A Preliminary Analysis and Aspects of the Geological Characteristics and Ore-forming Regularities of Deep Brine Potash Deposits in southeast Tarim depression of the Northern Margin of the Altyn Orogeny
The northern margin of the Altyn Orogeny in the foreland region hosts a series of potash deposits,constitut-ing a significant production base for potash salts in China.This paper focuses on the potash deposits on the southern mar-gin of the southeast Tarim Basin,systematically conducting geophysical,geochemical,and drilling investigations.The re-search indicates that the genesis of these potash deposits belongs to the continental salt lake type,primarily composed of potassium with associated sodium,magnesium salts,and bromine.Both liquid and solid ores are present,with the liquid ore consisting of subsurface brines and pressurized brine bodies,while the solid ore is composed of halite and sylvite.The deep brine potash deposits in this area primarily originate from the ancient salt dissolution and replenishment from the southern Altyn Mountains and the Tarim Basin.The abundant salt components in the rich source region,the semi-closed tectonic environment,and the windy arid climate in the Front RuoQiang Basin of the Altyn Orogeny are identified as the main conditions for the formation of these deposits.The basin's sedimentary center in the Front Altyn region may conceal deeply buried potassium-containing brine deposits,suggesting promising prospects for exploration in this region.
Northern Margin of the Altyn OrogenyPotash DepositsPotassium brine
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