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31.
溱潼凹陷边城-叶甸地区构造解释及储层预测 总被引：1，自引：0，他引：1
通过使用Landmark软件包的合成地震记录、相干技术对溱潼凹陷边城—叶甸地区地震资料进行精细构造解释，应用Gridstatpro油藏描述技术对储层进行预测。分析了该区虽多口钻井油气显示活跃，但并未发现工业油流的原因，在此基础上，进一步落实了局部构造，优选出可供上钻的有利圈闭3个。 相似文献
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The Gao‐Guenie impact melt breccia—Sampling a rapidly cooled impact melt dike on an H chondrite asteroid? 
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下载免费PDF全文 Martin Schmieder David A. Kring Timothy D. Swindle Jade C. Bond Carleton B. Moore 《Meteoritics & planetary science》2016,51(6):1022-1045
The Gao‐Guenie H5 chondrite that fell on Burkina Faso (March 1960) has portions that were impact‐melted on an H chondrite asteroid at ~300 Ma and, through later impact events in space, sent into an Earth‐crossing orbit. This article presents a petrographic and electron microprobe analysis of a representative sample of the Gao‐Guenie impact melt breccia consisting of a chondritic clast domain, quenched melt in contact with chondritic clasts, and an igneous‐textured impact melt domain. Olivine is predominantly Fo80–82. The clast domain contains low‐Ca pyroxene. Impact melt‐grown pyroxene is commonly zoned from low‐Ca pyroxene in cores to pigeonite and augite in rims. Metal–troilite orbs in the impact melt domain measure up to ~2 mm across. The cores of metal orbs in the impact melt domain contain ~7.9 wt% of Ni and are typically surrounded by taenite and Ni‐rich troilite. The metallography of metal–troilite droplets suggest a stage I cooling rate of order 10 °C s?1 for the superheated impact melt. The subsolidus stage II cooling rate for the impact melt breccia could not be determined directly, but was presumably fast. An analogy between the Ni rim gradients in metal of the Gao‐Guenie impact melt breccia and the impact‐melted H6 chondrite Orvinio suggests similar cooling rates, probably on the order of ~5000–40,000 °C yr?1. A simple model of conductive heat transfer shows that the Gao‐Guenie impact melt breccia may have formed in a melt injection dike ~0.5–5 m in width, generated during a sizeable impact event on the H chondrite parent asteroid. 相似文献
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Poor air quality has long been one of the dominant transboundary issues facing protected areas worldwide. In 1977, the United States Congress amended the Clean Air Act to address federally-managed lands containing valued air resources (i.e. scenic views). Forty years later, we interviewed professionals from the U.S. National Park Service, Forest Service, and Bureau of Land Management (n=38) regarding their perceptions of the legacy of the Clean Air Act and other federal policies relevant to air resources, as well as their perceptions of the future of air resource management on U.S federal lands. Results were analyzed using a Strengths, Weaknesses, Opportunities, and Threats (SWOT) analysis supported by in vivo, thematic, and salience coding. Our findings illustrate national progress in air resource management, potential policy directions, and highlight the influence of emerging technologies and governance in air resource management within protected areas. 相似文献
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Jade Georis-Creuseveau Christophe Claramunt Françoise Gourmelon 《International journal of geographical information science》2017,31(1):122-138
The continuous development of Spatial Data Infrastructures (SDI) provides a favourable context for environmental management and planning. However, it appears that the actual contribution of SDIs should also depend on the correlation between users’ expectations and the services delivered to them. Several studies have addressed some organizational, methodological and technological aspects of the development of SDIs. However, only a few studies have, to the best of our knowledge, studied SDI use at large. This article introduces a methodological approach oriented towards the study of the relationship between SDIs and the users interacting with them as part of their professional practices. Our study is applied to coastal zone management and planning in France. This approach combines structural and data flow modelling. The former is based on Social Network Analysis (SNA) and the latter on Data Flow Diagrams (DFD). This modelling approach has been applied to an online questionnaire and semi-structured interviews. The results identify the SDIs, geographical data flows and institutional levels implied in French coastal zone management and planning. 相似文献
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Bremer Leah L. Elshall Ahmed S. Wada Christopher A. Brewington Laura Delevaux Jade M.S. El-Kadi Aly I. Voss Clifford I. Burnett Kimberly M. 《Hydrogeology Journal》2021,29(5):1749-1765
Hydrogeology Journal - Groundwater sustainability initiatives, including sustainable yield and watershed policy protection policies, are growing globally in response to increasing demand for... 相似文献
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Malay Mukul Sridevi Jade Anjan Kumar Bhattacharyya Kuntala Bhusan 《Journal of the Geological Society of India》2010,75(1):302-312
Deformation in active mountain belts like the Himalaya is manifested over several spatial and temporal scales and collation
of information across these scales is crucial to an integrated understanding of the overall deformation process in mountain
belts. Computation and integration of geological shortening rates from retrodeformable balanced cross-sections and present-day
convergent rates from deforming mountain belts is one way of integrating information across time-scales. The results from
GPS measurements carried out in NE India indicate that about 15–20 mm/yr of convergence is being accommodated there. Balanced-cross
sections from the NE Himalaya indicate about 350–500 km of shortening south of the South Tibet Detachment (STD). Geothermobarometry
suggest that the rocks south of the STD deformed under peak metamorphic conditions at ∼ 22 Ma. This indicates a geological
convergence rate of ∼ 16–22 mm/yr which appears to be fairly consistent with the GPS derived convergence rates. Approximately
1.5 to 3.5 mm/yr (∼ 10–20 %) of the total N-S of the present-day convergence in the NE Himalaya is accommodated in the Shillong
Plateau. In addition, ∼ 8–9 mm/yr of E-W convergence is observed in the eastern and central parts of the Shillong Plateau
relative to the Indo-Burman fold-thrust belt. Balanced cross-sections in the Indo-Burman wedge together with higher resolution
GPS measurements are required in the future to build on the first-order results presented here. 相似文献
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对东泰气田Jp^1气藏拟定的两套开发方案从投资估算、盈利能力等技术经济角度出发，对两套开发方案进行了技术经济评价和对比分析，得出两套开发方案中更加合理的开发方案，对东泰气田蓬一气藏的勘探与开发提供了技术经济指导。 相似文献
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新场气田是四川盆地西部凹陷-典型多类型，多层系的低渗透-致密陆相碎屑岩气藏叠置而成的大气田，新场气田勘探开发各阶段中，充分应用DST测试，完井测试，压裂测试，生产试井等手段，通过对气藏（层）压力，气藏（层）温度及相应气层流体性质和流量等资料的分析来揭示气藏（层）特征及压裂开发效果是气田滚动开发较为有效的手段。 相似文献
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Paul A. Delcourt Hazel R. Delcourt Ronald C. Brister Laurence E. Lackey 《Quaternary Research》1980,13(1):111-132
Nonconnah Creek, located in the loess-mantled Blufflands along the eastern wall of the Lower Mississippi Alluvial Valley in Tennessee displays a sedimentary sequence representing the Altonian Substage through the Woodfordian Substage of the Wisconsinan Stage. The site has a biostratigraphic record for the Altonian and Farmdalian Substages that documents warm-temperate upland oak-pine forest, prairie, and bottomland forest. At 23,000 yr B.P., white spruce and larch migrated into the Nonconnah Creek watershed and along braided-stream surfaces in the Mississippi Valley as far as southeastern Louisiana. The pollen and plant-macrofossil record from Nonconnah Creek provides the first documentation of a full-glacial locality in eastern North America for beech, yellow poplar, oak, history, black walnut, and other mesic deciduous forest taxa. During the full and late glacial, the Mississippi Valley was a barrier to the migration of pine species, while the adjacent Blufflands provided a refuge for mesic deciduous forest taxa. Regional climatic amelioration, beginning about 16,500 yr B.P., is reflected by increases in pollen percentages of cooltemperate deciduous trees at Nonconnah Creek. The demise of spruce and jack pine occurred 12,500 yr B.P. between 34° and 37° N in eastern North America in response to postglacial warming. 相似文献
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