scholarly journals Transition from arc to intraplate magmatism associated with backarc rifting: Evolution of the Sikhote Alin Volcanism

2000 ◽  
Vol 27 (11) ◽  
pp. 1587-1590 ◽  
Author(s):  
Yoshiyuki Tatsumi ◽  
Keiko Sato ◽  
Takashi Sano ◽  
Rieko Arai ◽  
Vladimir S. Prikhodko
Keyword(s):  
Sikhote Alin ◽  
Intraplate Magmatism ◽  
Backarc Rifting

The genus Pilophorus (Cladoniaceae) in Primorye Territory

2011 ◽  
Vol 45 ◽  
pp. 215-218
Author(s):  
I. F. Skirina ◽  
F. V. Skirin
Keyword(s):  
Additional Data ◽  
Lichen Species ◽  
Mountain Range ◽  
Sikhote Alin

The work contains new and additional data on distribution of two rare lichen species of the genus Pilophorus, P. cereolus and P. clavatus, in Primorye Territory (Sikhote-Alin mountain range).

scholarly journals 10. General Discussion

1960 ◽  
Vol 10 ◽  
pp. 677-679 ◽  
Keyword(s):  
Yield Curve ◽  
Fission Products ◽  
Heavy Elements ◽  
Sikhote Alin ◽  
Heavy Nuclei ◽  
Fission Yield ◽  
Element Abundances ◽  
The Earth ◽  
R Process ◽  
Nova Outburst

1. p. SELINOV: Anomalous abundances of Te and Xe isotopes in meteorites and in the Earth permit us to draw some conclusions concerning the age of uranium and the processes of nucleogenesis. According to the estimate by Hoyle the amount of 254Cf disintegrated during a super-nova outburst is of the order of io29 g or io~4 of the stellar mass. According to the fission-yield curve the isotopes of Te comprise about 1 % of the mass of fission products. The abundances of Te 128-131 are anomalously high, due to the fission of heavy nuclei. The element abundances do not permit us to draw any conclusions about the r-process. The isotopes of Te and Xe with even mass numbers give evidence in favour of the r-process (anomalously high abundances). But the amount of Te in meteorites and in Earth is about 1000 times less than it should be if formed during the outburst. The Sikhote- Alin meteorite shows the same anomaly. We may conclude that the heavy elements of the solar system have been formed not in a single super-nova outburst, but as a result of mixing from the totality of outbursts. According to Hoyle, this gives a definite estimate for the age of uranium.

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