Wakita Hiroshi Sano Yuji 0000-0002-3305-5644 Fujii Naoyuki Takeuchi Akira 1986 (Table 1) 3He/4He and 4He/20Ne ratios of pore gases in sediment at DSDP Sites 84-568 and 90-594 dataset https://doi.org/10.1594/PANGAEA.792927 Wakita Hiroshi Sano Yuji 0000-0002-3305-5644 Fujii Naoyuki Takeuchi Akira 1986 3He/4He ratios of pore gases in deep-sea sediments, Legs 89 and 90 book chapter 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 https://doi.org/10.2973/dsdp.proc.90.134.1986 1261-1263 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. -90.8 174.948 -45.5235 13.0722 42.074000000000005 -16.225649999999998 1982-02-08T00:00:00 1983-01-03T00:00:00 18.6 466.7 DSDP Deep Sea Drilling Project http://www.deepseadrilling.org/ Deep Sea Drilling Project DSDP 84-568_Site 13.0722 -90.8 North Pacific/SLOPE -2010.0 1982-02-08T00:00:00 Leg84 Leg84 1982-01-10T00:00:00 1982-01-10 1982-02-26T00:00:00 1982-02-26 Glomar Challenger https://www-odp.tamu.edu:443/glomar.html von Huene, Roland von Huene, Roland Aubouin, Jean Aubouin, Jean doi:10.2973/dsdp.proc.84.1985 Glomar Challenger https://www-odp.tamu.edu:443/glomar.html Composite Core COMPCORE 4.177 m 3.076 m 43 cores; 408 m cored; 9.7 m drilled; 75.4% recovery 90-594_Site -45.5235 174.948 South Pacific/CONT RISE -1204.0 1983-01-03T00:00:00 Leg90 Leg90 1982-12-02T00:00:00 1982-12-02 1983-01-08T00:00:00 1983-01-08 Glomar Challenger https://www-odp.tamu.edu:443/glomar.html von der Borch, Christopher C von der Borch, Christopher C Kennett, James P Kennett, James P doi:10.2973/dsdp.proc.90.1986 Glomar Challenger https://www-odp.tamu.edu:443/glomar.html Composite Core COMPCORE 11.875 m 4.964 m 81 cores; 780.4 m cored; 28.8 m drilled; 63.6% recovery 36 CC-BY-3.0 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/ Event label Event Event Sample, optional label/labor no Lab no Wakita Hiroshi Lab no DEPTH, sediment/rock Depth sed m depth http://purl.obolibrary.org/obo/PATO_0001595 sediment http://purl.obolibrary.org/obo/ENVO_00002007 rock Length L http://dbpedia.org/resource/Length mbsf Depth sed [m] Helium-3/Helium-4 ratio 3He/4He 10**-4 helium-3 3He helium-4 4He https://en.wikipedia.org/wiki/Isotopes_of_helium see reference(s) Wakita Hiroshi 3He/4He [10**-4] Helium-3/Helium-4 ratio, standard deviation 3He/4He std dev ± helium-3 3He helium-4 4He https://en.wikipedia.org/wiki/Isotopes_of_helium standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation see reference(s) Wakita Hiroshi 3He/4He std dev [±] Helium-4/Neon-20 4He/20Ne helium-4 4He https://en.wikipedia.org/wiki/Isotopes_of_helium neon-20 20Ne https://en.wikipedia.org/wiki/Isotopes_of_neon Mass spectrometry (MS) Chromatographs & spectrometers mass spectrometers http://vocab.nerc.ac.uk/collection/L05/current/LAB16/ Wakita Hiroshi 4He/20Ne supplement citable author33052 author33053 author43036 author43037 basis12 campaign206 campaign212 campaign3374950 campaign3374961 event2074540 event2074568 geocode1 geocode1599 geocode1600 geocode1601 geocode8128 inst41 license101 method10895 method174 method6943 param33741 param56290 param56303 param7359 pi33053 project4 ref37471 term1073131 term20696 term20727 term2299515 term37764 term38263 term41005 term41006 term41056 term41265 term43863 term68027