A potentially New Early Ediacaran Glaciation

扫码查看

原文链接

NETL
NSTL
万方数据

外文摘要：Multiple episodes of Neoproterozoic glaciation,namely the Beiyixi,Altungol,Tereeken and Hankalchough glaciations,are recorded in the Kuruktag area of northeastern Tarim Craton,NW China.The Tereeken glaciation was previously correlated with the global Marinoan glaciation based on sedimentary and chemostratigraphic features recorded in the cap dolostone immediately overlying the glaciogenic diamictite,as well as less precise radiometric age constraints.In this study,we obtained chemical-abrasion isotope dilution isotope ratio mass spectrometry(CA-ID-IRMS)U-Pb age of 624.03±0.10 Ma from zircons extracted from a tuff lava interbeded within the diamictite of the Tereeken Forma-tion,which suggests an Early Ediacaran age for the Tereeken glaciation.Such newly discovered Early Ediacaran glaciation in the Tarim region could have induced the negative δ13Ccarb excursions of 625-605 Ma by providing oxygen and other oxidants to invoke remineralization of a deep ocean dissolved organic carbon(DOC)reservoir.

外文关键词：

KuruktagTereeken glaciationzirconCA-ID-IRMSU-Pb ageEdiacaran

作者：

Zhongwu Lan、Magdalena H.Huyskens、Rong Ren、Qing-Zhu Yin

展开 >

作者单位：

State Key Laboratory of Lithospheric and Environmental Coevolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China

State Key Laboratory of Palaeobiology and Stratigraphy,Nanjing Institute of Geology and Palaeontology,Chinese Academy of Sciences,Nanjing 210008,China

Department of Earth and Planetary Sciences,University of California,Davis CA,USA

Research Institute of Petroleum Exploration and Development,PetroChina,Beijing 100083,China

展开 >

出版年：

2024

DOI：

10.1007/s12583-024-1979-7

地球科学学刊(英文版)

中国地质大学

地球科学学刊(英文版)

CSTPCD

影响因子：0.724

ISSN：1674-487X

年,卷(期)：2024.35(6)