Volatiles are lost from the Earth's mantle to the atmosphere, hydrosphere and crust through
a combination of subaerial and submarine volcanic and magmatic activity. These volatiles …

Geothermal fluids and volcanic emissions are important sources of arsenic (As), resulting in
elevated concentrations of As in ground-, surface-water and soil, which may adversely affect …

Use of the concept of “sulfidation state,” in parallel with oxidation state, in the study of ore
deposits finds its beginnings with the studies of Reno Sales and Charles Meyer at Butte …

Some 300–600 Tg of volatiles are globally vented each year by arc volcanism. Such arc gas
emissions have contributed to past and present-day evolution of the Earth atmosphere and …

Cueva de Villa Luz, a hypogenic cave in Tabasco, Mexico, offers a remarkable opportunity
to observe chemotrophic microbial interactions within a karst environment. The cave water …

The first studies on sulfur isotope geochemistry were performed approximately sixty years
ago (eg, Thode et al. 1949; Trofimov 1949). Since these early measurements on terrestrial …

Numerous volcanoes, hot springs, fumaroles, and geothermal wells occur in the Pacific
region of Latin America. These systems are characterized by high As concentrations and …

Hypogene advanced argillic alteration, typically quartz-alunite with halos of kaolinite±dickite
and roots of pyrophyllite±diaspore, forms in the epithermal environment from condensates of …

This chapter describes the practice in the analysis and interpretation of noble gases in
modern hydrothermal systems, including sample collection and analytical methods …

Cueva de Villa Luz (aka Cueva de las Sardinas) in Tabasco, Mexico, is a stream cave with
over a dozen H2S-rich springs rising from the floor. Oxidation of the H2S in the stream …