We measured geomagnetic secular variation in Lake Lisan sediments (paleo Dead Sea). More than 1500 oriented samples were collected from a 27.3-m section of alternating aragonite and detritus laminae in the Dead Sea basin ranging in age from 67 to 32 ka. The natural remanent magnetization (NRM) is carried by titanomagnetite in the detrital laminae whereas the aragonite is diamagnetic. The NRM is...

Several regional secular variation curves of the geomagnetic field have been proposed for Mexico over last millennia. Despite a fairly large number archeomagnetic data, these remain imprecise because an uneven quality and geographic distribution, with lack data in Northern Mexico. Nine pottery kilns were sampled Casas de Fuego, archeological site Chihuahua state. These belong to Grandes culture...

To provide new insights into the evolution of kimberlitic magmas, we have undertaken a detailed petrographic and mineralogical investigation highly evolved carbonate–phlogopite-bearing kimberlites Kepino cluster, Arkhangelsk kimberlite province, Russia. The are represented by volcanoclastic breccias massive macrocrystic units within pipes as well coherent porphyritic sills. from similar in petr...

The studies on the use of municipal wastewater sludge as an unconventional chemical ameliorant with a fertilizing effect were carried out ore dressing waste ("tailings") apatite-nepheline plant ANOF-2 KF JSC "Apatit" predominance nepheline sands in their composition. tailings dump is included list objects accumulated environmental damage region, but due to its rich mineral composition, it recog...

In anisotropic materials such as minerals and rocks, the AC magnetic susceptibility is also anisotropic, consists of two components, one in-phase with applied field (ipMS) other out-of-phase (opMS). Correspondingly, anisotropies these anisotropy (ipAMS) (opAMS), can be defined. non-conductive dia- paramagnetic materials, in pure multi-domain magnetite, opMS effectively zero only ipAMS measured....