Volcanic traces

Volcanic Eruptions

Water in volcanic glass: From volcanic degassing to secondary hydration

Volcanic glass is deposited with trace amounts (0.1–0.6 wt.%) of undegassed magmatic water dissolved in the glass. After deposition, meteoric water penetrates into the glass structure mostly as molecular H2O. Due to the lower dD (‰) values of non-tropical meteoric waters and the 30‰ offset between volcanic glass and environmental water during hydration, secondary water imparts lighter hydrogen ...

Minerals in Volcanic Ash 1: Primary Minerals and Volcanic Glass

Volcanic ash is fragments of magma, and consists of minerals and volcanic glass. These materials in the ash can provide important information on the nature of the magma, because chemical compositions of magma usually show distinct features in each volcano, and because assemblages and compositions of minerals reflect their host melt. Using assemblages and chemical compositions of minerals and gl...

Acquiring Experiential Traces 1 Running Head: Acquiring Experiential Traces Acquiring Experiential Traces in Word-referent Learning

National Institute of Mental Health grant MH-63972, and NSF grant BCS-0446637. We would like to thank Malte Elson, Christopher Morris, and Helena Yardley for their help in collecting data. Acquiring experiential traces 2 Abstract Two experiments investigated the activation of perceptual representations of referent objects during word processing. In both experiments, participants learned to asso...

Video Traces

Michael N. Nunes Department of Computer Science University of Calgary [email protected]