[Leica] Tuesday Trees

[Don Dory]

Hello Jim, Barton Creek runs into Barton Springs which is an iconic
swimming hole, maybe a large as two Olympic swimming pools.   The Springs
are filled by outflow from the Edward's Aquifer which is also a major waste
source for the county.   Besides the university and State Capital the
Springs are a foundational part of city living.

When our mis- beloved mayor understands that out R naught is below one he
will reopen the Springs and I will have a series on the pool.   If our
grocery stores and big box home improvement stores can keep track of
customer concentrations then the city should be able to monitor and control
the pool for appropriate distancing.   There is a spillway just downstream
of Barton Springs that is beloved by dog owners: or city kept 12-18 city
employees at the entrance points to keep people out.   They obviously have
the budget to control density to save levels.   The state manages our parks
by making entrance by reservation only to control density.

On Tue, May 26, 2020, 11:39 AM Jim Nichols <jhnichols at lighttube.net> wrote:

> Nice details.  I have Bartons in my ancestry, and am reminded of it with
> your frequent references.  I tried to nail down a connection to the
> fellow who came to Austin, but couldn't quite make the connection.  I
> suspect he was a brother to my Barton ancestor.
>
> On 5/26/20 4:29 AM, Don Dory via LUG wrote:
> > Greetings to all.  I am going to start with an abstract of a Desert
> Willow
> > growing in my backyard.  The morning sun hits the new foliage and makes a
> > beautiful shape:
> >
> >
> http://gallery.leica-users.org/v/don_dory_gmail_com/Tuesday+Trees/Desert+Willow.jpg.html
> >
> > I found this tree seemingly doing well growing in rocks; admittedly at
> the
> > edge of Barton Creek which goes dry most of the year;
> >
> >
> http://gallery.leica-users.org/v/don_dory_gmail_com/Tuesday+Trees/determined+tree.jpg.html
> >
> > Austin sits on a large limestone bed formed when a sea/ocean covered this
> > geographical area.  This image shows what determined trees can do with
> the
> > layers that are more clay than limestone:
> >
> >
> http://gallery.leica-users.org/v/don_dory_gmail_com/Tuesday+Trees/cedar+grove+on+limestone+shelf.jpg.html
> >
> > Continuing that same theme, this tree is doing fine in the same
> > conditions.  What you are seeing is evidence of climate change a few
> > million years ago.  Something prevented the various shellfish from dying
> > and falling to the bottom of the seabed for a large number of years with
> > only fallout from the sky and runoff from the land to deposit on the
> seabed.
> >
> >
> http://gallery.leica-users.org/v/don_dory_gmail_com/Tuesday+Trees/advantage+found+in+the+clay.jpg.html
> >
> > Interesting to note the vast limestone deposits in the Kansas/Missouri
> > border around Kansas City do not show these clay layers but are limestone
> > for tens to hundreds of meters.
> >
> > All the best.
> >
> > _______________________________________________
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> >
> --
> Jim Nichols
> Tullahoma, TN USA
>
>
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