本文简要讨论了花岗岩中常用压力计的应用限制条件和误差.对于钙碱性花岗岩推荐使用角闪石全铝压力计；对低压矿化岩体建议使用黑云母全铝压力计即可；奥长环斑花岗岩中可应用富铁斜方辉石-铁橄榄石-石英组合压力计；存在两种长石和石英平衡共结的花岗岩可利用Q-Ab-Or-H2O相图获得它们的共结压力.花岗岩矿物中流体包裹体的内压可以通过热力学状态方程或者拉曼光谱获得；特殊的岩浆矿物如绿帘石有时候也可以指示岩浆结晶时所处的最低压力.此外,通过THERMOCALC计算的视剖面是约束共生矿物组合及熔体形成温压条件的最后方法.%This paper briefly and critically discusses several common geobarometers applied to granitic systems, especially the specific rock types, and their limitation and error analysis. The Al-in-hornblende barometer can be applied to calc-alkaline granites and is suitable for low-pressure mineralized granitic pluton. The Fe-rich orthopyroxene-fayalite-quartz assemblage barometer can be used to calculate the crystallization pressure condition of rapakivi granites, and the crystallization pressure of coexisting alkali feldspar, plagioclaae and quartz can be obtained via projecting onto the Q-Ab-Or-H2O phase diagram for granites. The hydrostatic pressure of fluid inclusion in granites can be acquired by thermodynamic state equations or raman spectroscopy. Some indicative minerals like magmatic epidote sometimes can constrain the lower pressure limit. Moreover, the pseudosection calculated by THERMOCALC eventually can define the pressure scope for a specific coexisting mineral assemblage and specific pressure and temperature.
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