Hertogen, J; Sachtleben, T; Schmincke, Hans-Ulrich; Jenner, G A (1985): Trace element geochemistry at DSDP Leg 82 Holes [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.805924, Supplement to: Hertogen, J et al. (1985): Trace element geochemistry and petrogenesis of basalts from Deep Sea Drilling Project Sites 556-559 and 561-564. In: Bougault, H; Cande, SC; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 82, 449-457, https://doi.org/10.2973/dsdp.proc.82.122.1985
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Forty-three samples from DSDP Holes 556-559 and 561-564 were analyzed for rare earth elements (REE), Sc, Cr, Co, Hf, Ta, and Th by instrumental neutron activation analysis.
The recovered basalts range from those depleted in light REE (LREE) to those enriched in LREE. The two types of basalts occur together in Holes 558 and 561. The depleted basalts have remarkably constant La/Yb, La/Sm, and La/Ti ratios and apparently derive from a large, homogeneous, mantle source underneath a segment (1200 km long) of the Mid-Atlantic Ridge. The almost twofold variation in the concentrations of incompatible trace elements in the depleted basalts is primarily due to different degrees of batch partial melting.
The variation of highly to moderately incompatible elements in the Leg 82 enriched basalts can be successfully explained in terms of source mixing between depleted mantle sources and alkaline or nephelinitic magmas similar to Azores Islands magmas. However, the correlation of LREE enrichment with distance from the Azores Triple Junction is tenuous at best, and the enriched alkaline component is probably not directly related to the Azores volcanism.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 37.500120 * Median Longitude: -36.533651 * South-bound Latitude: 33.141500 * West-bound Longitude: -43.767300 * North-bound Latitude: 38.939700 * East-bound Longitude: -32.559700
Date/Time Start: 1981-09-22T00:00:00 * Date/Time End: 1981-10-28T00:00:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
Download Data
Datasets listed in this publication series
- Hertogen, J; Sachtleben, T; Schmincke, H-U et al. (1985): (Table 2) Magnesium number and geochemistry at DSDP Hole 82-556. https://doi.org/10.1594/PANGAEA.805922
- Hertogen, J; Sachtleben, T; Schmincke, H-U et al. (2013): (Table 1) Trace element concentrations at DSDP Leg 82 Holes. https://doi.org/10.1594/PANGAEA.805918