bayan obo geotectonically

Abstract. Geotectonically, the Bayan Obo deposit is located on the northern margin of the North China platform. When the Proterozoic Bayan Obo Group was …

Geotectonically, the Bayan Obo deposit is located on the northern margin of the North China platform. When the Proterozoic Bayan Obo Group was formed, the area was probably a rift tectonic ...

The Chinese Bayan Obo deposit is a world-class rare earth element (REE) deposit with considerable niobium (Nb) and iron (Fe) resources. A complete genetic understanding on all metals is fundamental for establishing genetic models at Bayan Obo. With extensive research being focused on REE enrichment, the timing and controls of Nb …

The Bayan Obo deposit locates in the northern margin of the North China Craton (Fig. 1).The basement rocks to the area consist of Neoarchean (~2.5 Ga) mylonitic granite-gneiss, and Paleoproterozoic (~2.0 to ~ 1.9 Ga) syenite, granodiorite and granite-gneiss (Wang et al., 2002, Fan et al., 2010).Starting around 1.8 Ga, the North China …

@article{Liu2023CarbonatiterelatedDR, title={Carbonatite-related delicate REE mineralization processes revealed by fluorocarbonates and monazite: insights from the giant Bayan Obo REE-Nb-Fe deposit, China}, author={Shang Liu and Hongrui Fan and Qi-Wei Wang and Yan-Jiang Liu and Wei Wei}, journal={Ore Geology Reviews}, …

Bayan Obo is an epigenetic, metasomatic, hydrothermal rare earth element (REE)-Fe-Nb ore deposit that is hosted in the metasedimentary H8 dolostone marble of the Middle Proterozoic Bayan Obo Group. The metasedimentary sequence was deposited on the northern continental slope of the North China craton. The mine area is about 100 km …

In the Bayan Obo deposit, REE ores are hosted in dolomites (including coarse-grained and fine-grained varieties), and many carbonatite dikes (ferroan, magnesian, and calcic) have …

Geotectonically, the Bayan Obo ore deposit is situated on the northern margin of the Inner Mongolian plat- form. The basement in the region consists of the Pro- terozoic Wutai Group and Bayan Obo Group. The deposit is located in the Bayan Obo syncline, which includes, in ascending order, three major rock groups:

The Bayan Obo area is located on the northern margin of the North China Craton, bordered to the north by the Central Asian Orogenic Belt (Yang et al., 2011a; Fig. 2 A).The North China Craton formed through the accretion of microcontinental blocks from 2.2 Ga to ~ 1.85 Ga (Zhao et al., 2011).The basement to the area consists of the Archaean …

The Bayan Obo REE-Nb-Fe deposit is located on the north margin of the North China Craton (NCC) (Fig. 1).Archean and Paleoproterozoic metamorphic basement rocks are preserved in this region (Liu et al., 2011).During the breakup of Columbia Supercontinent, a series of Paleo-Mesoproterozoic (~1.8–1.4 Ga; Zhong et al., 2015, Liu …

DOI: 10.1016/J.OREGEOREV.2021.104405 Corpus ID: 238706887; Identification of ~1.3 Ga hydrothermal zircon from the giant Bayan Obo REE deposit (China): Implication for dating geologically-complicated REE ore system

The Bayan Obo REE–Nb–Fe deposit is located in Inner Mongolia, China (109°59′E, 41°48′N), about 2 km from the Bayan Obo town (Fig. 1 a).The REE ore-bodies are principally hosted in the H8 dolomite marble of the Bayan Obo Group (Nie et al., 2002), and historically, have primarily been mined for their Fe-ore (magnetite).The Bayan Obo …

Bai Ge's 6 research works with 145 citations and 950 reads, including: Trachytic Rock and Associated Fenitization in the Bayan Obo Ore Deposit, Inner Mongolia, China: Evidence for Magmatic ...

Combined with previous geological, geochemical, and geophysical studies, our results reveal the possible 3D spatial distribution of the ore-bearing dolomite beneath the Bayan …

Combined with previous geological, geochemical, and geophysical studies, our results reveal the possible 3D spatial distribution of the ore-bearing dolomite beneath …

Abstract Geotectonically, the Bayan Obo deposit is located on the northern margin of the North China platform. When the Proterozoic Bayan Obo Group was formed, the area was probably a rift tectonic environment. Dolomite, the main wall rock (or host rock) of the orebody of the Bayan Obo REE deposit, shows a distinct stratified structure and is ...

Abstract. Geotectonically, the Bayan Obo deposit is located on the northern margin of the North China platform. When the Proterozoic Bayan Obo Group was formed, the area was probably a rift...

Bayan Obo ore deposit is the world's largest rare-earth element (REE) resource, the second largest niobium (Nb) resource, and also a significant iron (Fe) resource in China. Evaluating resource potential for the deposit has become a focus of global interest. Rock-physical properties bridge geophysical exploration and geologic …

The Bayan Obo carbonatite-associated REE–Fe–Nb deposit in Northern China is the world's main supplier of REE, and also host a significant Nb resources of 2.2 Mt Nb 2 O 5 at an average grade of 0.13 % (Chao, 1997, Fan et al., 2016, Fig. 1).The Bayan Obo deposit exhibits a combination of characteristics of mantle-derived carbonatite and …

The Bayan Obo REE-Nb-Fe deposit located in Inner Mongolia, China, is the world's largest rare earth deposit. The diagenesis and mineralization processes of this …

The giant Bayan Obo deposit in China represents the largest rare earth element (REE) resource in the world, but the mechanisms for its highly anomalous REE enrichment have long been controversial. The central debate concerns the nature and origin of the ore-hosting dolomite. In this study, a texturally constrained microanalytical study of ...

Bayan Obo, giản thể: ; phồn thể: ; bính âm: Báiyún Èbó Kuàngqū, Hán Việt: Bạch Vân Ngạc Bác khoáng khu), hay Baiyun-Obo hoặc Baiyun'ebo, là một đơn vị hành chính trực thuộc thành phố Bao Đầu, khu tự trị Nội Mông Cổ, Trung Quốc.Đây là một khu vực khai khoáng ở phía tây của Nội Mông và ...

The unique, giant, rare earth element (REE) deposit at Bayan Obo, northern China, is the world's largest REE deposit. It is geologically complex, and its genesis is …

Detailed compositional data for the Bayan Obo aegirine and for aegirine and aegirine-augite from nepheline syenites from the Boavista Island (Cape Verde Archipelago), and from other geological settings, reveal that the Bayan Obo aegirine is characterised by significantly lower Ti contents (< 0.5 wt.% TiO 2) with respect to the aegirine from ...

The unique, giant, rare earth element (REE) deposit at Bayan Obo, northern China, is the world's largest REE deposit. It is geologically complex, and its genesis is still debated. Here, we report in situ Th-Pb dating and Nd isotope ratios for monazite and Sr isotope ratios for dolomite and apatite from fresh drill cores. The measured monazite ...

Bayan Obo REE-Nb-Fe ore deposit in Inner Mongolia is the largest light REE deposit in the world. It is located in the northern margin of the North China Craton (Wang et al., 1992), and hosted in Mesoproterozoic Bayan Obo Group (Li, 1959).The Bayan Obo Group consists of an over 10 km thick succession of low-grade metamorphosed …

The Bayan Obo Fe–REE–Nb deposit is located in Inner Mongolia, China (109° 59′ E; 41° 48′ N), and has estimated total reserves of 600 Mt of iron oxides (Yuan et al., 1992) and in excess of 100 Mt REE–oxide (Ren, 1985).The deposit is contained within the sediments of the Proterozoic Bayan Obo Group (Fig. 1), which consists …

Analysis on folds and faults of the Bayan Obo REE-Nb-Fe orefield indicates that its structural activities witnessed multi-stage evolution.There exist at least four periods of structural activities from Mesoproterozoic to Hercynian which control metallogenesis and diagenesis, including the nearly EW-trending litho-controlling fault (F1), the nearly EW …

But nothing could be further than the truth. The level of pollution in Baotou, a city located 120 kilometers south of the Bayan Obo mines, is nauseating. The prefecture-level city where the factories and refineries are located, is home to 2.6 million people. Skyline of Baotou. Photo credit: Liam Young/Unknown Fields.

The northern Darhan Muminggan Joint Banner of Inner Mongolia, geotectonically crossing two geological-structural units, is divided into two parts by Bayan Obo-Chifeng deep fault (plate boundary fault). To the south of the deep fault is the North China block, and to the north is the accretion zone at the northern edge of North China plate. An important …

The Bayan Obo Group accumulated over 10 km thick sediments, consisting of sandstone, siltstone, limestone and dolomite. It is divided into a lower regressive series (members H1–H10) and a upper transgressive series (members H11–H18), both of which have been affected by regional epi-metamorphism and local contact metamorphism …

@article{Wei2023ZirconHI, title={Zircon Hf isotopic compositions of the basement gneiss in Bayan Obo: Constraints on crustal evolution of the Yinshan Block in the North China Craton}, author={Ying Wei and Mingxing Ling and Hong Zhang and Yulong Liu and Xiao-Yong Yang}, journal={Solid Earth Sciences}, year={2023}, url={https://api ...

In 2009 China produced 95% of the world's supply of these elements, and it's estimated that the Bayan Obo mines just north of Baotou contain 70% of the world's reserves. But, as we would discover ...

The metamorphic clastic sequences of the Bayan 70 Obo Group represent sedimentary units deposited within the Bayan Obo pericratonic rift. 71 The REE deposit is hosted by the H8 dolomite rock, which extends for 18km laterally at a 72 width of >1km, and occurs as a spindle-shaped stratiform body.

Bayan Obo ore deposit is the largest rare-earth element (REE) resource, and the second largest niobium (Nb) resource in the world. Due to the complicated …