Highly siderophile element and Os isotope systematics of the Cenozoic volcanic rocks from the Eastern Pontides, NE Turkey: Constraints on the origin and evolution of subcontinental mantle-derived magmas

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F22%3A00000156" target="_blank" >RIV/00025798:_____/22:00000156 - isvavai.cz</a>

Alternative codes found

RIV/67985831:_____/22:00550787

Result on the web

<a href="https://www.sciencedirect.com/science/article/abs/pii/S0024493721006186?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0024493721006186?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.lithos.2021.106575" target="_blank" >10.1016/j.lithos.2021.106575</a>

Result language

angličtina

Original language name

Highly siderophile element and Os isotope systematics of the Cenozoic volcanic rocks from the Eastern Pontides, NE Turkey: Constraints on the origin and evolution of subcontinental mantle-derived magmas

Original language description

The Cenozoic subalkaline to alkaline volcanic rocks from the Eastern Pontides Orogenic Belt (EPOB) in NETurkey exhibit wide range of highly siderophile element (HSE) contents and Os isotope compositions that can berelated to their mantle sources and parental melt evolution. Although some Eocene rocks show signs of late-stagemodification, most of the studied volcanic rocks possess primary HSE and Os systematics. The Eocene volcanicrocks have largely variable PdN/IrN (~0.25–751), PdN/PtN (~0.25–87) and (187Os/188Os)i ratios (~0.113 to0.51). The Miocene volcanic rocks have high PdN/IrN (~2.6–441), low PdN/PtN (~0.11–1.7) and radiogenic(187Os/188Os)i ratios ranging from ~0.166 to 0.52 while the Mio-Pliocene volcanic rocks show high PdN/IrN of~7.2–29, low PdN/PtN (~1.2–2.7), and only mildly radiogenic (187Os/188Os)i values between ~0.132 and 0.177.Finally, the Quaternary volcanic rocks have low PdN/IrN (~2.3–3.6), PdN/PtN (~0.9–1.6) and radiogenic(187Os/188Os)i values ranging from ~0.133 to 0.194. Overall, the primitive mantle-normalized HSE patterns ofthe studied volcanic rocks are characterized by PPGE (Pt, Pd) and Re enrichment with respect to IPGE (Os, Ir,Ru). The variations in HSE and radiogenic Os isotope compositions of the relatively differentiated volcanic rocksindicate that crustal assimilation played active role in their parental melt evolution, especially in the Eocene andMiocene period. Besides, the obtained HSE data also suggest that the parental magmas of all the studied volcanicrocks were generated mainly in the S-saturated conditions. The temporal and spatial HSE and Os isotope variationsobserved in the studied Cenozoic volcanic rocks reflect the heterogeneity of the mantle source beneath theEPOB, which could be attributed to variations in response of different fluid/melt metasomatism of the underlyingSCLM.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10505 - Geology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

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

Name of the periodical

Lithos

ISSN

0024-4937

e-ISSN

—

Volume of the periodical

410-411

Issue of the periodical within the volume

February : 106575

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

19

Pages from-to

nestránkováno

UT code for WoS article

000762362700001

EID of the result in the Scopus database

2-s2.0-85121855708