The alkali-silica reaction has been studied in depth due to the evolution knowledge of expansive phenomenon. One its most important aspects is rate aggregates. In Spain, at early 90s 20th century, aggregates were considered almost non-reactive. However, use accelerated curing and other environmental factors revealed that there potentially reactive siliceous Nevertheless, are several limestone w...

The grandest geotourism attractions in the southern hemisphere, nineteenth century, were siliceous Pink and White Terraces, lost New Zealand Eighth Wonder of World.

Abstract Some geochemical models for basaltic and more primitive rocks suggest that their parental magmas have assimilated tens of weight percent crustal silicate wall rock. But what are the thermodynamic limits assimilation in magmas? We pursue this question quantitatively using a freely available tool phase equilibria modeling open magmatic systems—the Magma Chamber Simulator (https://mcs.geo...

In order to reveal the mineral filling sequence and fluid action process in dissolution pores of bedded siliceous rocks Dongrong Formation Sanjiang Basin, petrological characteristics, geochemical analysis testing methods were comprehensively applied research, databases major amount rare earth elements established, sedimentary environment, origin source materials systematically judged again. Th...

This study investigated, in detail, the characteristics of Late Triassic fine-grained sediments third member Xujiahe Formation (Xu-3 Member), Western Sichuan Depression, and paleoenvironmental evolution during their deposition through petrological interpretation, mineralogical composition characterization, element geochemical analysis. According to composition, Xu-3 Member can be divided into t...