[X] My Assistant

[dilo]

I used Sol583 and Sol595 PanCam l256 color images to obtain this nice crossed eyed South view:

This is a 3x stretch enlarged detail of HomePlate (a little bit noisy but showing 3D structure):

I will make soon analglyphed versions... (maybe someone else before me! )

[Bill Harris]

Although "we" call the feature behind Homeplate "Cindercone", it's just a convenient name and not an accurate description. First impression was a cindercone, but it seems ot be more of a mesa capped with a resistant rock.

Geologists assign names oddly.

In PaintShop Pro (and I presume PShop) there is a specific menu item where you can spit a 24-bit image into it's component RGB channels, it's
Image->SplitChannel->Split to RGB. You'll end up with three 8-bit grayscale images, each with info for the R,G or B channels. Just save the Red, and a Blue or Green. I disremember which is for the right eye and the left eye.

--Bill

[general]

Although "we" call the feature behind Homeplate  "Cindercone", it's just a convenient name and not an accurate description.  First impression was a cindercone, but it seems ot be more of a mesa capped with a resistant rock.
--Bill

I propose the name "Pitcher's mound"

[bedrockshock]

Anyone interested in a good paper involving probably the Largest known shatter cones can check this linkNew Constraints on the Slate Islands impact structure, Ontario, Canada

A good photo by V. L. Sharpton taken of these monsters is used in "Traces of Catastrphe" by Bevan M. French which used to be available from Johnson Space Center.

Most of the photos I found on the web were poor.


Enjoy

Mike Farley

[aldo12xu]

Damn, I lived in Thunder Bay, which is 100km to the west, from 1976-86 and I never heard of the Slate Islands as being a meteorite impact site. Here's another good site on the Slate Islands. No close-ups of the shatter cones, though

http://ottawa.rasc.ca/astronomy/earth_craters/slate_islands/

[CosmicRocker]

Yeah Bill, I know what you mean. But I kind of like general's suggestion for a place name. That's one that could stick.

bedrockshock: I'd love to see that PDF, but I keep getting a 404 error. That's possibly the area with the one that Bob mentioned. Has anyone else gotten that file?

aldo12xu: I think the little patch of sloping caprock on the Pitcher's mound is a significant clue, as are other patches of caprock in the basin. I'm not certain they all are the same layer, but they might be related. Regarding anaglyphs; there are a number of sites on the net that describe the process. If we need to get into it further, it can be discussed in the "imagery and tech" forum. But essentially, you are correct. I'm still trying to refine my techniques. Here are two sites that have useful information. There are a number of others.

http://www.scec.org/geowall/makeanaglyph.html
http://www.crystalcanyons.net/Pages/3DGuid...tereoWindow.htm

[Bill Harris]

"Pitcher's Mound" works for me.

It seems to me that the caprock on Pitcher's Mound is like the Homeplate caprock with another uneroded unit over it. We'll see it close-up soon enough.

That "404'ed" shattercone PDF seems to be at:

http://www.gi.alaska.edu/~rherrick/reprint...ologySlates.pdf

note _~rherrick_ NOT _~rherricks_. I got to the Robert Herrick homepage but didn't download the PDF (dialup, ya know). The Geological Institute site seems interesting, ditto the http://www.gi.alaska.edu/~rherrick page.

--Bill

[Bob Shaw]

Anyone interested in a good paper involving probably the Largest known shatter cones can check this linkNew Constraints on the Slate Islands impact structure, Ontario, Canada

A  good photo by V. L. Sharpton taken of these monsters is used in "Traces of Catastrphe" by Bevan M. French which used to be available from Johnson Space Center.

Most of the photos I found on the web were poor.
Enjoy

Mike Farley

Mike:

That paper describes a shatter cone structure which could be 20m across the base, if it conforms to the typical morpholgy! Having said that, it formed in a ~32km crater...

I wonder if the shatter cone image I recall was in French's 'The Moon Book'?

Bob Shaw

[bedrockshock]

Thank you Bill Harris for fixing my Slate Islands link problem. I don't necessarily belive the cinder cone like features at home plate are shatter cones but I knew large cones existed at the Sudbury and Slate Islands Impacts. The survival of large Sudbury cones at its heavily eroded age should make shatter cones at Home plate concievable, although I doubt Sudbury ever expierienced the aolian process Gusev has seen.

If I find a nice photo of the Slate Islands shatter cone I "try" to post a link.

Thanks Mike

[dilo]

Time to make better 3D views using larger Sol583=>Sol621 baseline (almost 35m in H-P direction, based on last route map):

Anaglyph: crossed-eyes: 3x stretch:

From last image, Spirit should "attack" HomePlate coming from NE or SE direction (smaller slopes...)

[dilo]

..forgot stretched anaglyph...

Attached thumbnail(s)

 

[Nix]

you're keeping me out of my work dilo with your images

Nice stereo stuff, I think I'm going to have a long good look at the features visible!

Nico

[dilo]

you're keeping me out of my work dilo with your images

[Bill Harris]

Whew, methinks that dilo has been busy!

Actually, Spirit needs court and romance Homplate from that beautiful Northwest and West vertical wall and then drive on top to attack... (smilie for a vicarious leer)

--Bill

[Bob Shaw]

Looking at Dilo's excellent 3-D images, I wonder if that is another mini version of Home Plate on the edge of the hillock to the right, but seen in profile?

Bob Shaw

[Bill Harris]

That hillock has been called "Pitcher's Mound" (initially "Cindercone"), and yes, I think that it is the Homeplate unit, with some of an uneroded overlying unit (more rust-orange) above it.

--Bill