The University of Southampton
University of Southampton Institutional Repository

Towed-camera investigations of shallow–intermediate water-depth submarine stratovolcanoes of the southern Kermadec arc, New Zealand

Towed-camera investigations of shallow–intermediate water-depth submarine stratovolcanoes of the southern Kermadec arc, New Zealand
Towed-camera investigations of shallow–intermediate water-depth submarine stratovolcanoes of the southern Kermadec arc, New Zealand
Southern Kermadec arc stratovolcanoes (of predominantly basaltic and andesitic composition) provide a depth transect of the transition between effusive and explosive submarine volcanism. Observations along 4.6 km of towed-camera track from the crests and upper flanks of the Clark and Rumble III volcanoes reveal a consistent pattern of substrate types that are interpreted to record effusive and explosive eruption processes. Below 700 m water depth, substrates are dominated by massive/blocky flows, pillow lavas, pillow and angular block talus, localized sheet flows, and minor granule-sand volcaniclastic detritus. The latter typically forms a substrate mode of 5–20%. Above 450 m, sand lapilli (that is in part winnowed and rippled), have a substrate mode of 50–100%, with minor components of massive flows, pillow lavas, and coarse talus. This difference in abundance of sand lapilli between 450 and 700 m is interpreted to record the transition between effusive and explosive (both phreatic and phreatomagmatic) eruptions. Between 600 and 700 m, a varied distribution of sand-lapilli abundance is interpreted as recording a mix of effusive and explosive eruptions, consistent with possible differences in the physical interaction of magma–water and known compositional magma heterogeneity.
Kermadec volcanoes, submarine volcanism, explosive volcanism, volcaniclastic depos
0025-3227
207-218
Wright, I.C.
be2a8931-3932-4f1e-b387-43e3652bf3fc
Stoffers, P.
b052b016-f465-428d-a8f1-ab4431c49a5a
Hannington, M.
ec84e346-06d7-4d00-8f6e-598ce6a2f0ce
de Ronde, C.E.J.
1b9222e8-63bf-4ae0-bc66-c496bc5e3e5f
Herzig, P.
e1750c7e-1937-48af-953a-98e601f828f1
Smith, I.E.M.
fa6c848c-28b5-4060-99c5-d3a5982eb052
Browne, P.R.L.
186f0042-b3b9-40d2-880b-454301888688
Wright, I.C.
be2a8931-3932-4f1e-b387-43e3652bf3fc
Stoffers, P.
b052b016-f465-428d-a8f1-ab4431c49a5a
Hannington, M.
ec84e346-06d7-4d00-8f6e-598ce6a2f0ce
de Ronde, C.E.J.
1b9222e8-63bf-4ae0-bc66-c496bc5e3e5f
Herzig, P.
e1750c7e-1937-48af-953a-98e601f828f1
Smith, I.E.M.
fa6c848c-28b5-4060-99c5-d3a5982eb052
Browne, P.R.L.
186f0042-b3b9-40d2-880b-454301888688

Wright, I.C., Stoffers, P., Hannington, M., de Ronde, C.E.J., Herzig, P., Smith, I.E.M. and Browne, P.R.L. (2002) Towed-camera investigations of shallow–intermediate water-depth submarine stratovolcanoes of the southern Kermadec arc, New Zealand. Marine Geology, 185 (3-4), 207-218. (doi:10.1016/S0025-3227(01)00285-7).

Record type: Article

Abstract

Southern Kermadec arc stratovolcanoes (of predominantly basaltic and andesitic composition) provide a depth transect of the transition between effusive and explosive submarine volcanism. Observations along 4.6 km of towed-camera track from the crests and upper flanks of the Clark and Rumble III volcanoes reveal a consistent pattern of substrate types that are interpreted to record effusive and explosive eruption processes. Below 700 m water depth, substrates are dominated by massive/blocky flows, pillow lavas, pillow and angular block talus, localized sheet flows, and minor granule-sand volcaniclastic detritus. The latter typically forms a substrate mode of 5–20%. Above 450 m, sand lapilli (that is in part winnowed and rippled), have a substrate mode of 50–100%, with minor components of massive flows, pillow lavas, and coarse talus. This difference in abundance of sand lapilli between 450 and 700 m is interpreted to record the transition between effusive and explosive (both phreatic and phreatomagmatic) eruptions. Between 600 and 700 m, a varied distribution of sand-lapilli abundance is interpreted as recording a mix of effusive and explosive eruptions, consistent with possible differences in the physical interaction of magma–water and known compositional magma heterogeneity.

This record has no associated files available for download.

More information

Published date: 30 June 2002
Keywords: Kermadec volcanoes, submarine volcanism, explosive volcanism, volcaniclastic depos

Identifiers

Local EPrints ID: 54948
URI: http://eprints.soton.ac.uk/id/eprint/54948
ISSN: 0025-3227
PURE UUID: 1fb0fbcb-315b-4b0c-b66c-c3d18e0dac29

Catalogue record

Date deposited: 23 Jul 2008
Last modified: 15 Mar 2024 10:51

Export record

Altmetrics

Contributors

Author: I.C. Wright
Author: P. Stoffers
Author: M. Hannington
Author: C.E.J. de Ronde
Author: P. Herzig
Author: I.E.M. Smith
Author: P.R.L. Browne

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×