Figure F254. Variation in incompatible trace element ratios Zr/Y and Ti/Zr vs. MgO wt% for Hole 1256D samples. A, B. = 309 dikes and 312 rocks only. C, D. = all Hole 1256D data. LP = lava pond, SF = basalt sheet flow, MF = basalt massive flow, BD = basaltic dike, G = gabbro, QOD = quartz-oxide diorite, TD = trondhjemite dike, GC = ghost core. N EPR = northern East Pacific Rise, 504B = Hole 504B near Costa Rica Rift. See “Geochemistry” in “Expedition 309” for the samples labeled 309 and “Geochemistry” in “Expedition 312” for Expedition 312 analyses. Northern EPR data from C.H. Langmuir (unpubl. data, www.petdb.org, 1999). Site 504 data from Autio et al. (1983), Natland et al. (1983), Emmermann (1985), and Tual et al. (1985).
Previous | Close | Next | Top of page