geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Trace element heterogeneity along isochronous growth layers in bivalve shell Consequences for environmental reconstruction


, : Trace element heterogeneity along isochronous growth layers in bivalve shell Consequences for environmental reconstruction. Palaeogeography, Palaeoclimatology, Palaeoecology 373: 39-49

To precisely reconstruct environmental changes from high-resolution bivalve shell geochemistry, the shell layers must represent environmental conditions at the time of deposition. Therefore, calcium carbonate along growth lines that formed at the same time should show the same geochemical signature. We test this assumption by evaluating the geochemical spatial homogeneity along growth layers (i.e., shell secreted at a given time) on shell cross-sections of modern shells of the bivalve Protothaca thaca, for ontogenically young and old specimens. Analyses were carried out using laser ablation ICP-MS and solution nebulization ICP-MS. Scanning electron microscope images showed signs of early diagenesis of old. Highlights: Evaluation of geochemical homogeneity of isochronous growth layer on modern bivalves. SEM observation of shell dissolution on shell portion close to the umbo. Differences in trace element distribution along isochronous layer for old and recent shell section. Trace element incorporation process may vary with the age of the specimen. Mantle zonation is assumed to explain Mg/Ca heterogeneity along isochronous layers of recent shell. High-spatial analytical technique procedure for molluscan shell study must be precisely defined.

US$19.90

DOI: 10.1016/j.palaeo.2011.04.024


Other references

Abai, M., 1969: List of Cerambycidae family in lran. Entomologie Phytopath Appl, 28, 66-67,47-54

Götze, K.; Jakobs, K.H., 1994: Unoccupied beta-adrenoceptor-induced adenylyl cyclase stimulation in turkey erythrocyte membranes. The influence of beta-adrenoceptor ligands and a beta-adrenoceptor-derived peptide was studied on stimulation of adenylyl cyclase in membrane preparations of turkey erythrocytes. In the absence of receptor ligands, the hydrolysis-resistant GTP ana...

Jasek, M.C.; Griffith, W.H., 1995: Pharmacological characterization of ionotropic glutamate receptors in basal forebrain neurons of young and aged F344 rats. Society for Neuroscience Abstracts 21(1-3): 350

Michal, I., 1974: Possibilities of the recreational utilization of forests and their aesthetic value. iI. Lesnictivi 20 (4) 383-405

Quisumbing, M.A.R.; Taylor, L., 1989: Resource transfers from agriculture. A model is presented of a two-sector economy and the qualitative effects are determined of terms of trade changes on resource transfers, specifically under two alternative assumptions regarding non-agricultural wages. Empirical evidence is then pr...

D.A.evedo, R.K.; Abdallah, V.D.; Luque, Jé.L., 2007: Community ecology of metazoan parasites of apaiarí Astronotus ocellatus (Cope, 1872) (Perciformes: Cichlidae) from Guandu river, State of Rio de Janeiro, Brazil. Thirty five specimens of apaiarí Astronotus ocellatus (Cope, 1872) from Guandu river, (22 degrees 48'32''S, 43 degrees 37'35''W), state of Rio de Janeiro, Brazil were studied for their metazoan parasites from Decembe...

Westerlind, H.; Stawiarz, L.; Fink, K.; Hillert, J.; Manouchehrinia, A., 2016: Re: Declines in the diagnosis of primary progressive MS-A critical change in phenotype or critical measurement error?. Multiple Sclerosis: -

Titti F.; Federico M.; Borsetti A.; Ceccarelli L.; Verani P.; Rossi G.B., 1989: Establishment of a cell line chronically infected but not producing hiv 1 from an asymptomatic seropositive subject. Morisset, R A (Ed ) Ve Conference Internationale Sur Le Sida: Le Defi Scientifique Et Social; V International Conference on Aids: The Scientific And Social Challenge; Montreal, Quebec, Canada, June 4-9, 1262p International Development Research Centre: Ottawa, Ontario, Canada Illus Paper 611

Angelovski, P.; Sapkarev, J.; Karaman, B., 1992: Quantitative investigations of more important components of the bottom fauna from more greater tributaries of the River Vardar. Godishen Zbornik Biologija Prirodno-Matematichki Fakultet na Univerzitetot Kiril I Metodij Skopje, 45: 11-21

de Bono, J., 2012: Propofol: a safe drug for physician-led procedures?. Europace 14(3): 303-305