Comments by "Helmuth Schultes" (@helmuthschultes9243) on "Oskosh 8x8 u0026 UNIMOGS Take on Soft Sand At Fraser Island!" video.
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The Rocks crumbling are really not hard rock it is a compressed dried mud and sand and vegetation deposites of ancient lake bed just becoming compressed rock like material, now eathered back to surface as ocean, rain and wind erode ancient buried layers. Not quite real sandstone or mudstone , just highly compressed material that over millions of years might have become real stone. It is somewhat soft yet and crumbles under that high load.
The whole island is just accumulated sand, there is virtually no real rock on that island, just huge forested, vegetation cover hills, with a number of lakes, fully suspended on sand. The lakes bottoms form sealed surfaces based on old vegetation, and mud layers. That accumulation on old long gone lakes are what forms these seeming dark rock like layers. But have not had pressure and heat over long time spans to become solid rock, that takes millions of years and deeper underground forces.
These massive trucks really are doing harm on the sand island tracks and the few "rocky" outcrops not suited to these loads.
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