Coal petrology of the Yimin Formation (Albian) in the Hailar Basin, NE China: Paleoenvironments and wildfires during peat formation

Wang, Shuai; Shao, Longyi; Li, Jiaxu; Li, Jianan; Jones, Timothy Peter; Zhu, Mingyu; Zhou, Jiamin

doi:10.1016/j.cretres.2021.104815

Cited by 16 publications

(3 citation statements)

References 71 publications

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“…The sedimentary cover consists of the Cretaceous Nantun Formation (K 1 n), the Tongbomiao Formation (K 1 t), the Damoguaihe Formation (K 1 d), the Yimin Formation (K 1 y), the Neogene Huchashan Formation (N 2 h), and Quaternary formations (Q) from bottom to top. The Cretaceous Yimin Formation is a set of dark coal-bearing clastic sedimentary rocks with a high reduction capacity and represents the main uranium-bearing layer in the basin [24,25].…”

Section: Geological Backgroundmentioning

confidence: 99%

Sedimentary Environment, Tectonic Setting, and Uranium Mineralization Implications of the Yimin Formation, Kelulun Depression, Hailar Basin, China

Meng,

Nie,

Xia

et al. 2024

JMSE

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The sandstone-type uranium deposit of the Kelulun Depression is the first industrially valuable uranium deposit discovered in the Hailar Basin. This study performed a systematic examination of 17 sandstone samples from the Yimin Formation in the Kelulun Depression based on various analytical techniques. The findings of the current study were synthesized with previous research to investigate the impact of the redox conditions and the tectonic background of the source area, as well as the paleoclimatic evolution of the Yimin Formation on uranium mineralization. The elemental Mo, U/Th, V/Cr, Ni/Co, and V/(V+Ni) ratios indicate that the paleowater was in an oxygen-rich environment during the deposition of the Yimin Formation. Additionally, the C-value, Sr/Cu, Al2O3/MgO, and Rb/Sr ratios indicate that the Yimin Formation was formed in a paleoclimate characterized by arid-to-semi-arid conditions. The geochemical characteristics of the observed elements indicated that the sediment source of the Yimin Formation was mainly felsic rocks from the upper continental crust, the weathering of the rock was weak, and the tectonic background was a passive continental margin. Coffinite is distributed in the form of cementation and stellates within or around pyrite crystals, and uranium-titanium oxide is mostly distributed in an irregular granular distribution in the biotite cleavage fractures of the study area. In summary, the findings of this study reveal that the tectonic settings, provenance, uranium source, paleoclimate, and oxygen-rich paleowater of the Yimin Formation have important geological significance for the large-scale uranium mineralization of the Kelulun Depression.

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Section: Geological Backgroundmentioning

confidence: 99%

Sedimentary Environment, Tectonic Setting, and Uranium Mineralization Implications of the Yimin Formation, Kelulun Depression, Hailar Basin, China

Meng,

Nie,

Xia

et al. 2024

JMSE

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“…It could be derived from intensely gelified plant tissues and other humic substances, which are enriched in limnotelmatic deposited peat. In addition, the assemblage of huminite and mineral matter in coals is commonly used as an indication of the depositional environment of ancient mires or peatlands (Wang et al, 2020;Wang et al, 2021).…”

Section: Petrographic Compositionsmentioning

confidence: 99%

Maceral Association in Coal-bearing Formation of Mae Than Coal Mine in Lampang, Thailand - Implication for Depositional Environment

Sattraburut

Ratanasthien

2021

Environ. Nat. Resour. J.

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The Mae Than Basin in Lampang Province contains low-ranked coal reserves of northern Thailand. Coal seams and ball clays were mined in the southern part of the basin. This study focuses on the coal petrography of coal samples collected from the upper coal seam in the Mae Than Coal Mine. Both the organic and inorganic constituents provide information on the nature and characteristics of the coal, reflecting the physical and chemical behaviors of coal. Petrological analysis reveals that the Mae Than coals contain more huminite than liptinite macerals, while inertinite is negligible. Huminite occurs mainly in the form of texto-ulminite, textinite, densinite, and gelinite. Liptinite consists of sporinite, cutinite, resinite, suberinite, liptodetrinite, and terpenite. The morphology of cutinite, sporinite, and the presence of terpenite indicate that the peat-forming vegetation may consist of conifers. In addition to the macerals, the coal samples contain a small to moderate amount of mineral matter. Silica and clay minerals are the main minerals found in the cavities and between the cracks of the coals. The assemblage of macerals and mineral matter indicates that the Mae Than coals were formed mainly from common peat-forming vegetation, possibly conifers, in a freshwater forest swamp or mire in a warm temperate climate. In addition, the high degree of preservation of the macerals indicates a high water table and suggests rheotrophic, anoxic, limnotelmatic to telmatic conditions during deposition.

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“…Although the origin of inertinite is still under frequent debate, more recent studies have concluded that inertinite is synonymous with charcoal and is almost exclusively considered as the byproduct of wildfires (e.g., Scott and Glasspool, 2007;Diessel, 2010;Glasspool and Scott, 2010;Glasspool et al, 2015). Inertinite is common throughout much of the Cretaceous Period (Diessel, 2010;Wang et al, 2021a), and recent evidence indicates widespread and frequent wildfires occurred during the Cretaceous (Bond and Scott, 2010;Brown et al, 2012;Sender et al, 2014;Moore et al, 2021;Wang et al, 2019bWang et al, , 2021b. Thus, the Cretaceous has been considered as a "high-fire" world (Brown et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Widespread wildfires linked to early Albian Ocean Anoxic Event 1b: Evidence from the Fuxin lacustrine basin, NE China

Shao

Eriksson

et al. 2022

Global and Planetary Change

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Coal petrology of the Yimin Formation (Albian) in the Hailar Basin, NE China: Paleoenvironments and wildfires during peat formation

Cited by 16 publications

References 71 publications

Sedimentary Environment, Tectonic Setting, and Uranium Mineralization Implications of the Yimin Formation, Kelulun Depression, Hailar Basin, China

Sedimentary Environment, Tectonic Setting, and Uranium Mineralization Implications of the Yimin Formation, Kelulun Depression, Hailar Basin, China

Maceral Association in Coal-bearing Formation of Mae Than Coal Mine in Lampang, Thailand - Implication for Depositional Environment

Widespread wildfires linked to early Albian Ocean Anoxic Event 1b: Evidence from the Fuxin lacustrine basin, NE China

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