This article reports data sets aimed at the development of a detailed feature-space representation for a complex natural category domain, namely 30 common subtypes of the categories of igneous, metamorphic, and sedimentary rocks. We conducted web searches to develop a library of 12 tokens each of the 30 subtypes, for a total of 360 rock pictures. In one study, subjects provided ratings along a ...

The Marun–Keu complex (Polar Urals, Russia) is a poorly known member of a group of high P complexes outcropping along the length of the Uralide orogen. The central and southern parts of the complex are metamorphosed at high P, medium T conditions (Tmaxf600–650 jC and Pf14–17 kbar) and differ from its northern part and the rest of the Uralian high P complexes which are metamorphosed at blueschis...

Introduction: Venus once had substantially more water and possibly even oceans early in its history. Given the close proximity of Venus and Earth, the planets could have accreted comparable amounts of volatiles. The high D/H ratio in the atmosphere of Ve-nus implies an elevated water abundance earlier in the history of Venus [1,2]. This water was lost by mechanisms that may have involved evapor...

Natural radioactivity is the main source of radiation which affects the human body [1]. Anthropogenic activities (e.g. high-altitude fl ights, mining and living in buildings) have increased the exposure to these sources [2]. In particular, the problem of natural radioactivity in buildings is of great interest since the building materials are of terrestrial origin and they consequently contain s...