地层学的发展推动油气地质理论研究的进步

自上个世纪50年代以来,地层学经历了彻底的变革,逐渐由“相模式”、“沉积体系”、“地震地层学”发展到目前的“层序地层学”,形成高分辨率层序地层学和事件地层学的理论体系和研究方法。文章围绕层序地层学、高分辨率层序地层学基本方法及理论体系,与含油气系统相关关系进行了讨论。     

雪宝顶碱性花岗岩岩石地球化学与成矿控制

对雪宝顶碱性花岗岩具有高丰度的W、Sn、Be含量和W、Sn矿化花岗岩的微量元素组合特征进行了分析，结果显示：稀土元素具有∑REE含量与LREE／HREE比值偏低和负Eu异常的特点；元素比值K／Rb，U／Th，Nb／Ta的规律性变化以及矿脉产状特征等表明W-(Sn)-Be脉状矿床形成于岩浆演化晚期，与岩浆期后的热液活动有关。     

黄海海域陆相中生界地震反射特征及靶区优选

利用前人对黄海海域油气勘探成果，作者对北黄海盆地，南黄海盆地北部坳陷陆相中生界进行了研究。结果认为：黄海海域陆相中生界分布广、厚度大、具有良好的生、储、盖组合，是该区下步油气战略性调查的首选目标。并提出北黄海陆相中生界油气勘探应以东部凹陷为主，同时兼顾中部凹陷。南黄海北部坳陷近期油气勘探重点应选择北部凹陷和加大东北凹陷的研究力度。南黄海南部坳陷陆相中生界油气勘探重点放在南五和南七凹陷。     

Experimental Investigation of Instantaneous Properties of Wave Slamming on the Plate

The purpose of this paper is to investigate the instantaneous properties of wave slamming on the plate structure of an open structure.The advanced instantaneous measuring technique-Particle Image Velocimetry(PIV) is applied to acquire the instantaneous velocity field of wave slamming.From the cross-correlation analysis results of the images captured by the CCD camera,the flow fields of wave impacting on the structure are displayed visually,and the instantaneous whole-field fluid velocity vectors are obtained.The relation between the instantaneous peak impacting pressures and the instantaneous velocities of water particles is studied by probability analysis.     

TECTONIC FRAMEWORKS OF THE BOHAI GULF AND COASTAL, BASINS

The Bobai Gulf and its coastal basin is an important oil and gas province of China that covers an area of 200,000 sq. km.It is a polycylic superimposed basin. Its history of development can be subdivided into four stages: (i) Late Proterozoic parageosydine stage (Sinian); (ii) Early palaeozoic cratonic stage (Lower Cambrian-Middle Ordovician): (iii) Late palaeozoic intracratonic coal bearing sequences stage (Middle Carboniferous-Permian); (iv) Mesozoic and Cenozoic taphrogenic rifting and subsidence stages.During the Paieogene rifting stage, three NNE trough systems and three nearly E-W trough systems were initialed as the results of regional extensional stresses. Central rift valleys, low angle gravity faults and a series of asymmetrical half-grabens were developed surrounding the "Bohai Mantle Plume ". Th- riftitip troughs were egtended ard widened gradually. During the Neocene, a large saucer-shaped sedimentary basins was developed into a thick blanket covering the whole areas of either the Paleogene     

抑制栉孔扇贝第一极体对受精卵染色体行为及胚胎倍性组成的影响

采用细胞松弛素B（CB）处理，栉孔扇贝（Chlamys ferreri）抑制其受精卵的第一极体（PB1），研究抑制PB1对受精卵减数分裂过程及胚胎倍性组成的影响。结果发现，抑制第一极体显著改变了受精卵的染色体行为，在第二次减数分裂过程中共发现4种典型染色体分离类型，分别是三极分离（41．7％）、二极分离（11．7％）、双二极分离（24．9％）和非同步分离（2．8％），其余的受精卵（19．0％）染色体分离行为紊乱。对4-8细胞期胚胎的倍性组成进行分析，发现处理组中含有二倍体（10．9％）、三倍体（12．5％）、四倍体（19.5％）、五倍体（12．6％）以及非整倍体（46．6％）胚胎。研究结果表明，二极分离和双二极分离分别是形成三倍体和四倍体的主要机制，而其他的染色体分离行为将主要形成非整倍体。     

Vertical Sound Velocity Transition in the Coral Reef Core and Its Significance of Indicating Facies

On the basis of the sound velocity measurements of the coral reef core from Nanyong No.1 well of Yongshu Reef in the Nansha Islands,the paper studies the relations between the vertical sound velocity transition features in the coral reef core and the corresponding stratigraphic depositional facies change as well as stratigraphic gap of erosion,analyses the cause of the sound velocity transition,expounds the concrete process of the sea level change resulting in the stratigraphic gap of erosion and facies change in the coral reef and explains the relations between the vertical sound velocity transition in the coral reef core and the corresponding stratigraphic paleoclimate and the sea level change.This study is of important practical value and theoretical significance to the island and reef engineering construction and the acoustic logging for oil exploration in the reef limestone area as well as the paleoceanographic study of the marginal sea in the westerm Pacific Ocean.     

褐藻酸降解菌侵染海带过程的超微结构观察

首次研究了褐藻酸降解菌侵入海带的途径，通过电镜观察，跟踪研究了褐藻酸降解菌染海带过程中海带表皮细胞壁的超微结构变化。结果表明，褐藻酸降解侵染海带的过程是首先引起海带表皮细胞壁藻胶层表面的破坏，然后引起藻胶层的断裂，并使藻胶层逐渐降解变突，最后褐藻酸降解菌通过海带细胞的壁藻胶层的断裂变突处进入海带细胞内。     

渐新世/中新世分界的地层学事件

介绍渐新世/中新世分界面(即古近纪/新近纪分界面)附近的浮游有孔虫和钙质超微化石事件及其新年龄。2004年国际地层年代表确定该分界面位于第58长偏心率周期弱振幅处,古地磁事件C6Cn.2n底面,经天文调谐后的年龄为23.03 Ma。发生在该界面附近的生物地层学事件主要是浮游有孔虫Paragloborotalia kugleri的始现面(22.96 Ma)和钙质超微化石Sphenolithus delphix的末现面(23.11 Ma)。在南海北部东沙群岛附近的大洋钻探ODP1148站,渐新世/中新世界面以崩塌沉积物为特征,有明显沉积间断,标志南海当时有较大范围的构造运动。     

低凝固温度琼脂糖的制备方法研究

以石花菜分级得到的琼脂糖为原料，采用甲基化方法制备低凝固温度琼脂糖。所得到的低凝固温度琼脂糖产品的凝固温度为30．1℃(1.5％浓度)，融化温度为64．8℃(1．5％浓度)，凝胶强度为264g／cm^2(1.0％浓度)，主要质量标准与Sigma公司的低凝固温度琼脂糖产品接近，符合低凝固温度琼脂糖产品的质量要求。