jinis
gandheng tuff, tuff rhyolitic, basaltic tuff, trachyte tuff, tuff andesitic lan ignimbrite.
rocks pumice, rocks obsidian, rocks perlite, rocks porphyritic.
fitur
tansah ditemokake minangka pipo vulkanik liwat lemah ndhuwur Continental jero
ngandhut asam ing alam, kasedhiya ing persil saka werna