冀东水厂麻粒岩中辉石的穆斯堡尔谱研究     

Li Xianzhou 《吉林大学学报(地球科学版)》1994,(4)

水厂麻粒岩中辉石的穆斯堡尔效应研究表明，斜方辉石的谱图为两组四极双峰，分别由Ｍ＿１和Ｍ＿２位上的高自旋态Ｆｅ￣（２＋）产生，而单斜辉石则为三组四极双峰，其中两组较强的双峰分别由Ｍ＿１和Ｍ＿２位上的Ｆｅ￣（２＋）产生，第二组弱双峰是由四面体和八面体位置上的Ｆｅ￣（３＋）共同产生的。水厂麻粒岩中辉石的有序程度高，并且斜方辉石有序度大大高于单斜辉石，而单斜辉石Ｍ＿１、Ｍ＿２位置的畸变程度高于斜方辉石。在压力相同的条件下，Ｆｅ￣（２＋）的有序度具有明显地温度效应，高温有利于Ｆｅ￣（２＋）做有序分布。  相似文献   

ESR assessment of kerogen maturation and its relation with petroleum genesis     

M. Y. Bakr  M. Akiyama  Y. Sanada 《Organic Geochemistry》1990,15(6)

Petroleum hydrocarbons are formed by breakdown of kerogen preserved in source rocks throughout the process of catagenesis. This process is accompanied by free radical generation in kerogen. The availability of measuring free radicals in kerogen using ESR to deduce a maturation estimation of potential source rocks has been hindered due to the presence of the solvent-extractable organic molecules (SEOM) trapped within the kerogen matrix. Spin concentration (Ns) of the kerogen treated with pyridine (K_Py) represents the paramagnetic centers of the kerogen matrix itself and provides a potential parameter to evaluate kerogen maturation.  相似文献   

对中国大陆区域地磁场提取的认识     

申宁华 《吉林大学学报(地球科学版)》1990,(4)

本文从球谐函数理论的物理含义、中国地磁数据的分布情况及实际计算结果的分析,提出对当前用球谐函数拟合法提取中国大陆区域地磁异常的几点认识。  相似文献   

乌恰地震加速度记录特征研究   总被引：1，自引：0，他引：1  

宋和平  柔洁 《内陆地震》1990,4(3):239-246

研究了1985年乌恰余震取得的加速度记录,从地质及地球物理的角度探讨一些加速度异常点。分析了记录的峰值加速度与震害及场地烈度的对应关系。对比了竖向和水平向加速度、速度反应谱及谱与震级的变化特征。  相似文献   

乳砷铅铜石的发现与研究   总被引：2，自引：0，他引：2  

赖来仁  李艺 《矿产与地质》1991,5(6):459-463

乳砷铅铜石发现于1984年,在广西德保和平桂等矿区的硫化物型矿床的氧化带铁帽中.对该矿物的物理、化学和X射线粉晶分析、红外光谱分析以及差热分析等方面进行了测试研究,其结果与国外已知数据基本一致.矿物呈淡黄绿或深绿色,细粒状或葡萄状,硬度H=4,比重D=5.35,透明,二轴晶负光性,2V大,Ng=1.9817,Nm=1.9703,NP=1.9584.化学成分为PbO 35.19,CuO 30.64,As_2O_5 30.09,FeO 0.28,ZnO 0.05,H_2O 4.10(%).相应的化学分子式为Cu_(2.96)Pb_(1.21)(AsO_4)_(2.01)(OH)_(2.31)·0.59H_2O.X射线粉晶数据与JCPDS26～1410卡基本一政,衍射强线为3.14(10),3.24(8),2.92(8),2.55(8),2.74(7),2.49(7),2.27(7),4.51(6),4.94(5),2.66(4),1.902(4),1.817(4).计算的晶胞参数为a=10.236(?).b=5.904(?),C=14.213(?),β=106.39°,z=4,单斜晶系;空间群为A2/a.红外吸收光谱波数为3440、1640、870、820、775、465和1100、590、557(cm~(-1));差热分析吸收峰为580、773、812、889、898(℃).  相似文献   

黄铁矿中晶格金的萃取实验及有关问题的初步研究     

陈伟  张振儒 《吉林大学学报(地球科学版)》1991,(4)

尽管某些研究者认为黄铁矿中确实存在有晶格金,但以前的研究都没有取得直接而充分的证据。为此,作者做了晶格金的萃取实验,使黄铁矿中的晶格金(离子金)形成[AuCl_4]-络合物,然后利用紫外—可见光谱证实了[AuCl_4]-的存在,从而取得了晶格金存在较为直接而充分的证据。作者认为,象黄铁矿中Fe~(2+)与Au~(+)的取代关系的理论解释不应局限于类质同象的传统理论上,而应用现代的配位场理论解释之。计算表明,只要温度足够高,Au~(+)是可以取代Fe~(2+)形成晶格金的。本文还通过穆斯鲍尔谱的研究,探讨了晶格金的形成机理。  相似文献   

Theoretical research on intensity envelope function of strong ground motion     

金星  瘳振鹏 《地震学报(英文版)》1994,7(4):637-644

（金星，瘳振鹏）Ｔｈｅｏｒｅｔｉｃａｌｒｅｓｅａｒｃｈｏｎｉｎｔｅｎｓｉｔｙｅｎｖｅｌｏｐｅｆｕｎｃｔｉｏｎｏｆｓｔｒｏｎｇｇｒｏｕｎｄｍｏｔｉｏｎ￥ＸｉｎｇＪＩＮａｎｄＺｈｅｎ－ＰｅｎｇＬＩＡＯ（ＩｎｓｔｉｔｕｔｅｏｆＥｎｇｉｎｅｅｒｉｎｇＭｅｃｈ...  相似文献   

CHARACTERISTICS OF TURBULENCE SPECTRA IN DIFFERENT WEATHER PROCESSES UNDER UNSTABLE CONDITIONS^*          下载免费PDF全文

Zhu Wenqin  Zhu Cuijuan  Li Xingsheng 《Acta Meteorologica Sinica》1994,8(3):296-304

In this paper,the data chosen from measurements by supersonic anemometers in Tongxian County of Beijing in 1990 are used to study characteristics of turbulence spectra in precipitation weather.Some turbulence parameters such as turbulence intensity,heat and momentum fluxes,friction velocity,M-O length and stability parameter are calculated and their dependence on turbulence spectra in different stability conditions are analyzed.Some encouraging results are obtained and compared with others' results.  相似文献   

Petroleum isoprenoid hydrocarbons derived from catagenetic degradation of archaebacterial lipids     

J. Albaigés  J. Borbón  W. Walker 《Organic Geochemistry》1985,8(4):293-297

The three GC coeluting C₄₀ bis-phytanes with head-to-tail, tail-to-tail and head-to-head linkages considered to be archaebacterial markers, have been recognized in petroleum by enhanced mass-fragmentography. Supporting evidence has been obtained by the simultaneous occurrence of two C₂₁–C₂₄ series of isoprenoid and quasi-isoprenoid hydrocarbons that are supposedly formed during the catagenetic degradation of the isomeric C₄₀ isoprenoids. The C₂₁–C₂₄ quasi-isoprenoid hydrocarbons have been identified conclusively for the first time by comparison with authentic standards.  相似文献   

Contact-metamorphic effect on parameters for kerogen maturation     

Yoshihiro Uji 《Organic Geochemistry》1986,9(6)

This study examines the effect of contact metamorphism by an igneous dyke on parameters for kerogen maturation, such as elemental composition (H/C, O/C, N/C), ¹H-NMR T₁, vitrinite reflectance and infrared spectra. Although elemental composition and ¹H-NMR T₁ of the kerogen changed only within 1.5 and 5.0 m from the dyke respectively, vitrinite reflectance of the kerogen was thermally affected beyond 10.0 m from the intrusion. It is concluded that vitrinite reflectance is the most sensitive of the parameters evaluated to assess thermal stress of kerogens.  相似文献