中国柴达木盆地花土沟剖面古地磁和古气候数据集

1）数据内容：
古地磁数据能够建立花土沟剖面古地磁年代框架，粒度、磁学指标以及地球化学指标能够恢复地质历史时期气候变化。
2）数据来源及加工方法
数据来源为实验数据。
古地磁数据：采用小型汽油钻钻取2x2x2厘米的圆柱形样品，在磁屏蔽室内用低温超导磁力仪进行测量。
磁学数据：将野外采集样品用研钵磨成细颗粒装入2x2x2无磁塑料盒内，用卡帕桥磁化率仪、脉冲磁力仪和旋转磁力仪进行测试。
粒度数据：使用Malvern Mastersizer 2000粒度分析仪分析分解的样品。在分析前，按照兰州大学的标准程序，用热过氧化氢去除有机物，然后用盐酸去除碳酸盐。
地球化学数据：取少量样品用玛瑙研钵进行捣碎并研磨成粉末状，后用200目的筛子进行过筛，以保证样品达到测试标准。待完成所有样品研磨过筛后，将样品轻放在载玻片的凹槽中并进行刮平至与载玻片周围齐平，用PANalytical X’Pert Pro MPD 多晶 X 射线衍射仪作为测试仪器。
3）数据质量
样品采集、实验处理均按照严格的标准进行，所获数据质量可靠。
4) 数据应用成果及前景
应用这套数据发表SCI论文2篇，其中1篇为Ni文章。

1) Data Content:
Paleomagnetic data can establish the paleomagnetic chronological framework of the Huatugou section, while grain size, magnetic proxies and geochemical indicators can reconstruct paleoclimatic changes throughout geological history.
2) Data Sources and Processing Methods:
All data originate from laboratory experiments.
Paleomagnetic data: Cylindrical samples with dimensions of 2×2×2 cm were collected using a small gasoline-powered drill, and measured in a magnetically shielded room with a low-temperature superconducting magnetometer.
Magnetic data: Field-collected samples were ground into fine particles with a mortar, then loaded into 2×2×2 cm non-magnetic plastic boxes, and tested using a Kappabridge magnetic susceptibility meter, pulse magnetometer and rotating magnetometer.
Grain size data: Samples were analyzed with a Malvern Mastersizer 2000 grain size analyzer. Prior to analysis, organic matter was removed via hot hydrogen peroxide and carbonates were removed via hydrochloric acid following the standard operating procedure of Lanzhou University.
Geochemical data: A small quantity of each sample was crushed and ground into powder using an agate mortar, then sieved through a 200-mesh sieve to meet test standards. After all samples were ground and sieved, they were gently placed into the grooves of glass slides and scraped flat to align with the slide surfaces. A PANalytical X’Pert Pro MPD polycrystalline X-ray diffractometer was employed as the testing instrument.
3) Data Quality:
Both sample collection and experimental processing were conducted in strict compliance with standardized protocols, ensuring the reliability of the obtained dataset.
4) Data Application Achievements and Prospects:
Two SCI-indexed papers have been published based on this dataset, one of which has Ni as an author.

搜集汇总

背景与挑战

背景概述

该数据集包含中国柴达木盆地花土沟剖面的古地磁和古气候数据，时间范围为2.1-3.9Ma（上新世），时间分辨率低于1000年，空间分辨率为1m-10m。数据内容包括古地磁、粒度、磁学指标和地球化学指标，用于建立古地磁年代框架和恢复地质历史时期气候变化，数据质量可靠，已支持发表多篇SCI论文。数据集以Excel格式存储，可通过开放获取方式使用，需遵循相关引用规范。