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KLAUS DUPHORN FRIEDRICH-C. KÖGLER BERND STAY 《Boreas: An International Journal of Quaternary Research》1979,8(2):137-140
Distribution, thickness, lithology and stratigraphy of varved clays are discussed. The sediments were deposited in the Baltic Ice Lake during the Late Weichselian. 相似文献
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KLAUS DUPHORN BERND STAY DIETMAR STILLER 《Boreas: An International Journal of Quaternary Research》1979,8(2):141-144
Results obtained by mapping and special varved clay investigation show that the so-called Northeastern ice advance (13,500 B.P.) and the Low Baltic readvance (13,000–13,200 B.P.) are separated by a significant deglaciation phase, for which we propose 'Lockarp Interstadial' (13,200-13,500 B.P.) as a time-stratigraphic term to be used in the type area of southwestern Scania. 相似文献
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Model-based inversion of seismic reflection data is a global optimization problem when prior information is sparse. We investigate the use of an efficient, global, stochastic optimization method, that of simulated annealing, for determining the two-way traveltimes and the reflection coefficients. We exploit the advantage of an ensemble approach to the inversion of full-scale target zones on 2D seismic sections. In our ensemble approach, several copies of the model-algorithm system are run in parallel. In this way, estimation of true ensemble statistics for the process is made possible, and improved annealing schedules can be produced. It is shown that the method can produce reliable results efficiently in the 2D case, even when prior information is sparse. 相似文献
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Fluid Evolution during HP and UHP Metamorphism in Dabie Shan, China: Constraints from Mineral Chemistry, Fluid Inclusions and Stable Isotopes 总被引:23,自引:1,他引:23
XIAO YILIN; HOEFS JOCHEN; VAN DEN KERKHOF ALFONS M.; SIMON KLAUS; FIEBIG JENS; ZHENG YONG-FEI 《Journal of Petrology》2002,43(8):1505-1527
The Dabie Shan ultrahigh-pressure (UHP) metamorphic terraneis located in the eastern part of the eastwest-strikingQinlingDabie orogenic belt in China. A major mylonitizedcontact zone of 200300 m width divides Dabie Shan intothe South Dabie Terrane (SDT) and the North Dabie Complex (NDC).Combined investigation of major and trace element geochemistry,fluid inclusions, and oxygen and hydrogen isotopes constrainsthe fluid history during the metamorphic evolution of the twometamorphic belts, which differ in their fluid and metamorphicevolution. Fluid inclusions in rocks from the SDT are mainlyaqueous with varying salinities, whereas those from the NDCare dominated by CO2. Low 相似文献