metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
|
Post by metalsmith on Jul 30, 2017 4:59:30 GMT -5
Bloodstone was my original plan, but the green didn't really go with the willow creek so I changed to white agate from the polkadot agate mine. The basanite is a bit softer but being a form of basalt is tough enough to not undercut, but as you can see it doesn't get the wet polish like the jasper and agate. Well we knew what Tommy meant anyway - I was just yanking his chain. That is a rock of awesomeness. Of course we'd be interested in a post of details! It is not so much the perfect shapes that can be cut on a facetter, but the seamless joins that intrigue me. The times haven't allowed me to be so productive in the recent past ... hopefully there will be some more from me in the future.
|
|
metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
|
Post by metalsmith on Jul 16, 2017 16:51:33 GMT -5
1360x768 on laptop & recently Android tablet too
Everything appears on my 10" Android tablet just as it does on my laptop - everything, down to the last detail.
|
|
metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
|
Post by metalsmith on Jul 10, 2017 12:28:20 GMT -5
2017 Fun Cab Challenge... a perfectly square concentric shape Grey matter says no! ... Does not compute ... illogical captain! So long as you know what you meant!
|
|
metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
|
Post by metalsmith on Jul 10, 2017 12:17:31 GMT -5
This thread is just weird! agate - sci-fi - agate - sci-fi - agate - sci-fi Love it!
|
|
metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
|
Post by metalsmith on Jul 10, 2017 1:15:48 GMT -5
Red Dwarf ... Also just to resurrect another long-lived gothic horror / sci-fi household name - at least here although less recently - Hammer House productions.
|
|
metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
|
Post by metalsmith on Jul 10, 2017 1:09:24 GMT -5
Yes, the GREAT UNCONFORMITY. Something spectacular happened around 550 million years ago that washed away over a million years of rocks. This link has a reasonably accessible explanation of Phoenix geology. There is ~ billion years of missing geological record. Why it doesn't exist and whether it was washed away - not sure whether you meant literally or figuratively. See the map showing the Late Proterozoic sea - link and more geo exploring fun here - the reason why the sediments were deposited would be topographic difference: gravity providing the energy to move huge boulders & tectonic activity likely to get the ball rolling so to speak. Figure 1 of Rasmussen shows the physiographic provinces.
|
|
metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
|
Post by metalsmith on Jul 9, 2017 15:33:00 GMT -5
Scott you need to come in from the wild hunting cool rocks and watch some TV I don't care for Dr. Who, I am more of a Star Trek guy. Dr. Who is a long running British sci fi series. British? Meh Whatta they know about science fiction? ETA metalsmith 50 years of Dr Who - should keep you busy if you like Sci Fi What do the Brits know? Not much ... just starting out really ... Arthur C ClarkeJohn WyndhamH.G. Wells amongst othersI bought 'Of Time and Stars' - A C Clarke when it was years ahead of my reading age and I've read it time and time again since. Brilliant. Get busy ... enjoy!
|
|
metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
|
Post by metalsmith on Jul 9, 2017 1:05:54 GMT -5
The drape-model shown here isn't quite right. Think more along the lines of the sediments being generally laid down beds like the horizontal layers of a sandwich (though the basin-margin setting would have these pinch). Then these were tilted through approx 45 degrees. For the most-part the sandwich layers are then planed flat to the modern day desert erosional land surface, but on occasion, the more resilient layers resisted planing and protrude to form the buttes.
|
|
metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
|
Post by metalsmith on Jul 9, 2017 0:56:01 GMT -5
Thanks for looking metalsmith. The first section (A-B-C) shows the Tcbb purple with big rocks in it to be 300 ft. thick. The next section down (E-F) shows Tcz to be about the same, BUT between (K-L) shows Tcz only ~ 20 feet. Looking at the pink and purple in the above images, Those thicknesses going down past bedrock do not compute. The 20 foot thickness of the Zoo Breccia Member - Tcz - is adjacent to a fault. All of the faults K-L have the down-throw to the RHS. Stratigraphically beneath lies the Basal Member - Tcb - consisting of sandstones and breccia, then there is an irregular surface of the metarhyolite. This indicates an erosional surface. At one point in time the metarhyolite will have been the exposed bedrock (land surface), prior to the erosion and subsequent deposition of all the different breccias which buried it. The 20 foot thick Zoo Breccia Member - Tcz - is only 20 feet thick since its upper surface has been eroded of likely somewhere near 280 feet of material. The faults are all Normal (extensional) fault types, typical of a depositional basin, called Horst Graben. So the tectonic setting is a basin adjacent to an igneous emplacement against which the sediments deposit. If you reverse the fault directions then the units should join back up. The fault just to the RHS of Washington Street should be pushed up on the RHS. Then you can imagine that the purple (on the map) Stadium Breccia unit - Tcs - would join up with the same unit to the left of the Salt River Project. Further to the RHS - towards L - the Zoo Breccia Member - Tcz - lies on top of the erosional surface of the metarhyolite. However, replacing the faults should show the purple (on the map) Stadium Breccia unit - Tcs. So where has Tcz gone? The Zoo Breccia unit overlies the erosional surface of the granite (to the left). The Zoo Breccia Member - Tcz - should lie on top of the erosional surface of the metarhyolite but here it shows (green) Basal Breccia Member - Tcb - and (blue) Zoo Breccia Member - Tcz. This looks like a possible small anomaly unless the Stadium Breccia grades across into the Basal Breccia and Zoo Breccia members. The area below I on the XS G-H-J-I gives some insight into the nature of the metarhyolite / granite boundary. Not all may be quite as simple as the clean downthrow boundary that the Normal fault near L suggests.
|
|
metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
|
Post by metalsmith on Jul 8, 2017 15:40:20 GMT -5
Yeahbut . . . methinks the caves with tongues sticking out all formed within a month of each other. I'm not sure where Barnes Butte sits on the following cross-section - can anyone help? Where is Temple Butte in relation? Does the XS not cut Barnes Butte? link to Cross-Section (XS)Thickness should be taken normal to horizontal bedding (even where subsequently tilted).
|
|
metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
|
Post by metalsmith on Jul 8, 2017 3:59:57 GMT -5
Free hand rock climbers come to this park. About 12 acres. Pretty much a party spot on the weekends. These granite boulders are 15 to 35 feet tall. Above 900 feet elevation in this area, are these exposed granite boulders. I have State of Georgia geological publications dating in the 50's describing them as 'n----- heads', yes the 'N' word being used in a government publication go figure. Certainly they have destroyed them by now. Apparently few injuries. Amazing to watch them do their stuff. Being relatively safe low climbs they push the climbing envelope. Well that was my thing in the days gone by - and might yet come again. I recently climbed (around 3 weeks ago) my first boulder problem since my accident nearly 4 years ago. Only one; not too hard. It took me a couple of weeks to recover. Not my hardest climb, but my favourite rock has to be <adopts French accent> l'elephant in the forest of Fontainebleau not far from Paris: When you get this high you start to feel the pressure, even though the hard part is done. eta - not me climbing btw!
|
|
metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
|
Post by metalsmith on Jul 8, 2017 3:49:46 GMT -5
It's very interesting! I have this book on two of my Book sites watch list. How is your [a href="https://www.amazon.de//gp/offer-listing/0121986519/sr=/qid=/?condition=new[blocked Amazon Associate tag]bookfinder-de-test-a-21"]German[/a]? I occasionally find German books are good value - just check they're written in English first - this one is!
|
|
metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
|
Post by metalsmith on Jul 6, 2017 23:49:06 GMT -5
Most meteorites aren't going to have a streak
|
|
metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
|
Post by metalsmith on Jul 5, 2017 13:13:34 GMT -5
Mike,the 10th photo (# 8 too) is from a busted and cut Ammonite (From Montana) kind of experimenting with this material... Beautiful stuff to work with.. I should have recognised it. I believe those marks are called suture lines
|
|
metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
|
Post by metalsmith on Jul 5, 2017 0:37:26 GMT -5
That's great ... though I don't think DeBeers have anything to fear. We already have synthetic diamonds.
|
|
metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
|
Post by metalsmith on Jul 5, 2017 0:26:56 GMT -5
Same as Pat. Or nylon jaw pliers, but they don't hold up very well. I do have some nylon jawed pliers, but as has been identified, they don't last. So, a few suggestions: 1) be gentle - only applying the necessary force to straighten the wire 2) only use for relatively thin wire 3) you can buy pliers that will take replacement nylon jaws 4) make your own (well sort of): just line some flat pliers with kitchen roll or wet wipes. These are frequently made of plastic fibres. Yes it will wear out and then you can just replace it 5) thicker wire can be annealed and rolled between two mild steel plates but this only works for shorter lengths
|
|
metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
|
Post by metalsmith on Jul 4, 2017 12:38:45 GMT -5
I think toenails grow back. Slowly. Good luck! Yeah, there's already a foundation so I'm not worried about that ... it's just a case of whether or not I'll lose my next nail too - it's gone black. Well they do! I'm thinking of another little excursion in Autumn when the temperatures drop. I've put out an email to my usual suspects for expressions of interest. I think it must be holiday season but they seem to have left without setting their out-of-office ...
|
|
metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
|
Post by metalsmith on Jul 3, 2017 23:22:10 GMT -5
Hey! That's my job... Yeah, badassssssssssss!
|
|
metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
|
Post by metalsmith on Jul 3, 2017 23:15:13 GMT -5
Anyone familiar with the film Withnail and I? Well after a month of will it, won't it, finally I am without nail. My toe-nail and I just separated.
|
|
metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
|
Post by metalsmith on Jul 3, 2017 23:08:06 GMT -5
^^ Just that! Although I'm not an expert in it, I've certainly used it enough to have learned some characteristics of the material. Copper is higher melting point than silver so you can blast it and the silver solder will run with no danger of damaging the copper (unless you get really silly!)... I did manage to get some to melt (but I was trying to!) and it also melted the tip of my torch! Copper is very similar to silver to work, but even more lovely. Yes, you might have an issue getting a seamless join with silver solder, but you can take the opportunity to learn how to minimise what you need and clean up any excess. Copper is very malleable so pipe will hammer out nicely, it would just result in thinner big rings! Hey, thanks for the info. The person I spoke with said to start with a ring about half as wide as the finished product will be. Or, stamp one piece of pipe and then cut it into two rings. Now just have to get back to my old place and bring back my silver soldering supplies. Oh, and purchase a minitorch. You're welcome. You can't go far wrong - as far as mini-torches go - with a Dremel versaflame.
|
|