Multiple melt source origin of the Line Islands (Pacific Ocean)

By: , and 



The Line Islands volcanic chain in the central Pacific Ocean exhibits many characteristics of a hotspot-generated seamount chain; however, the lack of a predictable age progression has stymied previous models for the origin of this feature. We combined plate-tectonic reconstructions with seamount age dates and available geochemistry to develop a new model that involves multiple melt regions and multiple melt delivery styles to explain the spatial and temporal history of the Line Islands system. Our model identifies a new melt source region (Larson melt region at ~17°S, ~125°W) that contributed to the formation of the Line Islands, as well as the Mid-Pacific Mountains and possibly the Pukapuka Ridge.

Publication type Article
Publication Subtype Journal Article
Title Multiple melt source origin of the Line Islands (Pacific Ocean)
Series title Geology
DOI 10.1130/G49306.1
Edition Online First
Year Published 2021
Language English
Publisher Geological Society of America
Contributing office(s) Pacific Coastal and Marine Science Center
Other Geospatial Line Islands
Google Analytic Metrics Metrics page
Additional publication details