Understanding volcanic facies in the subsurface : a combined core, wireline logging and image log data set from the PTA2 and KMA1 boreholes, Big Island, Hawaii

Data availability. A digital archive of core photos and detailed core run depth log information is available at https://www.higp.hawaii.edu/hggrc/projects/humuula-groundwater-research-project/(HGGRS, 2019). The down-hole data are published with a digital object identifier via GFZ Data Services (Kück, 2019). Acknowledgements. This project was made possible by the collaborative outlook of the main partners (VBPR and DougalEARTH, GFZ, and the University of Hawai‘i) and the extensive background work undertaken by the researchers at the Hawai‘i Groundwater and Geothermal Resources Center (University of Hawai‘i) and from the HGRP project. Jehanne Paris is thanked for helping organize the logging operations and helping in the field. Martin Töpfer and Marco Groh (Operational Support Group, OSG, of ICDP, GFZ) are thanked for ensuring the smooth running of the logging operations. Dougal Jerram and Sverre Planke are also supported by the Research Council of Norway, through its Centres of Excellence funding scheme, project 223272 at CEED, University of Oslo. We would like to thank Breno Waichel and John Shervais for constructive reviews and the editorial team at Scientific Drilling for their prompt handling and meticulous guidance through the various stages from submission to publication.Peer reviewedPublisher PD