scholarly journals Paleoclimate, paleosalinity and redox conditions control on palygorskite claystones formation: An example from the Yangtaiwatan Basin, Northwest China

Clay Minerals ◽  
2022 ◽  
pp. 1-30
Author(s):  
Lihui Liu ◽  
Shuai Zhang ◽  
Qinfu Liu ◽  
Linsong Liu ◽  
Youjun Deng
Keyword(s):  
Northwest China ◽  
Redox Conditions

scholarly journals Mineralosphere Microbiome Leading to Changed Geochemical Properties of Sedimentary Rocks from Aiqigou Mud Volcano, Northwest China

2021 ◽  
Vol 9 (3) ◽  
pp. 560
Author(s):  
Ke Ma ◽  
Anzhou Ma ◽  
Guodong Zheng ◽  
Ge Ren ◽  
Fei Xie ◽  
...  
Keyword(s):  
High Throughput Sequencing ◽  
Sedimentary Environment ◽  
Sedimentary Rocks ◽  
Junggar Basin ◽  
Northwest China ◽  
Redox Conditions ◽  
Total Carbon ◽  
Mud Volcano ◽  
Rrna Gene ◽  
Geochemical Properties

The properties of rocks can be greatly affected by seepage hydrocarbons in petroleum-related mud volcanoes. Among them, the color of sedimentary rocks can reflect the changes of sedimentary environment and weathering history. However, little is known about the microbial communities and their biogeochemical significance in these environments. In this study, contrasting rock samples were collected from the Aiqigou mud volcano on the southern margin of the Junggar Basin in Northwest China as guided by rock colors indicative of redox conditions. The physicochemical properties and mineral composition are similar under the same redox conditions. For example, the content of chlorite, muscovite, quartz, and total carbon were higher, and the total iron was lower under reduced conditions compared with oxidized environments. High-throughput sequencing of 16S rRNA gene amplicons revealed that different functional microorganisms may exist under different redox conditions; microbes in oxidized conditions have higher diversity. Statistical analysis and incubation experiments indicated that the microbial community structure is closely related to the content of iron which may be an important factor for color stratification of continental sedimentary rocks in the Aiqigou mud volcano. The interactions between organics and iron-bearing minerals mediated by microorganisms have also been hypothesized.

Moss coverage improves the microclimates of subalpine forests: implications of Qinghai spruce recruitment in Qilian Mountains, northwest China

2019 ◽  
Vol 51 (5) ◽  
Author(s):  
Qingtao Wang ◽  
Chuanyan Zhao ◽  
Yunpu Zheng ◽  
Muhammad Waseem Ashiq ◽  
Xiaoping Wang ◽  
...  
Keyword(s):  
Northwest China ◽  
Qilian Mountains ◽  
Subalpine Forests ◽  
Qinghai Spruce

Analyses on the Vegetation Index Variation and Its Formation Causes in the Oases in Northwest China in Recent 22 Years

2010 ◽  
Vol 27 (1) ◽  
pp. 75-82 ◽  
Author(s):  
Ni GUO ◽  
Xiao-ping WANG ◽  
Di-hua CAI ◽  
Ji-zu QING
Keyword(s):  
Vegetation Index ◽  
Northwest China ◽  
Index Variation

Environmental Degradation in the Minqin Oasis in Northwest China during Recent 50 Years

2004 ◽  
Vol 31 (4) ◽  
pp. 357-365 ◽  
Author(s):  
Kecun Zhang ◽  
Jianjun Qu ◽  
Qinhe Liu
Keyword(s):  
Environmental Degradation ◽  
Northwest China ◽  
Minqin Oasis

PETROGRAPHIC, XRD, AND CLUMPED ISOTOPE STUDY OF A CRETACEOUS DOLOMITIC LAKE IN NORTHWEST CHINA

2017 ◽  
Author(s):  
Marina B. Suarez ◽  
◽  
G. Ludvigson ◽  
Luis A. Gonzalez ◽  
Hailu You
Keyword(s):  
Northwest China ◽  
Isotope Study ◽  
Clumped Isotope
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