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Dr GS Hurd

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fig17.jpg


Do you have the original reference to this photograph?
 
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RickG

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The interesting thing about Snelling is that he has published articles in the mainstreams scientific literature with no problem for an old earth. What is so interesting that some of them post date earlier publications of his in the creationist literature that do have a problem with an old earth.

How do they explain the Coconino Sandstone. The flood came, flood went, then came again, and again, and again....? And how do we get those individual layers of limestone. Floods just don't leave sediments like that, especially in said timeline.
 
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pgp_protector

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pgp_protector

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mpressive argument considering that you had only two geology courses in college.

Take a look of this image of a pyroclastic deposit (Mt. St. Helens). The laminated exposure was cleaned up by a scraper. So the whole image area could show a similar delicate layering structure.
fig17.jpg

The argument is on the mechanism of deposition. A violent eruption/deposition is able to create fine layered sediments like this in an extremely short period of time (days). So why can't a very thick (>1000 ft) clastic sedimentary deposit be made by a very large flood in a short period of time?

[an off-the-point reply to your argument is that many layers in this image are not truly graded. They are only separated deposition of different size particles, like a layer of mud above a layer of silt. They are two layers, rather than one graded layer.]
Do you have the original reference to this photograph?
It was a while, and I forgot how did I find that image. I must have searched by Google. Sorry.

2 seconds in Google found the source.
http://pubs.usgs.gov/pinatubo/wescott/
Figure 17. Postclimactic deposits overlying June 15 massive pyroclastic-flow deposits in Sacobia River valley about 0.5 km south of area shown in figure 5 (site 6, fig. 1). Fine-grained, laminated ash-fall deposits of layer D lie to right of trowel, which is 27 cm long. Coarser grained bedded sediments above layer D were emplaced by fall and base surges generated by secondary (rootless) phreatic explosions in hot pumiceous pyroclastic-flow deposits. (Photograph by W.E. Scott, no. WES-92-19-16, March 13, 1992.)
 
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Dr GS Hurd

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2 seconds in Google found the source.
http://pubs.usgs.gov/pinatubo/wescott/

Great. Thanks.


I take it as obvious that you never read the article. The title was "Pyroclastic Flows of the June 15, 1991, Climactic Eruption of Mount Pinatubo" This wasn't Mt. St. Helens. Not that that bothers me at all. In fact, it is better because it replicated on a tiny scale the exact pattern I described for Mt. St. Helens.

There is the pre-eruption layer, the ash fall, and then lahar flows.
 
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juvenissun

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To me, what you said in your blog only attacked the easy targets. You missed the real geological significance of this stratified ash deposit (in related to Noah's Flood). If you are a real sedimentary geologist, you should know the key issue is on the process of deposition which is related to the mechanism of such volcanic eruption. The thickness of the deposition is not a concern. I fail to see any such argument in your blog.
 
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Justatruthseeker

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Geology is one of the simpler sciences to comprehend, if you let the stones themselves speak.

Clastic deposits fall from the sky. Lahars and erosional deposits by water must flow from higher ground.
As I tried to explain, that is exactly what one would expect from clastic deposits sorted by wind. Water born sediments may also show layering if deposited by flows of varying speeds, as in the season varves deposited from glacial milling.

:wave:

Sedimentary process are by themselves a layering process. They require no flowing water all all to form. If we let the rocks speak for themselves that is and don't try to tell particles in suspension how they are to behave.

https://en.wikipedia.org/wiki/Sedimentation
"Sedimentation is the tendency for particles in suspension to settle out of the fluid in which they are entrained and come to rest against a barrier. This is due to their motion through the fluid in response to the forces acting on them: these forces can be due to gravity, centrifugal acceleration, or electromagnetism."

Clastic deposits are also formed from sedimentary processes.

https://en.wikipedia.org/wiki/Clastic_rock
"Geologists use the term clastic with reference to sedimentary rocks as well as to particles in sediment transport whether in suspension or as bed load, and in sediment deposits."

An excellent example of this is sandstone.

1280px-Lower_Antelope_Canyon_478.jpg
 
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Dr GS Hurd

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If you were the one in the picture, then it is quite impressive. I wonder why would you want to do that. Are you trying to take samples?

We did a series of sediment profiles in a deep colluvium fill from ~45 feet below grade. The lowest start about calibrated C14 8200 years B.P.

This is the long view.
IMG_0001_1_zps9lkprcci.jpg
 
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My Shalom

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Debating by youtube is not looked on well.

If you want to include a video make sure you write a summary of the arguments and evidence. You think I'm actually going to spend over an hour watching it?
Personal attack probably won't be read either. However, I'm wondering why all their posts are deleted?
They've left and don't want any evidence of posting left behind or what?
 
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Justatruthseeker

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Dr GS Hurd

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Sedimentary process are by themselves a layering process. They require no flowing water all all to form. If we let the rocks speak for themselves that is and don't try to tell particles in suspension how they are to behave.
Indeed! Lacustrian deposits are deposited from still water.
Clastic deposits are also formed from sedimentary processes.

https://en.wikipedia.org/wiki/Clastic_rock
"Geologists use the term clastic with reference to sedimentary rocks as well as to particles in sediment transport whether in suspension or as bed load, and in sediment deposits."

An excellent example of this is sandstone.

1280px-Lower_Antelope_Canyon_478.jpg
And you will note the cross-bedding in this sandstone. Note the unconformities where the layering abruptly changes direction. This is characteristic of desert or beach dunes formed and deposited by changing winds.

:wave:
 
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juvenissun

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juvenissun

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