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Rapid shifting of a deep magmatic source at Fagradalsfjall volcano, Iceland
nature.com ^ | 14 September 2022

Posted on 09/15/2022 4:24:01 PM PDT by BenLurkin

Recent Icelandic rifting events have illuminated the roles of centralized crustal magma reservoirs and lateral magma transport, important characteristics of mid-ocean ridge magmatism. A consequence of such shallow crustal processing of magmas is the overprinting of signatures that trace the origin, evolution and transport of melts in the uppermost mantle and lowermost crust.

Here we present unique insights into processes occurring in this zone from integrated petrologic and geochemical studies of the 2021 Fagradalsfjall eruption on the Reykjanes Peninsula in Iceland.

Geochemical analyses of basalts erupted during the first 50 days of the eruption, combined with associated gas emissions, reveal direct sourcing from a near-Moho magma storage zone. Geochemical proxies, which signify different mantle compositions and melting conditions, changed at a rate unparalleled for individual basaltic eruptions globally. Initially, the erupted lava was dominated by melts sourced from the shallowest mantle but over the following three weeks became increasingly dominated by magmas generated at a greater depth.

This exceptionally rapid trend in erupted compositions provides an unprecedented temporal record of magma mixing that filters the mantle signal, consistent with processing in near-Moho melt lenses containing 107–108 m3 of basaltic magma. Exposing previously inaccessible parts of this key magma processing zone to near-real-time investigations provides new insights into the timescales and operational mode of basaltic magma systems.


(Excerpt) Read more at nature.com ...


TOPICS: Miscellaneous; Science
KEYWORDS: eruption; fagradalsfjall; geology; iceland; puns; reykjanespeninsula; verypunny; volcano; volcanoes
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To: Celtic Conservative; BipolarBob; PTBAA; logi_cal869; Redcitizen; EinNYC

I would join in if I were feeling boulder.


21 posted on 09/15/2022 8:14:26 PM PDT by SunkenCiv (Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
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To: Wally_Kalbacken

Sounds like you’re in for some stuff love.


22 posted on 09/15/2022 8:16:39 PM PDT by piasa (Attitude adjustments offered here free of charge)
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To: Wally_Kalbacken

Sounds like you’re in for some tuff love.


23 posted on 09/15/2022 8:16:46 PM PDT by piasa (Attitude adjustments offered here free of charge)
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To: SunkenCiv

I lava good thread.


24 posted on 09/15/2022 8:23:30 PM PDT by logi_cal869 (-cynicus the "concern troll" a/o 10/03/2018 /!i!! &@$%&*(@ -)
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To: logi_cal869

It’s great when a thread just floes like this.


25 posted on 09/15/2022 8:26:26 PM PDT by SunkenCiv (Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
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To: piasa

lol


26 posted on 09/15/2022 8:34:34 PM PDT by SunkenCiv (Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
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...with associated gas emissions...

27 posted on 09/15/2022 8:35:21 PM PDT by SunkenCiv (Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
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To: SunkenCiv

Don’t go getting all sedimentary on me!

CC


28 posted on 09/15/2022 8:45:12 PM PDT by Celtic Conservative (My cats are more amusing than 200 channels worth of TV.)
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To: SunkenCiv

Magma day.


29 posted on 09/15/2022 9:15:53 PM PDT by logi_cal869 (-cynicus the "concern troll" a/o 10/03/2018 /!i!! &@$%&*(@ -)
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To: logi_cal869

30 posted on 09/15/2022 9:16:44 PM PDT by dfwgator (Endut! Hoch Hech!)
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To: BenLurkin

Ruh roh update...

https://www.express.co.uk/news/world/1787955/massive-volcano-iceland-erupt-earthquakes


31 posted on 07/05/2023 6:38:02 PM PDT by mewzilla (We will never restore the republic if we don't first secure the ballot box.)
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To: mewzilla

https://icelandmonitor.mbl.is/news/news/2023/07/05/eruption_could_be_sooner_than_later/

https://grapevine.is/news/2023/07/05/next-eruption-looms-just-hours-or-days-away/


32 posted on 07/05/2023 6:40:40 PM PDT by mewzilla (We will never restore the republic if we don't first secure the ballot box.)
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To: BenLurkin

And I am sure it was caused by my watering the garden.


33 posted on 07/05/2023 6:41:35 PM PDT by Harmless Teddy Bear (Follow the money. Even if it leads you to someplace horrible it will still lead you to the truth.)
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To: voicereason

You should caldera your family to make sure they’re all right


34 posted on 07/05/2023 6:48:47 PM PDT by shotgun
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To: mewzilla
It's time for this volcano to fissure cut bait.

-PJ

35 posted on 07/05/2023 7:00:53 PM PDT by Political Junkie Too ( * LAAP = Left-wing Activist Agitprop Press (formerly known as the MSM))
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To: Political Junkie Too

Lahar har har har!

😁


36 posted on 07/05/2023 7:10:59 PM PDT by mewzilla (We will never restore the republic if we don't first secure the ballot box.)
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To: mewzilla

Update....

https://www.icelandreview.com/news/fagradalsfjall-update-quakes-continue-eruption-likely/


37 posted on 07/06/2023 9:08:13 AM PDT by mewzilla (We will never restore the republic if we don't first secure the ballot box.)
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To: mewzilla

https://icelandmonitor.mbl.is/news/news/2023/07/06/smoke_seen_rising_from_meradalir_could_be_because_o/


38 posted on 07/06/2023 9:11:10 AM PDT by mewzilla (We will never restore the republic if we don't first secure the ballot box.)
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To: BenLurkin

Update...

https://www.icelandreview.com/news/shallower-quakes-seismic-activity-similar-to-2022-eruption/


39 posted on 07/07/2023 9:06:55 AM PDT by mewzilla (We will never restore the republic if we don't first secure the ballot box.)
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To: BenLurkin

40 posted on 07/07/2023 9:10:32 AM PDT by dfwgator (Endut! Hoch Hech!)
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