Natural objects themselves,
even when they make no claim to beauty,
excite the feelings, and occupy the imagination.
Nature pleases, attracts, delights,
merely because it is nature.
We recognize in it an Infinite Power.
~ Karl Wilhelm Humboldt
We are from the land of
active volcanoes and an island culture that puts great store in rocks.
I am drawn to places with beautiful rocks. I love rocks.
Granite is a volcanic rock. Granite is the core rock
of our San Bernardino Mountains, forming its backbone.
Where did all of these
granite rocks come from?
An igneous rock, granite is created
by heat and pressure deep in the Earth's crust. As the crust is uplifted and eroded by mountain building processes, granites are brought
to the surface and slowly and surely, it is being weathered by
chemical and mechanical processes into soil.
Anyone who has tried to
garden in the Valley knows that this is true. Just when you
think you've cleared out all the rocks from your garden, more pop up!
Getting back to the
granite boulders on the Woodland Trail: see how they are
beautifully lichen-covered on their west side?. Eventually,
millenia from now, lichen, water, ice, wind, sun, and temperatures
will reduce these rocks into soil.
What is lichen
[pronounced: lye' ken]?
Lichen is a composite plant consisting of an algae and a fungus living together in a mutually beneficial
relationship. Or, as my plant-loving husband says:
Freddy Fungus and
Alice Algae
took a likin' (lichen) to each other.
"Theirs is a symbiotic
relationship," he explains. "Just like ours."
One kind word can warm three winter months.
~ Japanese Proverb
Lichen breaks the granite
down by working on its surfaces. The algae photosynthesizes (makes
its food with water and sun) and the fungi serves as the glue that
holds them together while retaining moisture. The acids that the
lichen make help to dissolve the rock, turning it into soil when the
granite particles mix with decomposed organic (dead plant and
animal) materials.
Meanwhile,
water from rain and snow fills the cracks in the rock, and when the temperature
drops, the water turns to expanding ice that fractures
the granite.
Through unnumbered
centuries, Nature chose lichen and water as its tools to turn hard
granite into productive soil. The evidence of this
patient process is all about you.
Look down at your feet.
The Woodland
Trail that you are walking on is made out of granite that has been
decomposed by Freddy Fungus, Alice Algae and water as rain, snow and
ice.
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Big Bear Lake
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