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+--- Thread: Hawaii's unique volcanoes explained (/showthread.php?tid=19785)
Hawaii's unique volcanoes explained - terracore - 06-09-2018
Apologies if this has already been posted, but I found this video to be a quick and concise explanation of our island chain that stretches to Siberia.
https://www.youtube.com/watch?v=k0tnqPmwWvk
RE: Hawaii's unique volcanoes explained - geochem - 06-09-2018
quote:I like Physics Girl and what she does to popularize science concepts and convey the fun and excitement that a career in science can bring.
Originally posted by terracore
Apologies if this has already been posted, but I found this video to be a quick and concise explanation of our island chain that stretches to Siberia.
https://www.youtube.com/watch?v=k0tnqPmwWvk
But she has some serious errors in this one... The mantle plume doesn't come to the surface - the vast majority of it attaches itself to base of the crust - only a small fraction of the plume actually melts and rises to the surface. The flood basalts are not discharged as a massive explosion - they are, as their name implies, massive outpourings of lava (continuous? episodic? I'm not sure that we know) accompanied by massive discharge of volcanic gases (think Leilani fissures multiplied by 100K) - big time extinction but no explosion a la Yellowstone... She might also have mentioned that the reason the mountain chain ends where it does is because there's the Aleutian trench - the older volcanoes have been subducted along with the crust that they were formed on...
I know, picky, picky - but if you're going to do these things, best to get the concepts straight...
RE: Hawaii's unique volcanoes explained - ElysianWort - 06-09-2018
fyi: this young geologist used the word "viscous" to describe magma. I believe there was a squabble when pbmaise used that word and some other posters were ragging on him because they didn't find it to their suiting.
RE: Hawaii's unique volcanoes explained - glassnumbers - 06-09-2018
I think she's pretty hot, so I'm willing to forgive a few scientifical errors here and there
Aloha
RE: Hawaii's unique volcanoes explained - My 2 cents - 06-09-2018
quote:
Originally posted by ElysianWort
fyi: this young geologist used the word "viscous" to describe magma. I believe there was a squabble when pbmaise used that word and some other posters were ragging on him because they didn't find it to their suiting.
I believe the squabble was simply nit-picking about the spelling, i.e., "viscus" instead of "viscous".
RE: Hawaii's unique volcanoes explained - terracore - 06-09-2018
Well, the word "lava" is actually used in the definition of viscous. I understand the difference between magma and lava but still...
vis·cous
#712;visk#601;s/
adjective
adjective: viscous
having a thick, sticky consistency between solid and liquid; having a high viscosity.
"viscous lava"
synonyms: glutinous, gelatinous, thick, viscid, mucous, mucoid, mucilaginous, gummy, gluey, adhesive, tacky, adherent, treacly, syrupy; technicalviscoelastic;
informalgooey, gloppy
"it's impossible to clean up this viscous substance with water"
RE: Hawaii's unique volcanoes explained - My 2 cents - 06-09-2018
"Informalgooey" - That's a new one for me. I like it. Maybe we should use it instead of "viscous" to avoid further confusion.