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Geochemical Characteristics and Paleoclimate Significance of the Upper Cretaceous Continental Red Beds in the Danxia Basin, Northern Guangdong Province
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GuoHui CHEN1, Chao LI1, HongWei LI2, KaiJie ZHA1
Acta Sedimentologica Sinica | 2026, 44(3) : 921 - 944
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Acta Sedimentologica Sinica | 2026, 44(3): 921-944
Geochemical Characteristics and Paleoclimate Significance of the Upper Cretaceous Continental Red Beds in the Danxia Basin, Northern Guangdong Province
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GuoHui CHEN1, Chao LI1, HongWei LI2, KaiJie ZHA1
Affiliations
  • 1.School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China
  • 2.Guangdong Geological Survey Institute, Guangzhou 510080, China
Published: 2026-06-10 doi: 10.14027/j.issn.1000-0550.2024.118
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Objective The climate signals of the Danxia strata， a representative of Cretaceous continental red beds， offers key insights into red-bed sedimentation and Cretaceous geological events. Methods This study examined fine-grained clastic rocks in the Upper Cretaceous Danxia Basin， specifically the Second member and Fourth member of the Changba Formation and the Jinshiyan member of the Danxia Formation. Sedimentology， elemental and isotopic geochemistry were used to investigate the sedimentary environment and paleoclimate significance during key Upper Cretaceous stages （Cenomanian， Turonian， Campanian）. Results It was found that the fine-grained clastic rocks of these formations were deposited during a warm and humid climate phase， with suboxic to oxic water conditions. The water bodies were predominantly brackish， while localized high-salinity brackish and low-oxygen environments （e.g.， the Fourth member of the Changba Formation） were associated with lake shrinkage and climatic aridification. Water depth variations exhibit trends of initial contraction followed by expansion， gradual contraction， then initial expansion followed by contraction， which align with the changes in sedimentary facies and environment. Conclusions The Upper Cretaceous terrestrial sedimentary records of the Danxia Basin illustrate the climatic evolution of intermontane basins， shaped by global climate patterns of the Upper Cretaceous， as well as by significant influences from local topographic and geomorphic features.

Upper Cretaceous  /  Danxia Basin  /  continental red beds  /  geochemistry  /  paleoclimate
GuoHui CHEN, Chao LI, HongWei LI, KaiJie ZHA. Geochemical Characteristics and Paleoclimate Significance of the Upper Cretaceous Continental Red Beds in the Danxia Basin, Northern Guangdong Province[J]. Acta Sedimentologica Sinica, 2026 , 44 (3) : 921 -944 . DOI: 10.14027/j.issn.1000-0550.2024.118
Funding
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  • Guangdong Special Fund for National Park Construction(2021GJGY026)
  • Guangdong Special Fund for Ecological Forestry Construction(2021GJGY001)
  • Fundamental Research Funds for the Central Universities(B240201109)
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Year 2026 volume 44 Issue 3
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Article Info
doi: 10.14027/j.issn.1000-0550.2024.118
  • Receive Date：2024-09-18
  • Online Date：2026-09-17
  • Published：2026-06-10
Article Data
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History
  • Received：2024-09-18
  • Revised：2024-11-08
  • Accepted：2025-01-06
Funding
Guangdong Special Fund for National Park Construction(2021GJGY026)
Guangdong Special Fund for Ecological Forestry Construction(2021GJGY001)
Fundamental Research Funds for the Central Universities(B240201109)
Affiliations
    1.School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China
    2.Guangdong Geological Survey Institute, Guangzhou 510080, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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