Ice Age Arizona: Plants, animals, & people
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- Опубліковано 1 сер 2024
- Join NHI and archaeologist Dick Ryan to learn about Arizona's glacial environment, as well as the animals and humans it supported during the Ice Age.
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What was Arizona like during the Ice Age? The glacial environment was cool and moist, and nothing like the hot, dry desert climate experienced in parts of the state today. It was so much wetter that Meteor Crater held a deep, permanent freshwater lake for 40,000 years. Ice Age Arizona was home to an array of animals now referred to as the Rancholabrean megafauna, named after the Rancho La Brea fossil site, AKA the La Brea tar pits. The most awesome predator of this time was not a big cat, it was a giant Ice Age bear, Arctodus simus. Early humans occurred alongside the Ice Age animals. In fact, Arizona has six sites where the remains of the Columbian Mammoth - an extinct Ice Age elephant - are associated with human artifacts.
Dick Ryan worked as a field archaeologist in the American Southwest for ten years. He received a Master’s in Archaeology from NAU in 1983, at age 39. As an archaeologist, he worked for Desert Research Institute, the Museum of Northern Arizona, contracted with a number of archaeology companies, and was a government archaeologist with Prescott National Forest in 1987 and 1988. His main area of interest is Ice Age mammoth hunters of the Paleoindian Period. Dick has published in The Journal of the Southwest, The Nevada Archaeologist, Journal of California and Great Basin Anthropology, and Current Research in the Pleistocene. Recently, Dick has become one of the major promoters of Mata Ortiz Pottery in the U.S., while maintaining an active interest in archaeology.
0:00 Ice Age Arizona
1:11:31 Q&A - Наука та технологія
This lecture came up in my feed. This was the only lecture along this line that I’ve heard. I really enjoyed it.
Thank you. Please share with other!
Dr Ryan is a fabulous presenter! I have never heard a lecturer do as great of a job at explaining ice-age finds, why they are significant, and how that relates to the environment and early humans.
I am from Cochise county and have found ice age animal fossils and ice age artifacts
Wow! That is exciting. I hope you get a chance to share the location of your finds with archeologists.
Contact local tribes
I'd like to know more about the ice age fossils and artifacts you found. . . !
Dick Ryan
Outstanding presentation, thank you!
Delightful and open-minded presentation! Dick Ryan is fully-informed and skilled at showing comparative photos and illustrations.
These are exciting times for North American archaeology. Many thanks!
Hmm, cooler, moister environment, what’s not to like? Let’s go back to the Ice Age!
I often dream of what it would be like to have lived back then here in AZ. If I find a time machine I’m definitely going back 18,000 years ago and see if I can get in on a mammoth hunt.
I'd go back even further! I would like to see snowball earth and be able to land on the surface and study it. Also verify the giant-impact theory and maybe witness the impact and the moon's slow birth. Explore the continent of Pangea and so much more. I wouldn't use it for personal gain, only knowledge.
@@ryanreedgibson Love those ideas
The lecture was great. Thank you so much
Doc, I am watching this, and smiling. I am working on a paper/book about the end of the Pleistocene and about the mammoths. Thanks for the info on the climate in AZ then. It fits wonderfully with my hypothesis of what happened between then and now. I have >100 lines of evidence. Yours adds to that.
I saw a Columbian mammoth reconstructed in a museum in Mexico. Holy crap was that TALL! I have ridden elephants. No comparison. I am very familiar w/ the Clovis story. Clovis First was bad science, led by the Smithsonian. Shame on them. Clovis was not a culture; it was a technology, passed around. More in the eastern US area. Gorgeous points. Right now focused on the Great Lakes area. Also Europe. The climate was like AZ in Oslo, Ireland, Baltic. Miami, Brownsville. Are you aware of the 200+ mammoths at the new Mexico City airport? Times Square for Columbian mammoths.
Yeah, AZ mammoths and people had a rough time when things changed. That was at the Younger Dryas. But great climate before that. Believe me, there was no ice age then. Something else.
"The misconception arises from a fact." i like that
Funny!
Such a great presentation.
Excellent. Even mentioning the Younger-Dryas Impact event shows an open mind. I learned new details that inform the Pleistocene Lake Lahontan videos I make from my airplane.
Excellent!
Absolutely fantastic lecture, thanks so much for sharing!
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Woodland muskox, 38:35. Super cool!
Loved it!
Excellent
That was extremely illuminating. Thankyou
I wish this was a book I'd buy it great video
Please post more kectures if you can!
Also saddened that this doesn't have more views or comments!😢
Thank you and share, share, share!
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Amazing information
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Amazing information. Absolutely fantastic lecture, thanks so much for sharing!.
Glad you enjoyed it!
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Wonderful talk! Thanks so much from New Mexico.
From what I understand, due to much of Great Basin being full of water, most of the intermontane West/SW surrounding it was far more wooded and vegetated than it is today, making the entire region perfect for the First Peoples of the Americas to thrive in, before expanding south and east as the climate changed at the end of the last glacial.
Is there a link to the lichen talk that you mentioned at the beginning? I've always adored lichen, and being a Tucson native I was very intrigued to hear that more than a third of the species in North America are local to me.
Yes! Here it is: ua-cam.com/video/iZF6DkYk1aA/v-deo.html
Thanks for watching! Please share our videos with your friends. Here is the link to the lichen talk. ua-cam.com/video/iZF6DkYk1aA/v-deo.html
Thank you so much!
So were the elephants eating mainly grass or trees?
So glad to find this, it has helped my curiosity about what New Mexico (where I’m from) would have looked like. New Mexico has somewhat higher mountains and higher deserts than Arizona but is similar otherwise.
The history of the US will go back much further yet 30,000 years is my guess. Than forty thousand in South America.
Sorry the history of the US cannot be older than 1776 CE.
@@headlessspaceman5681 I think he meant the North American continent.
Research "The Carolina Bays" for more evidence of impact the hypothesis.
A very interesting presentation. Do you have any other events planned for the future?
Yes! You can see our calendar of upcoming lectures and field trips at naturalhistoryinstitute.org/events/month/ and you can also browse recordings of past lectures at www.youtube.com/@NaturalHistoryInstitute/streams -- Thank you for your interest!
32:13 😂good luck with that.
Are those big boulders in Payson AZ glacial erratics?
No they're just resistant to erosion so they got exposed. Glaciers in Arizona likely never existed below 9k feet.
Hasn't been chilly here for a few hundred years, but its my personal hell, i mean home. Life then or now is a hell of a existence to live here. Too dam cold then too dam hot much like death valley.
Currently it was 114 yesterday and low was 65, before sunrise, bi polar weather is normal and now with monsoon time, it's unbearable with swamp cooling, thank God I've got solar, enough and with storage, enough to run ac all day and night❤
Thank you SO MUCH for your comments towards the very end on the ills of capitalism. People need to realize how "antiquated" that socioeconomic arrangement is now. A better world is possible, and we Humans proved it tens of thousands of years ago (our ancestors' lifestyles and practices and BELIEFS updated to modern standards, of course)
I was under the impression of direwolf wasn't a wolf not k9
Recent research indicates the direwolf was a canine, but not a wolf. See Scientific American link below.
www.scientificamerican.com/article/dire-wolves-were-not-really-wolves-new-genetic-clues-reveal/#:~:text=But%20a%20new%20study%20of,have%20captured%20modern%20humans'%20imagination.
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I always believed in beringia butbi also believe they came from polynesia as well
Florida was twice as big 40k years ago. Florida was gone 1M years ago.
Going to strongly disagree with his claims about the diet. The large majority of pre-agricultural societies ate almost entirely fat and meat based diets. They only ate plant material as survival food when they could not secure a kill.
It is only a very few isolated ancient societies that ate a diet of majority plant material, and those isolated peoples show all manner of diet related diseases and abnormalities. Stunted growth, poorly formed bones, tooth decay and teeth ground down, overall shorter height, higher rates of cancers and heart disease, etc.
Dr. Michael Eades has several very good lectures about this.
The last pole shift and magnetic reversal was the reason for the mass extinction. That and a meteor impact contributed.
Can you provide citation for this claim? It sounds like an oil company's research to deny climate change being caused by human activity. Magnetic reversals are not instantaneous; they happen over a period of hundreds to thousands of years, though recent research indicates that at least one reversal could have taken place over a period of one year.
Dr. Ryan grossly exaggerates climate differences. The Sonoran Desert is both a subtropical anticyclone desert and a rain shadow desert, and the Coast Ranges were still there. Arizona was dry during that period for the same reason Nevada, Utah and eastern Oregon are dry today. Yes, there was Sonoran Desert vegetation. Creosotes have been found to be collective organisms as old as 12,000 years. Given that the saguaro cactus grows nowhere else in the world but the southwest USA and northwest Mexico, it would have become extinct if the climate had changed that much. Yes, I'm sure it existed in far southwest Arizona during the Pleistocene. Also intensity of sunlight is a much better predictor of evaporation rates than temperature. Probably Phoenix often had triple digit heat back then. After all California's Central Valley still does.
Are you at NAU?
Oh, yavapai. Made it to where you say Prescott. Woot Northern Az
Watch the video IS GENESIS HISTORY
Great levture. I hate the over hunting theory. Ice age mammals died out when ice age ended. Duh.