Early Cretaceous magmatism and ore mineralization in Northeast China: examples from Taolaituo Mo and Aobaotu Pb–Zn deposits

2015 ◽  
Vol 57 (2) ◽  
pp. 229-256 ◽  
Author(s):  
Zhenhua Zhou ◽  
Jingwen Mao ◽  
Jun Liu ◽  
Hegen Ouyang ◽  
Hewei Che ◽  
...  
Keyword(s):  
Early Cretaceous ◽  
Northeast China ◽  
Ore Mineralization ◽  
Cretaceous Magmatism

scholarly journals Male spike strobiles withGnetumaffinity from the Early Cretaceous in western Liaoning, Northeast China

2009 ◽  
Vol 47 (2) ◽  
pp. 93-102 ◽  
Author(s):  
Shuang-Xing GUO ◽  
Jin-Geng SHA ◽  
Li-Zeng BIAN ◽  
Yin-Long QIU
Keyword(s):  
Early Cretaceous ◽  
Northeast China ◽  
Western Liaoning

scholarly journals Micropaleontology and palaeoclimate during the early Cretaceous in the Lishu depression, Songliao basin, Northeast China

2017 ◽  
Vol 8 (1) ◽  
pp. 93-106 ◽  
Author(s):  
Wei Yan ◽  
Tailiang Fan ◽  
Hongyu Wang ◽  
Chen Zhu ◽  
Zhiqian Gao ◽  
...  
Keyword(s):  
Early Cretaceous ◽  
Northeast China ◽  
Songliao Basin

A syn-collisional model for Early Cretaceous magmatism in the northern and central Lhasa subterranes

2017 ◽  
Vol 41 ◽  
pp. 93-109 ◽  
Author(s):  
Sheng-Sheng Chen ◽  
Ren-Deng Shi ◽  
Xiao-Han Gong ◽  
De-Liang Liu ◽  
Qi-Shuai Huang ◽  
...  
Keyword(s):  
Early Cretaceous ◽  
Cretaceous Magmatism

Dates and rates in ancient lakes: 40Ar–39Ar evidence for an Early Cretaceous age for the Jehol Group, northeast China

1995 ◽  
Vol 32 (9) ◽  
pp. 1426-1431 ◽  
Author(s):  
Patrick E. Smith ◽  
Norman M. Evensen ◽  
Derek York ◽  
Mee-Mann Chang ◽  
Fan Jin ◽  
...  
Keyword(s):  
Early Cretaceous ◽  
Northeast China ◽  
Late Jurassic ◽  
Lacustrine Sediments ◽  
Yixian Formation ◽  
Liaoning Province ◽  
Absolute Calibration ◽  
Small Fault ◽  
Absolute Age ◽  
Good Agreement

The correlation of freshwater sediments in small, fault-bound basins in Liaoning Province, northeast China, known as the Jehol (or Rehe) Group, has been a subject of debate for many years, with biochronological estimates ranging from Late Jurassic to the Cretaceous periods. We have applied the laser 40Ar–39Ar technique to volcanic intercalations and lacustrine sediments from the Yixian Formation at the base of the Jehol Group. Minerals and whole-rock chips from the upper parts of the Yixian Formation give concordant ages with a mean of 121.1 ± 0.2 Ma (1σ). Ages for samples near the base of the Yixian Formation give 121.4 ± 0.6 and 122.9 ± 0.3 Ma, and appear to be synchronous or only slightly older than the top of the formation. Integrated ages of 122 Ma for glaucony from the lacustrine sediments lying stratigraphically between the upper and lower parts of the Yixian are in very good agreement with the absolute age framework provided by the volcanic units. Such disseminated facies of this clay show promise for directly dating lacustrine sediments. All of the above 40Ar–39Ar dates provide an absolute calibration of the Yixian Formation, and show that the whole formation was deposited entirely within Early Cretaceous time over an interval of no more than 2–3 Ma.

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