Exploring the Indo-Mediterranean connection during the Miocene: Insights from the foraminiferal 143Nd/144Nd isotopic data from the Iranian corridor
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F25%3A00639065" target="_blank" >RIV/67985831:_____/25:00639065 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/25:10508594
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0921818125003674?dgcid=coauthor" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0921818125003674?dgcid=coauthor</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.gloplacha.2025.105058" target="_blank" >10.1016/j.gloplacha.2025.105058</a>
Alternative languages
Result language
angličtina
Original language name
Exploring the Indo-Mediterranean connection during the Miocene: Insights from the foraminiferal 143Nd/144Nd isotopic data from the Iranian corridor
Original language description
The Miocene represents a critical period in the paleogeographic evolution of Eurasia, particularly in the Mediterranean region. Of special interest is the Middle Miocene, during which the closure of the enigmatic Indo-Mediterranean Gateway, which terminated water exchange between the Mediterranean and the Indian Ocean, remains incompletely understood. In this study, we present a unique geochemical dataset combining foraminiferal elemental ratios (Mg/Ca, Sr/Ca, Fe/Ca, Li/Ca) with Sr-Nd isotopic systematics from two Langhian-aged successions in Lorestan, Iran: Tang-e Shabikhun and Haft Cheshmeh. While the data reveal a notable presence of non‑carbonate material within foraminiferal tests, likely introduced through benthic fluxes, elevated Mg/Ca ratios may also reflect unusual paleoenvironmental conditions, potentially linked to warm, hypersaline settings prevailing during the Miocene Climatic Optimum. The analysed εNd values are relatively radiogenic and overlap with those reported from the Eastern Mediterranean, suggesting a palaeoceanographic connection between the two regions during the Langhian. In contrast, the detected Iranian εNd signatures differ markedly from those of the Indian Ocean and the Paratethys, indicating the absence of significant water mass exchange with these marine domains during this interval. These findings support the interpretation that, during the Langhian, the studied area formed part of a rather semi-enclosed marine basin characterized by low oxic, restricted conditions and sustained hydrographic connectivity with the Eastern Mediterranean.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10502 - Oceanography
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Global and Planetary Change
ISSN
0921-8181
e-ISSN
1872-6364
Volume of the periodical
255
Issue of the periodical within the volume
December
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
12
Pages from-to
105058
UT code for WoS article
001577942300001
EID of the result in the Scopus database
2-s2.0-105015994718