Re: Geology Question (KRS related)

Eric Stevens wrote: qf5au1578ameebr4c13sdqlg6k6hhflgak@xxxxxxx,

On Sat, 4 Feb 2006 11:08:14 +0100, "Peter Alaca" <P.Alaca@xxxxxx>
wrote:

Eric Stevens wrote: ovn8u1pb7e42qepn6i2nplgr1030rar0kn@xxxxxxx,

On Fri, 3 Feb 2006 23:23:28 +0100, "Peter Alaca" <P.Alaca@xxxxxx>
wrote:

Eric Stevens wrote: 45i7u19da3nl2b5n8trsivqlf1bqlu6cj4@xxxxxxx,

On Fri, 3 Feb 2006 11:36:10 -0500, "Steve Marcus"
<smarcus_spamout_@xxxxxxx> wrote:


One of the differences between us is that I prefer to deal with a
problem one item at a time while you tend to respond with a whole
cloud of issues. There is a term for this ...

Problem with you is that you always prefer a sideroad.
There is also a term for that.


Okay. Let's modify the claim by saying that the hill is at least
adjacent to land that, historically, was acidic.

You don't really know that either. I have already referred to
http://www.agviselabs.com/tech_art/grdsolph.php which suggests
that the subsoil pH is likely to be >6 and possibly in excess of
8. That is, it may range from weakly acidic to weakly basic. In
other words it is approximately neutral subject to the normal
range of natural variation.

Where on that page you read that suggestion?
I read a different story

" The variability in soil pH found in many fields is
real and should be expected. Data compiled for
1997 from AGVISE Laboratories in Benson,
shows that 40% of the fields grid sampled had
soil pHs ranging over 2.0 pH units. 18% of these
gridded fields had pH values ranging over 2.5 pH
units (i.e. from pH 5.5 to 8.0).
In the glacial till areas of North Dakota, where
the average field pH is >8.0, it is not unusual to
find areas in each field with a pH of 6.0 or lower.

You are right. I seem to have mangled my paraphrasing. My only
excuse is that you didn't pick me up the first time I posted it.
:-)

Nevertheless, the subsoil pH (for glacial till areas of North
Dakota) are likely to have a pH of more than 6. I should have
stated also that the _average_ is more than 8. That is, the soil is
basic, not acidic.
...
In northern areas, even when the topsoil pH is
less (<7.0) acidic, it is very likely that the
subsoil has a high pH (>7.0)(basic), due to the
calcareous nature of the soils in these drier
regions
. ...
In southern Minnesota, Eastern South Dakota,
Nebraska, Iowa and other areas with low soil pH,
crop production will increase when lime is
applied to areas within fields with low soil pH in
the topsoil. Soils in these areas usually have
acidic sub-soil. ... "

But you still ignore "In southern Minnesota ... soils...
usually have acidic sub-soil"

The argument is over in any case. I have been informed in an email
from Scott Wolter that the pH of the KRS site was 7. I don't know the
details.

No, the argument is not over, because it means
that the ph of _todays_ soil is 7.
And I guess (don't know why) that the sample was
taken from the heavily disturbed topsoil and that
the KRS was buried in the subsoil.

--
º°º°º°º < Peter Alaca > º°º°º°º°º°º°º°º°º°º°º°º°º°º°º°º°º°º°






.

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