东海盆地西湖凹陷平湖组煤系烃源岩条件及成烃模式

西湖凹陷是中国近海最重要的煤成油气凹陷。近年来，油气勘探证实平湖组煤系烃源岩为西湖凹陷提供了丰富的油气资源。与陆上其他中生代煤成油气盆地不同，近海新生代海陆过渡相平湖组煤系烃源岩在母质来源、生烃条件和演化特征上都有其独特性。研究表明，平湖组煤和炭质泥岩具有富含树脂体、高I_H指数、Ⅱ₁-Ⅱ₂型干酪根、广覆式分布特点；煤系烃源岩富含三环二萜异海松烷、四环二萜β-扁植烷和五环三萜奥利烷，指示了针叶类裸子植物、蕨类植物和被子植物多植被母质来源；有机质组成差异、"内热外冷"地温和差异的沉积沉降速率造成了煤和泥岩在不同构造带成烃演化具有明显不同。这种差异决定了煤成油气资源具有"油气并举、东气西油"的分布格局，烃源岩成烃演化表现为"早期有利生油，晚期持续生气"模式。      

由地面重力数据确定扰动位径向二阶梯度

提出利用地面重力异常数据计算地面扰动位径向二阶梯度，将该梯度的积分表达式转换为卷形式的谱表达式，便于应用ＦＦＴ／ＦＨＴ技术进行快速计算。     

云南天文台基本天体测量工作的发展

介绍了云南天文台天体测量工作的发展过程，论述了在空间时代地面光学基本天体测量的必要性和应具备的条件，并且叙述了在新的要求和条件下，地面光学基本天体测量工作应该发挥的作用和广阔的发展前景。     

描述地壳垂直运动过程的一种函数形式

本文在已有数据处理方法的基础上，利用近代数值逼近理论，给出了从时空域角度描述地壳垂直运动过程的一种具体的函数解析形式。最后给出了一个实际算例。     

The Geologic Time Scale and the Italian stratigraphic record

The construction of the Geologic Time Scale (GTS) is a titanic scientific challenge that has been under way for two centuries and will require much dedicated effort in the future. Italy preserves a paramount stratigraphic record of Mesozoic and Cenozoic marine sediments that have been significant in the development of the modern GTS. The Italian stratigraphic record has been histori-cally important in introducing and defining the standard Chronostratigraphic Units (CUs) of the Neogene and Quaternary. Pelagic successions from Northern Apen-nines and Southern Alps have been used in the seventies for integrating the late Cretaceous-Paleogene Geomag-netic Polarity Time Scale (GPTS) with planktonic microfossil biostratieraohv and standard CUs. This was a major contribution to the construction of a new gener-ation of GTS based on integrated magnetobiochronol-ogy. The middle Miocene to early Pleistocene marinerecord from Sicily and southern Italy has been funda-mental for establishing the recently developed Astro-nomical Time Scale (ATS). In prospect, there are many potentials still to be exploited in the Italian marine stratigraphic record for implementing the GTS by defin-ing GSSPs of various CUs, improving magneto-biochronology and extending downwards the ATS.