I served as an assistant investigator on a three-year project (2009-2012) to study pit craters along the Great Crack, Southwest Rift, Hawaii-Volcanoes National Park on the Big Island, Hawaii.  Our objectives were to: (i) characterize thermal behavior of these features; (ii) determine whether the data permits us to discern pit craters with verses without cave entrances; and, (iii) relate the data collected and inferences gained into better understanding pit craters discovered in the Tharsis Region on Mars.  Currently, data from this project are being analyzed.  This project was funded through NASA’s Exobiology Program.

Publications & Reports

Halliday, W., D. Bunnell, L. Keszthelyi, G. Middleton, C. Okubo, J. Wynne, and G. Favre. 2012. Martian Lava Tube Caves and Mega-Caves Revisited, Abstract #114, Geological Society of America Annual Meeting (4-7 November 2012),
Charlotte, North Carolina.

Halliday, W. R., J. J. Wynne, J. J. Pint, and C. H. Okubo. 2010. Linear and Arcuate Cavernous Landforms of Mars and Earth as Habitation Sites and Refugia: Some Opportunities and Constraints:  Abstract 177716, Vol. 42, No. 5, Geological Society of America Annual Meeting (31 October – 03 November), Denver Colorado.

Halliday, W.R., C.H. Okubo, S. Kempe, M. Garman, S. Garman, and J. J. Wynne. 2009. Rheogenic Caves and Cavernous Structures of Kalaupapa Peninsula, Molokai Island, Hawaii, USA:  A Mars Analog Revisited, Abstract #159718, Geological Society of America Annual Meeting (18-21 October 2009),
Portland, Oregon.

Halliday, W. R. and J. J. Wynne. 2008. Differentiating Lava Tube Skylights from Pit Craters: A Study of the Cave-Like Structures on Arsia Mons, Mars, Abstract # 133859, In 104th Cordilleran Section and 60th Rocky Mountain Section Joint Meeting, Geological Society of America, Las Vegas, NV, GSA Abstracts Vol. 40 (1).