tatanan
Wangun rock pumice nalika magma cools supaya cepet sing atom ing nyawiji sing ora bisa kanggo ngatur piyambak menyang struktur kristal.
ignimbrites sing kawangun saka dicampur banget lingkungan diurutake saka awu vulkanik utawa tuff lan pumice lapilli, umum karo pecahan lithic kasebar.
komposisi
isi Mineral
oksida aluminium, kalsit, karbonat, oksida wesi, silika
apatite, biotite, kalsit, chlorite, Feldspar, hematite, hornblade, ilmenite, magnetite, olivine, pyroxene, quartz
senyawa isi
al, aluminium oxide, cao, karbon dioksida, MgO, silikon dioksida
ca, NaCl
transformasi
metamorphism
✔
✘
✔
✘
jinis metamorphism
metamorphism kakubur, impact metamorphism
metamorphism kakubur, kontak metamorphism, hidrotermal metamorphism, impact metamorphism, metamorphism regional
cuaca
✔
✘
✔
✘
jinis udan
udan biologi, udan kimia, udan mechanical
udan biologi, udan kimia
erosi
✔
✘
✔
✘
jinis erosi
erosi kimia, erosi gisik, erosi Glacier, erosi segara, banyu erosi, angin erosi
erosi kimia, erosi gisik