Results 91 to 100 of about 1,278 (244)

Breakthrough and significance of technology on internal multiple recognition and suppression: A case study of Ordovician Dengying Formation in Central Sichuan Basin, SW China

Petroleum Exploration and Development, 2018
Aimed at the serious mismatch between the synthetic seismogram and the real data of the Sinian Dengying Formation and the Lower Cambrian Qiongzhusi Formation in the GS1 well area, Sichuan Basin, four aspects of internal multiples identification and ...
Lideng GAN, Fusen XIAO, Xiaofeng DAI, Hao YANG, Youping XU, Qi RAN, Chao WEI, Zhan'an XIE, Xuan ZHANG, Weidong LIU, Ming ZHANG, Jianyong SONG, Yandong LI   +12 more
doaj   +1 more source

U-Pb Sensitive High-Resolution Ion Microprobe Ages from the Doushantuo Formation in South China: Constraints on Late Neoproterozoic Glaciations [PDF]

, 2005
Two distinctive volcanic ash beds were found in the terminal Proterozoic Doushantuo Formation in south China. The lower ash bed, ∼2.5 m above the cap carbonate at the base of the Doushantuo, yields a U-Pb zircon age of 621 ± 7 Ma, providing the closest ...
Christie-Blick, Nicholas, Jiang, Ganqing, Kennedy, Martin J., Song, Biao, Zhang, Junming, Zhang, Shihong   +5 more
core   +2 more sources

Sphalerite Records Cd Isotopic Signatures of the Parent Rocks in Hydrothermal Systems: A Case Study From the Nayongzhi Zn–Pb Deposit, Southwest China

Geochemistry, Geophysics, Geosystems, Volume 25, Issue 5, May 2024.
Abstract Metal stable isotopes (e.g., Zn, Cd, and Cu) have been used to track metal sources in different types of hydrothermal systems. However, metal isotopic variations in sulphides could be triggered by various factors such as mineral precipitation and fluid mixing.
Wenrui Song, Chuanwei Zhu, Hanjie Wen, Zhilong Huang, Chen Wei, Yuxu Zhang, Zhengbing Zhou, Zhen Yang, Xiaocui Chen, Béatrice Luais, Christophe Cloquet   +10 more
wiley   +1 more source

Morphological disparity and evolutionary patterns of Cambrian hyoliths

Papers in Palaeontology, Volume 10, Issue 2, March/April 2024.
Abstract Hyolitha represent one of the major constituents of the Cambrian Evolutionary Fauna, first appearing in the Terreneuvian and rapidly diversifying soon after. Recent work has both enriched the hyolith fossil record and expanded our understanding of their biology, but studies documenting the evolutionary trajectory of Cambrian hyoliths remain ...
Fan Liu, Timothy P. Topper, Luke C. Strotz, Yue Liang, Yazhou Hu, Christian B. Skovsted, Zhifei Zhang   +6 more
wiley   +1 more source

Provenance evolution of age‐calibrated strata reveals when and how South China Block collided with Gondwana [PDF]

, 2020
The South China Block (SCB) has been regarded by many as an integral part of Gondwana, but proposed timing and processes for its accretion to Gondwana vary and remain contentious, largely owing to the lack of reliable Pan‐African age paleomagnetic data ...
Li, Xian‐Hua, Li, Zheng‐Xiang, Lu, Kai, Yang, Chuan, Zhu, Maoyan   +4 more
core   +1 more source

Decline and fall of the Ediacarans: late‐Neoproterozoic extinctions and the rise of the modern biosphere

Biological Reviews, Volume 99, Issue 1, Page 110-130, February 2024.
ABSTRACT The end‐Neoproterozoic transition marked a gradual but permanent shift between distinct configurations of Earth's biosphere. This interval witnessed the demise of the enigmatic Ediacaran Biota, ushering in the structured trophic webs and disparate animal body plans of Phanerozoic ecosystems.
Giovanni Mussini, Frances S. Dunn
wiley   +1 more source

The Neoproterozoic Ediacaran Kaijiang-Xuanhan paleo-uplift in the Sichuan Basin, Western China

Frontiers in Earth Science
The structural characteristics and formation evolution of the Sinian Kaijiang-Xuanhan paleo-uplift play a foundational role in the formation and evolution of the Sichuan Basin.
Ran Guo, Ran Guo, Zeqi Li, Jianxue Wu, Shugen Liu, Wei Sun, Peng Wang, Bin Deng, Liwei You, Zhiyi Liu   +9 more
doaj   +1 more source

Of time and taphonomy: preservation in the Ediacaran [PDF]

, 2014
The late Neoproterozoic witnessed a revolution in the history of life: the transition from a microbial world to the one we know today. The enigmatic organisms of the Ediacaran hold the key to understanding the early evolution of metazoans and their ...
Kenchington, Charlotte G, Wilby, Philip R   +1 more
core   +2 more sources

Identification of fossil worm tubes from Phanerozoic hydrothermal vents and cold seeps [PDF]

, 2017
One of the main limitations to understanding the evolutionary history of hydrothermal vent and cold seep communities is the identification of tube fossils from ancient deposits.
Adrian G. Glover, Alexander D. Ball, Berkeley C., Buschmann B., Campbell K. A., Caullery M., Crispin T. S. Little, Gaill F., Goedert J. L., Hammer Ø.,, Hryniewicz K.,, Jonathan S. Watson, Julian D.,, Lamarck J. B., Magdalena N. Georgieva, Mark A. Sephton, Rafinesque C. S., Reuscher M.,, Shpanskaya A. Y.,, Southward E.,, Vinn O.,   +20 more
core   +2 more sources

Mechanisms of helium differential enrichment and helium‐nitrogen coupling: A case study from the Weiyuan and Anyue gas fields, Sichuan Basin, China

Geological Journal, Volume 59, Issue 1, Page 272-287, January 2024.
The uplift of the basement granite was crucial for the exsolution and enrichment of dissolved helium, and it was also the main reason for He–N2 coupling. The differential uplift that occurred in the Leshan–Longnvsi palaeo‐uplift during the Himalayan period further promoted the differential enrichment of He resources, thus also impacting the N2/He ratio
Dong Zhao, Xiaofeng Wang, Wenhui Liu, Xiaobin Li, Dongdong Zhang, Xiaofu Li, Jiayu Zhang   +6 more
wiley   +1 more source