A facies model for a submarine volcaniclastic apron: the Miocene Manukau volcanic complex, Northland, New Zealand

S. R. Allen; B. W. Hayward; E. J. Mathews

doi:10.1071/ASEG2006ab107

ISSN: 2202-0586
E-ISSN:

oa A facies model for a submarine volcaniclastic apron: the Miocene Manukau volcanic complex, Northland, New Zealand
Authors S. R. Allen^a, B. W. Hayward^b and E. J. Mathews^c
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^a Centre for Ore Deposit Research and School of Earth SciencesUniversity of Tasmania, GPO Box 252-79, Hobart, Tasmania, 7001, , Australia, [email protected] ^b Geomarine Research, 49 Swainston Rd, St Johns, Auckland, New Zealand, [email protected] ^c Geoscience Australia, P.O Box 378 Symonston, , ACT 2609, Australia, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2006, Issue ASEG2006 - 18th Geophysical Conference, Dec 2006, p. 1 - 2
DOI: https://doi.org/10.1071/ASEG2006ab107
- Published online: 01 Dec 2006

Abstract

The Manukau Subgroup, New Zealand comprises a Miocene submarine volcaniclastic apron consisting of the products eroded and erupted from a large offshore partially emergent basaltic to andesitic volcanic complex. The submarine volcaniclastic apron is well exposed for over 30 km along the coast. The apron records the depositional history of a marine basin at bathyal water depths and the onset of fan progradation due to volcanism. The exceptional exposure, variation in fan architecture (distal, lobe, upper slope and channel), facies (e.g. sandstone, pumice breccias, conglomerates and pillow lavas) and origin (primary, resedimented or epiclastic), allows analysis of a fades model for submarine volcaniclastic fans. The fades analysis shows that submarine volcaniclastic fans differ from other clastic sedimentary fan models in the origin, supply and types of clasts.

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2006-12-01

2026-01-15

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References

Davey, F. 1974, Magnetic anomalies off the west coast of Northland, New Zealand. Journal of the Royal Society of New Zealand 4: 203-216.
Hayward, B. W. 1976, Lower Miocene geology and sedimentary history of the Muriwai-Te Waharoa coastline, North Auckland, New Zealand. New Zealand Journal of Geology and Geophysics 19: 639-662.
Hayward, B. W. 1977, Lower Miocene corals from the Waitakere Ranges, North Auckland, New Zealand. Journal of the Royal Society of New Zealand 7: 99-111.
Hayward, B. W. 1993, The tempestuous 10 million year life of a double arc and intra-arc basin - New Zealand’s Northland Basin in the early Miocene. In: P. F. Ballance, ed. South Pacific Sedimentary Basins. Basins of the World. Amsterdam, Elsevier. pp. 113-142.
Hayward, B. W., Buzas, M.A. 1979, Taxonomy and paleoecology of early Miocene benthic forarninifera of northern New Zealand and the north Tasman Sea. Smithsonian Contributions to Paleobiology 36.
Isaac, M. J., Herzer, R.H., Brook, F.J., Hayward, B.W. 1994, Cretaceous and Cenozoic sedimentary basins of Northland, New Zealand. Institute of Geological and Nuclear Sciences Monograph 8.
Sigurdsson, H., Sparks, R. S. G., Carey, S. N., Huang, T. C. 1980, Volcanogenic sedimentation in the lesser Antilles. Journal of Geology 88: 523-540.

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Article Type: Research Article

Keyword(s): basaltic-andesite volcanic complex; conglomerate; facies analysis; pillow lava; pumice; submarine fan; volcaniclastic apron

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oa A facies model for a submarine volcaniclastic apron: the Miocene Manukau volcanic complex, Northland, New Zealand

Abstract

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