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Petroleum Geology and Exploration Potential of Vienna Basin
ZHANG Hongwei, LI Jianghai, ZHANG Liwei
Acta Scientiarum Naturalium Universitatis Pekinensis    2016, 52 (5): 881-890.   DOI: 10.13209/j.0479-8023.2016.047
Abstract1356)   HTML    PDF(pc) (1820KB)(1222)       Save

The oil geology feature of Vienna Basin was summarized and potential of exploration was discussed by analysising the strata of Vienna Basin and fracture development characteristics. Vienna Basin is a pull-apart basin located between the East Alps and West Carpathian. Its basement is composed of the Hercynian Bohemian Massif and Paleozoic and Mesozoic strata. The tectonic evolution can be divided into three stages, including Jurassic extensional rifting, Cretaceous-Early Miocene over-thrusting and Middle Miocene pull-parting stage. There are three structural lays from top to bottom, Jurassic-Cretaceous autochthonous, Permian-Paleogene allochthonous Alpine nappes and Neogene sediments. There are two sets of source rocks: the upper Jurassic marls and Paleogene shale, among which, the Upper Jurassic Kimmeridgian Malmian marls are considered to be the major source rocks. Reservoirs occur at various horizons from Triassic to Neogene Miocene strata, among which, the most important reservoirs are Miocene sandstones that deposit in shallow-water delta environment and contain 76% of all reserves, and the minor reservoirs are the Triassic dolosparite. Neogene shales provide the regional top-seal. After evaluation, it is considered that Mesozoic allochthonous napps (flysch turbidite and Triassic dolomite) and Mesozoic autochthonous succession (the second and the third structural layer) are the most prospective for exploration.

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Emergy-Ecological Footprint Integrated Model for Eco-city Evaluation: A Case of Tianjin City
ZHANG Xuehua,LI Jian,ZHANG Hongwei
Acta Scientiarum Naturalium Universitatis Pekinensis   
Abstract555)            Save
In order to avoid some shortages of traditional ecological footprint model, the authors proposed an integrated model by using emergy theory, which is named as Emergy-Ecological Footprint Integrated Model. In ecological carrying capacity calculation, the proposed model adds the carrying capacity of actual product output and virtual product supply based on material input-output theory and people ’s innovation. In ecological footprint calculation, the proposed model considers waste ecological footprint into evaluation system. Finally, the proposed model is applied in Tianjin eco-city evaluation from 2001 to 2008. The calculating result shows that the ecological carrying capacity is higher than ecological footprint, and ecological surplus is in rising tendency which expresses that Tianj in is in sustainable state.
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Fractal Characteristic of Regional Economic Relation Intensity and It's Application in Western China
ZHANG Xuehua,GUO Huaicheng,ZHANG Hongwei
Acta Scientiarum Naturalium Universitatis Pekinensis   
Abstract783)            Save
Fractal method is introduced into the study of regional economy based on the analysis of human-environment complex system in western China. The spatial fractal characteristics are determined by the results from the economic relation intensity model. The economic relation intensities amongst different cities and counties in the Aikesu area are calculated and spatial distributions are analyzed, compared with the fundamental corresponding characteristics of self-affine fractal, thus providing guidance for the regional planning.
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