凡口超大型铅锌矿床中方解石的某些标型特征

本文通过对凡口超大型铅锌矿床中不同类型方解石的ＲＥＥ、ＤＴＡ和热发光标型研究，发现成矿期方解石的ΣＲＥＥ总量，ＬＲＥＥ／ＨＲＥＥ比值较成岩期方解石高出２￣１０倍，矿石或矿化地层的ＤＴＡ曲线多数表现为双峰或多峰，非矿化灰岩中方解石ＤＴＡ曲线为单峰，方解石热分解温度在８１９￣８３２℃之间；矿石中的方解石人工辐射照发光多数出现１６０，２６０，３７０℃左右的三峰，而地层中的方解石多数为１６０，３７０℃的双     

锡铁山铅锌矿中石英,方解石的热发光研究

在测试锡铁山铅锌矿中石英、方解石热发光的基础上，结合石英、方解石中微量元素特征，研究其热发光曲线特征和参数特征，并对比其它铅锌矿区石英、方解石热发光的资料，认为锡铁山铅锌矿中石英的热发光强度愈大，反映的含矿性愈差；方解石的热发光受其方解石中Ｍｎ＾２＋（Ｆｅ＾２＋）和ＲＥＥ＾３＋的影响，靠近矿体的方解石热发光强度降低，为进一步扩大矿区找矿工作提供了石英、方解石热发光的科学依据。     

石英的电子—空穴心在金矿评价中的意义

石英的电子-空穴心在金矿找矿勘探中具有重要意义。阳离子不等价类质同象造成的晶体缺陷,是使其具有电子-空穴心的内在因素。石英中常见的空穴心有Al-O~-、Ti-O~-、Fe-O~-,电子心有Al~(3+)+M、Fe~(3+)+M、Ti~(3+)+M等。电子顺磁共振波谱和热发光是检测石英中电子-空穴心的有效方法。在金矿床中,石英Al-O~-顺磁空穴心浓度较大者,其含金量也比较高。石英热发光曲线的发光峰的数量和强度与金成矿阶段有着明显的关系:早期成矿阶段结晶的基本不含金石英,热发光曲线常为近对称的单峰型,发光强度较大;主成矿阶段形成的含金石英,热发光曲线为多峰型,常具最大的发光强度;晚期成矿阶段生成的含金性较差的右英,热发光曲线呈单峰-双峰型,发光强度亦较大。石英热发光性与金矿体的空间展布表现出一定的联系;在矿体横向上,矿体中石英热发光曲线多为双峰-多峰型,围岩中石英热发光曲线多呈单峰型;在矿体垂向上,随矿体埋深的增加,石英热发光强度有逐渐增大的趋势。含金石英通常具有多个热发光温度,曲线形态为多峰型,且主热发光峰多位于相对较低的温度区间;不含金石英常仅有一个热发光温度,曲线形态为不对称的较平缓的单峰型,或为一平缓的曲线,发光强度较弱。     

302铀矿床石英萤石和方解石的热释光的垂直分带

302铀矿床是一个大型的隐伏花岗岩型铀矿床。矿床不同垂深部位产出的石英、萤石和方解石的矿物热释光研究结果表明,这些矿物的人工热释光(ATL)性质在矿床垂向上有明显的反映。矿床上部的石英的ATL发光曲线上只有一个单峰,而矿床下部则可出现有2—3个峰。矿床上部的石英、萤石和方解石的ATL发光强度相对较小,陷阱类型较少,陷阱深度较浅,而矿床下部的情况刚好相反。石英、萤石和方解石的人工热释光性质可以作为划分铀矿床垂直分带的良好标志。     

赣中地区若干金矿床（点）石英热发光特征及地质意义

本文描述了赣中地区若干金矿床石英热发光特征，分析了其与金含量及化学成分之间的关系。该区石英热发光曲线有双峰、单峰和隐峰（双向曲线）三种。研究表明，双峰单峰者金矿化较好；隐峰者，金含量较低。石英热发光的陷阱深度与金品位呈正消长关系。上述研究，有助于该区金矿的找矿和矿床评价荼。     

小秦岭地区脉金矿床找矿评价的石英矿物学标志及模型

通过区内505和530等主要矿脉石英红外吸收光谱、热爆裂及热发咣特征的系统研究，总结了该区无矿、贫矿及矿体石英脉评价的石英矿物学标志，表现为：①无矿石英起爆温度为210－330℃，热爆裂曲线无明显峰型；石英热发光总强度大于20000cps，峰值强度大于500cps;②贫金石英脉其石英红外吸收相对光密度DCO2／DH2O值大于1．1；起爆温度为210－280℃，石英热爆裂曲线为明显单峰形态，主爆峰对应温度值为420－440℃；石英热发光总强度介于10000－20000cps之间，峰值强度介于150－300cps之间；③矿体石英脉其石英红外吸收相对光密度DCO2／DH2O值小于1．0；起爆温度100－160℃，热爆曲线为单峰型，主爆峰对应温度为140－180℃；石英热发光总强度值小于10000cps，峰值强度小于150cps。根据本区含金矿脉矿化分带模式及石英红外吸收光谱、热及热发光参数系统变化规律，建立了该区石英脉型金矿床找矿评价的石英矿物学标志模型。     

相山铀矿床多期石英的天然热释光及EPR特征

本文对采自江西相山铀矿床不同成矿期的石英进行了天然热释光测定，并结合ＸＲＦＳ（Ｘ射线荧光光谱）、ＥＰＲ（电子顺磁共振）等分析数据对所取样品的天然热释光特征进行了研究。研究结果表明：不同成矿期石英的天然热释光在发光强度、发光谱线的峰形特征等方面存在明显差异；导致石英热发光的中心是ＳｉＯ３－３型电子心，电子心的多少与Ｕ、Ｔｈ总量有关；石英热释光强度与石英本身的颜色呈反消长关系；热释光发光谱线上的峰形特     

文峪金矿床石英热发光特征及其在预测找矿中的意义

文峪金石英发光研究表明，含矿与无矿石英由于其 构成不同，其热光光特征明显差异，含矿石英热发光曲线呈平缓开阔的弱弹峰形态，峰强值低于１５０ｃｐｓ；总发光强度低于１００００ｃｐｓ；而无矿石英热发光曲线呈中等－尖脱的单峰形态，值大于１５０ｃｐｓ，总发光强度大于１００００ｃｐｓ。     

石英热发光在金矿找矿中的意义

本文介绍了石英热发光在某些金矿床中矿体的不同部位的变化特征。利用石英热发光特征可以区分、评价不同成矿阶段的石英和石英脉的含金性。总结出含金石英脉的石英热发光曲线为双峰或多峰,而不含金的石英脉则为单峰曲线,并探索了石英热发光作为金矿找矿标志的规律及其意义。     

黑龙江省老柞山金矿方解石的天然热发光

对老柞山金矿４９件方解石样品的天然热发光曲线特征研究表明，成矿期方解石的热发光曲线以双峰为主要特征，成矿后期的方解石的热发光曲线则无峰型。方解石热发光曲线特征可作为矿区成矿阶段划分的一个重要标志。     

Définition d'une limite multicritère ; stratigraphie du passage Campanien–Maastrichtien du site géologique de Tercis (Landes,SW France)Definition of a multi-criteria boundary; stratigraphy of the Campanian–Maastrichtian interval of the geological site at Tercis (Landes,SW France)

Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414.     

Quaternary stresses revealed by calcite twinning inversion: insights from observations in the Savonnières underground quarry (eastern France)

Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ₁ roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003).     

NONMETALS DEPOSITS

正20141520 Bo Ying(Key Laboratory of Metallogeny and Mineral Assessment,MLR,Beijing 100037,China);Liu Chenglin Saline Spring Hydrochemical Characteristics and Indicators for Potassium Exploration in Southwestern and Northern Tarim Basin,Xinjiang(Acta Geoscientica Sinica,ISSN1006-3021,CN11-3474/P,34(5),2013,p.594-602,5 illus.,3 tables,28 refs.)     

MATHEMATICAL GEOLOGY

正20141243Chen Ge(Hangzhou Research Institute of Petroleum Geology,PetroChina,Hangzhou 310023,China);Si Chunsong Study on Sedimentary Numerical Simulation Method of Fan Delta Sand Body(Journal of Geology,     

PROSPECTING EXPLORATION

正20142599Chen Sanming(Guangxi Key Laboratory of Concealed Deposits Exploration,Guilin University of Technology,Guilin541004,China);He Yuzhou Block Model and Reserves Estimation of Panzhihua Iron Deposit Based on 3D Geological Modeling(Journal of Guilin University of Technology,ISSN1674-9057,CN45-1375/N,33(4),2013,p.610-615,9illus.,1table,15refs.)     

STRUCTURAL GEOLOGY

正20140594 Bai Daoyuan(Hunan Institute of Geology Survey,Changsha 410016,China);Zhong Xiang Faults in the Jingzhou Basin and Their Tectonic Settings(Geotectonica et Metallogenia,ISSN1001-1552,CN44-1595/P,37(2),2013,p.173-183,6illus.,59refs.)Key words:basin evolution,tectonic setting,South China In the Upper Paleozoic and Jurassic se-     

STRUCTURAL GEOLOGY

正20141912Cao Hui(State Key Laboratory for Continental Tectonics and Dynamics,Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China)Gravitational Collapse and Folding during Orogenesis:A Comparative Study of FIA Trends and Fold Axial Plane Traces(Geology in China,ISSN1000-3657,CN11-1167/P,40(6),2013,p.1818-1828,9illus.,35refs.,with     

PALEOZOOLOGY

正20141609 Chen Guiying(College of Earth Sciences,Guilin University of Technology,Guilin 541004,China);Han Nairen New Materials of Stylophora from the Upper Cambrian of the Jingxi Area,Guangxi,South China(Acta Palaeontologica Sinica,ISSN0001-6616,CN32-1188Q,52(3),2013,p.288-293,2 illus.,12 refs.)Key words:Stylophora,Guangxi     

GEOPHYSICS

正20140634 Cao Lingmin(Key Laboratory of Marine Geology and Environment,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China);Xu Yi Finite Difference Tomography of the Crustal Velocity Structure in Tengchong,Yunnan Province(Chinese Journal of Geophysics,ISSN0001-5733,CN11-2074/P,56(4),2013,p.1159-1167,6illus.,35refs.,with English abstract)