The Tracer Additions for Spiraling Curve Characterization (TASCC) model has been rapidly adopted to interpret in-stream nutrient spiraling metrics over a range of concentrations from breakthrough curves (BTCs) obtained during pulse solute injection experiments. TASCC analyses often identify hysteresis in the relationship between and concentration as BTCs rises falls. mechanisms behind these pat...

Timescales of magma transfer and differentiation processes can be estimated when the mechanism is known. When conventional major trace element analyses fail to distinguish between various differentiation, isotope compositions useful. Lower Th ratios in silicic relative basaltic magmas at a given volcano could result from storage over period several tens thousands years, or if process was fracti...