Iron speciation related to color of Jurassic sedimentary rocks in Turpan Basin, northwest China

An adult sand snake specimen was collected during a herpetofaunal survey conducted in the Turpan Basin in northwest China. Phylogenetic analyses revealed that this specimen, along with other snake sloughs and skins collected from different localities in the Turpan Basin formed a clade that is sister to Psammophis lineolatus. This taxon exhibited substantial divergence from its congeners (P. lineolatus and P. condanarus) with uncorrelated p-distances ranging from 11.9 ± 0.9% to 15.8 ± 1.6% for the ND4 gene and from 10.2 ± 0.8% to 13.8 ± 1.1% for the Cytb gene. Given the genetic differences along with morphological differences, we describe the specimen from the Turpan Basin as Psammophis turpanensis sp. nov. We provide detailed morphological descriptions, and compare this specimen with five Asian sand snakes and the Afro-Asian Sand Snake, P. schokari. In addition, we provide brief comments on the biogeography of Psammophis in China.

Download Full-text

Petrography, geochemistry, and geochronology of Lower Jurassic sedimentary rocks from the Northern Tianshan (West Bogda area), Northwest China: Implications for provenance and tectonic evolution

Geological Journal ◽

10.1002/gj.3263 ◽

2018 ◽

Vol 54 (3) ◽

pp. 1688-1714 ◽

Cited By ~ 8

Author(s):

Hongjie Ji ◽

Huifei Tao ◽

Qi Wang ◽

Dongxu Ma ◽

Lewei Hao

Keyword(s):

Tectonic Evolution ◽

Sedimentary Rocks ◽

Northwest China ◽

Lower Jurassic ◽

Northern Tianshan

Download Full-text

Trace and rare earth elements geochemistry of sedimentary rocks in the Ediacaran-Cambrian transition from the Tarim Basin, Northwest China: Constraints for redox environments

Precambrian Research ◽

10.1016/j.precamres.2020.105942 ◽

2021 ◽

Vol 352 ◽

pp. 105942

Author(s):

Wang Liyuan ◽

Guo Qingjun ◽

Zhao Changqiu ◽

Wei Rongfei ◽

Deng Yinan ◽

...

Keyword(s):

Rare Earth ◽

Rare Earth Elements ◽

Tarim Basin ◽

Sedimentary Rocks ◽

Northwest China

Download Full-text

Turpanopitys taoshuyuanense gen. et sp. nov., a novel woody branch discovered in Early Triassic deposits of the Turpan Basin, Northwest China, and its palaeoecological and palaeoclimate implications

Palaeogeography Palaeoclimatology Palaeoecology ◽

10.1016/j.palaeo.2016.12.026 ◽

2017 ◽

Vol 468 ◽

pp. 314-326 ◽

Cited By ~ 11

Author(s):

Xiao Shi ◽

Jianxin Yu ◽

Jean Broutin ◽

Denise Pons ◽

Camille Rossignol ◽

...

Keyword(s):

Northwest China ◽

Early Triassic ◽

Turpan Basin

Download Full-text

Geochemical evidence for mudstone as the possible major oil source rock in the Jurassic Turpan Basin, Northwest China

Organic Geochemistry ◽

10.1016/s0146-6380(01)00076-6 ◽

2001 ◽

Vol 32 (9) ◽

pp. 1103-1125 ◽

Cited By ~ 33

Author(s):

Jianping Chen ◽

Yong Qin ◽

Bryan G. Huff ◽

Darui Wang ◽

Dexin Han ◽

...

Keyword(s):

Source Rock ◽

Northwest China ◽

Geochemical Evidence ◽

Turpan Basin ◽

Oil Source

Download Full-text

Neoproterozoic active continental margin in the northwestern Tarim Craton: Clues from Neoproterozoic (meta)sedimentary rocks in the Wushi area, northwest China

Precambrian Research ◽

10.1016/j.precamres.2017.06.002 ◽

2017 ◽

Vol 298 ◽

pp. 88-106 ◽

Cited By ~ 14

Author(s):

Yuanzhi Lu ◽

Wenbin Zhu ◽

Rongfeng Ge ◽

Bihai Zheng ◽

Jingwen He ◽

...

Keyword(s):

Continental Margin ◽

Active Continental Margin ◽

Sedimentary Rocks ◽

Northwest China ◽

Tarim Craton

Download Full-text

Geochemical Evidence for Coal and Carbonaceous Mudstone as the Possible Major Oil Source Rock in the Jurassic Turpan Basin, Northwest China

Acta Geologica Sinica - English Edition ◽

10.1111/j.1755-6724.2012.00739.x ◽

2012 ◽

Vol 86 (5) ◽

pp. 1171-1181 ◽

Cited By ~ 3

Author(s):

MENG Jianghui ◽

ZHANG Min ◽

ZHAO Hongjing ◽

LIU Luofu ◽

WANG Zhiyong ◽

...

Keyword(s):

Source Rock ◽

Northwest China ◽

Geochemical Evidence ◽

Turpan Basin ◽

Oil Source

Download Full-text

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

Microorganisms ◽

10.3390/microorganisms9030560 ◽

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.

Download Full-text