Science Advances

Supplementary Materials

The PDF file includes:

  • Fig. S1. Age spectra and isochron diagrams of legacy and new 40Ar/39Ar experiments.
  • Fig. S2. Stratigraphic relationship of 34 lava flows of the lava sequence in the northern wall of Punaruu Valley, Tahiti, that are based on the field observations of Mochizuki et al. (16).
  • Fig. S3. AF demagnetization results for flow A27 in Balbas et al. (36), supplementary file, p. 29.
  • Fig. S4. AF demagnetization results for flow site A27 (sample TM23-5-1) in Mochizuki et al. (16).
  • Fig. S5. AF demagnetization results for flow site B1 (sample TM32-9-1) in Mochizuki et al. (16).
  • Fig. S6. AF demagnetization results for flow site B1 in Balbas et al. (36), supplementary documents. p. 32.
  • Fig. S7. Comparison of WiscAr ages and the plateau ages determined by Balbas et al. (36) using a multicollector mass spectrometer with Faraday detectors (uncertainties are ±2σ analytical).
  • Fig. S8. Cumulative probability distribution of 40Ar/39Ar dates.
  • Fig. S9. An example of Tsunakawa-Shaw paleointensity result (sample 85M033-11 from Haleakala flow unit number 53, which is field site 26 in Fig. 1) that meets criteria A.
  • Fig. S10. An example of Tsunakawa-Shaw paleointensity result (sample H-15-27A-12 from Haleakala flow unit number 59, which is lava site no. 27A in Fig. 1) that meets criteria B.
  • Fig. S11. Paleointensity estimates from lava flows of the lava sequence in Haleakala caldera on Maui.
  • Fig. S12. Representative thermomagnetic curves.
  • Table S1. Typical system blanks for legacy dates and Noblesse multicollector dates.
  • Table S2. Results of Tsunakawa-Shaw paleointensity experiments on samples from the lava sequence of Haleakala caldera on Maui.
  • Table S3. Summary of absolute paleointensity estimates from the lava sequence of Haleakala caldera, Maui.
  • Table S4. Summary of relative paleointensity estimates from the lava sequence of Haleakala caldera, Maui.

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Other Supplementary Material for this manuscript includes the following:

  • Data S1 (Microsoft Excel format). Table of complete 40Ar/39Ar results.
  • Data S2 (.pdf format). Age spectrum and isochron plots of 40Ar/39Ar results.

Files in this Data Supplement: