Zobrazeno 1 - 10
of 18
pro vyhledávání: '"P. I. Premovic"'
Publikováno v:
Journal of the Serbian Chemical Society, Vol 73, Iss 4, Pp 453-461 (2008)
Geochemical analyses of Zn, Pb and rare earth elements (La, Ce, Nd, Sm, Eu, Tb, Yb and Lu) in the kerogen of the black marl at the Cretaceous – Paleogene boundary Fish Clay at Højerup were performed. Substantial proportions of the Zn, Pb and rare
Externí odkaz:
https://doaj.org/article/7bea72855e6046b9abac6e341b4cb271
Autor:
PAVLE I. PREMOVIC, MILENA M. KRSMANOVIC, BRATISLAV Z. TODOROVIC, MIRJANA S. PAVLOVIC, NIKOLA D. NIKOLIC, DRAGAN M. DJORDJEVIC
Publikováno v:
Journal of the Serbian Chemical Society, Vol 71, Iss 7, Pp 793-806 (2006)
Geochemical analyses of trace metals (Ir, Ni and Zn) in the kerogen of the black marl of the Cretaceous-Tertiary boundary succession (Fish Clay) at Stevns Klint (Hjerup Church) were undertaken. The data for this kerogen were in accordance with a prev
Externí odkaz:
https://doaj.org/article/d0b32d3e42084e25b19a4c0acd6b6665
Autor:
PAVLE I. PREMOVIC, BRATISLAV Z. TODOROVIC, NIKOLA D. NIKOLIC, MIRJANA S. PAVLOVI, DRAGAN M. DJORDJEVIC, DEJAN T. DULANOVIC
Publikováno v:
Journal of the Serbian Chemical Society, Vol 71, Iss 6, Pp 639-659 (2006)
The Cretaceus-Tertiary (KT) boundary at Stevns Klint (the Højerup succession), Fiskeler, consists of a thin red clay layer overlain by a thick one of black marl. These two layers are made up mainly from cheto-smectite and biogenic calcite. The black
Externí odkaz:
https://doaj.org/article/b6fa5c138bc54e2eb7e0721ab11fac67
Autor:
PAVLE I. PREMOVIC
Publikováno v:
Journal of the Serbian Chemical Society, Vol 71, Iss 2, Pp 143-147 (2006)
Recent geophysical and geochemical data and theoretical modeling indicate high levels of atmospheric O2 (up to 35%) during the Carboniferous-Permian. I suggest that this O2 pulse had a substantial impact on global accumulations of petroleum source ro
Externí odkaz:
https://doaj.org/article/447f086307e047af90ec814e674b1a0d
Autor:
PAVLE I. PREMOVIC
Publikováno v:
Journal of the Serbian Chemical Society, Vol 69, Iss 7, Pp 555-561 (2004)
The lateral distribution of predominantly terrestrial kerogen or humics enriched with copper(II) porphyrins (Cu-P) across the Danish marine basin implies that the alleged Cretaceous-Tertiary (KT) boundary deposits in western Denmark (at the Nye Kløv
Externí odkaz:
https://doaj.org/article/92ae64ea66d64e6b8e6a7a64641b2697
Publikováno v:
Journal of the Serbian Chemical Society, Vol 69, Iss 3, Pp 205-223 (2004)
The Cretaceous-Tertiary (KT) boundary transition at the Blake Nose Plateau recovered by ODP Leg 171B (site 1049, hole A, core 17X, section 2) contains an ejecta bed (thickness ca. 17 cm) marking a late Cretaceous asteroid impact. The nature and geoch
Externí odkaz:
https://doaj.org/article/ff736938c8f8487c8beaf5b2ba5a7691
Autor:
PAVLE I. PREMOVIC
Publikováno v:
Journal of the Serbian Chemical Society, Vol 68, Iss 2, Pp 97-107 (2003)
Earths atmosphere is composed primarily of N2 and O2. The origin of free O2 in the early Earths atmosphere is still subject of considerable debate.1 Theoretical models suggest that the initial form of free O2 in the atmosphere has been oceanic H2O. R
Externí odkaz:
https://doaj.org/article/34344934d6cd4cbd9216777461828de4
Autor:
SALVADOR LOMONACO, LILIANA LOPEZ, DRAGAN M. DJORDJEVIC, RUZICA S. NIKOLIC, MIRJANA S. PAVLOVIC, BRATISLAV Z. TODOROVIC, NIKOLA D. NIKOLIC, PAVLE I. PREMOVIC
Publikováno v:
Journal of the Serbian Chemical Society, Vol 66, Iss 10, Pp 647-670 (2001)
Trace metals in the four discrete layers of the Cretaceous-Tertiary boundary (Fiskeler) at Stevns Klint (Denmark) are relatively well studied, yet much remains to be learned about them. Therefore, an integrated study of the trace (meteoritic Ir, part
Externí odkaz:
https://doaj.org/article/a95b835716ed45baaafd441425c48dbf
Autor:
OLIVERA M. NESKOVIC, MIOMIR V. VELJKOVIC, MIRJANA S. PAVLOVIC, SALVADOR LOMANOCO, LILIANA LOPEZ, IVANA R. TONSA, DRAGAN M. DJORDJEVIC, PAVLE I. PREMOVIC
Publikováno v:
Journal of the Serbian Chemical Society, Vol 65, Iss 8, Pp 561-569 (2000)
High resolution mass spectrometry indicates that the isotopic abundance of 50vanadium (V) of the Late Cretaceous La Luna petroleum asphaltenes and related source kerogen of marine origin (both highly enriched with V >> 2000 ppm) is higher by about 3,
Externí odkaz:
https://doaj.org/article/1e6ab70fa22f4cd2b37c52a17643404c
Publikováno v:
Journal of the Serbian Chemical Society, Vol 65, Iss 4, Pp 229-244 (2000)
Kerogen occurrences in stromatolitic cherts from the Middle Precambrian Gunflint Formation and related rocks have been investigated by the use of elemental analysis, Fourier transform infrared and electron spin reconance spectroscopies. Particular at
Externí odkaz:
https://doaj.org/article/f1f6d4d881da4dbd9be290f8168bfcb4