Unknown
PANGAEA
In:
Supplement to: Nishimura, Akira; Mita, Naoki; Nohara, Masato (1992): Pelagic and hemipelagic sediments of the Izu-Bonin Region, Leg 126: geochemical and compositional features. In: Taylor, B; Fujioka, K; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 126, 487-503, https://doi.org/10.2973/odp.proc.sr.126.151.1992
Publication Date:
2024-01-09
Description:
Chemical analyses were performed on major, minor, and rare-earth elements of pelagic and hemipelagic sediments of the forearc, arc, and backarc sites of the Izu-Bonin Arc, Ocean Drilling Program Leg 126. Analyses of the hemipelagic and pelagic sediments of this area indicate that the chemical composition of this arc is highly affected by the chemical composition of rocks of this arc as a source of sediments. The Oligocene sediments, which are characterized by high MgO contents, reflect the chemical composition of the Paleogene volcanic rocks of the immature arc. Moreover, the late Miocene to Quaternary sediments with low MgO contents are attributed to the composition of the present arc. We also suggest that the sedimentation rates and topography of the sedimentary basin affect the MnO and SiO2 contents of pelagic and hemipelagic sediments.
Keywords:
126-787; 126-787B; 126-788; 126-788D; 126-790; 126-790A; 126-790B; 126-790C; 126-791; 126-791A; 126-791B; 126-792; 126-792A; 126-792B; 126-792E; 126-793; 126-793A; 126-793B; COMPCORE; Composite Core; DRILL; Drilling/drill rig; Joides Resolution; Leg126; North Pacific Ocean; Ocean Drilling Program; ODP; Philippine Sea
Type:
Dataset
Format:
application/zip, 4 datasets
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