11. The jointing of the roofing timbers were intricately detailed. 12. These boulders appeared to be jointing or fracturing. 13. Compared with other examples of columnar jointing , the Postpile has more hexagonal columns. 14. Other tubes have concentric and radial jointing features. 15. They require special techniques for jointing and terminating, see High-voltage cable. 16. The Strand Fiord Formation contains columnar jointing units that are usually to in diameter. 17. Featherboards are also useful for edge jointing , and making moulding on router tables. 18. Columnar jointing is not limited to rhyolite formations. 19. These minute fissures and larger gaps are primarily caused by jointing within the rocks. 20. Jointing is a geological process in which rocks break down into block shaped pieces.
