Pillow Basalt (Lavas) and Palagonite. Result of lava flowing into water
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- čas přidán 15. 05. 2013
- Geologist explains basaltic pillow lava formation (pillow basalt). Expand description for more details about pillow lavas or visit HUGEfloods.com Use High-Definition (HD) option to improve video quality. Pillow lavas form when basaltic lava encounters water. Active pillows have been video recorded in Hawaii as the ongoing Kilauea eruption sends active basalt lava flows into the Pacific Ocean. In continental settings, pillows are formed when flood basalts bury landscapes dominated by large freshwater lakes and streams. The Columbia River Basalt Group of Washington and Oregon (USA) is a stack of more than 300 individual lava flows. The flows issued forth from deep fissures that began forming 17 million years ago in southeast Washington and northeast Oregon. Some of the flows have well-developed pillow structures in the basal sections - which proves the existence of lakes between eruptions. Thousands of years are estimated between eruptions of basalt lava from the fissures.
This episode begins with Nick standing in Sand Hollow (46.93049 -119.95038) at one of the region's most impressive Pillow Basalt road cuts - where Washington Route 26 begins its climb east out of the Columbia River Gorge near Vantage, WA. The Ginkgo and Sand Hollow basalt flows are featured - 15 million year old lavas. Lake Vantage existed 15 million years ago.
The episode then switches to Nick at the mouth of Potholes Coulee (47.15033 -119.98147) southeast of Quincy, WA. Details within a pillow zone exposed by the Ice Age Floods are studied. Palagonite between the pillows proves to be a collection of small, angular blocks of volcanic glass (obsidian) which implies sudden, explosive events as the 2,000 degree lava encounters lake water. Petrified logs on display in nearby Ginkgo Petrified Forest State Park have all been found within the palagonite zone in the base of the Ginkgo Flow. The water-logged logs escaped the incinerator of the Ginkgo Flow - and eventually became petrified as silica from the lava soaked into the wood.
Filmed in November, 2012.
Episode written by Nick Zentner and Tom Foster.
Video, Sound, & Editing: Tom Foster
Binge-watching your videos (yeah, even the 50 min recorded class) after visiting Grand Coulee over the weekend. What a beautiful place! Can’t get enough of those rock mountains and buttes. One of the must-see places in PNW. Thank you for these videos.
So first I thank you for assuming I am young! I accidentally stumbled on your videos and lectures in my google feed. I just want to thank you for making all of the earth forms of time make sense and for making millions of years of history come to life so succintly! I have not veen able to walk the trails you have taken me on but I am facinate by the scenery I saw through the windows of the semi truck I trained in as my mentor trained me to drive from the ohio valley to the west coast and back again. Thanks again. I now understand so much better what created the amazing formations and voids that are so picturesque. The mesas, plateaus, valleys, and coolees tell amazing stories of how our earth has become and is still becoming. Your enthusiasm is wonderfully infectious.
This series from hugefloods is great fun. Thanks!
Nicks live streams are going to make all his previous videos more popular. I didn't know he played guitar and sang. A man of many talents. As a guitar player myself, extra cudos to Nick.
Thanks for the note, Liam! Good luck with your studies...
Very interesting I enjoyed your narration and content. Thank you sir!
Great video
Excellent Presentation! I’m subscribing !
Great.
Super cool information on the pillows man. Never thought of them as tubes.
Nice to hear. Thanks.
>^..^< All thanks to modern underwater photography and human breathing/exploration technology.......
Thanks for watching, Skeptical One. If you give me a nearby town...I can look up some geologic maps and try to help. Am craving a Butterfinger now!
I have a Palagonite deposit that I like to visit. Inside what appears to be parts of trees, I've found fairly large (larger than my fist) black, glassy objects. Since they were inside of the old trees, is it more likely to be some type of Opal that formed later, rather than volcanic glass?
I would like to see one of you very informative videos about malhuer cave formation and the ancient riverbed that is just a few miles west of the caves.the cave was an ancient river and lava flowed over it and made a huge lava tube with a lake in it about 2\3 of a mile or so back.
+tom bidwell Have never been there. Thanks for the tip.
Sure,thanks. The outcrop I see is on State Rt4 just a few miles south of the town of WhiteHall NY. I think this technically puts it just outside the official park boundaries,but just barely.
Love your videos. We have rocks on our property that were uncovered before building our house . They are almost perfectly round and vary in size up to 2-3 feet across. They are nestled together looking al
most like eggs in a nest. Over the years being since being uncovered, they have started to peel and crumble layer by layer, the layers being about 1/4 inch thick. I can peel them with my fingers. But in the center is a hard core about the size of a baseball. I've always believed they are some sort of lava deposit, but I would really like to know for sure. Thanks
Thanks for watching. Please send me a few photos and your location. nick@geology.cwu.edu I'll try to help solve your mystery.
Best videos on CZcams. Everyone should see these. "Hello young people", makes my day. Probably because I'm 40.
Nick,I love the videos. I'm sure you probably can't help me,but I live near the Adirondack Mountains,and just inside the southern entrance to the park there is a road cut and there is a a thin layer (about 6 feet) high of a rock I can't identify. It's yellow,super brittle and sparkly. It almost looks like the inside of a Butterfinger candy bar,but with sparkles added to it. Any idea what it might be?
Confused on this one point. "Hot vs cold means bust up that rock" ... But it wasn't rock at the time, it was lake water that the lava flowed into. Didn't the rock between the pillows come long after the lava flowed and the lake deposited more sediment? Thanks for the great video!
What makes the orange color?
I have some pics and video of what I think is Lava contact with water in the Lake Mead Recreation Area. Does anyone have an interest in viewing such ??
After reading some of the comments, I see we have some interesting biblical skeptics who cannot combine scientific reality with the only book they seem to be able to read. Ha ha so funny. Keep teaching, Nick. I don't believe their preaching. They miss so much only conceiving history in the thousands instead of the true millions of years. And God is so much more mysterious and amazing when combined with scientific facts! Love your work.
ing
Opening and closing songs... are they written by yourself? Cool :)
Yes. Thanks.
That's good one stress an drama from to rocks squish together
Yeah buddy.
My maps and your description don't quite jive, Aaron. I see lots of plutonic igneous rocks in that area....not a typical rock that is yellow/brittle. Maybe a baked, altered zone at a contact with another granite? For a better answer, contact old classmate of mine: Bob Darling at Syracuse. He'll know - he's an expert in that area!
lol
Come visit these places and see for yourself.
15 million years ago? Who observed that? I say it happened in the last 7000 years.
Good to know, Michael. Thanks for weighing in.
you look at its atomic clock, no joke. basalt is basically the purest and heaviest form of lava rock, you dont get this stuff just anywhere, its found in ocean fissures and ocean islands like the entire island chain of Hawaii. when this stuff hardens its the same exact purity as any other basalt that just cooled. but chemicals in it change over time, some take a few years and just need water, others take thousands of years to "evaporate" and other specific chemicals take millions of years and a lot of weight on top of it. but their is a special property that all rocks have, radioactive elements. these things have a shelf life and its extremely precise (some last less than a billionth of a second), elements like uranium have a half-life of 4.5 billion year, so that means it will take 4.5 billion years for a new solid rock to have half its trace uranium decay into lead. so you check how much of this stuff is left and you can reasonably predict when it has happened, so far this method has shown no problems.
Sorry don’t trust anyone with a bow tie
Liar
I've spent 20 years carefully studying these rock pillows - and have read all of the scientific literature done by dozens of geologists over the last century. Rock samples, chemical analysis, field maps, thicknesses of basalt layers, crystal size distribution, mapped vents for each lava flow, etc. The science in this video is based on field data. Interpretations have been developed over the years to best fit the data.
You believe in chemtrails and 911 conspiracy crap, but plain geology is false!? How is the trailer park?
Nick Zentner I’m sorry about and for some people
BULLSHIT.
Who are you kidding lmfao