The way in which strands of uncertain volcanological evidence can be used for decision-making, and the weight that should be given them, is a problem requiring formulation in terms of the logical principles of Evidence ...

This study presents new geochemical data for Mutnovsky Volcano, located on the volcanic front of the southern portion of the Kamchatka arc. Field relationships show that Mutnovsky Volcano is comprised of four distinct ...

Two apparently distinct, sub-parallel, paleo-subduction zones can be recognized along the northern margin of the Tibetan Plateau: the North Qilian Suture Zone (oceanic-type) with ophiolitic mélanges and high-pressure ...

The magmatic processes leading to porphyry-Cu mineralization at Santa Rita are reconstructed on the basis of petrographic studies, thermobarometry, and laser-ablation inductively-coupled-plasma mass-spectrometry analyses ...

In the Early Cambrian, there were two peaks of the increase in number of new archaeocyathan genera. These diversification bursts are, perhaps, related to significant changes in Early Cambrian palaeogeography. The first ...

Analysis is performed on the formation of the main types of the Precambrian benthic vegetation, i.e., cyanobacterial mats and other types of the cyanobacterial vegetation; tangles and feltlike bodies of filamentous algae ...

The evolutionary history of six genera of Early Triassic Boreal Dinaritaceae (Hypophiceras, Tompophiceras, Metophiceras, Sakhaitoides, Sakhaites, and Kelteroceras) is discussed, and patterns and pathways of their evolutionary ...

Proto-, para-, and euconodonts are characterized, and their stratigraphic significance is evaluated. General evolutionary trends and stages of development are depicted for the Proconodontus, Teridontus, and Hirsutodontus ...