Heterogeneous mush-dominated plumbing system and mantle sources of alkaline lamprophyres in Tuoyun Basin, SW Central Asian Orogenic Belt
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F41601670%3A_____%2F23%3AN0000005" target="_blank" >RIV/41601670:_____/23:N0000005 - isvavai.cz</a>
Alternative codes found
RIV/00216305:26110/24:PU155168 RIV/67985831:_____/24:00578535
Result on the web
<a href="https://doi.org/10.1130/B36951.1" target="_blank" >https://doi.org/10.1130/B36951.1</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1130/B36951.1" target="_blank" >10.1130/B36951.1</a>
Alternative languages
Result language
angličtina
Original language name
Heterogeneous mush-dominated plumbing system and mantle sources of alkaline lamprophyres in Tuoyun Basin, SW Central Asian Orogenic Belt
Original language description
Lamprophyres are spatially and temporally widespread in continental belts, but their magmatic differentiation process and melting dynamic mechanisms remain subjects of debate. In this study, we report mineral chemistry, bulk-rock compositions, and Sr-Nd-O isotopes of the alkaline lamprophyres (including monchiquite and camptonite) from the Tuoyun Basin of the southwestern Central Asian Orogenic Belt. Based on the P-T estimates, transcrustal magmatic reservoirs from the lower crust to upper crust are revealed for monchiquite and camptonite. These magmatic reservoirs were potentially connected, and the magmatic recharge and mixing processes that occurred were recorded by zoned clinopyroxene and amphibole. The diverse crystal populations are suggested to have originated from multiple batches of magmas, which were then involved in forming the subsequent magmas. The Sr-Nd isotopic compositions are relatively depleted, with (87Sr/86Sr)i = 0.70390– 0.70452 and εNd(t) = 5.46–6.49 for the monchiquite, while the values for camptonite are 0.70391–0.70463 and 4.71–5.02. Moreover, the olivine in situ O isotopes in the monchiquite show δ18OV-SMOW values of 4.81‰– 5.40‰, which are comparable to those of the mantle peridotite. Compared with the experimental melts, a hybridized mantle source of hydrous peridotite + silica-depleted pyroxenite is proposed, and partial melting of this component was induced by the upwelling asthenosphere. Ultimately, our study highlights the critical role of the magmatic plumbing system and hydrous mantle source in the formation of Tuoyun lamprophyres.
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
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OECD FORD branch
10505 - Geology
Result continuities
Project
<a href="/en/project/GX19-29124X" target="_blank" >GX19-29124X: EVOLUTION AND POST-EMPLACEMENT HISTORY OF CARBONATITES: IMPLICATIONS FOR THE MOBILITY AND CONCENTRATION OF CRITICAL METALS</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Geological Society of America
ISSN
0016-7606
e-ISSN
1943-2674
Volume of the periodical
136
Issue of the periodical within the volume
September 8, 2023
Country of publishing house
US - UNITED STATES
Number of pages
19
Pages from-to
1827-1845
UT code for WoS article
001235332700002
EID of the result in the Scopus database
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