煤是当今世界上最重要的三大矿物燃料之一。作为重要的能源,在我们的现代生活中起着很重要的作用。陕北煤田的大规模开发,不仅使陕北老区、人民脱贫致富,对陕西经济振兴产生了重大的影响,而且对国家能源建设作出了积极贡献。它既保证国家经济建设对优质动力煤的需要,又为国家换取大量外汇。那么,陕北大煤田它是怎样形成的呢?我们知道,煤是古代植物遗体埋在地层下,并在地壳中经过一系列非常复杂的变化而形成的,是由有机物和无机物所组成的复杂混合物。陕北煤 Coal is one of the three most important fossil fuels in the world today. As an important energy source, it plays a very important role in our modern life. The large-scale development of coal fields in northern Shaanxi not only made the old areas and people in northern Shaanxi become prosperous and rich, exerted a significant influence on the economic revitalization of Shaanxi Province, but also made positive contributions to the national energy construction. It not only guarantees the country’s economic construction needs of high-quality thermal coal, but also exchanges a large amount of foreign exchange for the country. Well, how is it formed in the northern Shaanxi coalfield? We know that coal is formed by the burial of the ancient plant body beneath the earth and through a series of very complex changes in the earth’s crust, consisting of organic matter and inorganic matter Complex mixture. Northern Shaanxi coal