Document Type
Article
Publication Date
2021
DOI
10.1029/2021GL093150
Publication Title
Geophysical Research Letters
Volume
48
Issue
15
Pages
e2021GL093150 (1-8)
Abstract
In the study of marine large igneous provinces, investigations often focus on the importance of mantle plumes in generating excess magmatism. Few studies, however, have addressed the role of plate boundary processes in promoting widespread and extensive mantle melting. This study investigates how spreading center geometry may have facilitated the emplacement of Shatsky Rise, an oceanic plateau in the western Pacific Ocean. The largest structure within Shatsky Rise, Tamu Massif, was created ∼140–150 Ma at the Pacific-Izanagi-Farallon (PIF) ridge-ridge-ridge triple junction. Moreover, the PIF triple junction was one of three triple junctions operating in close proximity at the time, as the nascent Pacific Plate (NPP) began to expand in size. This study suggests that the thermal conditions of the NPP, which likely resulted in a large area of thin lithosphere, could have significantly facilitated widespread mantle melting as well as the magmatic expression of any nearby mantle plume.
Rights
Copyright © 2021 American Geophysical Union.
"AGU allows authors to deposit their journal articles if the version is the final published citable version of record, the AGU copyright statement is clearly visible on the posting, and the posting is made 6 months after official publication by the AGU."
Original Publication Citation
Georgen, J. E., & Shotorban, A. K. (2021). Plate boundary and triple junction control of Shatsky Rise formation and implications for other ocean plateaus. Geophysical Research Letters, 48(15), 1-8, Article e2021GL093150. https://doi.org/10.1029/2021GL093150
Repository Citation
Georgen, Jennifer E. and Shotorban, Katrina, "Plate Boundary and Triple Junction Control of Shatsky Rise Formation and Implications for Other Ocean Plateaus" (2021). OES Faculty Publications. 421.
https://digitalcommons.odu.edu/oeas_fac_pubs/421