Age determination of the rhyolites of the Lord Howe Rise in the Southwest Pacific Ocean

• Main Authors: McDougall, Ian, van der Lingen, Gerrit J
• Format: Dataset
• Language: English
• Published: PANGAEA 1974
• Subjects: 21-207A; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg21; South Pacific/Tasman Sea/CONT RISE; Antarctic; Pacific; Antarc*
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.708429; https://doi.org/10.1594/PANGAEA.708429

Drilling at site 207 (DSDP Leg 21), located on the broad summit of the Lord Howe Rise, bottomed in rhyolitic rocks. Sanidine concentrates from four samples of the rhyolite were dated by the 40Ar/39Ar total fusion method and conventional K-Ar method, and yielded concordant ages of 93.7 +/- 1.1 my, eq...