Development And Construction Of Magnetic Stratigraphic Database For The Qinghai-Tibet Plateau

The Qinghai-Tibet Plateau has experienced a complicated and long process of tectonic,climatic,and biological evolution.One of the most important means to reconstruct this process is to establish a high-precision geological chronology.In the past 40 years,a large numbers of magnetic stratigraphy studies have been carried out on the Mesozoic-Cenozoic sedimentary sequences,accumulating a wealth of magnetic stratigraphic data that has played an important role in promoting the study of the Qinghai-Tibet Plateau.However,due to varying measurement accuracies of instruments in different periods,differing polarity event acquisition and interpretation reference standards,and the scattering of these data across various documents such as papers and research reports,there has been a lack of effective integration.This study aims to build a database to collect and organize existing magnetic stratigraphy data,providing technical support for the integration and quality assessment of magnetic stratigraphy data of the Qinghai-Tibet Plateau,and ultimately obtaining unified standard magnetic stratigraphic age results and paleomagnetic data to facilitate high-precision studies on tectonic,climatic,and biological evolution as well as geomagnetic field evolution.In this paper,a large number of magnetic stratigraphy data from the Qinghai-Tibet Plateau were collected from journal articles,and a magnetic stratigraphy database for the Qinghai-Tibet Plateau was established using MySQL,PHP,and HTML5 technologies.The main results and findings of the paper are as follows:(1)By collecting and organizing data from 63 sections and 5,500 samples,a dataset of magnetic stratigraphy for the Qinghai-Tibet Plateau was established,providing important data support for the construction of the database.(2)Graphic data digitization software was developed,enabling the collection of data from graphical expressions in published literature.(3)Based on the MySQL database architecture,data redundancy was reduced and efficient data processing workflows were designed through the optimization of data structures,achieving efficient data storage and querying for the Qinghai-Tibet Plateau magnetic stratigraphy database.(4)Using Web GIS technology,the efficient integration of the database and the geographic information system were realized,enabling the visualization,access,and analysis of magnetic stratigraphy data of the Qinghai-Tibet Plateau.