Authors / CoAuthors
Hill, P.J.
Abstract
The results of a gravity and magnetic survey of Niue Island, a raised atoll in the southwest Pacific Ocean, indicate that volcanic rocks underlie the coral limestone capping at a depth of 300-400 m below sea level. A roughly flat-topped, dome-shaped dense volcanic core, is present beneath the southwest of the island. The core has a lateral density contrast of 0.20 t/m3 and a reverse magnetisation of 3.0 A/m, and is believed to be of basaltic composition. An early-middle Miocene age is inferred for the volcanic pedestal. The asymmetric location of the core within the island is thought to be evidence for large-scale landslide activity, particularly on the west and south flanks of the seamount.
Product Type
document
eCat Id
81159
Contact for the resource
Custodian
Owner
Custodian
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
-
- GA PublicationJournal
- Australian and New Zealand Standard Research Classification (ANZSRC)
-
- Earth Sciences
-
- Published_External
Publication Date
1983-01-01T00:00:00
Creation Date
Security Constraints
Legal Constraints
Status
Purpose
Maintenance Information
unknown
Topic Category
geoscientificInformation
Series Information
BMR Journal of Australian Geology and Geophysics 8:4:323-328
Lineage
Unknown
Parent Information
Extents
[-28.2, -11.9, 177.45, 157.23]
Reference System
Spatial Resolution
Service Information
Associations
Source Information
Source data not available.