Whole-rock analyses (XRF and ICP-MS) from Dorado (2024) - PhD Thesis

Raw bulk rock geochemical dataset that comprises major, minor, and trace element analyses of samples collected during field campaigns in Tenerife, mostly on the active Teide-Pico Viejo volcanic system and the proximal eruptions of the Santiago rift. 5 additional samples were collected from vents in the south of Tenerife. Information about the samples can be found in Dorado (2024). 

XRF analyses were conducted using a Thermo-ARL automated XRF spectrometer at the Peter Hooper GeoAnalytical Lab, Washington State University. Standard procedures included the use of a Rhodium target operated at 50 kV and 50 mA with full vacuum, and a 25 mm mask. Calibration was verified against certified reference materials (AGV-2, BCR-2, and GSP-2), ensuring precision within expected uncertainties (see Johnson et al., 1999). Loss on Ignition (LOI) was determined by heating powdered samples at 900°C for ~16 hours.

ICP-MS were performed using an Agilent 4500 ICP-MS also at the Peter Hooper GeoAnalytical Lab, with a final dilution factor of 1:4800. Internal standards (Ru, In, and Re) were employed to correct instrumental drift, while Rare Earth Element (REE) standardisation utilised a linear interpolation method (Doherty, 1989). To mitigate isobaric interference from light rare earth oxides on mid-heavy REEs, the tuning is optimised to keep the CeO/Ce ratio below 0.5%. To compensate for other oxide interferences,correction factors are applied, estimated using two mixed-element solutions (the first containing Ba, Pr, and Nd, and the second Tb, Sm, Eu, and Gd). Finally, standardisation is achieved by processing duplicate Certified Reference Materials (CRM) from the laboratory (see Steenberg et al., 2017 for more information).

Please cite: Dorado, O. (2024). Modelling the eruptive and pre-eruptive dynamics on Teide-Pico Viejo complex (Doctoral dissertation, University of Barcelona)

References from the analytical methods:

Doherty, W. (1989). An internal standardization procedure for the determination of yttrium and the rare earth elements in geological materials by inductively coupled plasma-mass spectrometry. Spectrochimica Acta Part B: Atomic Spectroscopy, 44(3), 263–280.

Steenberg, L., Boroughs, S., & Knaack, C. (2017). Estimation of accuracy and precision for trace elements analyzed by inductively coupled plasma mass spectrometry (ICP-MS) at the Peter Hooper Geoanalytical Laboratory, Washington State University. Geological Society of America, Abstracts with Programs, 49, 63–69.