Intraplate Magmatism and Metallogeny of North Vietnam

Tran, Hoa Trong; Polyakov, G. V.; Trần, Anh Tuấn; Борисенко, А.С.; Изох, А. Э.; Balykin, Pavel A.; Ngo, Phuong Thi; Pham, Duy Khanh

doi:10.1007/978-3-319-25235-3

Cited by 20 publications

(8 citation statements)

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“…1a-b), with displaced correlative units in northern Vietnam (Song Da zone). It hosts many economically important Fe-Ti-V oxide deposits, Ni-Cu-(PGE) sulfide deposits and native Cu deposits (Zhou et al, 2002;Ali et al, 2005;Zhu et al, 2007;Jian et al, 2009;Shellnutt, 2014;Tran et al, 2016). The Emeishan flood basalts constitute a significant part of the ELIP, and are up to ~5 km maximum thickness in the western part of the ELIP (i.e.…”

Section: Geology Of the Western Yangtze Blockmentioning

confidence: 99%

Ore genesis of the Fule Pb Zn deposit and its relationship with the Emeishan Large Igneous Province: Evidence from mineralogy, bulk C O S and in situ S Pb isotopes

et al. 2018

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Magmatic activity plays an important role in mineralization, but little is understood of its role with respect to carbonate-hosted stratabound epigenetic Pb-Zn deposits. The Fule Pb-Zn deposit (~10 Mt of sulfide ore with mean grades of 15-20 wt. % Zn + Pb), is stratigraphically placed in middle Permian strata and spatially (~1 m) associated with late Permian continental flood basalts of the Emeishan Large Igneous Province (ELIP). It thus provides an ideal case to investigate its genetic relationship with the ELIP. In addition, the Fule deposit is characterized by high concentrations of Ag, Cd, Ge and Ga, and contains a variety of Cu and Ni sulfide minerals. Syn-ore calcite (δ 13 C = +2.57-+3.01‰) and associated fluids (δ 13 C = +2.96-+3.40‰) have δ 13 C values similar to those of fresh limestone (δ 13 C = +1.58-+2.63‰), but the δ 18 O values of calcite (+16.83-+19.92‰) and associated fluids (+7.80-+10.89‰) are distinctly lower than those of limestone (δ 18 O = +21.85-+23.61‰). This means that C is mainly derived from limestone, whereas the O isotope signature may be related to water/rock (W/R) interaction between mantle and/or metamorphic fluids and limestone. δ 34 S values of sulfide minerals obtained by in situ NanoSIMS and conventional bulk techniques record a range of +9.8-+23.1‰ and +10.04-+16.43‰, respectively, reflecting the enrichment of heavy S isotopes in the oreforming fluids and thermochemical sulfate reduction (TSR) is the principal mechanism for the formation of S 2-. Cores of sulfide crystals have much higher δ 34 S values than their rims, indicating a probable mixture of multiple S reservoirs and/or a dynamic fractionation of S isotopes occurred during sulfide precipitation. The uniform femtosecond (fs) LA-MC-ICPMS in situ Pb isotopic data for galena plot in the field that differs from any of the three potential 3 sources in the region. Such signatures demonstrate that metal Pb was most likely derived from a well-mixed source of basalts, sedimentary rocks and basement rocks. We propose that (a) the enrichment in Ag, Cu, Ni, Cd, Ge and Ga, and the isotope signatures of hydrothermal minerals in the Fule region are related to fluids derived from or flowed through multiple reservoirs; (b) Emeishan magmatism provided heat, elements and associated fluids, and its basalts acted as an impermeable and protective layer; and (c) fluid mixing caused TSR, and then resulted in W/R interaction and CO2 degassing, all of which played a key role in the precipitation of hydrothermal minerals.

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Section: Geology Of the Western Yangtze Blockmentioning

confidence: 99%

Ore genesis of the Fule Pb Zn deposit and its relationship with the Emeishan Large Igneous Province: Evidence from mineralogy, bulk C O S and in situ S Pb isotopes

et al. 2018

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“…Geological studies of the southwestern Red River Delta divide igneous stone found there into two main categories based on geological formation. The Song Ma zone, created by the collision of the South China and Indochina blocks during the Indosinian orogeny in the middle Triassic [ 47 , 48 ] and the Song Da rift structure, which is related to Permian volcanism associated with the formation of the Emeishan large igneous province [ 49 – 53 ]. Igneous stone from the Song Ma zone includes ophiolites (gabbro, basalt and metabasalt) that bear geochemical similarity to mid-ocean ridge basalt [ 54 ].…”

Section: Research Settingmentioning

confidence: 99%

“…Igneous stone from the Song Da rift structure is broadly divided into two categories: low-Ti basalt (TiO 2 wt% < 1.0) and high-Ti basalt (TiO 2 wt% > 1.0). High-Ti basalt is considered to originate from enriched mantle sources whereas low-Ti basalts are thought to originate from depleted mantle sources [ 53 ].…”

Section: Research Settingmentioning

confidence: 99%

Geochemical fingerprinting of Pleistocene stone tools from the Tràng An Landscape Complex, Ninh Bình Province, Vietnam

Utting

2022

PLoS ONE

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Raw material analyses of prehistoric stone tool assemblages can reveal insight into mobility and exchange patterns in hunter-gatherer populations by reconstructing the circulation of stone throughout ancient landscapes. In Pleistocene Southeast Asia, stone tools are generally thought to have been fashioned from easily accessible local raw materials. However, despite the consistent presence of stone tools made of igneous raw material at prehistoric sites throughout the Tràng An Landscape Complex in northern Vietnam, there are no sources of igneous raw material in the immediate vicinity. This paper presents the results of geochemical sourcing analysis of late Pleistocene igneous stone tools from Tràng An: the first analysis of its type in mainland Southeast Asia. The results shed light on mobility and raw material provisioning strategies in Pleistocene mainland Southeast Asian hunter-gatherer populations and raise questions surrounding the relationship between technological organization, raw material, and expediency in Southeast Asian stone tool assemblages.

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“…13), а также детальные петролого-геохимические и геохронологические исследования, проведенные для габбро-гранитной серии Нуйчуа -Пиабиок (Р 2 /Т 3 ), отражающей мантийное воздействие Эмейшаньского плюма на глубинные уровни земной коры Северного Вьетнама (см. обзор [Vladimirov et al, 2012;Tran et al, 2016].…”

Section: обсуждение результатовunclassified

Thermochronology of Granitoid Batholiths and Their Transformation Into Metamorphic Core Complexes (Example of Song‐chai Massif, Northern Vietnam)

Владимиров

Травин

Ань

et al. 2019

Geodin. tektonofiz.

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Based on the reconstruction of the thermal evolution of granitoid batholith, represented by the Song‐Chai gneiss‐granite massif (Northern Vietnam), the long‐term existence of granitoid magma at deep levels of the Earth's crust (H≥25 km, Δt~20–50 Ma) is established. The geodynamic analysis of the granitoid batholith and mathematical modeling of its thermal history shows that the magmatic chamber should be considered as a thermal trap at the lower level of the crust, which preserved residual granite melts for a long time. Activation of the magmatic chamber occurs in post‐collisional strike‐slip fault zones and is accompanied by tectonic exhumation of large crustal segments. As a result, the batholith is transformed into a Cordilleran‐type metamorphic core complex, residual rare‐metal melts are emplaced, and, commercial deposits are thus formed.

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Intraplate Magmatism and Metallogeny of North Vietnam

Cited by 20 publications

References 0 publications

Ore genesis of the Fule Pb Zn deposit and its relationship with the Emeishan Large Igneous Province: Evidence from mineralogy, bulk C O S and in situ S Pb isotopes

Ore genesis of the Fule Pb Zn deposit and its relationship with the Emeishan Large Igneous Province: Evidence from mineralogy, bulk C O S and in situ S Pb isotopes

Geochemical fingerprinting of Pleistocene stone tools from the Tràng An Landscape Complex, Ninh Bình Province, Vietnam

Thermochronology of Granitoid Batholiths and Their Transformation Into Metamorphic Core Complexes (Example of Song‐chai Massif, Northern Vietnam)

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