中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Magnetostratigraphy of the Upper Cretaceous Nenjiang Formation in the Songliao Basin, northeast China: Implications for age constraints on terminating the Cretaceous Normal Superchron

文献类型:期刊论文

AuthorShen, Zhongshan3,4,5; Yu, Zhiqiang1,2; Ye, Hanqing3,4,5; Deng, Chenglong3,4,5; He, Huaiyu3,4,5
SourceCRETACEOUS RESEARCH
Issued Date2022-07-01
Volume135Pages:16
KeywordCretaceous Normal Superchron Songliao Basin Nenjiang Formation Magnetostratigraphy
ISSN0195-6671
DOI10.1016/j.cretres.2022.105213
English AbstractWe developed an integrated chronology for the non-marine Upper Cretaceous Nenjiang Formation based on high-resolution magnetostratigraphic results and previously published secondary ion mass spectrometry (SIMS) U-Pb zircon analyses of the eastern borehole of the Cretaceous Continental Scientific Drilling (CCSD-SK-II) borehole and two outcrop sections located in different structural provinces of the Songliao Basin, China. Detailed rock magnetic results demonstrated that pseudo-single-domain magnetite and single-domain greigite coexisted in the lacustrine black shales of the Nenjiang Formation, with the latter dominating remanence carriers. The reliable primary remanent magnetizations were isolated, which passed a class A positive reversal test and positive bootstrap reversal test, after correction for inclination shallowing, yielding a high-quality paleopole of 79.6 degrees N/208.4 degrees E, A(95) = 2.3 degrees. The borehole sequence and outcrop sections were stratigraphically correlated by combining lithostratigraphy, biostratigraphy, and SIMS U-Pb zircon geochronology. The correlation of the recognized magnetic polarity sequences to the geomagnetic polarity timescale suggests that the Nenjiang Formation from the CCSD-SK-II borehole sequence and the two outcrop sections span from very late chron C34n to very early chron C33r. Furthermore, the age of the Cretaceous Normal Superchron (CNS) termination can be constrained to 82.7 +/- 0.6 Ma based on magnetostratigraphy, radiometric dating, and the perfect/typical averaged sediment accumulation rate for Member 1 of the Nenjiang Formation of the borehole sequence. The estimated age obtained in this study accurately represents the age at CNS termination. (C) 2022 Elsevier Ltd. All rights reserved.
WOS KeywordMAGNETIC-PROPERTIES ; U-PB ; GEOCHRONOLOGICAL CONSTRAINTS ; GEOMAGNETIC POLARITY ; ACQUISITION CURVES ; NE CHINA ; COERCIVITY ; CYCLOSTRATIGRAPHY ; STRATIGRAPHY ; SUCCESSION
Funding ProjectNational Natural Science Foundation of China ; Strategic Priority Program (B) of the Chinese Academy of Sciences ; [41688103] ; [41802005] ; [41790452] ; [XDB18000000] ; [679]
WOS Research AreaGeology ; Paleontology
Language英语
WOS IDWOS:000793239700006
PublisherACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Program (B) of the Chinese Academy of Sciences ; Strategic Priority Program (B) of the Chinese Academy of Sciences ; Strategic Priority Program (B) of the Chinese Academy of Sciences ; Strategic Priority Program (B) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Program (B) of the Chinese Academy of Sciences ; Strategic Priority Program (B) of the Chinese Academy of Sciences ; Strategic Priority Program (B) of the Chinese Academy of Sciences ; Strategic Priority Program (B) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Program (B) of the Chinese Academy of Sciences ; Strategic Priority Program (B) of the Chinese Academy of Sciences ; Strategic Priority Program (B) of the Chinese Academy of Sciences ; Strategic Priority Program (B) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Program (B) of the Chinese Academy of Sciences ; Strategic Priority Program (B) of the Chinese Academy of Sciences ; Strategic Priority Program (B) of the Chinese Academy of Sciences ; Strategic Priority Program (B) of the Chinese Academy of Sciences