scholarly journals Genetic Analysis of Geothermal Resources and Geothermal Geological Characteristics in Datong Basin, Northern China

Energies ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1792
Author(s):  
Wenlong Zhou ◽  
Xiangyun Hu ◽  
Shilong Yan ◽  
Hongdang Guo ◽  
Wei Chen ◽  
...  
Keyword(s):  
Volcanic Activity ◽  
North China ◽  
Hydrothermal Systems ◽  
Tibet Plateau ◽  
Tectonic Activity ◽  
Geothermal Resources ◽  
Northeastern Part ◽  
Geological Characteristics ◽  
Datong Basin ◽  
The North

Datong Basin is a Cenozoic fault basin located in the central part of the North China Block with strong tectonic activity. The unique geological environment of Datong Basin is believed to have good conditions for the formation of geothermal resources. Based on the research of the classification, genesis and geothermal geological characteristics of geothermal resources, the geological conditions, seismic activity, volcanic activity, geophysical exploration results, terrestrial heat flow and hot springs in Datong Basin are analyzed. The possibility of the occurrence of geothermal resources in Datong Basin is determined, and the genesis and occurrence mechanisms of geothermal resources in Datong Basin are judged. The results show that Datong Basin satisfies the geological geothermal conditions of the formation of geothermal resources and is of great research value. The formation of geothermal resources in the Datong Basin is affected by the uplift of the Qinghai–Tibet Plateau and the destruction of the North China Craton. The geothermal resources in Datong Basin are formed by the combination of modern volcanic activity and strong inner-plate tectonic activities. The geothermal system is a combination of convective hydrothermal systems and partial melt systems. At the same time, it is concluded that the key research areas for the occurrence of geothermal resources are mainly in the northeastern part of the basin. It is recommended to carry out detailed and comprehensive exploration of the northeastern part of Datong Basin.

scholarly journals Angular Unconformity of the Late Quaternary Strata in the Hetao Basin, North of the Ordos Block (West China): Timing and Its Tectonic Implications

2021 ◽  
Vol 9 ◽  
Author(s):  
Luanxi Bai ◽  
Xiwei Xu ◽  
Hao Luo ◽  
Kang Li ◽  
Xibin Tan ◽  
...  
Keyword(s):  
Late Quaternary ◽  
Lacustrine Sediments ◽  
Tibet Plateau ◽  
Tectonic Activity ◽  
West China ◽  
The North ◽  
Ordos Block ◽  
The Pacific ◽  
Long Time ◽  
Lacustrine Facies

Following the uplift of the Tibet Plateau and the continuous subduction of the Pacific Plate, graben faulting began to appear around the Ordos Block in the Cenozoic. The Hetao Basin is a Cenozoic rift basin between the Ordos Block and the Yinshan Mountains, and Late Quaternary sedimentary strata, which have lacustrine facies, are widely distributed inside this basin. However, the evolution of the Hetao Basin and its related fault systems has been debated for a long time due to the lack of tectonic evidence. In this study, four sections named Haolaigou, Bianqianghao, Huhesala, and Hazigai are selected along the north margin of the Hetao Basin. With the lithology and structural analysis of the Upper Pleistocene series in these sections, two new angular unconformities are found within the 10 m thick sedimentary sequence of the lacustrine sediments. Based on the dating results, we speculate that these two upper and lower angular unconformities are formed between 33 ka BP and 40 ka BP, and 60 ka BP and 80 ka BP, respectively. The angular unconformities also provide tectonic constraints for the latest and ongoing tectonic activity in the Quaternary. This tectonic movement begins at around 80 ka BP and causes two different unconformities of the lower strata with varying degrees of deformation (tilt) but also leads to the final death of the ancient lake.

Taxonomic consideration of eight Chinese bisexual Artemia populations, based on the morphology of frontal knob and gonopod and the result of cross-breeding tests

Zootaxa ◽  
2008 ◽  
Vol 1919 (1) ◽  
pp. 25-44 ◽  
Author(s):  
BO ZHENG ◽  
SHI-CHUN SUN
Keyword(s):  
North China ◽  
Type Locality ◽  
Tibet Plateau ◽  
Taxonomic Assignment ◽  
Cross Breeding ◽  
Chinese Populations ◽  
The North ◽  
Xizang Plateau ◽  
Qinghai Tibet Plateau ◽  
Taxonomic Consideration

The taxonomic assignment of the Artemia from Qinghai-Xizang Plateau has been argued. In the present paper, the morphology of frontal knobs and gonopods of five Artemia populations from Qinghai-Xizang Plateau (Lagkor Co, Cam Co, Dagdong Co and Jibu Caka, Tibet; Jingyu Hu, Xinjiang) and three populations from North China (Badain Jaran and Yimeng, Inner Mongolia; Xiechi Lake, Shanxi) is described and compared with four non-Chinese species, the results of cross-breeding tests between the eight Chinese populations are documented and the taxonomic assignment of these Artemia populations is discussed. Morphological observations show that gonopods of the Chinese populations are significantly longer than those of the other species; distal gonopods of the Chinese populations possess spines that can be classified into three groups (posterior spines, exolateral spines and orthostichous spines). In the four non-Chinese species, however, orthostichous spines are absent (thus providing a morphological separation between A. urmiana and A. tibetiana) and the number of spines is much smaller than those of the Chinese populations. Discriminant analysis on numerical characters showed that three North China populations were divergent from four Tibetan populations, with Jingyu Hu population intermediate. Compared with the North China populations, the Tibetan populations possess a longer gonopod (longer gonopod, longer distal gonopod and longer finger-like tip), larger basal gonopod spine, larger percent of frontal knob spines that emerge by 2 spines from the same region and smaller percent of frontal knob spines that emerge by 4 and 5 spines from the same region. The Artemia from Jingyu Hu is morphometrically close to the Tibetan populations by possessing a larger basal gonopod spine, larger percent of frontal knob spines emerging by 2 spines from the same region and smaller percent of frontal knob spines emerging by 4 and 5 spines from the same region, but different from the latter by having a shorter gonopod (shorter gonopod, shorter distal gonopod and shorter finger-like tip), fewer frontal knob spines, more distal gonopod spines and more posterior spines. The results of cross-breeding tests showed that isolating barrier did not exist among the three North China populations or among the five Qinghai-Xizang Plateau populations, while they might exist between A. urmiana and the populations of Xiechi Lake (type locality of A. sinica) and Lagkor Co (type locality of A. tibetiana) and between the Qinghai-Xizang Plateau populations and A. sinica. The present results thus support the validity of A. tibetiana. Among the eight Chinese populations, the five populations from Qinghai-Tibet Plateau belong in A. tibetiana, whereas three populations from North China belong in A. sinica.

scholarly journals Geological Characteristics and Working Suggestions of Shuiquan Ben- tonite Mine in Chaoyang County

2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Tongyu Wang
Keyword(s):  
Volcanic Rock ◽  
North China ◽  
Mining Area ◽  
Liaoning Province ◽  
North China Block ◽  
Northern Margin ◽  
Geological Characteristics ◽  
The North ◽  
Ore Bodies ◽  
Superimposed Basin

The shuiquan bentonite mining area in chaoyang county, liaoning province is located in the northern margin of the north China block - yanshan middle neoproterozoic rifting belt - western liaoning Mesozoic upper superimposed basin belt - chaoyang Mesozoic superimposed basin-ling system nejinling si-yangshan volcanic rock basin. The bentonite ore bodies occur in the rhytitic breccia tuff of the lanqi formation and are stratified deposits. Based on the study of the known ore bodies, this paper summarizes the prospecting marks, summarizes the prospecting direction, and lays a foundation for the next exploration.

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