The UV Induced Fluorescence in Porites Coral from Hainan Island,China and Its Paleo—Environmental Implications

Porites coral in the nearshore waters off Hainan Island can give off yellowish-green fluorescence under UV laser induction.After fitting the data between rainfall and fluorescent intensity,it can be found that both appear in a simply linear equation with a correlation coefficeient of 0.78.The model equation can be used to reconstruct the rainfall in the past time by means of the determined fluorescent intensity.The correlation diagram of the determined and calculated or hindcast rainfall shows a synchronous change from 1982 to 1997.The peak positions of the variant curve are usually related to the El‘nino year.That means the drought and flood recycles are restrained to some extent by globally environmental changes.Therefore,the coral fluorescent intensity acts as a geochemical proxy for reconstructing the rainfall series in the past hundreds of years and predicting the drought-flood variant tendency in the future time.     

断层泥显微结构特征与断层滑动习性的研究

天然断层中普遍存在含有粘土矿物的断层泥，大量的实验研究和野外观察证实，不同应变速率的变形作用在断层泥中留下了特殊的显微构造特征（如褶皱、眼球状构造和膝折等）。因此，我们可以根据断层泥的变形特征，来推测变形时断层的滑动方式和次序。尽管这一方面的研究还处于探索阶段，但它可能将成为研究活断层的一个新途径。     

华北、西南一些地区地震发生在地壳浅部的证据

依据区域小孔径数字地震台网对河北省唐山、张北、怀来，山西省大同和云南省剑川、禄劝、姚安等７次地震的定位或重定位结果，并结合相应区域个别大震用远场资料反演的震源深度结果，以及山西省临汾遥测地震台网重新测定的震源深度结果，与以往地震目录中给出的震源深度测定结果进行对比分析，发现小孔径台网的震源深度测定结果基本分布在地表至地下十几千米的范围内．而以往给出的测定结果中，震源深度大致分布在地表至地下30ｋｍ 的深度上，与其平均值相差一半至一倍，两者之间的差别非常显著．分析认为，小孔径数字地震台网的测定结果可能更接近震源深度分布的真实情况，即上述地区的地震应是发生在地壳浅层内．对造成上述情况的原因，进行了初步的讨论，并提出改善震源深度测定精度的建议和措施．      

山门银矿卧龙矿段3号矿体物质组份及赋存状态研究

本文系统阐述了四平山门银矿物质组份及赋存状态特征。该矿床主要有用元素是银,是矿床主要的评价对象。金是主要伴生元素,具有综合利用价值。同时也查清了3号矿体中银、金等元素在矿体上的分布特征,银在矿体中自下而上,从南到北有逐渐增高的趋势,金呈上低下高,北低南高的特点。银与金重叠富集区在标高100～200m。     

湘桂粤赣区域性位场资料的数据处理及其应用

应用位场资料(△g,△T),进行数据处理和图像综合分析技术,圈定隐伏岩体,划分区域构造,提出找矿远景区,为在该区找矿预测提供新的信息.     

论塔里木——扬子板块及其古地理格局

本文重新审视塔里木与华北、扬子板块的亲疏关系,提出秦祁昆褶皱带应解体,柴达木、阿拉善与塔里木板块原为一体.新的古地理格局是塔里木—扬子板块为晋宁(塔里木)运动之后,形成的一个巨型克拉通,南方型震旦系及其冰成岩是其原始范围的标志.     

河东煤田煤储层中气胀节理的发现及其研究意义

在山西河东煤田石炭、二叠纪煤储层中发现规模类似于传统外生节理,而产状、节理面特征及发育载体等其他特征与内生裂隙极为相似的两组节理．该节理面上无擦痕和镜面特征,节理面产状与围岩中的节理差异明显．该节理属煤储层中流体间歇性释放造成的纯张节理．该区煤储层岩石物理研究表明,凡发育该类节理的煤储层,其渗透率较高,煤储层可改造性较好．该类节理发育的基本条件是：围岩封闭条件良好、煤储层中有机质丰度高达９０％以上和具有相应温压的煤层气藏成藏条件．研究该类节理不仅可以丰富煤储层岩石物理的研究内容,深化煤层气藏形成与保存条件的认识,而且还有助于正确评价煤层气的可采性．     

怀来地形变综合台的地潮观测

阐述了怀来形变综合台的地倾斜、洞体应变与钻孔应变等观测项目的台址条件、仪器设备、观测管理与倾斜、线应变、体应变固体潮汐观测的精度评定。该台是可与国内外知名台站媲美的优质台。     

Axenic culture of free-living conchocelis of<Emphasis Type="Italic">Porphyra yezoensis</Emphasis> and<Emphasis Type="Italic">Porphyra haitanensis</Emphasis>

After discarding marine microorganisms from conchocelis of Porphyra yezoensis and Porphyra ha/tanens/s, their axenic cultures were obtained through treatment with antibiotics. Antibiotic disc tests were carried out to determine the effectiveness of each antibiotic in eliminating contaminating microorganisms. Five of 12 antibiotics tested were selected and used to produce the axenic cultures in this study, which showed that 200 μg/mL streptomycin, 250 μg/mL penicillin, 252 μg/mL kanamycin, 30 μg/mL neomycin, 200 μg/mL chloramphenicol were effective concentrations for eliminating microorganisms from conchocelis when antibiotics were added singly step by step; whereas simultaneous combination of 150 μg/mL streptomycin, 250 (or 350) μg/mL penicillin, 150 (or 250) μg/mL kanamycin, 70 μg/mL neomycin and 200 μg/mL chloramphenicol was also effective for producing the axenic cultures. However,it seemed that the treatments with antibiotics applied individually were more feasible than those with all antibiotics added at the same time. This may be due to the combined inhibiting effect of antibiotics on the growth and development of conchocelis.     

中国煤田测井技术发展历程及前景展望

煤田测井在确定煤层空间位置、研究沉积环境、解释煤岩力学性质、解决水文地质问题等方面具有独特的作用,是煤田地质很重要的一种勘探手段。通过回顾煤田测井技术及测井专业队伍50年的发展历程,展示煤田测井技术所取得的成绩和应用前景,以此纪念中国煤炭地质总局成立50周年。