Sedimentology of mud - Canadian Society of Petroleum Geologists
Sedimentology of mud - Canadian Society of Petroleum Geologists
Sedimentology of mud - Canadian Society of Petroleum Geologists
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Mud dispersal processes in these successions<br />
• The <strong>mud</strong>dy component in these successions was being dispersed<br />
by advective processes that were transporting sediment both as<br />
fluid <strong>mud</strong> in suspension and in bedload as aggregate grains.<br />
• Storm driven flows and WESGFs likely underpin <strong>mud</strong> dispersal.<br />
• Schieber (2010) has shown that flow rates at the sediment water<br />
interface were at least 20cm/s (sufficient to transport fine sand)<br />
• The common occurrence <strong>of</strong> these fabrics in the studied source<br />
rocks indicates that they were neither exclusively deposited in low<br />
energy nor deep settings - conditions at the sediment water<br />
interface were dynamic.<br />
• These laminae are not classic varves<br />
So does low energy suspension settling occur?<br />
• Yes! But not quite in the way we expect!<br />
• Texturally the <strong>mud</strong> is packaged into organo-minerallic aggregates,<br />
that are interpreted to be “marine snow” - it is not delivered as<br />
“dispersed fine-grained continuous rain”.
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