山岩漿起源於大洋板塊俯沖於大陸板塊之下時﹐洋殼及其上覆沉積物受高溫﹑高壓影響﹐轉變爲角閃岩﹑石英榴輝岩﹐再經部分熔融可形成安山岩漿﹔此岩漿上升進入地幔楔形區後可與地幔岩反應成輝石岩﹐再經部分熔融﹐能形成安山岩漿﹔大洋沉積物中水及水化的大洋殼中水﹐在俯沖到一定深度時脱出﹐上升至上覆的地幔楔形區﹐使地幔富水﹐富水地幔部分熔融能形成安山岩。

When Hill magma originated in oceanic plate subduction beneath the continental plate, the oceanic crust and overlying sediments affected by temperature , high pressure, into amphibolite , quartz eclogite, and then by partial melting to form andesite pulp; This magma after rising into the mantle wedge may react with mantle rocks into pyroxenite, and then by partial melting to form andesite pulp; ocean sediments of the ocean water and hydration shell in water, dive to a certain depth when prolapse, rising supremacy overlying mantle wedge, so that mantle rich in water, water-rich andesite can be formed by partial melting of the mantle.

成分相當於閃長岩，為酸性岩移化為基性岩之過渡岩，亦即介於流紋岩和玄武岩間的中性火成岩。常呈斑狀岩理，其所含的斑晶常為條紋狀的斜長石，以及一種或多種深色礦物，如角閃石、輝石、雲母等，而長石在其中仍居重要地位。安山岩的顏色甚多，通常都較流紋岩深色，但其中所含淺色礦物仍較深色者多。

Component corresponds to diorite, acidic rock movement into mafic rocks of the transition, ie between neutral igneous rhyolite and basalt between. Li Changcheng porphyritic rock, which contains phenocrysts often striated plagioclase, and one or more dark minerals,
Such as amphibole, pyroxene, mica, and feldspar in which continued to hold an important position. Andesite color very much, are usually more rhyolite dark, but light-colored ore contained therein
Who still dark matter much.

1.飲用、養殖、食品加工、等用水之處理。
2.家庭用於醫療、沐浴、人造溫泉。
3.土壤改良劑、飼料添加物，生花保鮮

4.建築材料.雕刻石材.

1 drinking, farming, food processing, such as process water for.
2 families for medical, bathing, artificial hot springs.
3 soil conditioner, animal feed additives, flower preservation
4 materials. Carving stone.

分佈於環太平洋活動大陸邊緣及島弧地區 , 台灣的大屯火山群、富貴角 ^[

Distributed in the circum-Pacific active continental margin and island arc regions, Datun Volcano Group of Taiwan, wealth corner