Results 171 to 180 of about 344 (181)

Net primary productivity and its control of the Middle Jurassic peatlands: An example from the southern Junggar coalfield

Science China Earth Sciences, 2018
The Jurassic is an important period of global coal formation, including the development of several large coalfields in central Asia and northern China. Individual seams within these peatlands represent sustained periods of terrestrial carbon accumulation and a key environmental indicator attributed to this record is the rate of carbon accumulation ...
Yanan Li, Longyi Shao, Zhiming Yan, Haihai Hou, Yue Tang, David J. Large   +5 more
openaire   +1 more source

Sequence stratigraphy and paleogeography of the Middle Jurassic coal measures in the Yuqia coalfield, northern Qaidam Basin, northwestern China

AAPG Bulletin, 2014
ABSTRACT Detailed stratigraphic and paleogeographic analyses of data from 72 boreholes for the Middle Jurassic intermontane fluvial-lacustrine coal-bearing sequences were conducted in the Yuqia coalfield of the northern Qaidam Basin, northwestern China. Three third-order sequences lasting in total ca.
Meng Li, Longyi Shao, Jing Lu, Baruch Spiro, Huaijun Wen, Yonghong Li   +5 more
openaire   +2 more sources

High quality of Jurassic Coals in the Southern and Eastern Junggar Coalfields, Xinjiang, NW China: Geochemical and mineralogical characteristics

International Journal of Coal Geology, 2012
Abstract The Junggar coal basin, with enormous coal reserves, is one of the largest coal basins in Xinjiang Province, Northwest China. According to the exploration data, there is one to dozens of workable coal seams developed in the Xishanyao Formation of Middle Jurassic across the whole basin, with the maximum accumulated coal thickness of over 100 ...
Jing Li, Xinguo Zhuang, Xavier Querol, Oriol Font, Natalia Moreno, Jibin Zhou, Guoming Lei   +6 more
openaire   +1 more source

An assessment of water yield properties for weathered bedrock zone in Northern Shaanxi Jurassic coalfield: a case study in Jinjitan coal mine, Western China

Arabian Journal of Geosciences, 2019
Jurassic weathered bedrock is widely distributed in the Jurassic coalfield of Northern Shaanxi Province. Its fracture network is connected with each other well, which provides a good space foundation for groundwater storage. It makes bedrock weathered zone become one of the important aquifers that endanger coal mine safe production.
Zhi Yang, Wenping Li, Jianghui He, Yu Liu   +3 more
openaire   +1 more source

Elemental Geochemical Distribution of the Jurassic Yan'an Formation in the Ningdong Coalfield and its Controlling Effect on Coal Reservoir Properties

Natural Resources Research, 2023
Jincheng Ye, Yafei Zhang, Wei He, Rui Tao, Shu Tao, Shida Chen, Yi Cui, Qi Wang   +7 more
openaire   +1 more source

Thermokinetic analysis of low-rank bituminous coal during low-temperature oxidation: A case study of the Jurassic coal in Shendong coalfield, Ordos Basin, China

Energy, 2022
Zhenbao Li, Fengshuang Wang, Yongqiao Wei, Rui Liang, Wei Gao, Xiaofeng Zhang   +5 more
openaire   +1 more source

Predicting the Height of Water-Conducting Fissure Zones in a Jurassic Coalfield Based on AdaBoost-WOA-BPNN

Mine Water and the Environment
Enke Hou, Meng Bi, Tianwen Long, Xiaoshen Xie, Pengfei Hou, Qianlong Li   +5 more
openaire   +1 more source

Sedimentary Facies and Coal-Accumulation of the Early-Middle Jurassic in Toksun Coalfield Northwestern China

Energy Exploration and Exploitation, 2013
Cunliang Zhao
exaly  

Late Triassic‐Early Jurassic abnormal thermal event constrained by zircon fission track dating and vitrinite reflectance in Xishan coalfield, Qinshui Basin, central North China

Geological Journal, 2018
Beilei Sun
exaly  

Sequence Strata Division and Source Bed of Coal Bed Gas Accumulation Law of Early~Middle Jurassic at Xinjiang KuBai Coalfield

Advanced Materials Research, 2014
exaly