Distinction Between Oil Expulsion History and Gas Expulsion History

The process of organic matter transformation into oil and gas is also a balance process of hydrocarbon transformation. This article probes to distinguish the oil expulsion history from gas expulsion history based on the hydrocarbon generation, hydrocarbon residual, and hydrocarbon expulsion processes of the source rocks. In this method, the first step is to study the hydrocarbon expulsion rate by means of hydrocarbon generation potential method; the second step is to study the oil generation rate by means of the heating–pressuring experiment method; the third step is to study the oil residual rate by means of the mathematical method. The difference between the values of oil generation rate and oil residual rate is defined as the oil expulsion rate, while that between the values of hydrocarbon expulsion rate and the gas expulsion rate is defined as the gas expulsion rate. Then, combined with the geological parameters of source rocks, the oil and gas expulsion history can be obtained. This study on Es₁ Source rocks, Nanpu Sag, Bohai Bay Basin, China shows that the primary expulsion period of Es₁ source rocks is Guantao–Minghuazhen period.     

Observed Glaciohydrological Changes in China's Typical Monsoonal Temperate Glacier Region since 1980s

Under the background of significant climate warming since the 1980s,the glaciers in China's monsoonal temperate glacier region respond to the warming intensely.Based on the glaciohy-drological observations at some typical glaciers from Mts.Yulong(玉龙) and Gongga(贡嘎) of Heng-duan(横断) Mountains Range in the southeastern Tibetan plateau,the glaciohydrological changes in the temperate glacier region since the 1980s were investigated.First,the glacier terminus exhibited an accelerating retreat.Second,as the glaci...     

广西大王顶金矿成矿地质特征与找矿成因浅析

通过地质勘查工作和综合研究,发现大王顶金矿床金矿体主要产于花岗斑岩体内、或是斑岩体顶、底部外接触带中;有构造破碎蚀变(花岗斑岩)岩型(产出黄铁绢英岩型矿石)及含金硫化物石英脉型矿石)两类矿体。矿床成因类型属岩浆热液金矿床大类中的重熔岩浆热液金矿床。     

太湖区域三维湖陆风场数值模拟

本文考虑太湖周围实际地形，建立了一个适合太湖区域复杂地形，满足静力平衡条件的三维非定常大气边界层数值模式，计算表明:模式运行十分稳定，与实际观测资料吻合较好。     

MSRT的太阳观测能力

密云米波综合孔径射电望远镜（ ＭＳＲＴ） 是一架同时具有高空间分辨率和高时间分辨率,高灵敏度的大型设备,工作频率在２３２ ＭＨｚ。使用该望远镜能得到太阳爆发的空间分布及其随时间变化的丰富信息,所得数据将填补我国具有空间分辨率的太阳射电数据的空白。在国际太阳活动监测中,由于地理位置原因,也是其它同类设备不可取代的。可以期待在第２３ 周太阳峰年的观测与研究中,得到新的有意义的数据和研究成果     

A Study on the Forming Conditions of Basalts in Seamounts of the South China Sea

Volcanic rocks in seamounts of the South China Sea consist mainly of alkali basalt, tholeiitic basalt, trachyandesitic pumice, dacite, etc. Inclusions in the minerals of the volcanic rocks are mainly amorphous melt inclusions, which reflects that the volcanic rocks are characterized by submarine eruption and rapid cooling on the seafloor. Furthermore, fluid-melt inclusions have been discovered for the first time in alkali basalts and mantle-derived xenoliths. indicating a process of differentiation between magma and fluid in the course of mantle partial melting. Alkali basalts and inclusions may have been formed in this nonhomogeneous system. Rock-forming temperatures of four seamounts were estimated as follows: the Zhongnan seamount alkali basalt 1155 ∼ 1185 °C; the Xianbei seamount alkali basalt 960 ∼ 1200 °C; tholeiitic basalt 1040 ∼ 1230 °C; the Daimao seamount tholeiitic basalt 1245 ∼ 1280 °C; and the Jianfeng seamount trachyandestic pumice 880 ∼ 1140 °C. Equilibrium pressures of alkali basalts in the Zhongnan and Xianbei seamounts are 13.57 and 8.8 × 10⁸ Pa, respectively. Pyroxene equilibrium temperatures of mantle xenoliths from the Xianbei seamount were estimated at 1073 ∼ 1121 °C, and pressures at (15.58 ∼ 22.47)×10⁸Pa, suggesting a deep-source (e.g. the asthenosphere) for the alkali basalts. This project was financially supported by the National Natural Science Foundation of China and Guangzhou Marine Geology Survey.     

涪陵榨菜菜头品质与地质背景关系的研究

本文论述了涪陵榨菜的原料──芥菜的生态环境特征，以及涪陵地区地质背景与芥菜生态环境的相关性。划分了芥菜生长的优势区和劣势区，并预测了发展远景区。     

海南省蓬莱蓝宝石及其形成条件研究

海南省蓬莱是我国著名的蓝宝石产地之一。本文研究了该地蓝宝石的矿物学及化学组成特征，并首次详细研究了蓝宝石的包裹体特征，测定了蓝宝石的形成温度。最后，综合其它证据，对蓝宝石的成因进行了讨论。