松辽盆地白垩系OAE2大洋缺氧事件陆地响应及机制数据

01-松辽盆地泉头组碳酸盐碳氧同位素地球化学数据是对泉头组三、四段的23件古土壤钙质结核开展碳、氧稳定同位素分析，得到了新的白垩纪中期古大气CO2浓度和陆相古温度记录，数据量15KB；02--松辽盆地泉头组和登娄库组粘土矿物数据是对松科 3 井泉头组和登娄库组岩心开展粘土矿物学分析，发现松辽盆地陆地风化作用在OAE2事件期间增强，数据量27KB；03--松辽盆地泉头组和登娄库组古降水数据是对松科3井登娄库组和泉头组岩心进行古土壤沉积学特征的描述，利用DTC方法重建白垩纪中期MAP年均降雨量，数据量31KB;04-松辽盆地晚白垩世古气候记录数据是综合了晚白垩世多种古气候指标，四方台组-明水组沉积相与沉积环境、古土壤类型、元素地球化学记录、古土壤自生碳酸盐稳定同位素地球化学记录具有显著波动特征，数据量190KB；05-松辽盆地晚白垩世总有机质含量数据发现了17万年斜率振幅调制周期控制中高纬度有机碳埋藏，揭示了白垩纪末期至古近纪初期松辽盆地陆地气候波动，数据量12KB；06-松辽盆地晚白垩世古降水数据,记录了晚白垩世降水发生波动。

01 - Geochemical data of carbonate carbon and oxygen isotopes from the Quantou Formation in the Songliao Basin: This dataset provides new Middle Cretaceous paleo-atmospheric CO₂ concentration and continental paleotemperature records derived from carbon and oxygen stable isotope analyses of 23 paleosol calcareous concretions collected from the 3rd and 4th members of the Quantou Formation, with a data size of 15 KB; 02 - Clay mineral data from the Quantou Formation and Denlouku Formation in the Songliao Basin: This dataset was obtained through clay mineralogical analysis of cores from the Quantou Formation and Denlouku Formation of Well Songke-3, and it reveals enhanced terrestrial weathering in the Songliao Basin during Oceanic Anoxic Event 2 (OAE2), with a data size of 27 KB; 03 - Paleoprecipitation data from the Quantou Formation and Denlouku Formation in the Songliao Basin: This dataset documents the sedimentological characteristics of paleosols from cores of the Denlouku Formation and Quantou Formation of Well Songke-3, and reconstructs Middle Cretaceous mean annual precipitation (MAP) using the DTC method, with a data size of 31 KB; 04 - Late Cretaceous paleoclimate record data from the Songliao Basin: This dataset integrates multiple Late Cretaceous paleoclimate proxies, and it shows significant fluctuations in the sedimentary facies and sedimentary environment of the Sifangtai Formation and Mingshui Formation, paleosol types, elemental geochemical records, and stable isotope geochemical records of authigenic carbonates in paleosols, with a data size of 190 KB; 05 - Total organic matter content data from the Late Cretaceous in the Songliao Basin: This dataset demonstrates that a 170,000-year slope amplitude modulation cycle controls organic carbon burial in mid-high latitudes, and it reveals terrestrial climate fluctuations in the Songliao Basin from the end of the Cretaceous to the early Paleogene, with a data size of 12 KB; 06 - Late Cretaceous paleoprecipitation data from the Songliao Basin: This dataset records fluctuations in Late Cretaceous precipitation.

搜集汇总

背景与挑战

背景概述

该数据集包含松辽盆地白垩系OAE2大洋缺氧事件的陆地响应及机制数据，涵盖碳酸盐碳氧同位素、粘土矿物、古降水、古气候记录等多方面研究，数据量总计412.25KB，文件数7个。这些数据为研究白垩纪中期的古环境与古气候提供了重要依据。