Is Strontium-isotope stratigraphy a reliable tool for dating shallow-marine platform carbonates at the Barremian-Aptian transition? Review of western Tethyan case studies

被引：8

作者：

Frau, Camille ^{[1
]}

Masse, Jean-Pierre ^{[2
]}

Fenerci-Masse, Mukerrem ^{[2
]}

Tendil, Anthony J. -B. ^{[2
]}

Pictet, Antoine ^{[3
,4
]}

Lanteaume, Cyprien ^{[2
]}

机构：

[1] Groupement Interet Paleontol Sci & Exposit, 60 Bd Georges Richard, F-83000 Toulon, France

[2] Aix Marseille Univ, CNRS, IRD, CEREGE UM 34, 3 Pl Victor Hugo, F-13331 Marseille, France

[3] Univ Geneva, Dept Earth Sci, 13 Rue Maraichers, CH-1205 Geneva, Switzerland

[4] Musee Cantonal Geol, BFSH 2, CH-1015 Lausanne, Switzerland

来源：

CARNETS DE GEOLOGIE | 2018年 / 18卷 / 05期

关键词：

Strontium Isotope Stratigraphy; Cretaceous; Ammonites; Urgonian platform; Tethys; DESHAYESITES-DESHAYESI DORBIGNY; AMMONITE WORKING GROUP; PROVENCE SE FRANCE; LOOK-UP TABLE; COASTAL DEPOSITS; RUDIST BIVALVES; OAE; 1A; SR; AGE; BIOSTRATIGRAPHY;

D O I：

10.4267/2042/66931

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Strontium-isotope measurements on Lower Cretaceous marine rocks derive from belemnite material sampled in ammonite-constrained basinal successions. A group of values with a narrow range across the Barremian/Aptian boundary does not allow the separation of the uppermost Barremian (Martelites sarasini ammonite zone) from the lower Aptian pro parte (Deshayesites oglanlensis-D. forbesi ammonite zones). Growing numbers of studies applied Sr-Isotope Stratigraphy (SIS) on Barremian-Aptian shallow-marine sequences (Urgonian facies) in order to solve controversial results obtained by using different shallow-water biological time markers. Based on re-examination of case studies, we conclude that Sr-isotope values can neither be used to prove nor to disprove the location of the putative Barremian/Aptian boundary based on biostratigraphy. Pending more data available, SIS should be used with caution for dating ammonite-free carbonate sediments in the corresponding time interval.

引用

页码：139 / 154

页数：16

共 3 条

[1] Strontium and carbon-isotope chronostratigraphy of Barremian-Aptian shoal-water carbonates: Northern Tethyan platform drowning predates OAE 1a
Huck, S.
Heimhofer, U.
Rameil, N.
Bodin, S.
Immenhauser, A.
EARTH AND PLANETARY SCIENCE LETTERS, 2011, 304 (3-4) : 547 - 558
[2] Estimating the impact of early diagenesis on isotope records in shallow-marine carbonates: A case study from the Urgonian Platform in western Swiss Jura
Godet, Alexis
Durlet, Christophe
Spangenberg, Jorge E.
Follmi, Karl B.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, 2016, 454 : 125 - 138
[3] Comments on "Estimating the impact of early diagenesis on isotope records in shallow-marine carbonates: A case study from the Urgonian platform in western Swiss Jura" by A. GODET et al. [Palaeogeography Palaeoclimatology Palaeoecology 454 (2016) 125-138]
Granier, Bruno
Clavel, Bernard
Charollais, Jean
CARNETS DE GEOLOGIE, 2016, 16 (17): : 417 - 429

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