Imaging of boron in altered mantle rocks illuminates progressive serpentinisation episodes | Geochemical Perspectives Letters
We have more recent papers that show the initial uplift was triggered by fluids sourced from the Cyprus subducting slab. Followed by meteoric waters.
See:
doi.org/10.1016/j.ch...
www.geochemicalperspectivesletters.org/article2407/
doi.org/10.1016/j.gc...
24.01.2026 09:08 โ ๐ 1 ๐ 1 ๐ฌ 1 ๐ 0
UK IODP Newsletter 2025 Issue 1 January
Our January Newsletter is out now! Hear from @geochemgroup.bsky.social Postgraduate Research Medal winner @aledevans.bsky.social on first results from Exp 390 & 393. Also: publications & opportunities from & for the scientific ocean drilling community
issuu.com/uk-iodp/docs...
@ecord.bsky.social
27.01.2025 20:53 โ ๐ 5 ๐ 1 ๐ฌ 0 ๐ 1
Elemental mapping image of a calcium carbonate vein showing multiple events of precipitation and fracturing.
Histogram Plot showing increasing vein width distributions and strain, but approximately constant vein density with crustal age.
Ocean crustal veins are wider with increasing crustal age, but the number of veins remains approximately constant.
Plot of ocean heat flow data with crustal age showing that the termination of the global heat flow anomaly occurs up to 80 million years in the Atlantic and Pacific.
Also, plot of seismic velocities showing a sudden increase within 8 million years of crustal formation. Increase in velocities due to filling of ocean crustal fractures by precipitation of secondary minerals. Heat flow and seismic data disagree about the duration of chemical exchange in ocean crust. Our results reconcile this long-standing discrepancy.
Ocean plate cooling model showing the change in cumulative temperature with crustal age. Also a plot of modelled strain, observed strain from drill cores, and atmospheric CO2.
Also, plot showing discrepancy between the model and observations broadly fits the changing trend of atmospheric CO2 over the last 180 million years.
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๐จ New Paper Alert ๐จ
It turns out ocean crustal veins are dynamic features rather than passively filled fractures.
They record the changing balance between ocean plate cooling, ocean chemistry, and the age of ocean crust.
#ScientificOceanDrilling
www.sciencedirect.com/science/arti...
22.11.2024 10:45 โ ๐ 6 ๐ 0 ๐ฌ 0 ๐ 1
New in #GPLetters by Evans et al. "Multiple serpentinisation events illuminated by in situ boron elemental mapping & stable isotope systematics". Read more: geochemicalperspectivesletters.org/article2407/
@aledevans.bsky.social
@thefosterlab.bsky.social
24.02.2024 04:47 โ ๐ 4 ๐ 2 ๐ฌ 0 ๐ 0
New paper alert from
@aledevans.bsky.social and others using laser ablation ICPMS imaging and in situ d11B analyses to better understand the progressive serpentinisation of the Troodos Ophiolite geochemicalperspectivesletters.org/article2407/ ๐งชโ๏ธ
23.02.2024 15:56 โ ๐ 5 ๐ 1 ๐ฌ 0 ๐ 0
