Ah, yes. Botroidal AND amygdaloidal. Unless that's just snow.
And oo! oo! Oolites! Musn't forget oolites! Stay tuned.
As for pahoehoe, I find it referred to as ropey or porridgelike. I don't do those even in Hawaii. And aa'aa? I'd suspect you made that one up, but I know better.
Aa aa is, of course, a different lava morphology from pahoehoe. More lumpy and jagged, according to Miss Connie V. when she was a research assistant at the Arkansas Earthquake Center back in '91. She was quite giggly with the terms, I assure you.
And an expert in chert, I'm given to understand. But would she know of pahoe-aa-hoe-aa? It is a jaggedly ropey lava, like lumpy porridge. Classically clastic.
Supercooled botryoidal pyroclast,
Yes, well, one pyroclast's botroid is another pyroclast's amygdaloid. Touche' mon frer!
ReplyDeleteJust as long as you keep the oolites at bay and don't even mention aa'aa or pahoehoe.
I gotta go.
Ah, yes. Botroidal AND amygdaloidal. Unless that's just snow.
ReplyDeleteAnd oo! oo! Oolites! Musn't forget oolites! Stay tuned.
As for pahoehoe, I find it referred to as ropey or porridgelike. I don't do those even in Hawaii. And aa'aa? I'd suspect you made that one up, but I know better.
Aa aa is, of course, a different lava morphology from pahoehoe. More lumpy and jagged, according to Miss Connie V. when she was a research assistant at the Arkansas Earthquake Center back in '91. She was quite giggly with the terms, I assure you.
ReplyDeleteAnd an expert in chert, I'm given to understand. But would she know of pahoe-aa-hoe-aa? It is a jaggedly ropey lava, like lumpy porridge. Classically clastic.
ReplyDelete