Minerals, Free Full-Text
Por um escritor misterioso
Last updated 15 março 2025

The Tuwu-Yandong porphyry Cu belt is located on the southern margin of the Dananhu island arc in eastern Tianshan, constituting the largest Cu metallogenic belt in Northwest China. Two episodes (~334 Ma and ~317 Ma) of porphyry Cu-Mo mineralization in the belt have been recognized, associated with Early and Late Carboniferous felsic intrusions, respectively. The Carboniferous intrusions, therefore, provide a unique opportunity to investigate tectono-magmatic-metallogenic evolution of the belt. New LA–ICP–MS zircon U–Pb dating indicates that the mineralization-related and post-mineralization intrusions (granodiorite porphyry, gabbro, and granite porphyry) were formed at 321.8 ± 3.1 Ma, 313.5 ± 1.2 Ma, and 309.8 ± 2.5 Ma, respectively. The zircon trace element shows that the granodiorite porphyry (Ce4+/Ce3+ ratios, avg. 129, median = 112, n = 15) was likely derived from a more oxidized (and hydrous) magma source than that of the gabbro (Ce4+/Ce3+ ratios, avg. 74, median = 40, n = 15) and granite porphyry (Ce4+/Ce3+ ratios, avg. 100, median = 91, n = 15), being favorable for porphyry copper mineralization. The granodiorite porphyry shows an adakitic affinity (e.g., high Sr/Y ratios and low Y contents) and has high εNd(t) (6.4–6.7), εHf(t) (11.4–14.3), and Mg# values (47.4–58.1) and low (87Sr/86Sr)i (0.703804–0.703953), suggesting that the melt was derived from partial melting of a subducted oceanic slab followed by mantle peridotite interaction. The gabbro exhibits higher Al2O3 (16.5–17.4 wt.%), Cr (107–172 ppm), and Ni (37–77 ppm) contents and εNd(t) (6.6–7.2), εHf(t) (11.6–15.9), and Mg # (53.3–59.9) values, while it has lower (87Sr/86Sr)i values (0.703681–0.703882) than the granodiorite porphyry, indicating a depleted mantle source. The granite porphyry exhibits an affinity with non-fractionated I-type granites and possesses higher SiO2 (71.1–72.0 wt.%) contents, lower but positive εNd(t) (4.8–5.2), εHf(t) (10.3–13.0), and Mg # (38.7–41.0) values, and higher (87Sr/86Sr)i (0.704544–0.704998) than the granodiorite porphyry and gabbro, together with young Nd and Hf model ages, suggesting that the parental magmas originated from the partial melting of a juvenile lower crust. The enrichment in LREEs and LILEs (e.g., Ba, U, K and Sr) and depletion in HFSEs (e.g., Nb, Ta, and Ti) indicate that these intrusive rocks formed in the subduction zone. With the integration of previous studies, it can be inferred that the northward flat subduction of the Kangguer ocean slab at ca. 335–315 Ma caused the formation of the adakites and associated porphyry Cu mineralization in the Tuwu-Yandong belt. After the prolonged flat subduction, slab rollback may have occurred at ca. 314–310 Ma, followed by a “quiet period” before the final closure of the ancient Tianshan Ocean along the Kangguer Fault in this belt.

bareMinerals Mineral Veil Finishing Powder Duo - Limited Edition

PÃœR MINERALS 4-in-1 Sculpting Concealer, Moisturizing Formula, Covers Imperfections, Lightweight medium to full coverage, Revitalizes Complexion, Cruelty-Free, Gluten Free- DN5
Buy Instant Guide to Rocks and Minerals (Instant Guides) on ✓ FREE SHIPPING on qualified orders

Instant Guide to Rocks and Minerals (Instant Guides)

Mines, Minerals and More

As mineral prices boom, it is easier for crooked politicians to get elected

Ultimo Minerals EARTHY DARK 1oz. Refill 30 Grams Full-coverage

Complete Multivitamin, Gluten-Free, Dairy-free, Heart, Bone, Eye and B – Altipure

Trace Minerals - ZEROLyte (Salty Citrus), 30 Electrolyte Drink Packets, Powerful Hydration, Immunity, & Energy Support with Sodium & Essential Vitamins & Minerals

Minerals, Free Full-Text
Flying M Mineral, LLC

Minerals, Free Full-Text, Gemstones of Greece: Geology and Crystallizing Environments, HTML

ConcenTrace® Trace Mineral Drops

Expressions LTD GFRC Pozzolans Vitro Minerals VCAS
Recomendado para você
-
File:CAOB formation hypothesis 1.png - Wikimedia Commons15 março 2025
-
The Altai-Mongolia terrane in the Central Asian Orogenic Belt15 março 2025
-
Axial Leads Aluminum Electrolytic Capacitors, Low Leakage15 março 2025
-
Conta Brick Obsidiana Flocos 8mm CAOB-0515 março 2025
-
Origin of the Mesozoic magmatism in the North China Craton15 março 2025
-
Geochronology, geochemistry, Sr–Nd–Hf isotope composition of the15 março 2025
-
Android Apps by Onitel - Líder em Ultravelocidade on Google Play15 março 2025
-
Ringing Cedars Style Education, Q&A W/ 2 Russian Schetenin-Style15 março 2025
-
Visit Sugba Lagoon in Siargao, Philippines, for an unforgettable15 março 2025
-
Full article: Basement differences control granitoid compositions15 março 2025
você pode gostar
-
Kakashi Desenho 😀😄 Naruto Shippuden Online Amino15 março 2025
-
Withered freddy - Desenho de kpop_rainbowqrtzs2 - Gartic15 março 2025
-
EA FC 24: Web App und Companion App sind live! – Alles über Login15 março 2025
-
Chainsaw Man, Vol. 5: Volume 515 março 2025
-
ANAMNESE ESPIRITUAL A anamnese espiritual buscar compreender o15 março 2025
-
Luís Graça & Camaradas da Guiné: Guiné 63/74 - P10120: Os nossos seres, saberes e lazeres (47): Festa do pão do moinho, 1 de julho de 2012, Atalaia, Lourinhã (Parte I): O15 março 2025
-
Roblox Promo Codes, Deals From $6 In May 202315 março 2025
-
Robin, Adopt Me! Wiki15 março 2025
-
X 上的 Personagens/pessoas e suas versões do Roblox:「Ricardo / X15 março 2025
-
Epic Games oferece CUPOM de 25% e jogos gratuitos todos os dias15 março 2025