Results 51 to 60 of about 575 (118)
THE LATE TRIASSIC-HETTANGIAN BIVALVES TURNOVER IN LOMBARDY (SOUTHERN ALPS)
One of the major mass extinctions of the Phanerozoic took place at the Rhaetian-Hettangian boundary. According to some researchers, it might have been preceded by a minor event at the end of the Carnian. The faunal association present in the Late Trixsic
ANDREA ALLASINAZ
doaj +1 more source
Abstract We describe a high‐diversity silicified assemblage of marine molluscs (Pelsa‐Vazzoler Lagerstätte) from the upper Ladinian of the Agordo Dolomites (northeastern Italy). New data on the Triassic rebound, after the end‐Permian mass extinction, constrain it to an interval of relatively stable climatic conditions.
Stefano Dominici +2 more
wiley +1 more source
Co‐precipitation of primary dolomite and Mg‐rich clays in Deep Springs Lake, California
ABSTRACT In contrast to the prevalence of dolomite [CaMg(CO3)2] in the geological record, there are few instances of recent formation. This discrepancy occurs despite supersaturation with respect to dolomite in many modern marine and lacustrine environments.
Franklin W. C. Hobbs +4 more
wiley +1 more source
Degradación y durabilidad de materiales rocosos de edificación en ambientes urbanos [PDF]
This paper studies the effect of some pollutant agents in urban environments -gaseous SO2, acid rain and solid particles- on carbonate and siliceous building stones with different petrophysic characteristics.
C. M. Grossi +5 more
core +1 more source
TIPOS DE LAPIAZ EN UN KARST MEDITERRANEO DE MONTAÑA (SIERRA DE SEGURA, JAÉN)
La importancia de los procesos y formas kársticas en las Cordilleras Béticas ha sido subrayada por numerosos autores. Estos relieves son muy favorables a la karstificación al estar constituidos por series sedimentarias esencialmente calcáreas. La Sierra.
Begoña López Limia +1 more
doaj
En este artículo se presentan los resultados obtenidos del análisis tecno-morfológico y tecnológico efectuado sobre el conjunto lítico proveniente de recolecciones superficiales en distintos sectores del sitio Laguna La Huinca, ubicado en la cuenca media
María José Colantonio Gonard
semanticscholar +1 more source
Abstract The Eastern Southern Alps fold‐and‐thrust belt (ESA) is part of the seismically active S‐verging retro‐wedge of the European Alps. Its temporal tectonic evolution during continental shortening has so far been constrained by few and low‐resolution indirect time constraints.
Manuel Curzi +7 more
wiley +1 more source
In this article, the results of a treatment applied to dolomitic stones using an isopropyl colloidal solution based on calcium hydroxide nanoparticles with a concentration of 2.0g/l are presented.
Fort, R. +4 more
doaj +1 more source
Aplicación de la Tomografía Axial Computerizada de Rayos X al estudio de materiales rocosos [PDF]
Se han sometido muestras de la dolomía de Laspra (una de las rocas utilizadas en la construcción de la Catedral de Oviedo) a ciclos de hielo-deshielo con el fin de estudiar la aplicabilidad de la tomografía axial computerizada de rayos X al estudio de ...
Rodríguez Rey, Angel +5 more
core +2 more sources
Mesozoic gliding and Tertiary basin and range tectonics in eastern Sonora, Mexico
En el oriente de Sonora, México, se encuen-tran bien preservadas en rocas del Cretácico Superior de la región de Arivechi, estructuras de deformación compleja asociadas a movi-mientos verticales y actividad gravitacional como deslizamientos.
José Luis Rodríguez Castañeda +2 more
doaj +1 more source

