The nanoscale anisotropic elastic-plastic behavior of single-crystal aragonite is studied using nanoindentation and tapping mode atomic force microscopy imaging. Force-depth curves coaxial to the axis exhibited load plateaus indicative of dislocation nucleation events. Plasticity on distinct slip systems was evident in residual topographic impressions where four pileup lobes were present after ...

Otoliths were sought in hundreds of samples from Cretaceous to Holocene sections at all sites (747-751) drilled by Ocean Drilling Program Leg 120 on the Kerguelen Plateau. None were recovered. In the younger part of the sequence, the absence is a result of the composition of nototheniid otoliths, which is dominantly aragonite.

Bioerosion, resulting from microbioerosion or biogenic dissolution, macrobioerosion and grazing, is one the main processes involved in reef carbonate budget functioning. On healthy reefs, most of produced carbonates are preserved accumulate. But context global change, reefs increasingly degraded as environmental factors such ocean warming acidification affect negatively accretion positively bio...

A chitosan gel additive modulates the initial vaterite dissolution–recrystallisation in injectable aragonite-based composite cement and promotes its vitro bioactivity.

The paragenesis of carbonates in the Cold Bokkeveld CM chondrite is determined from a detailed petrographic, chemical, spectroscopic, and isotopic study nine associations (aragonite, calcite, dolomite) with other secondary minerals that occur within meteorite. Our reveals existence displaying petrographic features are distinct those type 1 2 commonly observed CM2 meteorites. These include inter...

Mollusk shell formation is a fascinating aspect of biomineralization research. Shell matrix proteins play crucial roles in the control of calcium carbonate crystallization during shell formation in the pearl oyster, Pinctada fucata. Characterization of biomineralization-related genes during larval development could enhance our understanding of shell formation. Genes involved in shell biomineral...

B13B–1076. Gabitov, R. I., G. A. Gaetani, E. B. Watson, A. L. Cohen, and H. L. Ehrlich (2008), Experimental determination of growthrate effect on U and Mg partitioning between aragoniteand fluid at elevated U concentration, Geochim. Cosmochim. Acta, 72, 4058–4068, doi:10.1016/j.gca.2008.05.047.Gaetani, G. A., and A. L. Cohen (2006), Element partitioning during precipitation of arago...