This data belongs to U-Pb geochronology data of Mesozoic strata in Huanghua depression, Bohai Bay Basin, inner North China Craton, including Pb, 232Th, 238U contents, 207Pb / 206Pb, 207Pb / 235U, 206Pb / 238U ratios and errors, 207Pb / 235U, 206Pb / 238U ages and errors, etc. Zircon U-Pb dating was carried out by using the second upgraded excimer laser ablation system (geolas HD, 193nm wavelength) and laser ablation inductively coupled plasma mass spectrometry (ICP-MS) with quadrupole (Agilent 7900). The laser frequency is 5Hz and the beam size is 30 nm μ m。 The international standard sample 91500 was used as the external calibration standard for age calculation. Nist610 was used to calculate the concentrations of uranium, thorium and lead, and gj-1 was used to monitor the isotopic ratios The U-Pb isotopic ratios were calculated by cal10.8, and the common Pb was corrected by compb # 3-18. The age of particles younger than 1000mA is based on their 206Pb / 208U ratio. The analysis with > 10% or < – 5% inconsistencies was excluded. The acceptable inconsistencies and accuracies of the analysis were listed in the table below. The harmonic age and the mean age were calculated by isoplot software. The uncertainty of the mean age was 2 σ, The individual analysis report is 1 σ。 The results of geochronology data are published in Science China earth science, and the data quality is reliable. It plays a very important role in the establishment of Mesozoic stratigraphic framework in Bohai Bay Basin covered by Cenozoic. It lays a good foundation for Mesozoic tectonic evolution and basin analysis in this area, and has a good application prospect.

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The chronological data is stored in Excel, and the name of the file is "UPB geochronology data in HUNGHUA depression in Bohai Bay base. Xlsx". Usage: the data is in xlsx file format, which can be opened directly by Excel.

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Cite as:

Zhu, J. (2021). U-Pb data set of LateMesozoic strata in Huanghua depression, Bohai Bay basin（190-75Ma）. A Big Earth Data Platform for Three Poles, DOI: 10.11888/Geo.tpdc.271541. CSTR: 18406.11.Geo.tpdc.271541. (Download the reference： RIS | Bibtex )

Related Literatures:

1. Zhu, J., Feng, Y., Meng, Q., Wu, F., Li, H., Liu, H., Zhang, F., Wang, T., Wu, G., & Zou, C. (2019). Late Mesozoic tectonostratigraphic division and correlation of the Bohai Bay basin: Implications for the Yanshanian Orogeny. Science China Earth Sciences, 62, 1783–1804.( View Details | Bibtex)

Using this data, the data citation is required to be referenced and the related literatures are suggested to be cited.

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Deep processes and resource effects of major geological events during the Yan Mountains period (No:2016YFC0600400)

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