We conducted chemical and isotopic analyses to develop and test a hydrogeological model of thermomineral water circulation in a limestone aquifer system at Caldas da Rainha (Central Portugal), contributing to future borehole-drilling and development strategies, with the aim of extracting waters with the best possible flow and/or temperature. The thermomineral waters (T approximately 33 degrees ...

One cannot help being impressed by the wonderful arrays of seismograms depicted in Mr. Ellsworth's paper and in the prepared discussions. The regularity of the time intervals of successive impulses and the alternating sequence of the change of phase are readily adapted to a mechanism of multiple reflections. If the latter is accepted, the following questions seem to merit some consideration: (a...

A structural investigation of the well-exposed northern and western parts of the Vredefort dome has established the geometry and chronology of pre-, syn-and post-impact deformation features. The strata display a crude polygonal geometry with zones of complex monoclinal or symmetric folding, and radial oblique-slip faulting separating relatively straight segments. Pseudotachylitic breccia is ubi...

Lateral spread and submarine creep are processes that occur near the headwalls of both terrestrial landslides mass-transport complexes (MTCs). Both deposits may contain giant (km-scale) coherent blocks, but their transport remain poorly constrained. Here we use seismic reflection data to determine geometry, scale, origin a Late Miocene complex (MTC) located in Kangaroo Syncline, offshore NW Aus...

In this study, we focused on the formation and preservation processes of colluvial sedimentary breccias within an extensional context. The studied in work (from Crete Pyrenees) are characterized by poorly sorted polygenic deposits highly angular carbonate clasts whose size ranges from pebbles to blocks measuring several millimeters meters. This study shows that were formed during tectonics spat...

The paper is devoted to the influence of curvilinear reflection boundaries on kinematic and dynamic 1haracteristics reflected seismic waves. First all, describes major reasons low geological efficiency CDP survey in areas Azerbaijan, characterized by complex surface deep environmental features this aspect, special attention paid boundaries. displays statistical data for Shamakhy-Gobustan provin...

Fault throw gradients create transverse folding, and this can influence accommodation creation sedimentary routing infill patterns in extensional half-graben basin. The Fanja basin (Oman) offers an excellent outcrop of alluvial fan succession displaying cyclical stacking basin-scale growth-fold patterns. These unique conditions allow for investigation fault-timing development related to fault-t...

The Broken Hill Block contains the Paleoproterozoic Willyama Supergroup, host to world-renowned lead–zinc–silver deposits known as Line of Lode. A new large-scale geological structural interpretation has been developed based on construction 11 regional-scale cross-sections and one longitudinal section. Over an extended period major folding during Olarian Orogeny, two distinct sets regional fold...