This dataset includes contents, stable carbon and oxygen isotopes of carbonates in the Aksu section, Tajik Basin. Stable carbon and oxygen isotopes from carbonates are important climatic proxies in paleoenvironmental reconstruction. The samples are sampled from fine-grained sediments (siltstone, clay) in the late Eocene-early Oligocene continental strata of the Aksu section in the central Tajik Basin. The sediment samples were grounded and sieved through a 100 mesh screen, and then directly analyzed using an isotope ratio mass spectrometer (MAT-252) with an automated carbonate preparation device (Kiel Ⅱ). C, O isotope ratios are converted to Vienna Pee Dee Belemnite (V-PDB) standards. Typical analytical errors for C, O isotope are within ±0.1‰ (±0.06‰ and ±0.08‰ for carbon isotope and oxygen isotope, respectively). The carbonate content was measured by neutralization titration with an accuracy of 0.5%. The ages of the data were obtained by linear interpolation based on magnetostratigraphy. Based on the carbonate concentrations and the stable carbon and oxygen isotopes of the Tajik Basin, the paleoenvironmental evolution history during the late Eocene and early Oligocene can be well reconstructed, being useful for discussing the environmental effects of the uplift of the Indo-Eurasia collision and the global climatic changes.

File naming and required software

Data naming method: Carbonate content and C, O isotope data of the Aksu section in the Tajik Basin.xlsx
Usage: use Excel software to open the data and use Excel / grapher / origin and other software to map

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Cite as:

Sun, J. (2022). Carbonate content and C, O isotope data of the Aksu section in the Tajik Basin. A Big Earth Data Platform for Three Poles, DOI: 10.11888/SolidEar.tpdc.272329. CSTR: 18406.11.SolidEar.tpdc.272329. (Download the reference： RIS | Bibtex )

Related Literatures:

1. Sun, J.M., Liu, W.G., Guo, Z.T., Qi, L., & Zhang, Z.L. (2022). Enhanced aridification across the Eocene/Oligocene transition evidenced by geochemical record in the Tajik Basin, Central Asia. Global and Planetary Change, 211, 103789. https://doi.org/10.1016/j.gloplacha.2022.103789.( View Details | Bibtex)

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

Support Program

Pan-Third Pole Environment Study for a Green Silk Road-A CAS Strategic Priority A Program (No:XDA20000000)

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