(Table 3) Isotope ratios of Sr, Nd and Ce and LREE concentrations in Pacific and Atlantic MORB samples from DSDP holes

• Main Authors: Makishima, Akio, Masuda, Akimasa
• Format: Dataset
• Language: English
• Published: PANGAEA 1994
• Subjects: 111-504B; 45-395; 54-420; 54-421; 54-429A; 73-519A; 73-522B; 82-562; 82-564; 92-597B; 92-597C; Calculated; Cerium; Cerium-138/Cerium-142; error; Cerium-138/Cerium-142 ratio; Comment; Deep Sea Drilling Project; DEPTH; sediment/rock; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Elevation of event; Event label; Glomar Challenger; Joides Resolution; Lanthanum; Latitude of event; Leg111; Leg45; Leg54; Leg73; Leg82; Leg92; Longitude of event; Mass spectrometer Finnigan MAT 261; Neodymium; Neodymium-143/Neodymium-144 ratio; North Atlantic/RIDGE; North Pacific/CONT RISE; North Pacific/SEDIMENT POND; North Pacific Ocean; Samarium; Sample code/label; South Atlantic/PLATEAU; South Atlantic/RIDGE; Pacific; Mid-Atlantic Ridge; North Atlantic
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.706047; https://doi.org/10.1594/PANGAEA.706047

Isotope ratios of Ce, Nd and Sr, and light rare-earth elements (La, Ce, Nd and Sm) concentrations were measured for sixteen N-type MORB samples from DSDP Sites 420, 421, 429, 597B and 597C (East Pacific Rise), 504B (Costa Rica Rift), and 395, 519A, 522B, 562 and 564 (Mid Atlantic Ridge). All the samples were confirmed as N-type MORB based on Nd and Sr isotope ratios, and LREE patterns. The Ce isotope ratios ranged from 0.0225616 (e-Ce = -1.6) to 0.0225633 (e-Ce = -1.0). Averages of e-Ce and e-Nd of N-type MORB were -1.4 and 9.5, respectively. The average of e-Ce is quite different from previous estimates. We propose that e-Ce = -1.4 should be used as the typical MORB Ce isotope ratio in future studies.