北美板块海相钾盐沉积特征、控制因素及其对中国找钾启示

North America Marine Potassium Sedimentary Characteristics,Controlling Factors and Its Revelation to Chinese Potassium

中文关键词:  北美板块  成钾规律  控制因素  找钾启示

英文关键词:North American plate  Potassium  Controlling factors  Revelation

中文摘要:

      北美钾盐探明资源量占全球已探明资源量的一半以上。本文介绍了北美板块的形成和北美每个成钾盆地成钾环境和盆地演化。从钾盐沉积的条件出发重点论述了钾盐沉积的板块漂移位置的关系,指出北美每个时期的钾盐沉积都与北美板块所处的位置相关；大型和超大型钾盐矿床的形成时期,北美板块都处在中低纬度地区,且因板块的位置而形成了钾盐沉积所需的气候条件。中国的海相盆地在一些时期也具有与北美相似的大地构造环境,如三叠纪的华南陆块、石炭纪的塔里木陆块,因此深刻了解北美大型海相钾盐矿床的成矿规律,对于寻找中国古代海相钾盐矿床有一定的启示意义。

英文摘要:

      North American proven potash resources accounted for more than half of the world's proven resource.This paper introduces the formation of the north American plate and the north America potassium basin‘s environment and evolution.Starting from the conditions of potash deposits is emphasized the relationship between tectonic plate position,points out that the North America in the period of potash deposits are related to the location of the north American plate,when the potash deposits of the north American plate are in low latitudes,and on the location of the plate and formed the potash deposit required climate conditions.China's Marine basin in some period also has similar to north American tectonic environment,such as Triassic of south China block,carboniferous tarim block,so understanding of north American large potash deposit metallogenic regularity,for potash deposit in ancient China has a certain significance.