Annotated record of the detailed examination of Mn deposits from DEEPSONDE Expedition stations near the East Pacific Rise

• Main Author: Johnson, J R
• Format: Dataset
• Language: English
• Published: PANGAEA 1979
• Subjects: DEEPSONDE; Deposit type; DEPTH; sediment/rock; Description; DPSN02-D1; DPSN02-D3; DPSN02-D4; DPSN02-D5; Dredge; DRG; Elevation of event; Event label; Identification; Latitude of event; Longitude of event; Method/Device of event; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Pacific Ocean; Position; Quantity of deposit; Size; Substrate type; Thomas Washington; Visual description; Iceland
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.860447; https://doi.org/10.1594/PANGAEA.860447

Basalts from the base of a small seamount on ~1.5-m.y.-old crust west of the East Pacific Rise (EPR) at 9°N are intermediate in chemical and isotopic composition between light-rare-earth-element-depleted tholeiite (normal midocean ridge basalt (MORB)) and alkali basalt. Like oceanic alkali basalt, t...