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   

小秦岭石英脉（构造带）含金性评价的包裹体指标研究     

卿敏  白万成 《黄金地质》1995,1(3):54-60

选择了小秦岭含金石英脉脉石英的显微镜下特征、红外光谱及近脉（矿）围岩全岩爆裂温测等３种包裹体研究方法，对比研究了东闯金、铅矿区和杨砦峪矿区不同含金性石英脉、含矿脉中的富矿、贫矿地段及矿体不同部位的包裹体特征，提出出了石英脉含金性评价及差别矿体剥蚀程度的包裹体指标。  相似文献   

新疆库布苏金矿石英标型特征研究   总被引：2，自引：0，他引：2       下载免费PDF全文

吕瑞英 《地球科学》1995,20(1):53-57

重点研究了库布苏矿化带中石英脉与金矿化关系，对不同成矿阶段石英的化学成分，晶胞参，红外光谱，热发光，包裹体等进行了研究，总结了找矿矿物学标志。  相似文献   

内蒙赤峰莲花山金矿田石英脉的红外光谱成矿信息及定量预测     

郭树平  张培萍  孙本龙  王自杰 《吉林大学学报(地球科学版)》1995,(4)

测试了１３０余件含金石英脉及不含金石英脉的红外光谱试样，查明了该区含金石英脉的红外光谱特征，同时配合其它预测含金石英脉的测量方法，提出了该区含金石英脉的预测靶区，经过初步验证，预测基本上是准确的。  相似文献   

Vertical column abundances of HCN deduced from ground-based infrared solar spectra: Long-term trend and variability     

E. Mahieu  C. P. Rinsland  R. Zander  P. Demoulin  L. Delbouille  G. Roland 《Journal of Atmospheric Chemistry》1995,20(3):299-310

A set of high-resolution IR solar spectra recorded at the International Scientific Station of the Jungfraujoch, Switzerland, from 84/06 to 93/06, and at the National Solar Observatory McMath-Pierce solar telescope facility on Kitt Peak, Arizona, U.S.A. from 78/05 to 92/07 have been analyzed to determine the vertical column abundances of hydrogen cyanide, HCN, above the two stations. The analysis was based on least-squares curve fitting of calculated spectra to the observations encompassing the P4 and the P8 lines of HCN respectively located at 3299.5273 and 3287.2483 cm^–1. The results obtained for the two stations indicate that no significant long-term trend affects either of the two databases; however, this analysis reveals variable increases during springtime of up to a factor of 2 in the HCN total column above the Jungfraujoch and even up to 3 above Kitt Peak. The calculated mean vertical column abundances, excluding the spring observations, are equal to (2.55±0.30)×10¹⁵ molec./cm² (S.D.) and (2.75±0.30)×10¹⁵ molec./cm² respectively above the Jungfraujoch and the Kitt Peak observatories. Based on a realistic volume mixing ratio profile, these columns translate into mean volume mixing ratios equal to 190×10^–12 ppv at the respective altitudes of the stations.  相似文献   

黄土丘陵干旱区地下水资源遥感调查研究   总被引：4，自引：0，他引：4  

杨自安  刘碧虹  邹林  张普斌  张建国 《矿产与地质》2005,19(2):214-218,213

以宁夏固原县东部的黄土丘陵干旱地区为研究区，利用ETM的热红外波段进行地下水资源遥感调查，识别对地下水资源和水环境有重要影响的地形地貌、岩性构造、土壤植被、水系特征等综合自然体的遥感特征，分析研究地表水与地下水联系的环境条件，提取遥感找水信息异常，圈定找水靶区，为探水井设计及施工提供重要依据，取得了良好的应用效果。  相似文献   

黑色电气石矿物组成与红外辐射特性的关系   总被引：4，自引：0，他引：4  

杨如增  徐礼新  杨满珍  姚桂田 《上海国土资源》2002,(1):61-64

作者对产自云南马关－麻粟坡矿带、广西钟山八步矿区的黑色电气石进行了矿物组成及化学成分的分析测试。实验表明，不同矿点黑色电气石的矿物组成和化学成分存在明显差异，化学成分对红外辐射特性存在一定影响，氧化镁含量较高的镁电气石具有高的红外法向比辐射率。论文对电气石的化学成分与成因的相互关系进行了讨论，为合理选矿，有效利用黑色电气石资源提供了实践和理论依据。  相似文献   

天然金刚石的定向红外光谱研究   总被引：2，自引：2，他引：2  

杨志军  彭明生  苑执中 《矿物学报》2001,21(3):393-396

本文对天然金刚石在垂直于（100）、（110）和（111）三个方向上定向红外光谱进行了定量比较分析，指出C－H键和C－C键在以上三个方向上的浓度不相同，引起C－C键和C－C键在不同方向上的浓度差异是由于氢具有优先取代垂直于（111）方向上C－C键中碳原子的倾向。  相似文献   

Application of short-wave infrared spectroscopy to define alteration zones associated with the Elura zinc–lead–silver deposit, NSW, Australia     

Yanyan Sun  Philip K. Seccombe  Kai Yang   《Journal of Geochemical Exploration》2001,73(1):63

Short-wave infrared reflectance spectra obtained from a Portable Infrared Mineral Analyser (PIMA) have been used to define alteration zones adjacent to base metal sulfide ore bodies at the Elura Mine, Cobar, Australia. The spectroscopic work identified white mica (sericite), chlorite and carbonates of hydrothermal origin in the alteration zones associated with the ore bodies. Weathering, alteration and ore zones can be discriminated by variations in the intensity and wavelength of relevant absorption features. Hydrothermal alteration is classified into four principal types, namely sericitic, silicic, chloritic and carbonate alteration. The first three types comprise overprinting hydrothermal assemblages of quartz, sericite, chlorite, ankerite, siderite, calcite and sulfides developed in strongly altered metasiltstone and slate of Early Devonian age, adjacent to the zinc–lead–silver mineralisation. An extensive zone of carbonate alteration, manifested as porphyroblasts of siderite in the host metasediments, is recognised beyond the zones of strong alteration. Spectral analysis is consistent with the mineralogical data obtained from XRD and XRF analyses and defines the limits of the alteration zones to distances of about 80 m around the ore bodies. The study demonstrates the potential for spectral analysis to assist with drill hole logging and the identification of alteration zones as part of mineral exploration and development programs.  相似文献   

南极中山站以南地区冰面高程信息的提取     

孙家  刘继琳 《武汉大学学报(信息科学版)》1996,(1)

在实地高程控制点与热红外影像上同名像点的辐射亮度值间建立函数关系，从Ｌａｎｄｓａｔ４ＴＭ６影像上提取出中山站附近冰面的高程信息，并绘制成冰面地形图。  相似文献