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8.228  Articles
1 of 824 pages  |  10  records  |  more records»
The allophane is a natural nanoparticle present in soils from volcanic origin such as andisols, which are distributed worldwide, especially in countries that have active volcanoes. In Ecuador, andisols are in high and humid areas from the Highland/North r... see more

Lakes located downwind of active volcanoes serve as a natural repository for volcanic ash (tephra) produced during eruptive events. In this study, sediment cores from four lakes in Cajas National Park, southern Ecuador, situated approximately 200 km downw... see more

Successful mitigation of a possible volcanic disaster depends upon the early detection of renewed volcanic activity. With considerable optimism, volcano observatories instrument dangerous volcanoes, with the hope of an early recognition of the reactivatio... see more

ABSTRACT. Miocene to Holocene volcanic rocks of Chimborazo and associated volcanoes in the Western Cordillera of Ecuador range in composition from basaltic andesite to rhyolite. They were erupted through Cretaceous accretionary mafic basement. Three calk-... see more

This survey is a preliminary, comparative study of the phyto-ecologic features of two great types of ecosystems of the Andes mountain range.It deals with the Chilean "puna" in northern Chile (volcanic region of the Pallachatas, lsluga, Guallatire, and Col... see more

ResumenEste artículo forma parte de un estudio más amplio enfocado en la gestión del riesgo de desastres y su relación con las áreas urbanas. Distintas ciudades del mundo se ven afectadas de manera reiterada por la ocurrencia de eventos de origen natural ... see more

Varios de los países latinoamericanos presentan algunas de las cifras más altas del mundo sobre violencia de género: las circunstancias históricas, culturales, políticas y socioeconómicas determinan fuertemente la construcción de unos imaginarios donde pr... see more

The Andean volcanic arc includes over 200 potentially active Quaternary volcanoes, and at least 12 giant caldera/ignimbrite systems, occurring in four separate segments referred to as the Northern, Central, Southern and Austral Volcanic Zones. Volcanism r... see more

INTRODUCTION. On May 17, at about 6:00 a.m., the Llaima volcano began a strombolian eruption, 10 years since the last short phreatomagmatic eruption (April 1984). The Llaima volcano is a complex composite-shield volcano, with a buried caldera and 40 paras... see more

1 of 824 pages  |  10  records  |  more records»