tatanan
nalika lahar dirilis saka gunung, iku diwiwiti saka cooling cepet banget kang freezes mekanisme saka crystallization. asil punika kaca vulkanik karo susunan Gamelan seragam.
  
foidolites punika, hard rock nggoleki-grained kang jinis metasomatite, ateges ngrubah basalt. iku formulir karo utawa tanpa crystallization, salah siji ngisor permukaan minangka rocks intrusive utawa ing lumahing minangka rocks extrusive.
  
komposisi
  
  
isi Mineral
ora kasedhiya
  
amphibole, biotite, Feldspar, olivine, plagioclase, pyroxene
  
senyawa isi
aluminium oxide, cao, wesi (iii) oxide, feo, kalium oxide, MgO, keda, sodium oxide, fosfor pentoxide, silikon dioksida, titanium dioxide
  
aluminium oxide, cao, wesi (iii) oxide, feo
  
transformasi
  
  
metamorphism
Yes
  
Yes
  
jinis metamorphism
metamorphism kakubur, metamorphism cataclastic, kontak metamorphism
  
metamorphism kakubur, metamorphism cataclastic, hidrotermal metamorphism, impact metamorphism
  
cuaca
Yes
  
No
  
jinis udan
udan biologi, udan kimia, udan mechanical
  
ora ditrapake
  
erosi
Yes
  
No
  
jinis erosi
erosi kimia, erosi gisik, erosi Glacier
  
ora ditrapake