DOI: 10.1007/s00531-014-1078-6
Scopus记录号: 2-s2.0-84957945056
论文题名: The age of Earth’s largest volcano: Tamu Massif on Shatsky Rise (northwest Pacific Ocean)
作者: Geldmacher J. ; van den Bogaard P. ; Heydolph K. ; Hoernle K.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2014
卷: 103, 期: 8 起始页码: 2351
结束页码: 2357
语种: 英语
英文关键词: Expedition 324
; IODP
; Oceanic plateau
; Shatsky Rise
; Tamu Massif
Scopus关键词: age determination
; argon-argon dating
; geochronology
; lava
; mantle plume
; Ocean Drilling Program
; submarine volcano
; volcanism
; Pacific Ocean
; Pacific Ocean (Northwest)
; Shatsky Rise
; Tamu
英文摘要: This study presents laser step-heating 40Ar/39Ar age determinations of basaltic lava samples from Tamu Massif, the oldest and largest edifice of the submarine Shatsky Rise in the northwest Pacific and Earth’s proposed largest volcano. The rocks were recovered during Integrated Ocean Drilling Program Expedition 324, which cored 160 m into the igneous basement near the summit of Tamu Massif. The analyzed lavas cover all three major stratigraphic groups penetrated at this site and confirm a Late Jurassic/Early Cretaceous age for the onset of Shatsky Rise volcanism. Lavas analyzed from the lower and middle section of the hole yield plateau ages between 144.4 ± 1.0 and 143.1 ± 3.3 Ma with overlapping analytical errors (2σ), whereas a sample from the uppermost lava group produced a significantly younger age of 133.9 ± 2.3 Ma suggesting a late or rejuvenated phase of volcanism. The new geochronological data infer minimum (average) melt production rates of 0.63–0.84 km3/a over a time interval of 3–4 million years consistent with the presence of a mantle plume. © 2014, Springer-Verlag Berlin Heidelberg. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84957945056&doi=10.1007%2fs00531-014-1078-6&partnerID=40&md5=18221836ac2078810a6230ade8efe232
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70322
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
There are no files associated with this item.
作者单位: GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstr.1-3, Kiel, Germany
Recommended Citation:
Geldmacher J.,van den Bogaard P.,Heydolph K.,et al. The age of Earth’s largest volcano: Tamu Massif on Shatsky Rise (northwest Pacific Ocean)[J]. International Journal of Earth Sciences,2014-01-01,103(8)