Rock-magnetic, paleomagnetic and multimethod paleointensity data from the Pliocene Khaveti lava flow sequence in Georgia

The folder “1 Rock magnetic data Khaveti.zip” contains data in .txt format of IRM acquisition curves (extension .irm), hysteresis curves (extension .hys), backfield curves (extension .coe) and thermomagnetic magnetisation versus temperature curves (extension .rmp) obtained on Pliocene volcanic rocks from a lava flow sequence in the Lesser Caucasus in Georgia . Measurements were performed in the paleomagnetic laboratory of the University of Burgos (Spain). Columns are separated by tabs. Data can be visualised and analysed with the RockMagAnalyzer 1.0 software (Leonhardt, 2006).

The folder “2 Paleomagnetic data Khaveti.zip” contains paleomagnetic thermal and alternating field demagnetisation data obtained on Pliocene volcanic rocks from a lava flow sequence in the Lesser Caucasus in Georgia. Measurements were performed in the paleomagnetic laboratory of the University of Burgos (Spain). Data are in .txt format with the extension .rs3. Columns are separated by empty spaces. Data can be visualised and analysed with the Remasoft software (Chadima and Hrouda, 2006).

The folder “3 Paleointensity data Khaveti Thellier_Coe.zip” contains two folders with paleointensity determination data obtained with the Thellier-Coe method on Pliocene volcanic rocks from the Khaveti lava flow sequence in the Lesser Caucasus in Georgia. The two folders Thellier_Coe Khaveti_down and Thellier_Coe Khaveti_up contain paleointensity determination data obtained respectively in the 14 lower and 14 upper flows of the sequence. Experiments were carried out in the Paleomagnetics and Magnetic Materials Laboratory of the University of Hawai’i at Manoa. Data from each flow have been put in an own folder, and are in .txt format with the extension .tdt separated by tabs. Data can be visualised and analysed with the ThellierTool software (Leonhardt et al.,2004).

The folder “4 Paleointensity data Khaveti Multispecimen.zip” contains two folders with paleointensity determination data from Pliocene volcanic rocks from the Khaveti lava flow sequence in the Lesser Caucasus in Georgia. These data were obtained with the multispecimen method (Biggin and Poidras, 2006; Dekkers and Böhnel, 2006; Fabian and Leonhardt, 2010). The folder MS_Morelia contains determinations carried out at Laboratorio Interinstitucional de Magnetismo Natural, Instituto de Geofísica, Unidad Michoacán, UNAM, Mexico. The folder MS_Burgos contains determinations carried out at the paleomagnetic laboratory of the University of Burgos. All files are Excel files, and each one corresponds to a single sample subjected to multispecimen analysis. Data can be visualised and analysed with the VBA based software tool “MSP-Tool” (Monster et al.,2015) directly included in each one of the sample files.

REFERENCES

Biggin, A., Poidras, T., 2006. First-order symmetry of weak-field partial thermoremanence in multi-domain ferromagnetic grains. 1. Experimental evidence and physical implications. Earth Planet. Sci. Lett. 245, 438–453. doi:10.1016/j.epsl.2006.02.035

Chadima, M. and Hrouda, F., 2006. Remasoft 3.0 a user friendly paleomagnetic data browser and analyzer. Travaux Géophysiques, XXVII, 20-21.

Dekkers, M.J., Böhnel, H.N., 2006. Reliable absolute palaeointensities independent of magnetic domain state. Earth Planet. Sci. Lett. 248, 507–516. doi:10.1016/j.epsl.2006.05.040

Fabian, K., Leonhardt, R., 2010. Multiple-specimen absolute paleointensity determination: An optimal protocol including pTRM normalization, domain-state correction, and alteration test. Earth Planet. Sci. Lett. 297, 84–94. doi:10.1016/j.epsl.2010.06.006

Leonhardt, R., Heunemann, C. and Krása, D., 2004. Analyzing absolute paleointensity determinations: Acceptance criteria and the software ThellierTool4.0. Geochem. Geophys. Geosyst., Vol. 5, no. 12, doi.: 10.1029/2004GC000807.

Leonhardt, R., 2006. Analyzing rock magnetic measurements; The RockMagAnalyzer 1.0 software.Computers and Geosciences, 32, 1420-1431.

Monster, M.W.L., de Groot, L. V., Dekkers, M.J., 2015. MSP-Tool: A VBA-Based Software Tool for the Analysis of Multispecimen Paleointensity Data. Front. Earth Sci. 3, 1–9. https://doi.org/10.3389/feart.2015.00086

文件夹“1 Rock magnetic data Khaveti.zip”内包含格鲁吉亚小高加索地区Khaveti熔岩流序列上新世火山岩的实测数据，数据格式为.txt，包含四类曲线：等温剩磁获得曲线（后缀.irm）、磁滞回线（后缀.hys）、反向场退磁曲线（后缀.coe）以及热磁磁化-温度曲线（后缀.rmp）。所有测量工作均在西班牙布尔戈斯大学古地磁实验室完成，数据列以制表符分隔，可通过RockMagAnalyzer 1.0软件（Leonhardt, 2006）进行可视化与分析。

文件夹“2 Paleomagnetic data Khaveti.zip”内包含格鲁吉亚小高加索地区Khaveti熔岩流序列上新世火山岩的古地磁热退磁与交变场退磁数据。测量工作同样在西班牙布尔戈斯大学古地磁实验室完成，数据格式为后缀.rs3的.txt文件，列以空格分隔，可通过Remasoft软件（Chadima与Hrouda, 2006）进行可视化与分析。

文件夹“3 Paleointensity data Khaveti Thellier_Coe.zip”内含两个子文件夹，存储了针对格鲁吉亚小高加索地区Khaveti熔岩流序列上新世火山岩，采用泰利尔-科（Thellier-Coe）法测定的古强度数据。其中子文件夹“Thellier_Coe Khaveti_down”与“Thellier_Coe Khaveti_up”分别对应该序列下部14层与上部14层熔岩流的古强度测定数据。实验工作在美国夏威夷大学马诺阿分校古地磁与磁性材料实验室开展，每个熔岩流的数据均存放在独立文件夹中，数据格式为后缀.tdt的.txt文件，列以制表符分隔，可通过ThellierTool软件（Leonhardt等, 2004）进行可视化与分析。

文件夹“4 Paleointensity data Khaveti Multispecimen.zip”内含两个子文件夹，存储了针对格鲁吉亚小高加索地区Khaveti熔岩流序列上新世火山岩，采用多标本法（Biggin与Poidras, 2006; Dekkers与Böhnel, 2006; Fabian与Leonhardt, 2010）测定的古强度数据。子文件夹“MS_Morelia”的数据为墨西哥国立自治大学米却肯分校地球物理研究所跨机构天然磁学实验室的测定结果，子文件夹“MS_Burgos”的数据为西班牙布尔戈斯大学古地磁实验室的测定结果。所有文件均为Excel格式，每个文件对应一个接受多标本分析的单一样本。数据可通过内嵌于每个样本文件的、基于VBA的MSP-Tool软件（Monster等, 2015）进行可视化与分析。

参考文献
Biggin, A., Poidras, T., 2006. 多畴铁磁颗粒弱场部分热剩磁的一阶对称性：I. 实验证据与物理意义. 《地球与行星科学通讯》245, 438–453. doi:10.1016/j.epsl.2006.02.035
Chadima, M. 和 Hrouda, F., 2006. Remasoft 3.0：一款用户友好型古地磁数据浏览器与分析软件. 《地球物理著作集》, XXVII, 20-21.
Dekkers, M.J., Böhnel, H.N., 2006. 不依赖磁畴状态的可靠绝对古强度测定. 《地球与行星科学通讯》248, 507–516. doi:10.1016/j.epsl.2006.05.040
Fabian, K., Leonhardt, R., 2010. 多标本绝对古强度测定：包含部分热剩磁（pTRM）归一化、磁畴状态校正与蚀变测试的最优方案. 《地球与行星科学通讯》297, 84–94. doi:10.1016/j.epsl.2010.06.006
Leonhardt, R., Heunemann, C. 和 Krása, D., 2004. 绝对古强度测定分析：接受准则与ThellierTool4.0软件. 《地球化学、地球物理学、地球系统学》, 第5卷, 第12期, doi: 10.1029/2004GC000807.
Leonhardt, R., 2006. 岩石磁学测量分析：RockMagAnalyzer 1.0软件. 《计算机与地球科学》32, 1420-1431.
Monster, M.W.L., de Groot, L. V., Dekkers, M.J., 2015. MSP-Tool：一款用于多标本古强度数据分析的基于VBA的软件工具. 《前沿地球科学》3, 1–9. https://doi.org/10.3389/feart.2015.00086