The Mediterranean Sea has been attracting the attention of numerous geoscientists from various countries and institutions for many years. A complex succession of geodynamic processes interplayed between Africa, Eurasia and the interposed ocean basins has characterized the geological history of the Mediterranean and surrounding regions, with ocean basin openings, plate and crustal block detachments, subductions, collisions, crustal extensions and contractions, arc and back-arc basin formation. In summary, in the Mediterranean area, on a regional scale, the imprint of all those significant plate-tectonics-related events observed on the larger global scale can be recognized. <...>

The 3rd Workshop of the Working Group on Lower Cretaceous Cephalopods gave us the opportunity to meet again some old friends and particularly to compare with them the Lower Cretaceous ammonite biostratigraphy of Umbria-Marche Apennines with the successions described in other countries.
The meeting was organized in the Apennines, close to the outcrops, in a small, peaceful town of the Marche region where we forgot the typical "stress" of the big cities (noise, traffic jams, pollution). This pleasant atmosphere aroused a stimulating and productive workshop.

Приводится характеристика наиболее существенных сторон геологии, минералогии, геохимии и методов оценки важнейших типов урановых месторождений, составленная ведущими учеными США, Италии и Франции. Описываются поведение урана в различных зонах земной коры, образование урановых месторождений в связи с эволюцией земной коры во времени и пространстве, формы миграции к концентрации урана при образовании промышленных месторождений, а также вторичное изменение урановых руд вблизи поверхности земли.
Для геологов, минералогов и геохимиков, изучающих месторождения урана.