tatanan
tatanan lamprophyre njupuk Panggonan jero ngisor permukaan bumi ing watara 150 kanggo 450 kilometer, lan sing njeblug kanthi cepet lan kejem.
  
Wangun coal saka klempakan saka lebu tetanduran ing lingkungan rawa kang wis kakubur sedimen kayata lendhut utawa wedhi lan banjur compacted kanggo mbentuk coal.
  
komposisi
  
  
isi Mineral
amphibole, karbonat, garnet, micas, olivine, phlogopite, pyroxene
  
analcime, apatite, barite, kalsit, chalcopyrite, chlorite, chromite, clausthalite, mineral lempung, grup crandallite, dolomite, Feldspar, galena, gypsum, marcasite, muscovite utawa illite, pyrite, quartz, siderite, sphalerite, zirkon
  
senyawa isi
aluminium oxide, NaCl, cao, wesi (iii) oxide, feo, kalium oxide, MgO, keda, sodium oxide, silikon dioksida, titanium dioxide
  
karbon, hidrogen, nitrogen, oksigen, belerang
  
transformasi
  
  
metamorphism
Yes
  
Yes
  
jinis metamorphism
metamorphism cataclastic, impact metamorphism
  
metamorphism kakubur, metamorphism cataclastic, metamorphism regional
  
cuaca
Yes
  
No
  
jinis udan
udan biologi
  
ora ditrapake
  
erosi
Yes
  
No
  
jinis erosi
erosi kimia, banyu erosi, angin erosi
  
ora ditrapake