PANGAEA_792927 (Table 1) 3He/4He and 4He/20Ne ratios of pore gases in sediment at DSDP Sites 84-568 and 90-594 Wakita, Hiroshi; Sano, Yuji; Fujii, Naoyuki; Takeuchi, Akira (Table 1) 3He/4He and 4He/20Ne ratios of pore gases in sediment at DSDP Sites 84-568 and 90-594 1986 PANGAEA Dataset Supplement to: Wakita, Hiroshi; Sano, Yuji; Fujii, Naoyuki; Takeuchi, Akira (1986): 3He/4He ratios of pore gases in deep-sea sediments, Legs 89 and 90. In: Kennett, JP; von der Borch, CC; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 90, 1261-1263, https://doi.org/10.2973/dsdp.proc.90.134.1986 https://doi.pangaea.de/10.1594/PANGAEA.792927 Investigator Hiroshi Wakita Earth Science Event label Sample, optional label/labor no DEPTH, sediment/rock Helium-3/Helium-4 ratio Helium-3/Helium-4 ratio, standard deviation Helium-4/Neon-20 geoscientificInformation 84-568_Site 90-594_Site Composite Core Leg84 Leg90 see reference(s) Mass spectrometry (MS) Glomar Challenger 1982-02-08 1983-01-03 Complete -45.5235 13.0722 -90.8 174.948 18.6 m (DEPTH, sediment/rock) 466.7 m (DEPTH, sediment/rock) DSDP Deep Sea Drilling Project unrestricted CC-BY-3.0: Creative Commons Attribution 3.0 Unported English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Studies on He isotope ratios of gas and rock samples in various parts of the world have shown a close relation between the 3He/4He ratio and geotectonic features of the sampling area. Emission of primordial He is commonly found in gases and fluid in Cenozoic volcanic areas (mid-ocean ridges, hot spots, and subduction zones), whereas that of radiogenic He is predominant in continental areas. Thus, the 3He/4He ratio is considered a useful tool for evaluating a variety of geotectonic environments. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.792927"!

http://www.deepseadrilling.org/ DSDP https://doi.org/10.2973/dsdp.proc.90.134.1986 3He/4He ratios of pore gases in deep-sea sediments, Legs 89 and 90 https://www-odp.tamu.edu:443/glomar.html Glomar Challenger DIF 9.4 2026-05-01