John S. Armstrong-Altrin

Tracing source and paleoweathering conditions of the lower jurassic sandstone from sierra de santa rosa section, Northern Sonora, México

The Lower Jurassic sedimentary rocks of the Sierra de Santa Rosa Formation in northern Sonora, Mexico has been deposited in a forearc basin and its age has been assigned based on the fossil assemblages and detrital zircon U–Pb geochronology data. Neverthless, their geochemical ch...