Most silica oncoids formed in shallow (&lt; 1 cm) flowing water that probably had a temperature of ~ 15-20 C and pH of 3-6.
(Most silica oncoids; formed; L:in shallow (&lt; 1 cm) (water; probably had; a temperature of ~ 15-20 C and pH of 3-6)
Most silica oncoids water
formed probably had
L:in shallow (&lt 1 cm
a temperature of ~ 15-20 C and pH of 3-6