(Table DR1) Trace element contents in basalts from ODP Hole 33-317A ...

• Main Authors: Ingle, Stephanie, Mahoney, John J, Sato, Hiroshi, Coffin, Millard F, Kimura, Jun-Ichi, Hirano, Naoto, Nakanishi, Masao
• Format: Dataset
• Language: English
• Published: PANGAEA 2007
• Subjects: Sample code/label; Rubidium; Strontium; Yttrium; Zirconium; Niobium; Caesium; Barium; Lanthanum; Cerium; Praseodymium; Neodymium; Samarium; Europium; Gadolinium; Terbium; Dysprosium; Holmium; Erbium; Thulium; Ytterbium; Lutetium; Hafnium; Thorium; Uranium; Drilling/drill rig; DSDP/ODP/IODP sample designation; Thermal-ionization multicollector mass spectrometer VG Sector; Leg33; Glomar Challenger; Deep Sea Drilling Project DSDP; Danger Islands; Pacific; Plateau Central
• Online Access: https://dx.doi.org/10.1594/pangaea.721831; https://doi.pangaea.de/10.1594/PANGAEA.721831

Numerous large igneous provinces formed in the Pacific Ocean during Early Cretaceous time, but their origins and relations are poorly understood. We present new geochronological and geochemical data on rocks from the Manihiki Plateau and compare these results to those for other Cretaceous Pacific plateaus. A dredged Manihiki basalt gives an 40Ar-39Ar age of 117.9+/-3.5 Ma (2 sigma), essentially contemporaneous with the Ontong Java Plateau ~2500 km to the west, and the possibly related Hikurangi Plateau ~3000 km to the south. Drilled Manihiki lavas are tholeiitic with incompatible trace element abundances similar to those of Ontong Java basalts. These lavas may result from high degrees of partial melting during the main eruptive phase of plateau formation. There are two categories of dredged lavas from the Danger Islands Troughs, which bisect the plateau. The first is alkalic lavas having strong enrichments in light rare earth and large-ion lithophile elements; these lavas may represent late-stage activity, ... : Supplement to: Ingle, Stephanie; Mahoney, John J; Sato, Hiroshi; Coffin, Millard F; Kimura, Jun-Ichi; Hirano, Naoto; Nakanishi, Masao (2007): Depleted mantle wedge and sediment fingerprint in unusual basalts from the Manihiki Plateau, central Pacific Ocean. Geology 2007 35(7), 35(7), 595-598 ...