Coal Seam Correlation in Terrestrial Basins by Sequence Stratigraphy and Its Implications for Paleoclimate and Paleoenvironment Evolution

Hou, Haihai; Shao, Longyi; Tang, Yue; Li, Yanan; Liang, Guodong; Xin, Yilin; Zhang, Jiaqiang

doi:10.1007/s12583-020-1069-4

Cited by 20 publications

(11 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It should be noted that the Miquan strike-slip fault near Urumqi has a significant impact on tectonic condition and coal correlation of the eastern research area (Fig. 1b; Hou et al, 2020). The main coal-bearing strata in the southern Junggar Basin consist of the Lower Jurassic Badaowan Formation and the Middle Jurassic Xishanyao Formation.…”

Section: Geological Settingmentioning

confidence: 99%

“…The southern Junggar Basin, recognized as having the most promising coalbed methane (CBM) exploitation in the northwestern China's coal-bearing region (Fig. 1a), has attracted the attention of coal geologists because of its abundant coal resources and palaeo-climatic information (Li et al, 2014;Hou et al, 2020). The southern Junggar Basin belongs to the faulted and folded areas of the North Tian Mountains, which is geographically divided by several rivers flowing from south to north (Fig.…”

Section: Geological Settingmentioning

confidence: 99%

“…4). This could be an indicator of transported distance; for example, fluid or wind transport could be inferred for charcoals in sandstone, whereas in situ-deposition may be inferred for plant leaves in mudstone (Hou et al, 2020). Gymnosperm fragments were identified and superimposed on the cores (Fig.…”

Section: Macro-charcoal and Plant Leaf Characteristicsmentioning

confidence: 99%

“…From the bottom to the top, the coal thickness of Xishanyao Formation generally decreases consisting of three layers: a thick seam, a thin coal seam, and a coal streak layer (Hou et al, 2020). The lithology of the Xishanyao Formation includes sandy conglomerate, coarse -grained sandstone, medium-grained sandstone, finegrained sandstone, siltstone, muddy sandstone, mudstone, sandy mudstone, carbonaceous mudstone, and coal (Li et al, 2018).…”

Section: Geological Settingmentioning

confidence: 99%

See 3 more Smart Citations

Repeated Wildfires in the Middle Jurassic Xishanyao Formation (Aalenian and Bajocian Ages) in Northwestern China

Hou

Shao

Liang

et al. 2022

Acta Geologica Sinica (Eng)

Self Cite

View full text Add to dashboard Cite

The coal-bearing strata in the southern Junggar Basin in northwestern China have recently attracted the attention of coal geologists. Its abundance of coal resources is of great interest as there is a potential of unlocking details about the palaeoclimatic information. Coal deposits have the capacity to record wildfire events, even those with inefficient combustions. To characterize wildfire events and palaeoclimatic history of the Middle Jurassic Xishanyao Formation (Aalenian and Bajocian ages), 22 coal samples from borehole cores and coal mines in the southern Junggar Basin were collected and their macerals were analyzed. The results indicated that fusinite and semi-fusinite were the dominant components of inertinite with proportions of 35.27% and 54.67%, respectively. The presence of inertinite is an indicator that wildfires occurred at the time of peat land development, and the widespread occurrence suggests large scale wildfires during the Middle Jurassic. This study proposes a new parameter for the evaluation of wildfire features by combining burning frequency and burning temperature. The comprehensive evaluation index (CEI) was influenced by the lacustrine basin level and ancient plant types from a sequence framework. During the Middle Jurassic, most wildfires were surface fires with low level and ground fire with high level. High oxygen levels were estimated in the lower, middle, and upper members of the Xishanyao Formation with corresponding to 26.78%, 24.55%, and 23.55%, respectively. The high oxygen levels would be the primary cause of repeated wildfires in the Middle Jurassic. These results are helpful for understanding palaeoclimatic changes in the Middle Jurassic.

show abstract

Section: Geological Settingmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

Section: Macro-charcoal and Plant Leaf Characteristicsmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

See 2 more Smart Citations

Repeated Wildfires in the Middle Jurassic Xishanyao Formation (Aalenian and Bajocian Ages) in Northwestern China

Hou

Shao

Liang

et al. 2022

Acta Geologica Sinica (Eng)

Self Cite

View full text Add to dashboard Cite

show abstract

“…Shales in coal-bearing strata are often interbedded with coal seams and tight sandstone, and often have geological characteristics such as small thickness, poor continuity, large variation in gas content, and low porosity (Gao et al, 2021). Hence, the pore structure characteristics of these shales have a significant impact on gas enrichment and development conditions (Hou et al, 2023a(Hou et al, , 2023bXu et al, 2019). The pore structure of shale is more complex than that of traditional sandstone and carbonate reservoirs (Ibad and Padmanabhan, 2022;Liang et al, 2019;Xiao et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Pore structure characteristics of shale in coal-bearing strata: In the case of the Shanxi formation of lower Permian in Huainan coalfield in China

Yang

Xue

et al. 2023

Energy Exploration & Exploitation

View full text Add to dashboard Cite

Reservoir pore characteristics are an important part of shale gas reservoir capacity evaluation. Compared with Marine shale, the study of coal measure shale is relatively backward in China. In order to deeply analyze the reservoir properties of coal measure shale gas and give priority to favorable reservoirs, the pore structure characteristics of shale in coal measures from the Shanxi Formation of Lower Permian in Huainan Coalfield of China were investigated in this study. The pore size distribution, specific surface area (SSA), and pore volume (PV) were obtained. The BET surface area and PVs are inconsistent with the variability in total organic content (TOC) and composition of the samples. There are unobvious negative correlations between PV, SSA, and TOC for the samples in this study. However, the contribution of clay minerals to PV and SSA seems to be positive, especially for the mixed-layer minerals of illite and smectite.

show abstract

Evolution of depositional environment of the Pliensbachian Stage (Lower Jurassic) coal‐bearing series in the Qaidam Basin, NW China

et al. 2023

Self Cite

View full text Add to dashboard Cite

The Qaidam Basin is one of the major coal‐bearing basins in northeastern China with the coal seams mainly preserved in the Lower–Middle Jurassic. The Middle Jurassic sedimentary environment, sequence stratigraphy, paleoclimate, and coal accumulation in the Qaidam Basin have been extensively studied, while the sedimentary characteristics and depositional evolution of the Lower Jurassic coal‐bearing series are less well known. We systematically analysed the facies association, depositional system, basin evolution, and coal accumulation of the Early Jurassic Pliensbachian‐aged coal‐bearing series from the Dameigou section in the northern Qaidam Basin. Five lithological types have been identified, ranging from conglomerates, sandstones, siltstones, and mudstones to combustible organic rocks, which were further subdivided into 12 lithofacies. These lithofacies were grouped into four facies associations, representing the braided fluvial, meandering fluvial, lacustrine, and meandering fluvial‐lacustrine transition deposits, respectively. The Pliensbachian Stage mainly developed as a fluvial‐lacustrine depositional system and an evolution history from braided fluvial to meandering fluvial, then to lacustrine, and finally back to meandering fluvial was reconstructed. We suggest that climate change is the major controlling factor for depositional evolution during the Pliensbachian. The transition of the depositional environment from fluvial to lacustrine in the study area can be attributed to the rapid climatic change induced by volcanism at this interval.

show abstract

Coal Seam Correlation in Terrestrial Basins by Sequence Stratigraphy and Its Implications for Paleoclimate and Paleoenvironment Evolution

Cited by 20 publications

References 44 publications

Repeated Wildfires in the Middle Jurassic Xishanyao Formation (Aalenian and Bajocian Ages) in Northwestern China

Repeated Wildfires in the Middle Jurassic Xishanyao Formation (Aalenian and Bajocian Ages) in Northwestern China

Pore structure characteristics of shale in coal-bearing strata: In the case of the Shanxi formation of lower Permian in Huainan coalfield in China

Evolution of depositional environment of the Pliensbachian Stage (Lower Jurassic) coal‐bearing series in the Qaidam Basin, NW China

Contact Info

Product

Resources

About