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Cenozoic Volcanism of the Capel-Faust Basins, Northern Lord Howe Rise

Created 16/10/2025

Updated 16/10/2025

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A recent survey by Geoscience Australia acquired new exploration data and samples in the frontier offshore Lord Hose Rise (LHR) Capel-Faust region. This survey identified a number of volcanic features including cones, flows and sill-related features on the seafloor. Based on analysis of seismic data in the region (s302) and swath bathymetry, there are at least two distinct ages of volcanism exposed on the seafloor; Miocene-Pliocene (approximately 4-7 Ma) cones with a largely unmodified conical shape and Eocene-Oligocene volcanic features. The Eocene-Oligocene edifices can be seen on seismic profiles to extend from Palaeocene-Eocene and Eocene-Oligocene unconformities, in many cases overlying basement highs, through a blanket of marine ooze, to be exposed on the seafloor. Each cone is surrounded by a moat where the currents have eroded sediment. The Gifford Guyot (approximately 18 Ma), part of the Lord Howe Seamount chain was included in the survey area. Volcanic features are common on the seafloor of the Lord Howe Rise and in the neighbouring Tasman Basin, with two identified north-south seamount hotspot chains to the west of the Capel-Faust region that have been active from the Miocene to recent. The ZoNéCo 5 survey also identified a few small conical seamounts on the northern LHR, along a roughly north-northwest trend, dated as Early Miocene. The younger Capel-Faust seamounts are aligned with these and the age relationships suggest they could be part of a single seamount chain. The older Eocene-Oligocene cones do not show any preferred alignment within the survey area and are too old to be related to the current hotspot activity identified in the region. Presented to the Australian Earth Sciences Convention (AESC) 4 - 8th July 2010

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Field Value
Title Cenozoic Volcanism of the Capel-Faust Basins, Northern Lord Howe Rise
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/47a368a3-abb9-4b04-9a3b-089f05dc8b28
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 22/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
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  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Cenozoic Volcanism of the Capel-Faust Basins, Northern Lord Howe Rise". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/cenozoic-volcanism-of-the-capel-faust-basins-northern-lord-howe-rise