intrusive igneous rock

基本解釋

Geology A body of intrusive igneous rock of which less than 100 square kilometers (40 square miles) is exposed.
巖株：一種侵入性火成巖體，少于100平方公里（40平方英里），暴露在地表外。
odict.net
A coarse-grained, plutonic or intrusive igneous rock of felsic composition having large crystals of quartz, feldspar and mica.
一種粗粒的，深成的或侵入的長英質成分的火成巖，含石英、長石和云母的粗大晶體。
This paper mainly deals with the petrology and geochemistry of Tertiary igneous rocks and basic intrusive rocks, and summarizes the rock types of igneous rocks and intrusive rocks.
對濟陽凹陷的第三系火山巖、基性侵入巖進行了巖石學和地球化學研究，分別總結了火山巖、基性侵入巖巖石類型及其特征。