Lab Work on Mafic Dikes Will Reveal Magma Storage Depth

Vogt Scholar Rachel Sweeten reports: “This year we were able to successfully locate another ~30 dikes as well as a potential layered mafic intrusion exposure (middle photo) with an inferred 600 cubic km volume. Lab work will continue this fall and winter in the form of clinopyroxene thermobarometry (to determine storage depth) as well as the full suite of XRF [X-ray fluorescence] and ICPMS [Inductively Coupled Plasma Mass Spectrometry] analysis of all new samples.” Photo on right is of field assistant Heather Ziff next to a large boulder of the upper portion of the layered intrusion that fell to the bottom of the slope as a result of a rockfall.