Olivine-melt relationships and syneruptive redox variations in the 1959 eruption of Kīlauea Volcano as revealed by XANES von Helz, R.T., Cottrell, E., Brounce, M.N., Kelley, K.A.

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Behavior of PGEs and Re in Kilauea Iki lava lake, Hawaii von Helz, R.T., Pitcher, L., Walker, R.J.

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Petrology, mineralogy and evolution of the Jan Mayen Magma System von Helz, R.T.

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Igneous petrology von Helz, R.T.

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Igneous petrology: by Charles J. Hughes. Developments in Petrology, 7, Elsevier, Amsterdam, 1982, xvi + 552 pp., US $32.50, Dfl. 70.00 (clothbound) von Helz, R.T.

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Petrology, mineralogy and evolution of the Jan Mayen Magma System: Pall Imsland, Visindafelag Islendinga, Rit, 1984, 332 pp., $29.00 von Helz, R.T.

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News Reports von Riggs, S.R., Burnett, W.C., Fuchs, K., Monger, J.W.H., Helz, R.T., Einarsson, Pall, Papunen, H., Naldrett, A.J.

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