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对徐海—石头岗花岗闪长岩体围岩中黑云母及有机质变质程度的研究发现:距岩体580m范围内的接触带岩石皆具有角岩化现象。黑云母含量受原岩成分影响,其鳞片粒径与岩体距离密切有关。围岩中镜质组反射率,(R_(mas))值与岩体距离之间有十分明显的规律。
The study on the metamorphic degree of biotite and organic matter in the surrounding rock of Xuhai-Shigogang granodiorite shows that the contact rock within 580m from the rock mass has the phenomenon of angular lithification. The biotite content is affected by the original rock composition, and the size of the scale is closely related to the rock mass distance. There is a very obvious regularity between the vitrinite reflectance (R_ (mas)) and the rock mass distance in the surrounding rock.