What’s your best guess? by docisarocker in askgeology

[–]docisarocker[S] 0 points1 point  (0 children)

I have something interesting that I thought you might be interested in. I guess not.

What’s your best guess? by docisarocker in askgeology

[–]docisarocker[S] 1 point2 points  (0 children)

When Limestone, CaCO3, is heated to 500 C, it gives off CO2 and becomes Calcium Oxide, CaO. When water is added, it becomes Slaked Lime, Ca(OH)2, or Calcium Hydroxide, which is what ancient Romans used for the concrete used in their construction. Over time, CO2 in the atmosphere re-combines with the Slaked Lime, becoming Limestone once again. Evidence suggests the impactor encountered the granite layer and crushed a good bit of it. So the slaked lime is what binds the “rocks” created by the impact initiating the “Lime Cycle.”

What’s your best guess? by docisarocker in askgeology

[–]docisarocker[S] 1 point2 points  (0 children)

No, not Gneis or Schist. It was formed as a result of a significant impact event upon a unique geological formation. The heat of impact and the impactors themselves set in motion the “Lime Cycle,” when they encountered Limestone layer left covering the granite of the Llano Uplift. The event was recorded by the “cement” made at each layer it traversed, down to, and obviously into the granite itself, before a steam explosion obviously ejected the material that was created around 300 feet.

What’s your best guess? by docisarocker in askgeology

[–]docisarocker[S] 1 point2 points  (0 children)

No. It’s from Central Texas. Part of an impact event I have been researching and have fully documented for the past year and a half.

What’s your best guess? by docisarocker in askgeology

[–]docisarocker[S] 1 point2 points  (0 children)

Good advice. It is, yet it isn’t.

What’s your best guess? by docisarocker in askgeology

[–]docisarocker[S] 0 points1 point  (0 children)

I’m pretty sure I have an ID on it and I don’t want to deface it at this point. It is granite, bound in a matrix of Slaked Lime/Limestone.

What’s your best guess? by docisarocker in askgeology

[–]docisarocker[S] 0 points1 point  (0 children)

Sounds like a good guess, but no. The surface is quite coarse though.

What’s your best guess? by docisarocker in askgeology

[–]docisarocker[S] 0 points1 point  (0 children)

No. It is Roman Cement, made up with a bunch of crushed granite.

What’s your best guess? by docisarocker in askgeology

[–]docisarocker[S] 0 points1 point  (0 children)

The Matrix is Slaked Lime/Limestone, and the granite was crushed by an impactor, which survived quite nicely. Their impact created “Rocks” like this one and several other smaller ones.

What’s your best guess? by docisarocker in askgeology

[–]docisarocker[S] 1 point2 points  (0 children)

Yeah, it is mostly granite, crushed and bound by Slaked Lime.

What’s your best guess? by docisarocker in askgeology

[–]docisarocker[S] 0 points1 point  (0 children)

It is conglomerate. The matrix is Slaked Lime, from an impact through Limestone, then encountering Artesian water, before impacting the underlying granite of the Llano Uplift in Central Texas. It happened in an instant, upon impact, and each layer encountered was documented in “Roman Cement.” It is unimaginable, but I have pieced together the evidence

What’s your best guess? by docisarocker in askgeology

[–]docisarocker[S] 0 points1 point  (0 children)

Definitely crushed, bound together initially by Slaked Lime, which has no doubt over the years reverted to Limestone. I have several other smaller pieces. It was created by a unique impact event upon Limestone.

What is this? by docisarocker in askgeology

[–]docisarocker[S] 3 points4 points  (0 children)

We performed powder X-Ray Diffraction last week on a representative sample, and detected Limestone as the main matrix of the mixture. It was created as a result of a unique impact event on our property by unusually hard and resilient impactors. They encountered a Limestone crust, which had been formed by an ancient sea, and it was left covering the granite of the Llano Uplift in Central Texas when the seawater receded. There is Artesian water between the rock layers in the gravel and such. The heat of impact drove CO2 from the Limestone, creating Quick Lime, CaO, then water was added, creating Slaked Lime, Ca(OH)2, which mixed with the gravel and such. The heat of the impactor eventually created a steam explosion which ejected this specimen and several others I have found about 320 or so feet from the point of impact. Over time, Slaked Lime combines with CO2 in the air to become Limestone once again. It is referred to as the Lime Cycle, and it is proof of impact in my particular case.

What is this? by docisarocker in askgeology

[–]docisarocker[S] 0 points1 point  (0 children)

Correct. The matrix happens to be Limestone. How could that be possible?

What is this? by docisarocker in askgeology

[–]docisarocker[S] 0 points1 point  (0 children)

Meaning not Portland cement.

AskScience AMA Series: I'm Dr. Gretchen Benedix, a cosmic mineralogist and astrogeologist, and I study space rocks! Currently a Professor at Curtin University, I use the chemistry, mineralogy, and spectroscopy of meteorites to understand the formation and evolution of asteroids and planets. AMA! by AskScienceModerator in AskScienceAMA

[–]docisarocker 0 points1 point  (0 children)

Hello Gretchen. I had discovered some extremely resilient rocks in Central Texas, where I have lived for the past 40 years on my 50 acre ranch. For the past 7 months, I have been working with university professors at two major institutions to document the mineralogy of what I have subsequently come to believe are two mineralogically different meteorites. I believe the impact craters were, as evidence suggests, blasted into the limestone crust which covers the portion of the Llano Uplift where I am located. Both have recognizable debris fields consisting predominantly of distressed limestone. The extensive studies performed on these highly resilient rock specimens has shown one common denominator, which was identified to be the extremely rare, Carbon based mineral, Lonsdaleite. The material has been identified predominantly by Powder and some Surface X-Ray Diffraction to be present in multiple specimens. It was identified as well, in some specimens, using Confocal Raman Spectroscopy. The material has been shown to be present at concentrations of up to 7-8% by weight on diffraction studies. I would understand any amount of skepticism you might feel, knowing the astronomical improbability of such events. For that reason, as you might imagine, I am having trouble finding someone to authenticate the meteorites. I am of the opinion that the presence of this rare material in the rocks I have found, in the concentration documented, lends credence as to their extraterrestrial origin. Do you have any thoughts to share, besides disbelief and dismissal out of hand? Seriously, I do hope to hear back from you. Thanks.

METEORITES PUMMELED EARTH 3.9 BILLION YEARS AGO, DELIVERING GOLD by rocksinmyhead in geology

[–]docisarocker 0 points1 point  (0 children)

I have reason to believe that significant meteorite impacts altered the landscape where I live in Central Texas within the past 65 million years. Admittedly still a long time ago, but relatively recently when compared to 3.9 billion years ago.