The Etive igneous complex has intruded into Dalradian and Moine meta-sedimentary rocks in Devonian. Main rock types of the complex are granodiorite, monzodiorite, monzogranite, granite and diorite. Geochemical studies show that the magmas were of high K calc-alkaline, I-type and metaluminous nature. Application of discriminant diagrams to the Etive rocks indicates a possible within-plate tecton...

Application of Microseismic Imaging to Improve Shallow Hydraulic Fractures The Stripper Well Consortium, a group with a mission to foster and transfer technologies that can help improve production from the nation’s many stripper wells, funded in part a project that combined a series of technical disciplines in an effort to improve stimulation effectiveness in shallow Devonian age reservoirs in ...

The closure time of the Shangdan Ocean is critical for understanding tectonic evolution Proto-Tethys Ocean. However, proposed was prolonged from Ordovician to Devonian. In present study, detrital zircon metasedimentary rocks Liba Group in West Qinling Belt analyzed constrain three youngest grains yield a maximum deposition age 418 ± 13 Ma, indicating Middle Devonian deposition. Detrital show tw...

We obtain a general form of the multivariate Rayleigh and exponential probability density functions (p.d.f.s) when these are generated by corre lated Gaussian random variables. A general expression for the exponential characteristic function (c.f.) is also derived.