Posted on 10/20/2020 9:33:20 PM PDT by BenLurkin
A team of geologists at the University of Houston College of Natural Sciences and Mathematics believes they have found the lost plate in northern Canada by using existing mantle tomography images—similar to a CT scan of the earth's interior. The findings, published in Geological Society of America Bulletin, could help geologists better predict volcanic hazards as well as mineral and hydrocarbon deposits.
"Volcanoes form at plate boundaries, and the more plates you have, the more volcanoes you have," said Jonny Wu, assistant professor of geology in the Department of Earth and Atmospheric Sciences. "Volcanoes also affect climate change. So, when you are trying to model the earth and understand how climate has changed since time, you really want to know how many volcanoes there have been on earth."
Wu and Spencer Fuston, a third-year geology doctoral student, applied a technique developed by the UH Center for Tectonics and Tomography called slab unfolding to reconstruct what tectonic plates in the Pacific Ocean looked like during the early Cenozoic Era. The rigid outermost shell of Earth, or lithosphere, is broken into tectonic plates and geologists have always known there were two plates in the Pacific Ocean at that time called Kula and Farallon. But there has been discussion about a potential third plate, Resurrection, having formed a special type of volcanic belt along Alaska and Washington State.
Using 3-D mapping technology, Fuston applied the slab unfolding technique to the mantle tomography images to pull out the subducted plates before unfolding and stretching them to their original shapes.
(Excerpt) Read more at phys.org ...
Floofy is tip-toeing through the primroses this morning.
Good morning.
The shower has been had, and I’m thinking of playing with the desk contents today, maybe get some stuff tossed and other stuff donated. I can do that no matter how I feel — I just need to be able to move my arms and hands!
Barring any drastic unforeseen mood swings, I should be OK today. I have to go do battle with Walgreen’s and remind them that the last morphine prescription I picked up was on April 14, and maybe that will get them off their backsides about the one that was submitted on May 5th.
And that’s all that’s on the agenda. Running errands wears me out, these days, so it’s no wonder nothing gets done on those days. *sigh* I’m a little breathless, but some days, that’s the norm.
What’s happening the House of Chicklets?
We’re going to the library when it opens. We might go to the hardware store, too. We could use some new blinds for the dining room and more mulch for the garden.
And I need to send some music stuff over to the church music director, who is going to play guitar for the Spanish choir on May 30, when we will be on our way back from the Cradle of Forestry.
Today’s special animal friend is the vampire squid from hell, Vampyroteuthis infernalis. Nah, biologists aren’t trying to be funny or anything. This small cephalopod occupies its own order, Vampyromorphida, making it, technically, neither a squid nor an octopus, but its own thing. This animal grows about one foot long. It occupies a deep sea habitat at 2,000 feet of depth or more in tropical and subtropical oceans. It has sticky arms that allow it to trap and eat micro-organisms and small bits of oceanic debris.
This part of the ocean is called the “aphotic” (no light) level and the Oxygen Minimum Zone or OMZ, where oxygen saturation is about 3%. (The oxygen level near the ocean’s surface is about 36%.) The vampire squid is the only animal known to live and breathe its entire life cycle with this low level of oxygen. To survive in this environment, they have gills with an unusually large surface area. Their blood’s hemocyanin (basically copper-based red blood cells, only they’re blue) binds and transports oxygen with unusual efficiency. Finally, they have an extraordinarily low metabolic rate for their size.
Living in OMZ protects the vampire squid from most predators, which rely on higher oxygen levels. A few large fish and whales are “diving predators,” which enter the OMZ to feed but do not need to breathe there. Vampire squid drift along the deep ocean currents, trailing two long, retractile filaments. These are very sensitive, and when they contact something in the water, the animal investigates it by touch. If a threat is sensed, the animal turns itself inside out, exposing spiny projections on the inside of its arms and the cape which connects the arms. (The cape, especially in specimens that are black in color, is the source of the “vampire squid” name.) If this does not deter the threat, it may eject a cloud of bioluminescent mucus that interferes with the predator’s perception, allowing the squid to “disappear.” This mucus also clings to the predator, making it more vulnerable to something else that wants to eat it.
There’s more, but now we’ll talk about its reproduction. (Because it is so difficult to observe deep-sea animals, some of the following information is speculative, based on what is known about other cephalopods in this environment.) Because of the dearth of nutrients in this environment and their very low metabolism, reproduction is slow. It is believed these animals rarely encounter one another, but if an adult male and female come in contact, perhaps attracted to one another by their bioluminescence, the male will hydraulically implant a spermatophore, which the female will store within her mantle.
After a time, times, and half a time, the female will lay an egg or two. Scientists believe these animals breed multiple times in their lifespan. The developing embryos are nourished by yolk, the production of which takes a huge amount of nutrition for the female. It is reported that she may guard the egg(s) for up to 400 days before tiny, close replicas of the adult hatch. As the hatchlings sloooowly grow, they develop small fins on their heads which they will eventually use for movement; in infancy, they move by jet propulsion. The young squid live at even deeper levels in the ocean than the adults.
Vampire squid are a species of Least Concern, on the assumption that their population is what it always was and nothing much is changing in their environment. The possibility that they have civilization is too weird for even me to contemplate.
Well, gloriosky. I’m writing a letter to Charlie, and you come up with this brilliant article on a creature I never even knew existed. Wow. Thanks!
The wind is up, the sky had a red glow a few minutes ago, and since the sun is soon to come over the mesa, the blinding light will stream into my living room.
The day will be in the low nineties but I’ve found that even here, in temps that seldom hit 100°, people complain about the heat.
She acts like she likes going in (still). She hasn’t been there very often.
We’ll see how she feels this afternoon.
Good morning. Happy Friday!
I hope everything goes smoothly for the dog.
Off to the library!
Best wishes for dog!
She’s probably one of those dogs that doesn’t care where you take her because there are people to pay attention to her. ;o]
And I have to wait before I can head out on my excursion to Walgreen’s...
FS just called to tell me he remembered to wish his Favorite Sister a happy birthday, yesterday. Whoa! What’s up with that? His birthday is coming up, too.
Been to library, been to Walmart. It’s a little cool outside today.
Been to Walgreen’s, mailed Charlie’s letter. The morphine was FINALLY ready! It was only a week late on being refilled. *sheesh*
Test message said the Gabapentin was ready but the morphine was delayed. I had to wait for the Gabapentin to be filled but the morphine was ready. Who programs their computers?
The cheapest possible vendors in south Asia.
I thought it was India?
;o])
I’m cooking some fish that I got out of the freezer the other day. Once it’s cooked, I’m sure it will be eaten. I feel like I should do something else useful, though.
I just got off the phone with AR. I’m still at #2, but if “she” doesn’t want it, then I move to #1. They’re still working on repairs/upgrades for the apartment, so the gal may get tired of waiting. (Hurry up and wait.)
Hopefully, with the increased morphine, I can keep the pain far enough at bay to where I can pack for longer than 30 minutes.
Now, I’m worn out again.
A lot of shops from Eastern Europe are giving the shops in India a real run for their money.
It would be nice if you could move into a place that’s been rehabbed.
Federal law says all apartments have to be “habitable under minimum conditions” meaning they need to have working appliances, the lights and HVAC need to function properly, and in general, a person needs to be comfortable. In other words, when I pay rent, it gives me, by law, “the right to quiet enjoyment.”
The places need to be painted, and no smoking is allowed. Cupboards need to be sturdy, all inner doors must be functioning properly, and windows need to have screens. If the area has high crime, there needs to be a security door at the entrances and if necessary, bars on the windows.
The rest depends on whether it’s for families or seniors. At this point, I just want to move!
That falls into the *face palm* category!
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