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Andy Baker · @Andbaker

568 followers · 926 posts · Server aus.social

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Here's the longer-term context for the current drying in the furthest SW of #Australia.

The #stalagmite record goes back 800 years into the past. And at no time do we see anything similar to the change in oxygen isotope composition that has occurred in recent decades.

This suggests that the current drying trend is unprecedented in the last 800 years.

The #cave record shows that less #water is moving to the #groundwater by fast-flow, or preferential-flow routes. And that is leading to the observed decline in groundwater levels.

#climatechange #climate #environment #science #research #geology

#australia #stalagmite #cave #water #groundwater #climatechange #climate #environment #science #research #geology

Last updated 1 year ago

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Hari Tulsidas :verified: · @haritulsidas

86 followers · 648 posts · Server masto.ai

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A new study has found evidence of prolonged droughts in the Himalayas that may have contributed to the decline of the Indus Civilization. The study analyzed a stalagmite from a cave and reconstructed the rainfall patterns over 4,000 years ago. The study found three long-lasting droughts that coincided with the reorganization and depopulation of the Indus megacities.

#indus #drought #stalagmite

https://phys.org/news/2023-04-prolonged-droughts-indus-megacities.html

#indus #drought #stalagmite

Last updated 1 year ago

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Paul Dyson · @pauldyson

70 followers · 146 posts · Server mastodon.social

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I don’t know what to call these. #stalagmite #icicles maybe? Vertically ascending icicles formed on a tree branch in the #NorthTyne river as the fast moving water washed over them and a tiny amount freezes each time.

#stalagmite #icicles #northtyne

Last updated 2 years ago

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Real_JamesCain · @real_jamescain

227 followers · 914 posts · Server techhub.social

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#Stalagmite formation dubbed “The Twins”
#OnondagaCave Leasburg, Missouri
#Caves

#stalagmite #onondagacave #caves

Last updated 2 years ago

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@Om* · @atomjack

1255 followers · 13282 posts · Server mastodon.cloud

a rock with a cave inside it

The above is a chrysocolla, a mixture of silicate and copper compounds. Each “stalagmite” contains a bunch of tiny crystals, usually microscopic by themselves.

#chrysocolla #silicon #copper #compounds #stalagmite #crystals #rock #cave #inside

#stalagmite #chrysocolla #silicon #copper #crystals #cave #inside #rock

Last updated 7 years ago

Original post

@Om* · @atomjack

1277 followers · 13323 posts · Server mastodon.cloud

a rock with a cave inside it

The above is a chrysocolla, a mixture of silicate and copper compounds. Each “stalagmite” contains a bunch of tiny crystals, usually microscopic by themselves.

#chrysocolla #silicon #copper #compounds #stalagmite #crystals #rock #cave #inside