http://earthwise.bgs.ac.uk/index.php?action=history&feed=atom&title=File%3AP914144.jpg 2026-05-08T03:26:51Z Revision history for this page on the wiki MediaWiki 1.42.3 http://earthwise.bgs.ac.uk/index.php?title=File:P914144.jpg&diff=58202&oldid=prev 2022-12-17T13:29:24Z

<p>Uploaded a work by British Geological Survey from British Geological Survey with UploadWizard</p> <p><b>New page</b></p><div>=={{int:filedesc}}==<br /> {{Information<br /> |description={{en|1=Figure 25 Schematic representation of possible events leading to the formation of the Central Intrusion, Rum Central Complex (after Emeleus et al., 1996b, fig. 21). Periodic replenishments of picritic magma (1) rejuvenated the magma chamber, causing disruption, sliding and slumping of earlier layered sequences (2), and intruded laterally into earlier cumulates (3). Magma fountaining into the magma chamber (4a) subsequently flows off the roof and down the sides as crystal-laden, gravity-driven currents (4b), dislodging crystal mushes as they move.The gravity currents spread across the floor, reworking cumulate debris and depositing this material and primary crystals on the floor (4c). Movement on faults was accompanied by magma injection, thermal erosion of earlier rocks and their fragmentation to form breccia zones (5). Slides of large, coherent masses of cumulates across partly liquefied cumulates led to spectacular slump mélanges (6) (Plate 32). Solidified or semi-solidified cumulates are shaded. From: Emeleus, C H, and Bell, B R. 2005. British regional geology: The Palaeogene volcanic districts of Scotland. Fourth edition. Keyworth, Nottingham: British Geological Survey.}}<br /> |date=2022-12-17<br /> |source=British Geological Survey<br /> |author=British Geological Survey<br /> |permission=<br /> |other versions=<br /> }}<br /> <br /> =={{int:license-header}}==<br /> {{subst:Custom license marker added by UW}}<br /> {{BGS}}</div>

Scotfot