Identification of primary Ce-anomaly signatures in fossil biogenic apatite: Implication for the Cambrian oceanic anoxia and phosphogenesis

S. Morad; S. Felitsyn

doi:10.1016/S0037-0738(01)00093-8

Identification of primary Ce-anomaly signatures in fossil biogenic apatite: Implication for the Cambrian oceanic anoxia and phosphogenesis

S. Morad
, S. Felitsyn

Earth Science

Russian Academy of Sciences

Research output: Contribution to journal › Article › peer-review

127 Scopus citations

Abstract

Based on REE analyses of 105 world-wide distributed Cambrian fossil apatite samples and eight late Neoproterozoic phosphate concretions, a close relationship is established between the concentrations of MREE and Ce anomalies. Shale La/Sm_N ratios of 0.35 is suggested as a critical value for the discrimination of the natural Ce anomaly acquired during pre-burial/early diagenesis by biogenic apatite from an artificial Ce anomaly induced due to the calculation. Ce anomalies in apatites with flat REE distribution and La/Sm_N ratio >0.35 may be used as indicative of oceanic anoxia.

Original language	British English
Pages (from-to)	259-264
Number of pages	6
Journal	Sedimentary Geology
Volume	143
Issue number	3-4
DOIs	https://doi.org/10.1016/S0037-0738(01)00093-8
State	Published - 2001

Keywords

Apatite
Cambrian
Oceanic anoxia
Precambrian
REE

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10.1016/S0037-0738(01)00093-8

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@article{f167a6482fa745bc98b0ce34bf1046ba,

title = "Identification of primary Ce-anomaly signatures in fossil biogenic apatite: Implication for the Cambrian oceanic anoxia and phosphogenesis",

abstract = "Based on REE analyses of 105 world-wide distributed Cambrian fossil apatite samples and eight late Neoproterozoic phosphate concretions, a close relationship is established between the concentrations of MREE and Ce anomalies. Shale La/SmN ratios of 0.35 is suggested as a critical value for the discrimination of the natural Ce anomaly acquired during pre-burial/early diagenesis by biogenic apatite from an artificial Ce anomaly induced due to the calculation. Ce anomalies in apatites with flat REE distribution and La/SmN ratio >0.35 may be used as indicative of oceanic anoxia.",

keywords = "Apatite, Cambrian, Oceanic anoxia, Precambrian, REE",

author = "S. Morad and S. Felitsyn",

note = "Funding Information: We thank the following colleagues for providing us with material used in this study: J.S. Peel, L. Holmer, U. Sturesson, M. Moczydlowska, A. Gubanov (Uppsala University) and E. Zhegalo (Palaeontological Institute, Moscow). A. Koltsov and B. Belyatsky (Institute for Precabrian Geology \& Geochronology, St. Petersburg) kindly performed the analytical work. S. Felitsyn thanks the Swedish Royal Academy of Science (KVA) for providing him with a guest researcher grant.",

year = "2001",

doi = "10.1016/S0037-0738(01)00093-8",

language = "British English",

volume = "143",

pages = "259--264",

journal = "Sedimentary Geology",

issn = "0037-0738",

publisher = "Elsevier B.V.",

number = "3-4",

}

TY - JOUR

T1 - Identification of primary Ce-anomaly signatures in fossil biogenic apatite

T2 - Implication for the Cambrian oceanic anoxia and phosphogenesis

AU - Morad, S.

AU - Felitsyn, S.

N1 - Funding Information: We thank the following colleagues for providing us with material used in this study: J.S. Peel, L. Holmer, U. Sturesson, M. Moczydlowska, A. Gubanov (Uppsala University) and E. Zhegalo (Palaeontological Institute, Moscow). A. Koltsov and B. Belyatsky (Institute for Precabrian Geology & Geochronology, St. Petersburg) kindly performed the analytical work. S. Felitsyn thanks the Swedish Royal Academy of Science (KVA) for providing him with a guest researcher grant.

PY - 2001

Y1 - 2001

N2 - Based on REE analyses of 105 world-wide distributed Cambrian fossil apatite samples and eight late Neoproterozoic phosphate concretions, a close relationship is established between the concentrations of MREE and Ce anomalies. Shale La/SmN ratios of 0.35 is suggested as a critical value for the discrimination of the natural Ce anomaly acquired during pre-burial/early diagenesis by biogenic apatite from an artificial Ce anomaly induced due to the calculation. Ce anomalies in apatites with flat REE distribution and La/SmN ratio >0.35 may be used as indicative of oceanic anoxia.

AB - Based on REE analyses of 105 world-wide distributed Cambrian fossil apatite samples and eight late Neoproterozoic phosphate concretions, a close relationship is established between the concentrations of MREE and Ce anomalies. Shale La/SmN ratios of 0.35 is suggested as a critical value for the discrimination of the natural Ce anomaly acquired during pre-burial/early diagenesis by biogenic apatite from an artificial Ce anomaly induced due to the calculation. Ce anomalies in apatites with flat REE distribution and La/SmN ratio >0.35 may be used as indicative of oceanic anoxia.

KW - Apatite

KW - Cambrian

KW - Oceanic anoxia

KW - Precambrian

KW - REE

UR - https://www.scopus.com/pages/publications/0034785165

U2 - 10.1016/S0037-0738(01)00093-8

DO - 10.1016/S0037-0738(01)00093-8

M3 - Article

AN - SCOPUS:0034785165

SN - 0037-0738

VL - 143

SP - 259

EP - 264

JO - Sedimentary Geology

JF - Sedimentary Geology

IS - 3-4

ER -

Identification of primary Ce-anomaly signatures in fossil biogenic apatite: Implication for the Cambrian oceanic anoxia and phosphogenesis

Abstract

Keywords

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