Hudson River Valley PictorialsteemCreated with Sketch.

in nature •  last year  (edited)

Shawangunk Ridge2 _Bear_Hill_Preserve_autumn Juliancolton 4.0 cc.jpg
Bear Hill Preserve on the Shawangunk Ridge, in New York State. Image credit: JulianCotton on Wikimedia Commons. Used under a Creative Commons Attribution-Share Alike 4.0 International license.



For those who have never visited the mountain regions of New York State, this pictorial will be an eye-opener. Most people have heard of the Sierra Nevada in California, highest point 14,505 feet, and the Rockies in Colorado, elevation over 14,000 feet. Most have heard of the Great Smokey Mountains, elevation 6,643 at the highest point. The mountains of New York State may not reach as high as these noble ranges, but they tell the story of the states' geological past. Shawangunk Ridge, about 2,240 feet, for example, in the picture above, soars above the surrounding landscape because of its quartz conglomerate composition. The conglomerate is made up of mostly quartz, some silica and a small amount of iron. It took millions of years to form. This durable rock formation resists erosion and allows the mountain to carve sheer cliffs in wooded landscape. Below the cliff, the softer siltstone and siliceous sandstone are more susceptible to erosion.



Shawangunks2 CastlePoint_Shawangunks_NY 3.0 Mwanner at English Wikipedia.jpg
Castle Point in the Shawangunk Mountains. Image Credit: Mwanner at English Wikipedia. Used under a Creative Commons Attribution-Share Alike 3.0 International license.



palisades3 Hudson_River Salim Virji 2.0 generic.jpg
*The Palisades that rise up along the sides of the Hudson River, in New York. Image credit: Salim Virji, used under a Creative Commons 2.0 Generic license. Wikimedia Commons. *



The rock formation of the Palisades along the Hudson River in New York, offer a geological map for the glacial events that helped to shape the cliffs. At the summit, striations may be seen that reveal the movement of glaciers. The glaciers carried along debris, that cut into the sides of the cliffs. The palisades themselves had formed much earlier, more than 120,000 millions ago, when the continents split apart.*



Snedens 3Landing Painting by Robert Knox Sneden 1858 public.jpg
An artist's rendering of the Palisades at Sneden's Landing, on the lower Hudson River. Painting by Robert Knox Sneden, 1858. Public domain. Wikimedia.



Aerial_view_of_the_Hudson_River  Jessica Spengler from Brighton, United Kingdom 2.0 generic.jpg
An aerial view of the Hudson River. Image credit: Jessica Spengeler from Brighton, United Kingdom. Picture is used under a Creative Commons 2.0 generic license.



The Hudson River was formed over millions of years in a series of events that culminated in the retreat of the Wisconsin Ice Sheet, the last glacial event of the last Ice Age. The melting of the glacier filled vast lakes, one of them Lake Hudson. As the glacier retreated further, water from Lake Hudson was released and poured through the Hudson Channel to the Atlantic Ocean. It was during this glacial retreat that the islands of New York City were formed. It is believed that the River reached its present level about 6,000 years ago.



Breakneck_Ridge_III Jeffrey Pang from Madison, NJ, USA 2.0 generic.jpg
A view of the Hudson River from the Hudson Highlands. Image credit: Jeffrey Pang from Madison, NJ, USA. Picture used under a Creative Commons 2.0 Generic license.



Shawangunk_Ridge,_NY Jarek Tuszyński 3.0.jpg
Shawangunk Ridge visible from Skytop cliff tower near near Mohonk Mountain. The picture credit: Jarek Tuszynski, on Wikimedia Commons. Used under a Creative Commons Attribution-Share Alike 3.0 International license.



Locally, the Shawangunk Mountains are called the Gunks. The Shawangunks are actually part of the long Appalachian chain that runs north to south in eastern United States. In New Jersey the chain is called the Kittatinny Mountains. In Pennsylvania the chain is called the Blue Mountain. Geologists believe the Appalachians were formed by tectonic collisions. Before these collisions, the Appalachian area was similar to the Atlantic coastal plain today. Colliding plates put pressure on the land and created the mountains. This may have happened as long as 480 million years ago.

Authors get paid when people like you upvote their post.
If you enjoyed what you read here, create your account today and start earning FREE STEEM!
Sort Order:  

Your post has been personally reviewed and was considered to be a well written article.
You received a 10.0% upvote since you are not yet a member of geopolis and wrote in the category of "geology".

To read more about us and what we do, click here.
https://steemit.com/geopolis/@geopolis/geopolis-the-community-for-global-sciences-update-4

·

Thank you very, very much.

Get me out of the city, and get me into some nature!

·

:)

These mountains look amazing.. really makes me want to explore New York state some more.

·

It is beautiful :)

I grew up in the Hudson valley and spent many enjoyable hours hiking trails near and along the Shawangunk ridge. Thanks for bringing up the good memories!

·

I was a child when my family left. I'm not sure you describe what we did as "hiking". We'd just take off in the morning and spend hours in the forest. It was our backyard. Never get that out of your system. I know what you mean.

·
·

Same here - we weren't close enough to the mountains, but plenty of time spent in the woods and fallow fields by our local apple orchards (never in the orchards themselves, that would be just plain wrong ;) )

Its Cool!

·

Thanks--I grew up there. Loved it.

·
·

Up and fowlling you ! ;)

·
·
·

Thank you! I followed also.