogene and Neogene subsidence histories of the Beitang (北塘) sag are simulated with the back-stripping technique,and the relationship between subsidence character and tectonic revolution is dis-cussed. Moreover,the result of the basin modeling reveals that the subsidence history of the Beitang sag has the characteristics of several geological periods,and these succeeding periods have shown certain inheritance and difference characteristics. At the early (Es3) and middle (Es2-Es1) rifting periods,the subsidence reaction of the Beitang sag was mainly in the charge of tectonic activity,while at the late (Ng-Nm+Q) rifting period-post rifting period and post rifting subsidence-acceleration period-the subsidence type is mainly that of thermal subsidence or regional depression effect; from the beginning of the subsidence history to the end,the reason for the basin subsidence has changed from tectonic ac-tivity to non-tectonic activity. | 张婷婷 王华 岳勇 黄传炎 张立伟 | 2009 | Journal of China University of Geosciences2009，20，4： | 0 |
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