Quote:Some of what you see on the Earth appears not much older than that. Russel Humphreys' study of helium dissipation from zercons into surrounding mica is pretty hard to argue with
Russ Humphries doesnt mention that the dissipation of radiohelium is inequilibrium proportion to the URanium Thorium or HAfnium in zircons, clocks of which are completely reset by any heting episode.(Zirconium doesnt emit helium in a zircon, its the U/Th/Hf-Humphries doesnt present his stuff to his colleagues because he knows hed get laughed off the podium),
Hes a geophysicist not a geochemist or a radiochemist. His expertise is pretty good in discretization of deep seismic data (thats what he was hired at Sandia for) . He shouldnt get into areas that hes totally unarmed.
Im always amazed at how guys like Humphries can be so closed mouthed in the context of their "day jobs" and suddenly open up with scads of verbal poop when they punch out and head for the TEmple of Creationist Crazies.
I asked a question that occurs from a lesson plan from beginning Historical geology. The fulll extent is as follows
1The oldest rocks in a pile are metamorphosed sediments of Grenville age. Overtop these are a gradational coarse to fine layering of sediment that varies from sands on the bottom to limey shales at the top.
2Then these rocks are "hardened" and then are (uplifted)wherein non ductile vfractures occur that infill by remobilized quartz containing Zr from the Grenville.
3These limey shales are then eroded and then tilted, atop this a new layer of (up to 2000 ft) of dark organic shales are emplaced, "hardened" and then folded separately (we know this because the axis of the folds is different from the earlier rock layer and fractures in this layer break through to the limey shales below but their fractures of earlier time, dont pierce the present layer)
4These layers are tilted and then overlain by alternating layers of sandy shales and organic shales that cyclically include coal swamps).
5The coal swamps are then hardened and folded severely which also include earlier quartzes with included zircons and incoming Uranium /Thorium containing sediments
6The coal layers are then eroded and covered with another layer of sediment that was subsequently folded and then eroded.
7 On top of this, the erosion surface of the last sediments had been converted to a soil and show a well developed "pedon" indicating a temperate slimate.
Nothing happens for a few tens of millions of years when
8In the center of this entire section an apparent "tear" occurs which is infilled with sediments of continental nature and shows a basin that varies between 100 down to 10 miles wide(Newark/Gettysburg/Culpepper basin)
Red sediments incorporate soime of the materials from the surrounding earlier sediment layers
9These sediment layers are hardened and tilted and slightly uplifted and eroded
10On top of these are layers of glacial moraine sediments that show at least 4 episodes of separate glaciation. Then these glaciers melt and meltwater carry glacial sediments down into two large drainage basins
This is the "Bumper sticker version of the history of the Central Appalachians (from NY to about Virginia). No big detail .
My question is , How do you get all this sedimentological detritus piling up as evidence in a period that does not involve at lest a few hundred million years? If you can come up with an alternative hydrology and physical world, Im very content to listen. (Im certain that this will be dismissed by RL in a few snotty sentences, or gunga will come up with a derisive comment about my own background, and nothing substantive will be pesented by the Creationist Camp. )
Remember these are data presented to beginning Historical Geology students, so most of these kids arent majors and I didnt delve into the arcania of "why we know these data are correct". I can easily do that but I dont wanna embarrass RL or Gunga's beliefs. I only wnt them to know that theres a huge body of knowledge that gets dismissed by the CReationist choice of using predigested "sound snippets"