Age data of the deep sediment core in the midstream of the Heihe River

This data set contains a deep drilling paleomagnetic age data near the open sea in the middle reaches of Heihe River. The borehole is located at 99.432 E and 39.463 n with a depth of 550m. The samples of paleomagnetic age were taken at the interval of 10-50 cm. The paleomagnetic test was carried out in the Key Laboratory of Western Ministry of environmental education of Lanzhou University. The primary remanence of the samples was obtained by alternating demagnetization and thermal demagnetization, and the whole formation magnetic formation was obtained by using the primary remanence direction of each sample, and then the sedimentary age of the strata was obtained by comparing with the standard polarity column. The results show that the bottom boundary of the borehole is about 7 Ma and the top boundary is 0 ma.

本数据集收录了位于黑河中游开阔海域附近的深钻井古地磁年代数据。钻井位置精确于东经99.432度和北纬39.463度，钻井深度达到550米。古地磁年代样本的采集间隔为10至50厘米。古地磁测试在兰州大学西部环境教育部重点实验室进行。样品的原剩磁通过交替退磁和热退磁获得，整个地层的磁性结构则通过每个样品的原剩磁方向确定，进而通过对比标准极性柱获得地层沉积年代。研究结果表明，该钻井底部边界约为700万年前，顶部边界为0百万年前。