Sideling Hill Creek, downstream from Hemlock Hole |
Without a doubt, looking up is what makes folks who are geologically inclined among the worst drivers on the road, providing stiff competition for the people who send and receive text messages while driving. Example: Me: "Look at that road cut!" My daughter: "LOOK AT THE ROAD!!!"
I can see it now: the straight-laced state trooper peers at me through his mirrored dark glasses. "Ma'am, can I see your license and registration? No, you weren't going over the limit, but high-speed stratigraphy has been outlawed in this state. You'll appreciate that outcrop better if you're standing still."
As I mentioned in my previous blog, my passion for rockhounding led me to look down, which led in turn to my appreciation for fungi and wildflowers. My habit of looking down is also, relatively speaking, safer for myself and those around me: I tend to not step on bees or other interesting insects and, despite what you may think, I manage to avoid MOST of the poison ivy that adorns the woods of south-central Pennsylvania.
Mist on Hemlock Hole Late August 2009 |
Tourists! Boaters at Hemlock Hole During Reconstruction of the Steps in April 2010 |
Looking Downstream from the Hemlock Hole. Taken from the Middle of Sideling Hill Creek in August 2010 |
Previously I had only walked the creek via a trail running from the camp to the farmhouse. I began a series of explorations, either alone or accompanied by anyone who was inclined to tag along, including photographers, longtime members, and even newcomers.
According to John Harper, who wrote the chapter on the Devonian in The Geology of Pennsylvania, Sideling Hill Creek and its predecessor streams have been cutting through Sideling Hill and associated landforms for about 290 million years. To put this into perspective, the events that raised the Appalachian Mountains occurred about 300 million years ago--a mere 10 million years before. That sounds like a lot but in the context of the 4.5 billion year history of our planet, it's not. Really. In fact, it means that the creek was probably already there when the continent-continent collision that produced the southern Appalachians took place, and that the water started cutting into the rock pretty much as soon as the rock started rising. Note: the first appearance of Homo sapiens sapiens is a by comparison only 195,000 years ago. Sideling Hill Creek is REALLY old. Okay, not as old as the Susquehanna, but pretty damned old.
Undercut Sedimentary Bed, Sideling Hill Creek August 2009 |
Walking downstream the cliffs, layered in pinkish brick red and pale green, rise high to your left. Certain beds seem to attract moss and lichen; others do not. Some beds are shot through with quartz veins; others have evidence of fossils. The stream's meandering power is strongly evident as well: less resistant beds have been cut deep back into the hillside, and you may find flood debris lodged in tree branches 7 feet off the ground.
Last summer I became fascinated by how Sideling Hill Creek seemed to cross cut some of the rock beds; this summer I was able to make more detailed observations of the bedrock that ordinarily lies underwater. Some of this rock is very dark, seems much more resistant to erosion than other layers of the formation, and is pocked with craters, of which a number have worn straight through to become holes. In the picture below you will observe (especially at the left) the layers of rock plunging into the ground. I am still working out in my head how the creek came to be cutting across these beds instead of following them.
Panoramic View of Quartz Arenite Beds in Sideling Hill Creek August 2010 |
During our conversation John Harper filled the gap for me, identifying this rock as quartz arenite, an extremely well cemented sandstone, and the fossil worm holes as Skolithos. Not to worry: knowing their name does not in any way diminish my fascination with them.
Remember, when you're looking down, rocks are not the only thing you'll see:
Red-spotted Purple Limenitis arthemis astyanax |
Red Admiral Butterfly |
And that is--I think--how Ganesh came to me.
Sometimes, when the weather is especially fine, I like to go on walkabout before I head out from the Farm, to take pictures and--wait for it--look for rocks. On this particular occasion, armed with camera, tripod, and walking stick I set off down the path past the Fox Altar. I found a worn trail down to the creek bed, and spent the next hour wandering idly taking pictures of places I could not have reached earlier this spring.
I was about to turn back when something oddly un-rocklike caught my eye. Before me lay an oxidized metal plaque: an elephant-headed god superimposed on the symbol for the sacred sound OM. I don't follow the Hindu gods, but I know one when I see one, and this was Ganesh, who is god of good fortune, of teachers and learning. It is from his trunk that the OM emanates.
I could not believe my eyes.
The Ganesh Plaque Above the Arch Altar of Things Found |
SO...
I hiked the creek bed trying to find understanding,
find rocks,
take pictures,
and got the spiritual pot of gold.
There is treasure everywhere.
Lovely. The pictures are beautiful. I only wish you were on Live Journal instead. lol
ReplyDeleteFie on LJ...LOL
ReplyDelete