Results 41 to 50 of about 334 (140)
Scientific ReportsThis study investigates a rift-related lacustrine slope system characterized by authigenic high-magnesium phyllosilicates (e.g., kerolite-stevensite) and carbonates associated with volcaniclastic deposits.
Sergio Toledo +4 more
doaj +1 more source
The Depositional Record, Volume 11, Issue 1, Page 70-94, February 2025.Mineralogy and texture of diagenetic phases in the Aptian Pre‐Salt Barra Velha Formation are described, quantified and compared by facies and structural setting to understand their spatial and temporal distribution, and to develop predictive concepts for their genesis.
João Paulo Borges Gomes +6 more
wiley +1 more source
Progress in Earth and Planetary ScienceThe Strytan Hydrothermal Field (SHF) in basaltic terrain in Iceland is one of the extant alkaline submarine hydrothermal vent systems favoured as analogues for where life on Earth may have begun.
Carlos Gutiérrez-Ariza +11 more
doaj +1 more source
The role of organic matter in Brazilian Pre‐Salt carbonates
The Depositional Record, Volume 11, Issue 1, Page 403-417, February 2025.Diverse types of organic matter (OM) were identified in Brazilian Pre‐Salt carbonates. The presence of OM along and inside calcite structures indicates a strong microbial influence in Brazilian Pre‐Salt carbonate precipitation. The occurrence of these organic compounds in distinguishing facies raises the discussion of biotic versus abiotic genesis of ...
Ilana Lehn +1 more
wiley +1 more source
Sedimentology, Volume 71, Issue 7, Page 2248-2289, December 2024.ABSTRACT Quaternary to Recent sedimentary dolomite in groundwater calcrete and saltmarsh sediments of Lake Way and Lake Maitland, Western Australia, provide new information about the formation of low‐temperature dolomite. Dolomite can form through numerous pathways depending on the depositional and diagenetic environment.
Justin B. R. Drummond +4 more
wiley +1 more source
Co‐precipitation of primary dolomite and Mg‐rich clays in Deep Springs Lake, California
Sedimentology, Volume 71, Issue 4, Page 1363-1383, June 2024.ABSTRACT In contrast to the prevalence of dolomite [CaMg(CO3)2] in the geological record, there are few instances of recent formation. This discrepancy occurs despite supersaturation with respect to dolomite in many modern marine and lacustrine environments.
Franklin W. C. Hobbs +4 more
wiley +1 more source
Research data from manuscript titled Microbial and abiotic approaches to carbonating stevensite: what works and what doesn’
Arizaleta, Maria
core +1 more source
Sedimentology, Volume 71, Issue 1, Page 263-292, January 2024.Abstract Authigenic magnesium‐clays have been observed and documented in the Green River Formation, specifically as ooidal stevensite grains. Magnesian clays are a valuable proxy for reconstructing shallow‐water, saline–alkaline lake palaeoenvironments due to their responses to chemical changes.
Daniel F. Cupertino +3 more
wiley +1 more source
Microbial and abiotic approaches to carbonating stevensite: what works and what doesn’t
Geochimica et Cosmochimica ActaAlthough Mg-rich clays are common in sediments, rocks and mineral wastes produced by mining, little is known about how they might contribute to carbon dioxide (CO2) sequestration. The purpose of this study is to use previously tested mineral carbonation techniques at ambient temperature and pressure on the low-temperature Mg-rich clay mineral ...
Maria L. Arizaleta +6 more
openaire +2 more sources
Naturally occurring and biomimetic synthesized calcite spherulites [PDF]
, 2020 STW thanks China Scholarship Council and University of St Andrews for a CSC-St Andrews scholarship.Naturally occurring calcite spherulitic particles were collected from East Kirkton Quarry in Bathgate, Scotland. Their microstructure has been revealed, by
Guo, Li +4 more
core +1 more source