Lost Password :: Posting Pictures :: Who's Online :: Stats :: Memberlist :: Top Posters :: Search
:: :: Trapping Pay Streak with Structural Barriers
Unsubscribe From Newsletter



Welcome, Register :: Log In Welcome to our newest member, Agent67.
Users active in this forum:
Users active in this thread:

people online in the last 1 minutes - 0 members, 0 anon and 0 guests. (Most ever was 29 at 13:36:32 Sat Aug 3 2002)

Pages: [ 1 ]

[ Notify of replies made to this post ][ Print ][ Send To Friend ] [ Watch ] [ < ] [ Add Reply ] [ > ]

kringle_mining
03:55:39 Wed
Oct 13 2010

Offline
2563 posts

Reply
Trapping Pay Streak with Structural Barriers

This quartz vein is 6 to eight feet wide with the apparent strikes 284 degrees and dipping 56S .



It is the structural feature that forms the finger heading up the side of the Mountain at the mouth of Demar Creek.
The black on the quartz veins is mostly lichen


The red line in the map below is the finger that the vein forms. See how the vein which disappears under a beaver pond blocks any concentrates from escaping into the river. Demar is walled off with a shallow hump of qtz vein.



[4 edits; Last edit by kringle_mining at 18:21:09 Sat Oct 16 2010]

  
kringle_mining
04:56:34 Wed
Oct 13 2010

Offline
2563 posts

Reply
Re: Trapping Pay streak with Structural Barriers

Here is the beaver dam. This shot was taken in 2006


Visible in the back ground beneath the three close birches is a portion of the vein.
[2 edits; Last edit by kringle_mining at 18:03:51 Sat Oct 16 2010]

  
kringle_mining
05:15:16 Wed
Oct 13 2010

Offline
2563 posts

Reply
SD#5 Structural Barrier


Below are two barriers. The horse shoe is a plunging anticlinal fold in the bedrock schist



The oxbow ponds are perpendicular to the current flow of Ottertail Creek. The shallow depth of gravels here suggest an barrier causing this topographic feature

This barrier could be:
1. an up thrown fault
2. a basalt dike ( basalt bolders are found while dredging)
3. a prominent quartz vein (large boulder found while dredging)
4. Two more plunging anticlinal folds
[4 edits; Last edit by kringle_mining at 20:00:50 Thu Oct 14 2010]

  
kringle_mining
20:08:37 Thu
Oct 14 2010

Offline
2563 posts

Reply
Re: SD#5 Structural Barrier

bump

  
outnaboutnak
03:39:00 Fri
Oct 15 2010

Offline
62 posts

Reply
Re: SD#5 Structural Barrier

Very interesting Kringle. I can think of several places off hand where I have seen examples of this and looking at topo's Im sure I can find more.



---
got gold?
 
 
Geo_Jim
05:49:53 Sun
Apr 24 2011

Offline
1241 posts

Reply
Re: SD#5 Structural Barrier

Hi Kringle,
Sorry it took so long for me to reply. Yes, I think you have interpreted the geology correctly. The quartz vein or rock ridge could be cutting across the valley floor acting as a dam/riffle. It sort of thing does happen. The former creek would be channeled by the outcrop and impact the gold distribution accordingly.
Geo Jim:smile:

  
kringle_mining
15:05:16 Wed
Apr 27 2011

Offline
2563 posts

Reply
Re: SD#5 Structural Barrier

Thanks for the comments Jim

I will be dredging this portion of the creek in late May 2011 (circled area in map below). If you can find time in your schedule this Summer to come up to Ottertail and Demar for a visit, I will come down river and pick you up with the airboat.

I am going up to UAF within the next couple of weeks to rock,chaulk talk with Rainer Newberry to discuss lithologies in this area, and to confirm his airboat ride.

[2 edits; Last edit by kringle_mining at 15:16:33 Wed Apr 27 2011]

  

Pages: [ 1 ]

[ Notify of replies made to this post ][ Print ][ Send To Friend ] [ Watch ] [ < ] [ Add Reply ] [ > ]

 Total Members: 11956

  • Can start a new thread. (Everyone)
  • Can't start a new poll. (Mods & Admins)
  • Can add a reply. (Everyone)
  • Can't edit your posts.(Everyone Registered)
  • Register :: Log In :: Administrators

    The time is now 12:18:04 Sun Jul 3 2022

    Powered By BbBoard V1.4.2
    © 2001-2007 BbBoy.net
    :: :: Trapping Pay Streak with Structural Barriers

    [Most Recent Quotes from www.kitco.com]

    [Most Recent Quotes from www.kitco.com]