Carbon, oxygen, and strontium isotopic fingerprint in Neoproterozoic to early Cambrian limestones in an active margin setting: A record of local environment or global changes?

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F22%3A00551786" target="_blank" >RIV/67985831:_____/22:00551786 - isvavai.cz</a>

Alternative codes found

RIV/00025798:_____/22:00000016 RIV/00216208:11310/22:10456043

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0301926821004666?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0301926821004666?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.precamres.2021.106538" target="_blank" >10.1016/j.precamres.2021.106538</a>

Result language

angličtina

Original language name

Carbon, oxygen, and strontium isotopic fingerprint in Neoproterozoic to early Cambrian limestones in an active margin setting: A record of local environment or global changes?

Original language description

The Ediacaran to early Cambrian limestones preserved within the Blovice accretionary wedge, Bohemian Massif, are part of Ocean Plate Stratigraphy (OPS) and provide an intriguing example of how paleooceanographic and palaeoenvironmental conditions at active plate margins may be recorded by isotopic composition. Field relations, petrography and geochemical data elucidate the complex interplay of oceanic, diagenetic and volcanic processes. Rare calcite-dominated primary oolitic/pisolitic limestones were deposited on the slopes of seamount volcanoes in shallow-water lagoons and their formation was simultaneous with volcanic activity. In contrast, volumetrically more abundant re-deposited limestones occurring as layers within siliciclastic, graywackedominated successions consist of clastic fragments derived from previously formed carbonate ramps, which were disrupted during subduction and subsequently incorporated in deep-water turbidity currents. In both limestone types, the major/trace element as well as C, O and Sr isotope signatures are well preserved and provide a fingerprint of various limestone depositional conditions that can be directly linked with paleooceanic and paleogeographic interpretations. The observed spatial distribution of carbonate-bearing silicate rocks with elemental and isotopic compositions that differ from primary limestones suggest their common origin at active margins and indicate that some of these rocks have been formed by hydrothermal activity. Finally, we demonstrate that the carbonate member of OPS may provide important insights into the polarity and dynamics of subduction zones.

Czech name

—

Czech description

—

Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

—

OECD FORD branch

10505 - Geology

Project

<a href="/en/project/GA20-13644S" target="_blank" >GA20-13644S: Cherts and carbonates as geochemical proxies of paleoenvironmental conditions and Ocean Plate Stratigraphy</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Precambrian Research

ISSN

0301-9268

e-ISSN

1872-7433

Volume of the periodical

370

Issue of the periodical within the volume

March

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

19

Pages from-to

106538

UT code for WoS article

—

EID of the result in the Scopus database

2-s2.0-85122505587