Igneous sheet intrusions are segmented across several orders of magnitude. with segment tip geometry commonly considered indicative of the propagation mechanism (brittle or non-brittle). Proposed propagation mechanisms are inferred to represent host rock mechanical properties during initial magma emplacement; typically. these models do not account for segment sets that show a range of... https://www.bekindtopets.com/great-pick-Obsidian-ULU-w-Eagle-clearance/