Three‐Dimensional Seismic Imaging of Ancient Submarine Lava Flows: An Example From the Southern Australian Margin

Submarine lava flows are the most common surficial igneous rock on the Earth. However, they are inherently more difficult to study than their subaerial counterparts due to their inaccessibility. In this study, we use newly acquired 3‐D (three‐dimensional) seismic reflection data to document the dist...

Full description

Saved in:
Bibliographic Details
Published in:Geochemistry, geophysics, geosystems : G3 geophysics, geosystems : G3, 2017-11, Vol.18 (11), p.3840-3853
Main Authors: Reynolds, P., Holford, S., Schofield, N., Ross, A.
Format: Article
Language:English
Subjects:
Citations: Items that this one cites
Items that cite this one
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Submarine lava flows are the most common surficial igneous rock on the Earth. However, they are inherently more difficult to study than their subaerial counterparts due to their inaccessibility. In this study, we use newly acquired 3‐D (three‐dimensional) seismic reflection data to document the distribution and morphology of 26 ancient, buried lava flows within the middle Eocene‐aged Bight Basin Igneous Complex, offshore southern Australia. Many of these lava flows are associated with volcanoes that vary from 60 to 625 m in height and 0.3 to 10 km in diameter. Well data and seismic‐stratigraphic relationships suggest that the lava flows and volcanoes were emplaced offshore in water depths of
ISSN:1525-2027
1525-2027
DOI:10.1002/2017GC007178