Abstract:
This dataset includes the whole-rock and mineral chemistry, Sr–Nd–Pb isotopic ratios, and petrography of basaltic, doleritic, and gabbroic xenoliths in a petit-spot volcano on the northwestern Pacific Plate. It provides geochemical and isotopic data that characterize the deeper lithologies of in situ old oceanic crust, offering insights into its formation at the fast-spreading Izanagi–Pacific Ridge (130–140 Ma) and subsequent evolution. This dataset is linked to Mikuni et al. (2025) Marine Geology.
How to cite this dataset:
Mikuni, K., Hirano, N., Machida, S., Akizawa, N., Yoneda, S., Tamura, A., Mizukami, T., Kato, Y., Morishita, T., 2025. Results of geochemical analysis and modeling of mafic xenoliths in a petit-spot volcano from KR04-08 cruise , Version 1.0. Interdisciplinary Earth Data Alliance (IEDA).
https://doi.org/10.60520/IEDA/113686. Accessed 2025-05-09.
Related
Publication(s):
Mikuni, K., Hirano, N., Machida, S., AKizawa, N., Yoneda, S., Tamura, A., Mizukami, T., Kato, Y. and Morishita, T. (2025) Intact Pacific oceanic crust captured as mafic xenoliths in a petit-spot volcano. Marine Geology, 107497.
User Contributed Keyword(s):
Petit-spot, oceanic crust, xenolith, granoblastic dike, Sr-Nd-Pb isotope