Across‐Arc Diversity in Rhyolites From an Intra‐oceanic Arc: Evidence From IODP Site U1437, Izu‐Bonin Rear Arc, and Surrounding Area

Felsic magmas from the Izu‐Bonin rear arc have compositions that resemble average continental crust in some respects. In order to understand their origin, we studied 1.1–4.4 Ma tephras in a rear‐arc drill core from International Ocean Discovery Program Expedition 350, Site U1437. They provide a well...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Geochemistry, geophysics, geosystems : G3 geophysics, geosystems : G3, 2020-02, Vol.21 (2), p.n/a, Article 2019
Hauptverfasser:	Heywood, Luan J., DeBari, Susan M., Gill, James B., Straub, Susanne M., Schindlbeck‐Belo, Julie C., Escobar‐Burciaga, Ricardo D., Woodhead, Jon
Format:	Artikel
Sprache:	eng
Schlagworte:	arc crust arc magmatism Basalt closed‐system fractional crystallization Continental crust Crystallization Drills Earth Eocene Evolution Expeditions Geochemistry Geochemistry & Geophysics Geological processes intra‐oceanic arc Isotopes Izu‐Bonin Arc Magma Melting Oceanic crust Oligocene Open systems Physical Sciences Rare earth elements Ratios Rhyolites Rifting Science & Technology Seamount chains Seamounts Subduction Subduction zones Tephra Trace elements Volcanic rocks Volcanoes
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	Felsic magmas from the Izu‐Bonin rear arc have compositions that resemble average continental crust in some respects. In order to understand their origin, we studied 1.1–4.4 Ma tephras in a rear‐arc drill core from International Ocean Discovery Program Expedition 350, Site U1437. They provide a well‐dated record of changing magmatic compositions during the early stages of the most recent episode of Izu‐Bonin arc rifting. Based on our comprehensive recontextualization of published analyses of
ISSN:	1525-2027 1525-2027
DOI:	10.1029/2019GC008353