Undiscovered Phanerozoic Porphyry Copper Deposits—A Global Assessment

Please refer to the attachment(s) for more details     

Disequilibrium Iron Isotopic Fractionation During the High-temperature Magmatic Differentiation of the Baima Fe-Ti Oxide-bearing Mafic Intrusion, SW China

Please refer to the attachment(s) for more details     

类星体展云的研究

长期以来,人们就相信类星体处于星系的中央,我们的研究试图证实事实是否果真如此。为此目的,我们需要回答以下几个问题: (1)类星体处在什么类型的星系中?它是在旋涡星系还是在椭圆星系中?当然,一种全新类型的星系也是可能的,但我们知道塞佛特星系核是在旋涡星系中,而射电星系是椭圆星系。 (2)类星体是否影响所在星系的特性? (3)所在星系是否影响类星体的特性?     

M87的宽波束射电观测

在本文中我们给出了对M87的宽波束的射电观测结果。结合Ceccareli等人对室女座的红外观测资料(1982),我们论证了,为了便于统一解释射电及红外的观测资料,在M87的周围除了一个高温的晕(～10~8K)外,还可能存在一个微温的延伸晕(～10~5K)。这个微温的晕将会造成M87和高温晕的引力封闭。     

Evidences of Holocene transgression on Domingos Petrolini Swamp, southern coastal plain, Rio Grande do Sul, Brazil

The Domingos Petrolini Swamp, located on the Southern Coastal Plain of Rio Grande do Sul, near the town of Rio Grande, constitutes an ample holocene lagoonal deposit. Events related to the holocene transgression and their diverse phases of glacial-eustatic ocillations were found through palynological analysis. Bases on these palynological data, four distinct phases to the paleoenvironmental evolution of the ecosystem were identified. It has also shown a transgressive restricted marine sequence on the base , which suggests the existence of a coastal brackish lagoon or a marisme type of environment. Later, there was a gradation for continentality conditions along with a scarce pollinical record. The third phase is characterized by the presence of marine components and halophyte vegetation, showing another transgressive event in that place. Lastly, the end of direct marine influence over the swamp was recorded and also the vegetation development as it appears these days.     

代表性流域地下水和地表水相互作用的研究

根据联合国科教文组织的委托,1964年4月7日至17日在巴黎召开的各国专家会议,通过了从1965年1月开始执行国际水文十年计划(IHD)的决议。     

城乡交缘带的农业

一、城乡交缘带的定义城乡交缘带是一个混合的土地利用带。在这里,农业用地不规律地转化为非农业用地。由于城市的特殊影响,农业经营模式与城市对农业用地的占用相关。其变化与城市化、工业化、土地投机买卖、人口流动等过程相关。由于城市和乡村是一个社会经济体系的组成部分,城乡交缘带内的土地需求既可能互相补充,也可能互相矛盾。很难确定这个动态地带的边界,因为它们随中心城市规模、工作强度而变化。正因为如此,就衍生出了许多术语来描述它,如边缘带、内边缘带、城乡交缘带、城市阴影区、外城市带、城市边缘带。