西宁地区大豆产量构成有关因素的初步研究

本文对大豆在西宁地区后期的植株长势，产量及其构成因素进行了２年试验分析，结果表明，生育后期荚果干重呈持续上升趋势。叶片干鲜重，荚果鲜重，茎杆干重和根干重均在鼓粒未期达最大值，以后均逐渐下降，鼓粒期是大豆产量形成的关键时期。     

澧水流域暴雨洪水的初步研究

根据澧水流域多年实测水文气候资料的历史记载特征值，阐明了影响暴雨洪水发生发展的主导因素，并以暴雨特性为主要条件，将暴雨洪水分为四类，同时着重分析了洪水的组成与遭遇，以及暴雨洪水的基本特性。     

江汉盆地拖市构造热演化特征及地质意义

该文利用油层温度和井温资料建立了江汉盆地拖市现代地温场分布，并估算了大地热流；采用镜质体反射率积分法计算了两期古地温梯度；用均一法实测硬石膏包裹体捕获古温度数据。结果表明，不同时期的热演化反映区域构造活动具有从东北向西南迁移的规律。根据热历史与成岩及构造演化之间的关系，讨论了导致该区域储层致密的主要因素硬石膏的充填与沉淀特征。     

New evidence for the origin of natural gas in Ordos Basin from hydrocarbons of oil water

The chief aim of the present work is to investigate the controversy origin of natural gas in the Ordos Basin by using the hydrocarbons of oil water. New evidence has been found: There is relatively high content of light hydrocarbons and low content of heavy components in the hydrocarbons fraction of oil water in the middle gas field of the Majiagou Formation, Ordovician reservoir. The hydrocarbons of oil water in Well Shan 12 and Well Shan 78 have relatively high abundance of tricyclic terpane. Tricyclic terpane/hopane of the two samples are 1.48 and 0.36, respectively. They also show that pregnane and hompregnane are in relatively high abundance with lower hopane/sterane ratio. Pr/Ph is less than 2.0. These characteristics reflected the source input of marine carbonate sedimentary environment. In contrast, the hydrocarbon of Well Shan 81 is lack of tricyclic terpane series and pregnane. It has a high hopane/sterane ratio and Pr/Ph is 3.27. These parameters are typical character of terrestrial organic matter. Furthermore, the hydrocarbons of oil water in Well Shan 37 and Well Shan 34 is between the two typical situations. They have little content of tricyclic terpanes. They may be derived from a mixing source of marine carbonate and terrestrial organic matter input. Similarly, the maturity parameters approve this suggestion. The samples of Well Shan 12 and Well Shan 78 which derived from marine carbonate have relatively high maturity and samples derived from terrestrial organic matter have lower maturity. The maturity of the hydrocarbons of mixing source is between these two situations. The suggestion coincides with the geological background and source rocks distribution.     

Influence of biodegradation on benzocarbazole distributions in reservoired oils

Partition coefficient difference of benzocarba-zole isomers between oil, water and mineral phase makes them auseful indicator to quantify petroleum migration distance. Because of their nitrogen-heteroatom andannelated aromatic cycles they are generally regarded asbeing more resistant and the effects of biodegradation ontheir concentrations and distributions have not previouslybeen investigated. Reservoir extracts from three wells lo-cated in the Leng43 block of the Liaohe Basin were analyzed to investigate their occurrence and the effect of biodegrada-tion. Both hydrocarbon biomarkers and benzocarbazole isomers show systematical changes with the increase extent of biodegradation in study columns. Carbazole compounds may be biodegraded in a similar way to that observed in aliphatic and aromatic hydrocarbons. The distance from oil water contact is a primary control factor for biodegradation. The concentrations of benzocarbazole isomers show a slight increase in the upper part of the columns then a sharp de-crease towards oil water contact (OWC). Among three iso-mers benzo[a]carbazole seems more susceptible to biode-gradation than other two isomers and benzo[b]carbazole has higher ability to res ist bacterial attack. Benzo[b]carba-zole/benzo- [a]carbazole ratios can sensitively indicate the degree of biodegradation and the benzocarbazole index (BCratio) cannot be directly used as a migration indicator inbiodegraded oils.     

Genetic mechanism and prediction of Paleozoic clastic eureservoirs in platform of Tarim Basin

Based on the pore cast and cathodolumines-cence thin sections, diagenesis process, source rock matura-tion history, structural evolution and reservoir qualitycharacteristics, the points of view that the porosities of Pa-leozoic clastic eureservoirs in the platform of the Tarim Ba-sin are mainly secondary, and the dissolution plays anunignorable role in the formation of eureservoirs, are putforward. In this paper, a series of criteria for the recognitionof the secondary porosities, the occurrence extent and classi-fication of secondary porosity are introduced, and threekinds of dissolution mechanism—the aluminosilicate dis-solution, the silicon dioxide dissolution and the carbonatedissolution—to generate the secondary porosity are comeup with. The formation, distribution, preservation and dis-appearance of eureservoirs are controlled by the paleo-structural framework and evolution, and hydrocarbon fillingand discharging. Paleostructural framework manipulate themigration path and direction of the acid fluid so as to deter-mine the position and extent of the dissolution. Paleostruc-ture highs and continuous paleouplifts are in favor of devel-oping the secondary porosity. The hydrocarbon filling madethe secondary porosities preserved and the hydrocarbondischarging let the secondary porosities filled by later calciteor quartz overgrowth cements. Paleostructure highs andcontinuous paleouplifts during the maturation period ofCambrian, Ordovician and Carboniferous source rocks(corresponding to S, P and K) are main areas for eureservoirs developing.     

西宁植物区系特点与地理分布

对西宁地区植物区系成分进行了初步分析并总结了其区系特征；温带成分占绝对优势；植物种类比较贫乏，特有现象不明显，植物区系具有汇集性质，植被组成和结构简单。     

三万年来山西临汾盆地古地理环境的变迁

通过对临汾盆地中一个地层剖面、４个５０ｍ深钻孔中沉积物样品的粒度、粘土矿折、孢粉等第一手资料的分析，详细讨论了该盆地三万年来气候、水文、植被及沉积环境的特征、演变，重建了该盆地晚更新世以来的地理环境。     

柴达木盆地及相邻地区地质构造演化

用板块构造理论对柴达木盆地及相邻地区的地质构造演化进行了论述,并划分出华北板块、塔里木板块、秦祁昆板块与巴颜喀拉-扬子板块四部分,各部分先后于早古生代时期、晚古生代后期及中生代早期由其间发育的深断裂-缝合带相拼接。中新生代时期印度板块向北碰撞、俯冲于西藏板块之下,第三纪中晚期俯冲作用加剧,柴达木地区随着青藏高原整体迅速隆升而陷落,形成了柴达木构造断陷盆地。