Mg isotopic systematics during early diagenetic aragonite-calcite transition: Insights from the Key Largo Limestone
Sign Up to like & getrecommendations! Published in 2020 at "Chemical Geology"
DOI: 10.1016/j.chemgeo.2020.119876
Abstract: Abstract The seawater magnesium (Mg) isotopic composition (δ26MgSW) can be applied to quantify marine Mg cycle in Earth's history. However, reconstruction of δ26MgSW by using marine carbonate has been challenged by the large range of… read more here.
Keywords: carbonate; calcite transition; isotopic; precipitation ... See more keywords
The transformation of aragonite to calcite in the presence of magnesium: Implications for marine diagenesis
Sign Up to like & getrecommendations! Published in 2021 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2021.117166
Abstract: Abstract Magnesium (Mg) in natural waters plays a critical role in governing carbonate mineral formation, dissolution, and diagenesis. Previous laboratory experiments show that Mg can strongly inhibit direct calcite precipitation as well as aragonite to… read more here.
Keywords: transformation aragonite; magnesium; aragonite calcite; diagenesis ... See more keywords
Kinetic effects during the experimental transition of aragonite to calcite in aqueous solution: Insights from clumped and oxygen isotope signatures
Sign Up to like & getrecommendations! Published in 2019 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2019.01.012
Abstract: Abstract Paleoenvironmental reconstructions based on the clumped isotopes (Δ47) and traditional isotope (δ13C or δ18O) techniques are often problematic for carbonates that have undergone diagenetic alteration. One of the most common types of diagenesis is… read more here.
Keywords: isotope; 13c 18o; oxygen isotope; aragonite calcite ... See more keywords