Insights into The Crustal Evolution and Tungsten Mineralization of The West Cathaysia Block: Constraints from The Inherited Zircons from The Mesozoic Dengfuxian and Paleozoic Tanghu Plutons, South China

The formation and evolution of the ancient continental crust are crucial issues in solid-earth geology which commonly associated with global tectonic events economically valuable magmatic-hydrothermal ore deposits. Cathaysia Block, one continents Southeast Asia, can be subdivided into two parts: West Block East Block. Unlike no Precambrian rocks exposed constraining further understanding this block. In study, a total four hundred thirty-three zircon U-Pb dating analyses eighteen Lu-Hf isotopic on grains from Jurassic Dengfuxian granites Ordovician Tanghu granites, Nanling Range, were carried out. LA-ICP-MS yields mean average 206Pb/238U ages 152.6 ± 2.2 Ma (MSWD = 1.6) 442.4 1.7 3.8), regarded as rock-forming age for respectively. 207Pb/206Pb inherited zircons range 522 to 3395 Ma, hosting major peaks at 0.9–1.0 Ga 2.4–2.5 Ga. contrast lacks peak 1.8–1.9 Ga, indicating that was not influenced by assembly Columbia supercontinent Paleo-Proterozoic. combination isotopes, we proposed Archean is dominated juvenile crustal growth events, reworking since Proterozoic. long duration resulted enrichment lithophile elements (e.g., W, Sn, Nb, Ta) region. Therefore, mainly derived partial melting Proterozoic basement rocks, became large-scale tungsten polymetallic mineralization.