Jie Li

• Doctor of Philosophy
• Research Associate at Second Institute of Oceanography

Pyrite-marcasite assemblages, formed at steep physicochemical gradients in submarine hydrothermal systems, serve as valuable records of fluid evolution and ore-forming processes. However, gaps remain in our understanding of the detailed pathways of pyrite-marcasite formation and their dynamics of trace element enrichment in seafloor massive sulfide...

Polymetallic nodules, widely distributed in the deep seafloor of the Pacific Ocean, are characterized by their abundance of diverse metal elements and considerable economic value. Previous studies have suggested a partial biogenic origin of these nodules. This study investigated the role of microorganisms in nodule formation by examining biological...

Polymetallic ferromanganese nodules (PMNs) in the Clarion-Clipperton Zone (CCZ) exhibit significant spatial variability in chemical composition, which complicates exploration efforts and increases associated costs. The primary factors driving this spatial variability remain unclear due to limited understanding of the growth history of these nodules...

The Clarion–Clipperton Fracture Zone of the east Pacific contains numerous shallow buried nodules that are in direct contact with pore water in sediment, providing a direct reflection of the interaction between nodules and sediment. However, research on the geochemical behavior of these shallow-buried nodules is limited. This study used laser ablat...

Understanding the relationship between sulfide chimney maturity and fluid evolution in submarine hydrothermal systems is essential for deciphering mineralogical changes, sulfur dynamics, and fluid flux over time. We investigate this link through sulfur isotopic analysis of sulfides from three maturity stages of sulfide chimneys at the Niaochao hydr...

Ferromanganese nodules are a potential energy resource because of their high contents of economically interesting elements (i.e. Mn, Ni, Cu, and Zn). These are higher in diagenetic layers than in hydrogenetic layers. The study of the causes of elemental accumulation in the diagenetic layer is useful for the exploration metal-rich nodules. A diagene...

The highly siderophile elements (HSEs) in peridotites from the Yap Trench are investigated to understand their behavior in the subduction zone mantle, which is characterized by high melt depletion and metasomatism. Results reveal that the abundance of HSEs in Yap Trench peridotites is extremely low compared with that in oceanic peridotites from the...

The mantle source beneath the Southwest Indian Ridge (SWIR) reflects a complex history of contamination. Magmatic volatile contents are vital tracers of these kinds of heterogeneities, which may fractionate otherwise constant volatile/non-volatile elemental ratios, such as the H2O/Ce ratio. Although several studies have recently used trace eleme...

Discontinuities in the magmatic activity along a spreading ridge are usually observed in ultraslow-spreading ridges with a thick crust. However, the reasons for such melting anomaly are unknown. The Dragon Flag Supersegment between the Indomed Fault Zone (FZ) and the Gallieni FZ on the Southwest Indian Ridge (SWIR) is characterised by ultra-thick o...

The Okinawa Trough (OT), is a back-arc basin where rifting is in its initial stages, and where hydrothermal fields (HTFs) have developed above terrigenous sediments and volcaniclastics layers of variable thickness. The source of ore-forming materials within the hydrothermal systems of the OT is complex, and may include seawater, magmatic rock, magm...

Tungsten deposits are usually associated with granitic intrusions that record a long and complex evolution of the magmatic–hydrothermal system. However, the genetic link between magmatic–hydrothermal evolution and tungsten mineralization remains unclear. The Xihuashan tungsten deposit in South China, an important vein-type wolframite deposit, is cl...

Electron microprobe analysis was conducted on plagioclase from the plagioclase ultraphyric basalts (PUBs) erupted on the Southwest Indian Ridge (SWIR) (51°E) to investigate the geochemical changes in order to better understand the magmatic processes occurring under ultraslow spreading ridges and to provide insights into the thermal and dynamic regi...

The Dahutang tungsten deposit, located in the Yangtze Block, South China, is one of the largest tungsten deposits in the world. The tungsten mineralization is closely related to Mesozoic granitic plutons. A drill core through a pluton in the Dalingshang ore block in the Central segment of the Dahutang tungsten deposit shows that the pluton is chara...

Lithium isotope composition is potentially an effective geochemical tracer for hydrothermal processes and magmatic differentiation associated with rare-metal granitic rocks. The Yashan and Xihuashan plutons in South China are extraordinarily Li-F rich rare-metal granites that contain niobium-tantalum and tungsten deposits, respectively. As a modera...

It is generally accepted that in the Late Mesozoic, >100 km of ancient refractory lithospheric mantle beneath the eastern part of the North China Craton (NCC) was removed and replaced by young and fertile mantle material. However, the mechanisms and a tectonic model for this lithospheric destruction remain subjects of debate. To elucidate this lith...

The plagioclase-phyric basalt may preserve the details of magmatism processes and related geodynamics and tectonic settings. In this paper, we present the details of zoning plagioclase of the Late Cretaceous plagioclase-phyric basalt in the Changchengling area in the central Nanling of South China Block, in order to constrain the magma processes an...

The Dahutang tungsten polymetallic ore region, in northwestern Jiangxi Province, South China, has the super-large tungsten mine of the world, which is closely related to the Mesozoic granitic magmatism. As a ubiquitous accessory mineral in the Mesozoic granites from the Shiweidong tungsten deposit in the southern part of the Dahutang region, apatit...

The early Paleozoic Wuyi-Yunkai orogeny resulted in extensive magmatism in the Cathaysia and eastern Yangtze blocks, South China. Identifying the nature of related magmatism is essential for understanding the orogeny that remains enigmatic with regard to its tectonic setting and geodynamic driving force. The Zhangjiafang pluton (438 ± 3 Ma) in west...

The Haladala gabbroic pluton at Tekex is the largest layered mafic-ultramafic intrusion in the northern margin of southwestern Tianshan orogenic belt, and contains abundant Fe-Ti oxides (up to 15%). The rocks were highly fractionated with low Fo (64 similar to 75) olivine, low An plagioclase (mostly andesine-labradorite), and low Me-# (0. 66 simila...

The Xihuashan tungsten deposit, as one of the most important deposits in South China, has close relationship with magmatic evolution of the Xihuashan granitic complex. Micas in granitic rocks associated with the Xihuashan tungsten deposit are highly variable in two coeval trends. The trioctahedron micas changed in the evolution sequence of “Fe-biot...

The early Paleozoic Wuyi–Yunkai orogeny represents the first extensive tectonothermal event in South China since the Neoproterozoic break-up of the Rodinia supercontinent. The early Paleozoic igneous rocks in the South China Block (SCB) are important for understanding the processes responsible for the orogeny. The Taishan Batholith in the inner Cat...

The Yashan granites are typical rare-metal granites in South China and famous for enriched tantalum-niobium deposit. From early to late units of the Yashan granites, the micas varied in the types of "protolithionite >Li-mica >lepidolite" corresponding to increasing Li, F and Rb2O concentrations. The proportion of Zr substituted by other elements (e...