Cretaceous-Paleogene boundary Fish Clay at Hojerup (Stevns Klint, Denmark): trace metals in kerogen
Апстракт
Geochemical analyses of trace metals (Ir, Ni, Co, Cr, Zn, Au and Pb) and rare earth elements (La, Ce, Nd, Sm, Eu, Tb, Yb and Lu) in kerogen of the black marl at the Cretaceous-Paleogene boundary Fish Clay at Hojerup have been undertaken. Substantial proportions of the trace metals and rare earths were probably contained in terrestrial humic substances (the kerogen precursor) arriving at the marine sedimentary site. This is in accord with a previous hypothesis that kerogen is mainly derived from humic acids of an oxic soil in of the adjacent coastal areas of eastern Denmark. It is also suggested that humics were transported mainly through fluvial transport into the site of the deposition of the Fish Clay. The local weathering/leaching of the impact-ejecta fallout on the land surface or local terrestrial rocks by impact-induced? acid surface waters perhaps played an important role in providing trace metals and rare earths for these humic substances. Apparently, chondritic Ir, An, Ni, Co,... Cr and chondritic and non-chondritic Zn originated from the impact fallout; Pb and rare earth elements were most likely sourced by the rocks exposed in the coastal areas of eastern Denmark.
Кључне речи:
geochemistry / Cretaceous-Paleogene boundary / trace metals / rare earth elements / kerogenИзвор:
Bulletin de La Societe Geologique de France, 2007, 178, 5, 411-421
DOI: 10.2113/gssgfbull.178.5.411
ISSN: 0037-9409
WoS: 000250768100009
Scopus: 2-s2.0-35448934513
Колекције
Институција/група
VinčaTY - JOUR AU - Premović, Pavle I. AU - Todorović, Bratislav Ž. AU - Pavlović, Mirjana S. PY - 2007 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3232 AB - Geochemical analyses of trace metals (Ir, Ni, Co, Cr, Zn, Au and Pb) and rare earth elements (La, Ce, Nd, Sm, Eu, Tb, Yb and Lu) in kerogen of the black marl at the Cretaceous-Paleogene boundary Fish Clay at Hojerup have been undertaken. Substantial proportions of the trace metals and rare earths were probably contained in terrestrial humic substances (the kerogen precursor) arriving at the marine sedimentary site. This is in accord with a previous hypothesis that kerogen is mainly derived from humic acids of an oxic soil in of the adjacent coastal areas of eastern Denmark. It is also suggested that humics were transported mainly through fluvial transport into the site of the deposition of the Fish Clay. The local weathering/leaching of the impact-ejecta fallout on the land surface or local terrestrial rocks by impact-induced? acid surface waters perhaps played an important role in providing trace metals and rare earths for these humic substances. Apparently, chondritic Ir, An, Ni, Co, Cr and chondritic and non-chondritic Zn originated from the impact fallout; Pb and rare earth elements were most likely sourced by the rocks exposed in the coastal areas of eastern Denmark. T2 - Bulletin de La Societe Geologique de France T1 - Cretaceous-Paleogene boundary Fish Clay at Hojerup (Stevns Klint, Denmark): trace metals in kerogen VL - 178 IS - 5 SP - 411 EP - 421 DO - 10.2113/gssgfbull.178.5.411 ER -
@article{ author = "Premović, Pavle I. and Todorović, Bratislav Ž. and Pavlović, Mirjana S.", year = "2007", abstract = "Geochemical analyses of trace metals (Ir, Ni, Co, Cr, Zn, Au and Pb) and rare earth elements (La, Ce, Nd, Sm, Eu, Tb, Yb and Lu) in kerogen of the black marl at the Cretaceous-Paleogene boundary Fish Clay at Hojerup have been undertaken. Substantial proportions of the trace metals and rare earths were probably contained in terrestrial humic substances (the kerogen precursor) arriving at the marine sedimentary site. This is in accord with a previous hypothesis that kerogen is mainly derived from humic acids of an oxic soil in of the adjacent coastal areas of eastern Denmark. It is also suggested that humics were transported mainly through fluvial transport into the site of the deposition of the Fish Clay. The local weathering/leaching of the impact-ejecta fallout on the land surface or local terrestrial rocks by impact-induced? acid surface waters perhaps played an important role in providing trace metals and rare earths for these humic substances. Apparently, chondritic Ir, An, Ni, Co, Cr and chondritic and non-chondritic Zn originated from the impact fallout; Pb and rare earth elements were most likely sourced by the rocks exposed in the coastal areas of eastern Denmark.", journal = "Bulletin de La Societe Geologique de France", title = "Cretaceous-Paleogene boundary Fish Clay at Hojerup (Stevns Klint, Denmark): trace metals in kerogen", volume = "178", number = "5", pages = "411-421", doi = "10.2113/gssgfbull.178.5.411" }
Premović, P. I., Todorović, B. Ž.,& Pavlović, M. S.. (2007). Cretaceous-Paleogene boundary Fish Clay at Hojerup (Stevns Klint, Denmark): trace metals in kerogen. in Bulletin de La Societe Geologique de France, 178(5), 411-421. https://doi.org/10.2113/gssgfbull.178.5.411
Premović PI, Todorović BŽ, Pavlović MS. Cretaceous-Paleogene boundary Fish Clay at Hojerup (Stevns Klint, Denmark): trace metals in kerogen. in Bulletin de La Societe Geologique de France. 2007;178(5):411-421. doi:10.2113/gssgfbull.178.5.411 .
Premović, Pavle I., Todorović, Bratislav Ž., Pavlović, Mirjana S., "Cretaceous-Paleogene boundary Fish Clay at Hojerup (Stevns Klint, Denmark): trace metals in kerogen" in Bulletin de La Societe Geologique de France, 178, no. 5 (2007):411-421, https://doi.org/10.2113/gssgfbull.178.5.411 . .