Re: Widespread depositional systems (was re: inference)

Karen G. Jensen (
Wed, 19 Nov 1997 20:02:29 -0600

Hi Glenn,

Mon, 17 Nov 1997 19:16:13 -0600 you wrote:

>At 09:33 PM 11/16/97 -0600, Karen G. Jensen wrote:
>>Do we see any processes depositing coarse sand and conglomerates over
>>100,000 sq.mi. like the Shinarump Conglomerate (requiring high energy
>>water), on top of over 5000 ft of similarly widespread strata (the entire
>>Grand Canyon series), and overlain by many more widespread layers including
>>the Morrison Formation (400,000 sq.mi.) with few places showing erosion
>>between layers?
>Sigh. Karen, I can't emphasize strongly enough that what you get from the
>young-earth apologists is not the correct view of geology. Yes we do find
>widespread layers being deposited today.

There are widespread layers being deposited today, of course. Thank you
for the data on the Gulf of Mexico, and the Sahara, and Antarctica. Truely
massive! It gives one an appreciation for the vastness of the fossil
layers, too.

I didn't mean to imply that there were no vast sediments today, but I
wondered what you thought about such deposits as the Shinarump
Clonglomerate over such a wide area, not in a linear band like a riverbed
or a shoreline, hundreds of miles across. Conditions today are not
depositing anything like that. (You wouldn't call the Antarctic glacial
conglomerates similar, would you?)

Thanks for your data on the Morrison, too. One thing that facinates me
about it is that the parts that are, as you noted, varicolored red, green,
gray and tan mudstone, look so much like the part of the (Triassic) Chinle
which overlies the Shinerump (the basal member of the Chinle). At one
fault near Grand Junction Colorado the two are exposed side by side, and
unless you knew the surrounding structure, you might not notice the
difference at all. It makes one wonder about the conditions of depositon
at the two time periods.

>Karen, I would strongly suggest that you not only check out for yourself,
>what I say, but also what any apologist says. I was forced to conclude that
>too many people don't do the hard work of really understanding a field
>before they criticise it.
True. I am checking as fast as I can. Very sorry you were disappointed in
the level of expertise among creationists when you were looking. I don't
think any of us can hope to reach a level of really understanding
geological earth history in this life, but we can keep searching. Thank
you for your responses.