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Author Topic: Quartz sericite clay bed  (Read 2333 times)

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Offline digginitmines

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Quartz sericite clay bed
« on: January 12, 2018, 05:19:19 PM »
Looking to chat about the formation of clay beds from decomposed quartz sericite material . My claim area has tertiary channels resting on tan a clay layer. My question is about how these massive clay beds formed in a valley yet they donít contain any streambed gravels within.

Offline geezir

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Re: Quartz sericite clay bed
« Reply #1 on: January 12, 2018, 09:44:20 PM »
Are they stratified? They could be ancient Lake deposits.
BC as both ancient and glacial Lacustrine deposits and in most cases they are devoid of coarse particles such as  sand or gravels. The finer the particles the more difficult it can be to find stratification.
There are fine clay lacustrine deposits in the Cariboo vallies as high as 1500 m.

Offline PhilipGold

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Re: Quartz sericite clay bed
« Reply #2 on: January 13, 2018, 08:26:58 AM »
Give it a few Ma of weathering without glaciation everything turn to pudding.  The question is more how the rocks and the hosting deposit formed. You already have the answer, keep going,  Winter time, internet digging!

Offline Shield-Geo

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Re: Quartz sericite clay bed
« Reply #3 on: February 24, 2018, 09:51:47 AM »
The valley may have been a lake at one point in its history. Could have been an ice dam or glacial lake. Is there coarse sediment under the clay layer? Clay is pretty impermeable, could keep some gold rich sediment underneath of it really easily. If you can take some soil samples of that stuff.