Long Island's Geology 

I was born in Rockville Center in 1943, but even though I don't live on Long Island now, I did live there for 34 years and have a lot of memories, especially about Jones Beach with are really nice.😊

Well done presentation.

My family lived with two enormous Glacial Erratics butted up against each other (great to play on) that was in Weston, CT. The next property was located in Westport, CT that had a large Erratic Bounder; supposedly the local native community called 'The Treshing Rock', also fun to hang out on!

Sat on my biggest erratic in Newfoundland. Probably didn't move much at all but great views!😁👍🌿

Thanks for posting this very informative lecture on Long Island glacial features! So useful for earth science educators like myself. It really clears up some questions I had on things (such as why West Hills/Dix Hills exist, tunnel valleys, etc.) and also clears up some misconceptions I had (such as that the edge of the ice at one point did reach farther than the Ronkonkoma moraine!) Dr. Bennington is a great teacher who I have taken trips with before and is so helpful and supportive of efforts to make earth science teachers better educated about their subject.

Man, I never realized I went to school on a hill when I took that bus from Merrick to Mineola. At least it was true when I told my kids I had to go uphill to school every day.

As soon as I heard your voice I was like “wait a minute, I just watched another video of this same fella talking about Long Island’s geography!” Good sir if you ever feel like entertaining the hyperfixation of a local Rockhound, PLEASE come out with me to Lloyd Harbor and Fisherman’s Point at Caumsett and tell me all about the different rocks and geology there! I eat this stuff up!

Worth a viewing. We have glacial erratic in our backyard on Cornell Street that was removed from our basement during construction.

Very interesting presentation.

This is awesome !! thank you great lecture!

I honestly believe the southern valley and kettles of Connecticut were formed At the same time glaciers receded from the north resulting fluctuation of sea levels The Trenches of plates have widened resulting in overall lower levels today.

Very informative! I’ve lived on Long Island almost my whole life now (Northport during the 80s and now Shelter Island since 1990). I’ve always known there were erratics here and kettles but never knew the extent of the moraines. I’ve been rock-hounding here on Shelter Island for the last month or so and have collected lots of quartzite, granite, schist, gneiss, various sedimentaries and a few others. I’m hoping to find perhaps rarer rocks/minerals or at least sone decent crystals of sorts. I’m curious as to what may’ve been brought down from up north and am hoping someone has done studies on what rocks are found here.

Interesting video on how Long Island was formed by tens of thousands of years of climate change.

How deep is Lake Ronkonkoma?

Thank you!

Long Island is a geological time stamp of the greatest extent of the Laurentide Ice Sheet, and then the return of the ice from the Younger Dryas period, likely caused by an impact event. South Fork before; North Fork after.

The barrier islands to the south seem to have been neglected in this lecture.

A lot different than the glacial history in Washington that Nick Zentner talks about.

He made a point about glaciers not moving back and forth " like a pick up truck " then at 11 minutes in, he completely contradicts himself. So if a glacier moved south as he suggests what about the depth of Long Island sound ? Was the sound filled? Did the glacier glide across it ? Or Did the glacier drop down and up ? lol yes he knows little .

2:57 oh brother….😩

Someone is chewing crunchy stuff near the mic.

N J 肯定有 SAT補習班或學校。應 fit your son.

Visit the glaciers "before they all disappear" ........? Coming from a geologist talking about the result of climate change and receding glaciers from thousands of years ago...SMH.

Before they all melt away? They will be back for sure and nothing is going to stop them Lol.

u would think he would come in early, run the film to the empty auditorium to make sure it runs, or fix what is wrong, before starting his lecture and then find out about the glitch and blah.... baaaaad planing, "ice ice baby", bad planning