Currently, the lower Paleogene Wenchang formation in Lufeng Depression is primary focus of reservoir development. The structural fractures that have formed inside it not only serve as principal path for oil migration, but also storage space. As a result, distribution features are crucial future petroleum exploration and development Depression. At same time, with quantity conventional reservoirs...

An ongoing enigma for the standard geological community is why all the high mountain ranges of the world—including the Himalayas, the Alps, the Andes, and the Rockies—experienced most of the uplift to their present elevations in what amounts to a blink of the eye, relative to the standard geological time scale. In terms of this time scale, these mountain ranges have all undergone several kilome...

Relief wells are used extensively to relieve excess hydrostatic pressure in pervious foundation strata overlain by impervious top strata, conditions which often exist landward of levees and downstream of dams and hydraulic structures. Placing well outlets in below-surface trenches or collector pipes helps dry up seepage areas downstream of levees and dams. Relief wells are often used in combina...

We appreciate the comments made by Tashkin et al regarding the limited generalisability of the Understanding Potential Long-term Impacts on Function with Tiotropium (UPLIFT) findings. In response, the sample we studied was not designed to be representative of the general chronic obstructive pulmonary disease (COPD) population, but rather the subgroup of patients with severe COPD who are likely ...

[1] The western Andean mountain front forms the western edge of the central Andean Plateau. Between 18.5 and 22 S latitude, the mountain front has 3000 m of relief over 50 km horizontal distance that has developed in the absence of major local Neogene deformation. Models of the evolution of the plateau, as well as paleoaltimetry estimates, all call for continued large-magnitude uplift of the pl...

Six localities in the lower Chinle Group of central New Mexico yield a tetrapod fauna consisting of the diminutive metoposaurid cf. Apachesaurus sp., and indeterminate large metoposaurids (probably Buettneria sp.), the phytosaur Rutiodon sp., indeterminate phytosaurs, the aetosaurs Desmatosuchus sp. and cf Stagonolepis sp., a probable theropod, and other, indeterminate archosaurs. Five of these...

www.sciencemag.org (this information is current as of June 5, 2007 ): The following resources related to this article are available online at http://www.sciencemag.org/cgi/content/full/313/5792/1419 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/313/5792/1419/DC1 can be found ...

The Upper Mississippi Embayment (UME), where the seismically active New Madrid Seismic Zone resides, experienced two phases of subsidence commencing in the Late Precambrian and Cretaceous, respectively. To provide new constraints on models proposed for the mechanisms responsible for the subsidence, we computed and stacked P-to-S receiver functions recorded by 49 USArray and other seismic statio...