Fangyang Hu

• PhD
• Special-termed associated professor at Chinese Academy of Sciences

We present compiled geochemical data of young (mostly Pliocene-present) intermediate magmatic rocks from continental collisional belts and correlations between their whole-rock Sr/Y and La/Yb ratios and modern crustal thickness. These correlations, which are similar to those obtained from subduction-related magmatic arcs, confirm that geochemistry...

Plain Language Summary Paleo‐elevation is an important factor in understanding the mountain building processes. Strong correlations are observed between crustal thickness, elevation, and Sr/Y and (La/Yb)N of magmatic rocks for both subduction‐related and collision‐related mountain belts. We established empirical equations derived from modern exampl...

Plain Language Summary How the Tibetan Plateau grows outward and deformed remains controversial. A large‐scale crustal flow model has been favored for the expansion of the southeast Tibetan Plateau, arguing that crustal materials could flow hundreds of km resulting in crustal thickening and uplift. Detailed geochemical and isotopic investigations o...

This paper presents a study of a newly discovered pollucite-lepidolite-albite granite (PLAG) in the Himalayan leucogranite belt, which marks the first occurrence of pollucite, a major cesium silicate mineral, in the Himalayan orogenic belt (China). The rock appears at the northern part of the Gyirong pluton, coexisting with the tourmaline-bearing t...

The redox state of arc mantle has been considered to be more oxidized and diverse than that of the mid-ocean ridge, but the cause of the variation is debated. We examine the redox state of the Cenozoic global arc mantle by compiling measured/calculated fO2 of olivine-hosted melt inclusions from arc magma and modeled fO2 based on V/Sc and Cu/Zr rati...

Himalayan leucogranites were once overlooked for rare-metal resources because they initially were thought to have formed by in-situ partial melting of underlying high-grade metamorphic rocks. However, recent findings have revealed widespread rare-metal mineralizations of Be, Nb/Ta, Li/Rb/Cs, and W/Sn associated with leucogranites in the area, sugge...

The understanding of magmatic-hydrothermal evolution during lithium mineralization remains unclear. Zircon, a prevalent accessory mineral in granites and pegmatites, has the potential to provide insights into the magmatic evolutionary process through its trace element composition. In this research paper, we studied the trace element compositions of...

In recent years, breakthroughs have been made in prospecting and researching Himalayan rare metals, making the Himalaya a new strategic mineral resource base in China. This study studied the petrography, mineralogy and chronology of skarn in the Tsalung, Gangbu and Nyalam districts in the northern of Gyirong pluton, mount Shisha Pangma region and p...

In recent years, the research and prospecting of Himalayan rare metal mineralization have made significant breakthroughs, making Himalaya an important rare metal mineralization belt in China. This paper reports the first outcrop discovery of spodumene-bearing pegmatite in the Shisha Pangma region. The outcropped spodumene-bearing pegmatite locates...

Rare-metal pegmatite represents the most differentiated magmatic system on earth, containing high concentrations of rare metals (Li, Rb, Cs, Be, Ta, Nb, and Sn) and fluxing components. Recent studies have shown that the Himalayan leucogranite–pegmatite system has considerable potential for rare-metal mineralization. A new spodumene pegmatite-type L...

The continental collision between the Indian and Asian plates constitutes one of the most distinguished convergent systems on a global scale. Geophysical data have revealed that subducted Indian slab lies beneath the Lhasa terrane of the Asian plate. However, whether, when, and how the Indian continental crust contributed to the magmatism in the Lh...

西藏喜马拉雅淡色花岗岩带中新发现铯沸石锂云母钠长花岗岩, 其中铯沸石是首次在中国喜马拉雅带内发现的铯独立矿物. 该岩石位于吉隆岩体的北部, 与吉隆岩体电气石二云母花岗岩共生. 其主要稀有金属矿物包括锂云母、锂辉石、铯沸石、锡石和细晶石等. 矿物化学分析结果显示, 云母主要为含锂白云母-锂云母, Li2O和Rb2O平均含量为4.07wt.%和0.76wt.%; 锂辉石的Li2O平均含量为7.95wt.%; 铯沸石的Cs2O和Rb2O平均含量为34wt.%和0.16wt.%. 全岩Li2O、Rb2O和Cs2O含量分别为0.49~1.19wt.%, 0.12~0.24wt.%和0.69~2.33wt.%, 均达到了工业品位. 锡石和独居石定年结果表明, 该岩石形成于19~18Ma, 略晚于吉隆电气...

Mica exhibits a relatively high Rb/Sr ratio and possesses a closure temperature for the Rb-Sr isotope system that is higher than the ore-forming temperature range of low- to medium-temperature deposits. Consequently, utilizing the laser ablation (LA) technique for in situ Rb-Sr dating in mica constitutes a significant methodology for resolving the...

Source-to-sink evolution of a basin is a key to understand sedimentary processes, especially in a complex regional orogenic setting. Detrital zircon populations can be traced from their primary sources to their depositional settings. The resulting interpretations are enhanced by calculation of the adjacent orogen's paleoaltimetry, which provides ad...

Exploring the nature of Archean plate tec-tonics is crucial for understanding the geo-dynamic evolution of early Earth. While previous studies have focused on (ultra-)mafic metavolcanic and tonalite-trondhjemite-granodiorite (TTG) rocks, the crust-mantle interactions of Archean intermediate mag-matism have received much less attention. Mesoarchean...

Several giant industrial-grade rare-metal deposits have been discovered in the Himalaya most recently. However, the mechanism of how rare-metals mineralization formed in the prototype of the collisional belt is poorly understood, mainly due to insufficient studies on mineralogy, petrology and emplacement conditions. In this study, we have reported...

How Earth switched from any earlier regimes such as plume-lid tectonics to plate tectonics remains an unresolved issue in Earth sciences. We report early Neoarchean (~ 2.77–2.68 Ga) metavolcanic rocks, including older calc-alkaline basaltic-andesitic rocks in the southwest but younger tholeiitic rocks in the northeast, from Jiaobei terrane, North C...

Granitoids, as a major component of the Earth’s crust, have large K isotopic variations (δ41K = - 1.0‰ to 0.4‰), but K isotope fractionation during granite differentiation is poorly constrained. Here, we examined K isotopic compositions of a suite of well-characterized crustal igneous rocks (quartz diorite, granodiorite and monzogranite) from the T...

The redox evolution of Archean upper mantle impacted mantle melting and the nature of chemical equilibrium between mantle, ocean and atmosphere of the early Earth. Yet, the origin of these variations in redox remain controversial. Here we show that a global compilation of ∼3.8-2.5 Ga basalts can be subdivided into group B-1, showing modern mid-ocea...

Eastern Myanmar is located at the junction of the Changning-Menglian and Chiang Rai-Chiang Mai zone and is a crucial region for constraining the evolution of the eastern Paleo-Tethys. This study presents new zircon U-Pb geochronologic, mineral and whole-rock geochemical, and Sr-Nd-Hf-O isotopic data for magmatic rocks from the Sukhothai arc in east...

The enrichment of rare metal elements in metasedimentary rocks is consider as an essential prerequisite of the formation of granitic pegmatite-type rare metal deposits. However, the causes and critical factors of enrichment of rare metal elements in metasedimentary rocks are still unclear. The Songpan-Ganzi orogenic belt, as an important enrichment...

Accretionary orogens function as major sites for the generation of continental crust, but the growth model of continental crust remains poorly constrained. The Central Asian Orogenic Belt, as one of the most important Phanerozoic accretionary orogens on Earth, has been the focus of debates regarding the proportion of juvenile crust present. Using p...

The redox evolution of Archean mantle impacted Earth differentiation, mantle melting and the nature of chemical equilibrium between mantle, ocean and atmosphere of the early Earth. However, how and why it varies with time remain controversial. Archean mantle-derived volcanic rocks, especially basalts are ideal lithologies for reconstructing the man...

Constraining thickness and geothermal gradient of Archean continental crust are crucial to understanding geodynamic regimes of the early Earth. Archean crust-sourced tonalitic–trondhjemitic–granodioritic gneisses are ideal lithologies for reconstructing the thermal state of early continental crust. Integrating experimental results with petrochemica...

Determining the geochronological framework and geochemical nature of magmatism associated with orogenic processes is crucial to establish the evolution of orogenic belts. The Himalayan orogen has recorded considerable information regarding deformation, metamorphism, and magmatism related to orogenic processes. Here, we identify four stages of grani...

Thermal state and crust- A nd mantle-sou reed magmatism are crucial to understanding geodynamic regime of early formation and evolution of continental crust. The North China Craton ( NCC) is one of a few Archean cratons with records of Late Neoarchean (ca. 2.6 2. 5Ga) volcanic rocks in the world, which has important significance for revealing Late...

Assigned area is tectonically lie between Sibumasu Block and Indochina Block which also called accretionary zone or suture zone. From east of Thanlwin river to Kyaing Tong where Permian limestone, Triassic granite intrusion and low grade metamorphic units are lied tectonically juxtaposed together with imbricate thrust sheets. The structural vergenc...

Andalusite, as a common aluminosilicate mineral in felsic rocks, can be divided into three types: metamorphic, magmatic and peritectic. Metamorphic andalusite mainly exists in metapelite and is a product of metamorphic reactions of minerals such as muscovite, quartz, biotite and feldspar under low pressure. Magmatic and peritectic andalusite mainly...

The Main Range and Eastern Provinces are two major granite belts in Southeast Asia. These granite belts extend southward from the southeastern Tibetan Plateau to Myanmar, and through Thailand into Peninsular Malaysia. They are interpreted to represent the magmatic expression of the closure of the Paleo-Tethys from the Permian to the Triassic. Myanm...

Constraining the thickness and geothermal gradient of Archean continental crust are crucial to understanding geodynamic regimes of the early Earth. Archean crust-sourced tonalitic–trondhjemitic–granodioritic gneisses are ideal lithologies for reconstructing the thermal state of early continental crust. Integrating experimental results with petroche...

The Qinling Orogenic Belt in Central China is formed by an oblique continental collision between the North China and South China Blocks. In this review, we summarize the knowledge of the early Mesozoic magmatism, in combination with the coeval metamorphic characteristics, regional structural features and depositional history in the foreland and hin...

The crustal generation of the Paleo-Tethys orogenic belt in the southeastern Tibetan Plateau is a major unresolved geological problem. The Changning-Menglian suture in the southeastern Tibetan Plateau represents a remnant of the Paleo-Tethys Ocean. The Lincang batholith and associated volcanic rocks (the Manghuai rhyolites and Xiaodingxi basalts) a...

The Changning-Menglian suture in the Sanjiang region of SW China, the Chiang Rai line in Thailand, and the Bentong-Raub suture in Peninsular Malaysia are marked by remnants of the Paleo-Tethys oceanic lithosphere in Mainland Southeast Asia. We present U-Pb ages and Hf isotopic compositions of zircon from Luyingtang granites east of the Changning-Me...

Middle Neoarchean granitoids contain crucial clues for understanding crust–mantle interactions and further investigating the mechanism of the compositional transformation of the crust in the Neoarchean. In the Western Shandong Terrane (WST), diverse Neoarchean magmatism is recognized, including ∼2.62 Ga tonalitic gneisses, ∼2.59 Ga granodioritic gn...

Quartz monzodiorites, granodiorites and monzogranites constitute the dominant lithological assemblage in the Neoarchean Tengzhou-Pingyi intrusive complex (TPIC) in the southwestern part of western Shandong Province (WSP) in the eastern part of the North China Craton (NCC), and mafic magmatic enclaves (MMEs) are widely developed only in granodiorite...

The Neoarchean Yishui Terrane (YST) is situated in the east of Western Shandong Province (WSP), south-eastern margin of the North China Craton (NCC). The metavolcanic rocks of the YST are fine-grained hornblende plagioclase gneisses (Group #1) and fine-grained amphibolites (Group #2) in the Yangzhuangzhen area and fine- to medium-grained amphibolit...

The Neoarchean Western Liaoning basement terranes in the northern part of North China Craton chiefly consist of tholeiitic basalts in the north, TTG gneisses and metavolcanic rocks in the northwest, and K-rich granitoids in the southeast. In the southeastern zone, porphyritic monzodioritic-quartz monzodioritic-granodioritic-monzogranitic (MQGM) gne...

Late Neoarchean plutonic rocks in the eastern range of the Western Shandong (WSD) terrane, North China Craton, consist of fine-grained monzogranites (Group #1), fine-grained monzogranitic gneisses (Group #2), coarse-grained granodioritic gneisses (Group #3) and coarse-grained gabbro-diorites (Group #4). The first three groups of granitoids exhibit...

The Qinling Orogenic Belt in central China, which resulted from continent-continent collision, is an excellent area for the study of collision-related magmatism. An integrated study including detailed field investigations, petrography, mineral and whole-rock geochemistry, zircon U–Pb–Hf–O isotopes, and geochemical modeling was carried out on the Hu...

The Precambrian Hongqiyingzi Complex (HQC) in the middle segment of the northern margin of the North China Craton (NCC) is a crucial magmatic intrusive complex offering insights into the early evolutionary history of the northern margin of the NCC. The HQC, exposed from Congli to Longhua towns in the northern Hebei Province, is mainly composed of N...

The eastern Hebei-western Liaoning provinces are the largest exposure regions of Archean basement rocks in the northern part of North China Craton. Comprehensive studies including detailed mapping of lithological assemblages reveal that the Archean basement rocks in the study regions can be subdivided into eight different assemblages, i. e., 2.64-2...

The medium-grained monzogranitic–syenogranitic gneisses expose as roughly northeast–southwest-trending and cover ～1500 km² in the southern part of the Eastern Hebei–Western Liaoning Province, North China Craton. These plutonic gneisses have leucocratic features and weakly gneissic to massive structures, and were metamorphosed under greenschist to l...

The Archean Beitai-Waitoushan migmatite-syenogranite complex (BWMC) is located in the northeast of the Anshan-Benxi continent block (ABCB) where has ∼3.8 Ga rocks outcropped in the northeastern North China Craton (NCC). The BWMC consists chiefly of weakly migmatized tonalitic-trondhjemitic gneisses, migmatites with various volumes of potassium-rich...

Widespread Late Triassic granitoid rocks in the South Qinling Belt (SQB) represent excellent subjects to study the geochemical and geodynamic evolution of magmatic rocks during the collision between the North China Craton and South China Block. In this study, we report new geological, geochemical, zircon U–Pb geochronology and zircon Hf isotopic da...

Late Triassic granitoid intrusions are widespread in the South Qinling Belt (SQB), providing excellent subjects to understand the geodynamic evolution of the Qinling Orogenic Belt and the collision between the North China Craton (NCC) and Yangtze Craton (YZC). This study shows new obtained geological, geochemical and zircon U–Pb–Hf isotopic data of...

The Qinling Orogenic Belt (QOB) located between the North China Craton (NCC) and the Yangtze Craton (YZC) is composed of the North Qinling Belt (NQB), the South Qinling Belt (SQB) and the northern margin of the YZC. Detailed geological and geochronological investigations have revealed distinct Neoproterozoic blocks of various scales in the middle a...

The Qinling Orogenic Belt marks the link between the South China and North China Blocks and is an important region to understand the geological evolution of the Chinese mainland as well as the Asian tectonic collage. However, the tectonic affinity and geodynamic evolution of the South Qinling Tectonic Belt (SQTB), a main unit of the Qinling Orogeni...

The Hadean to Paleoarchean continental crust consists of both granitoid gneiss terrenes and greenstone belts. A number of investigations revealed the ~4.4 Ga oldest detrital zircon ages of continental crusts marked by granitic rocks, and the earliest tonalitic and granodioritic gneisses were formed at ~4.03 Ga as well as the oldest greenstone belts...

Shuangshanzi Group locates in the Shuangshanzi-Zhuzhangzi area of eastern Hebei Province and is composed of low-grade metamorphosed volcanic-sedimentary rocks, mainly comprising plagioclase amphibolite, biotite amphibole plagioclase gneiss, felsic schist or gneisses. Whole-rock geochemical analyses reveal that magmatic precursors of metamorphosed v...