Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Susumu Nohda"'
Autor:
Chen-Feng You, Yuko Uchio, Yukio Isozaki, M.M. Buslov, Bo Shian Wang, Shigenori Maruyama, Susumu Nohda
Publikováno v:
Journal of Asian Earth Sciences. 77:66-76
By examining Sr isotope stratigraphy of the Ediacaran paleo-atoll limestone in southern Siberia, we first demonstrated the surface seawater information from the lost Ediacaran (late Neoproterozoic) oceans. The Ediacaran Baratal limestone in the Gorny
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce23674881acadda0bdac392aa825137
http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100804392
http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100804392
Publikováno v:
GEOCHEMICAL JOURNAL. 45:169-174
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d41d320f6781bb481ff13f1daa4d4af2
https://doi.org/10.2343/geochemj.1.0106
https://doi.org/10.2343/geochemj.1.0106
Autor:
Susumu Nohda
Publikováno v:
Journal of Asian Earth Sciences. 34:599-609
Many studies have examined the Japan Sea basalts recovered during Ocean Drilling Program (ODP) Leg127/128. Of these, the 40Ar–39Ar dating undertaken is important in constraining the timing of the formation of the Japan Sea; however, the implication
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a901c5111480539eda76d45025b8c01
https://doi.org/10.1016/j.jseaes.2008.08.003
https://doi.org/10.1016/j.jseaes.2008.08.003
Publikováno v:
Journal of Asian Earth Sciences. 32:22-33
The secular change in 87Sr/86Sr ratio of the Paleozoic recorded the lowest value below 0.7070 in Late Middle Permian, i.e., the Permian minimum, suggesting that a major reform in oceanography occurred before the Paleozoic–Mesozoic transition. We ha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fca62bf4061811bfdebecbc1a8e5019e
https://doi.org/10.1016/j.jseaes.2007.10.007
https://doi.org/10.1016/j.jseaes.2007.10.007
Publikováno v:
Meteoritics & Planetary Science. 40:1059-1072
The timing and processes of alteration in the CV parent body are investigated by the analysis of Sr isotopes, major and trace elements, and petrographic type and distribution of the secondary minerals (nepheline and sodalite) in 22 chondrules from th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21f5ae30ecf84d40be3fc7bc179de581
https://doi.org/10.1111/j.1945-5100.2005.tb00173.x
https://doi.org/10.1111/j.1945-5100.2005.tb00173.x
Publikováno v:
Journal of Petrology. 46:505-522
We report Sr-, Nd- and Pb-isotopic compositions for the lavas of Mauritius, the second youngest volcanic island in the Reunion hotspot. The lavas of the Older Series (7·8–5·5 Ma) have identical isotopic compositions (87Sr/86Sr = 0·70411 to 0·70
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adf267e7baf752d78764ea37b40ca4c6
https://doi.org/10.1093/petrology/egh085
https://doi.org/10.1093/petrology/egh085
Publikováno v:
The Island Arc. 13:47-72
Recent geological investigations of the Isua Supracrustal Belt (3.8 Ga), southern West Greenland, have suggested that it is the oldest accretionary complex on earth, defined by an oceanic plate-type stratigraphy and a duplex structure. Plate history
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d25591476abd4fcb5d42fef88b50c903
https://doi.org/10.1111/j.1440-1738.2003.00416.x
https://doi.org/10.1111/j.1440-1738.2003.00416.x
Autor:
Susumu Nohda, Tomomi Kani
Publikováno v:
Journal of the Mass Spectrometry Society of Japan. 50:199-203
It has been established that a new filament loading scheme for lead isotopic analysis using thermal ionization mass spectrometry, so called “bead method,” which gives stable ion beam and high reproducibility. Two minor modifications to this schem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5795202972040b85e7f7623e5164d0a
https://doi.org/10.5702/massspec.50.199
https://doi.org/10.5702/massspec.50.199
Publikováno v:
Earth and Planetary Science Letters. 193:83-98
We present an extensive He, Ne and Ar isotope data set from the Reunion hotspot that demonstrates the presence of a homogeneous plume source that has unique isotopic characteristics. 3He/4He ratios of the two volcanoes on Reunion (Piton de la Fournai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa6181cd73c5b609e9f486b6a3773b9a
https://doi.org/10.1016/s0012-821x(01)00489-7
https://doi.org/10.1016/s0012-821x(01)00489-7
Autor:
Susumu Nohda
Publikováno v:
GEOCHEMICAL JOURNAL. 33:133-139
Samples for lead isotope measurements are generally loaded with silica-gel as the activator, and phosphoric acid. Then, the silica-gel, sample mixture is fused into glass on the filament by passing a high current for a short instant before mass-spect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2793b9ad7e5647f0936ab606813cbc8d
https://doi.org/10.2343/geochemj.33.133
https://doi.org/10.2343/geochemj.33.133