Index Catalog // ScholarsArchive@OSU

Start Over

Filtering by: Creator Duncan, Jennifer S. Has journal sim Geochemistry, Geophysics, Geosystems License All rights reserved

Basalts erupted along the Tongan fore arc during subduction initiation: Evidence from geochronology of dredged rocks from the Tonga fore arc and trench

Creator:

Meffre, Sebastian, Falloon, Trevor J., Crawford, Tony J., Hoernle, Kaj, Hauff, Folkmar, Duncan, Robert A., Bloomer, Sherman H., and Wright, Dawn J.

Abstract:

A wide variety of different rock types were dredged from the Tonga fore arc and trench between 8000 and 3000 m water depths by the 1996 Boomerang voyage. ⁴⁰Ar-³⁹Ar whole rock and U-Pb zircon dating suggest that these fore arc rocks were erupted episodically from the Cretaceous to the Pliocene...

Resource Type:

Article

Full Text:

, T. J. Crawford, K. Hoernle, F. Hauff, R. A. Duncan, S. H. Bloomer, and D. J. Wright (2012), Basalts
Temporal and crustal effects on differentiation of tholeiite to calcalkaline and ferro-trachytic suites, High Lava Plains, Oregon, USA

Creator:

Streck, Martin J. and Grunder, Anita L.

Abstract:

Strongly bimodal, basalt-rhyolite volcanism of the High Lava Plains Province of Oregon followed the Middle Miocene flood basalts of the Pacific Northwest and extends to recent time. During the 8 m.y. of volcanism recorded in the central High Lava Plains, in western Harney Basin, three distinct mafic magmatic trends originate...

Resource Type:

Article

Full Text:

—HIGH LAVA PLAINS, OREGON 10.1029/2012GC004237 4 of 23 T ab le 1 (S am p le ). C he m ic al D at