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- Álvaro, J. JavierGeosciences Institute (IGEO) (author)
Submarine metalliferous carbonate mounds in the Cambrian of the Baltoscandian Basin induced by vent networks and water column stratification
- Article/chapterEnglish2022
Publisher, publication year, extent ...
- 2022-05-19
- Springer Nature,2022
- electronicrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:uu-474676
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-474676URI
- https://doi.org/10.1038/s41598-022-12379-yDOI
- https://lup.lub.lu.se/record/d042cf42-8c46-4d69-9a5c-ad3d9b43233dURI
Supplementary language notes
- Language:English
- Summary in:English
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- SwePubSwePub
Classification
Notes
- Two massive precipitation events of polymetallic ore deposits, encrusted by a mixture of authigenic carbonates, are documented from the Cambrian of the semi-enclosed Baltoscandian Basin. δ34S (‒9.33 to ‒2.08‰) and δ33S (‒4.75 to ‒1.06‰) values from the basal sulphide breccias, sourced from contemporaneous Pb–Zn–Fe-bearing vein stockworks, reflect sulphide derived from both microbial and abiotic sulphate reduction. Submarine metalliferous deposits were triggered by non-buoyant hydrothermal plumes: plumes of buoyant fluid were trapped by water column stratification because their buoyancy with respect to the environment reversed, fluids became heavier than their surroundings and gravitational forces brought them to a halt, spreading out laterally from originating vents and resulting in the lateral dispersion of effluents and sulphide particle settling. Subsequently, polymetallic exhalites were sealed by carbonate crusts displaying three generations of ikaite-to-aragonite palisade crystals, now recrystallized to calcite and subsidiary vaterite. Th of fluid inclusions in early calcite crystals, ranging from 65 to 78 ºC, provide minimum entrapment temperatures for carbonate precipitation and early recrystallization. δ13Ccarb (‒1.1 to + 1.6‰) and δ18Ocarb (‒7.6 to ‒6.5‰) values are higher than those preserved in contemporaneous glendonite concretions (‒8.5 to ‒4.7‰ and ‒12.4 to ‒9.1‰, respectively) embedded in kerogenous shales, the latter related to thermal degradation of organic matter. Hydrothermal discharges graded from highly reduced, acidic, metalliferous, and hot (~ 150 ºC) to slightly alkaline, calcium-rich and warm (< 100 ºC), controlling the precipitation of authigenic carbonates.
Subject headings and genre
- NATURVETENSKAP Geovetenskap och miljövetenskap Annan geovetenskap och miljövetenskap hsv//swe
- NATURAL SCIENCES Earth and Related Environmental Sciences Other Earth and Related Environmental Sciences hsv//eng
- NATURVETENSKAP Geovetenskap och miljövetenskap Geokemi hsv//swe
- NATURAL SCIENCES Earth and Related Environmental Sciences Geochemistry hsv//eng
- Earth Science with specialization in Historical Geology and Palaeontology
- Geovetenskap med inriktning mot historisk geologi och paleontologi
Added entries (persons, corporate bodies, meetings, titles ...)
- Holmer, Lars E.,1960-Uppsala University,Uppsala universitet,Paleobiologi,State Key Laboratory of Continental Dynamics, Shaanxi Key Laboratory of Early Life and Environments, Department of Geology, Northwest University, Xi’an, 710069, China(Swepub:uu)larholme (author)
- Shen, YananUniversity of Science and Technology of China (author)
- Popov, Leonid E.National Museum Wales (author)
- Ghobadi Pour, MansourehNational Museum Wales (author)
- Zhang, ZhifeiNorthwest University (China) (author)
- Zhang, ZhiliangNorthwest University (China) (author)
- Ahlberg, PerLund University,Lunds universitet,Berggrundsgeologi,Geologiska institutionen,Naturvetenskapliga fakulteten,Lithosphere and Biosphere Science,Department of Geology,Faculty of Science(Swepub:lu)geol-pah (author)
- Bauert, HeikkiGeological Survey of Estonia (author)
- González-Acebrón, LauraComplutense University of Madrid (author)
- Geosciences Institute (IGEO)Paleobiologi (creator_code:org_t)
Related titles
- In:Scientific Reports: Springer Nature12:12045-2322
Internet link
- https://doi.org/10.1038/s41598-022-12379-yFulltext
- https://uu.diva-portal.org/smash/get/diva2:1659467/FULLTEXT01.pdffulltext:print
- http://dx.doi.org/10.1038/s41598-022-12379-yFULLTEXT
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-474676
- https://doi.org/10.1038/s41598-022-12379-y
- https://lup.lub.lu.se/record/d042cf42-8c46-4d69-9a5c-ad3d9b43233d
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