Nickel isotopic variation in black shales from Bohemia, China, Canada, and Finland: a reconnaissance study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F19%3A00000034" target="_blank" >RIV/00025798:_____/19:00000034 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60460709:41330/19:77091

Výsledek na webu

<a href="https://doi.org/10.1007/s00126-018-0839-8" target="_blank" >https://doi.org/10.1007/s00126-018-0839-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00126-018-0839-8" target="_blank" >10.1007/s00126-018-0839-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Nickel isotopic variation in black shales from Bohemia, China, Canada, and Finland: a reconnaissance study

Popis výsledku v původním jazyce

We present delta60Ni values for black shales, determined by double-spike MC-ICP-MS. The samples comprise Paleoproterozoic Talvivaara Ni–Zn–Co–Cu black shales from Finland, Neoproterozoic black shales from the Teplá Barrandian Unit, Czech Republic, Early Cambrian Ni–Mo-rich black shales from the Yangtze Craton, and Devonian Ni–Zn–PGE black shales from Yukon, Canada. In addition, the sample set includes a black smoker sample from the Logatchev hydrothermal field, Mid-Atlantic Ridge. The delta60Ni values vary from -0.84±0.09 to +0.62±0.04per mille (SD) with a median of -0.10per mille (n = 28). Ni isotopic compositions were predominantly lighter than those of abiotic terrestrial and extraterrestrial samples (0.15per mille and 0.27per mille), mantle (0.23per mille, Gall et al. 2017), present-day seawater (1.44per mille, Cameron and Vance 2014), dissolved Ni from riverine input (0.84per mille, Cameron and Vance 2014), ferromanganese crusts (0.9–2.5per mille, Gall et al. 2013), Devonian/Mississippian organic-rich marine sediments, lower Jurassic organic-rich marine sediments (0.2–2.5per mille, average 0.92per mille, n = 18, Porter et al. 2014), and euxinic sediments of the Black Sea (0.14–0.51per mille, Vance et al. 2016). However, the range of delta60Ni values in our black shale samples was close to that of the weathering products of mafic/ultramafic rocks (ore and soil samples) ranging from -0.60 to +0.30per mille (Ratié et al. 2015; Spivak-Birndorf et al. 2018), Ni sulfide ores hosted by Archean komatiites from Australia and Canada (-0.10 to -1.03per mille, average -0.70per mille, n = 8, Gueguen et al. 2013) and Archean Ni-rich magmatic sulfides from Zimbabwe (-0.28 to -0.47per mille, n = 6, Hoffman et al. 2014). Based on our observations and considering the extremely low contribution of direct biological uptake of Ni, and a dominant Ni residence in early Fe/Ni sulfides we suggest, that our mostly light Ni isotopic compositions in metal-rich black shales result from sulfidization of organic matter and Ni removal into sulfides.

Název v anglickém jazyce

Nickel isotopic variation in black shales from Bohemia, China, Canada, and Finland: a reconnaissance study

Popis výsledku anglicky

We present delta60Ni values for black shales, determined by double-spike MC-ICP-MS. The samples comprise Paleoproterozoic Talvivaara Ni–Zn–Co–Cu black shales from Finland, Neoproterozoic black shales from the Teplá Barrandian Unit, Czech Republic, Early Cambrian Ni–Mo-rich black shales from the Yangtze Craton, and Devonian Ni–Zn–PGE black shales from Yukon, Canada. In addition, the sample set includes a black smoker sample from the Logatchev hydrothermal field, Mid-Atlantic Ridge. The delta60Ni values vary from -0.84±0.09 to +0.62±0.04per mille (SD) with a median of -0.10per mille (n = 28). Ni isotopic compositions were predominantly lighter than those of abiotic terrestrial and extraterrestrial samples (0.15per mille and 0.27per mille), mantle (0.23per mille, Gall et al. 2017), present-day seawater (1.44per mille, Cameron and Vance 2014), dissolved Ni from riverine input (0.84per mille, Cameron and Vance 2014), ferromanganese crusts (0.9–2.5per mille, Gall et al. 2013), Devonian/Mississippian organic-rich marine sediments, lower Jurassic organic-rich marine sediments (0.2–2.5per mille, average 0.92per mille, n = 18, Porter et al. 2014), and euxinic sediments of the Black Sea (0.14–0.51per mille, Vance et al. 2016). However, the range of delta60Ni values in our black shale samples was close to that of the weathering products of mafic/ultramafic rocks (ore and soil samples) ranging from -0.60 to +0.30per mille (Ratié et al. 2015; Spivak-Birndorf et al. 2018), Ni sulfide ores hosted by Archean komatiites from Australia and Canada (-0.10 to -1.03per mille, average -0.70per mille, n = 8, Gueguen et al. 2013) and Archean Ni-rich magmatic sulfides from Zimbabwe (-0.28 to -0.47per mille, n = 6, Hoffman et al. 2014). Based on our observations and considering the extremely low contribution of direct biological uptake of Ni, and a dominant Ni residence in early Fe/Ni sulfides we suggest, that our mostly light Ni isotopic compositions in metal-rich black shales result from sulfidization of organic matter and Ni removal into sulfides.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

<a href="/cs/project/GA17-15700S" target="_blank" >GA17-15700S: Formace černých břidlic jako geochemický indikátor paleoenvironmentálních změn a tektonických podmínek podél aktivních kontinentálních okrajů</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Mineralium Deposita

ISSN

0026-4598

e-ISSN

—

Svazek periodika

54

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

24

Strana od-do

719-742

Kód UT WoS článku

000467483400007

EID výsledku v databázi Scopus

2-s2.0-85053663985