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Characteristics of the aragonite - calcite transistion in bivalve shells

Kelm, Klemens and Griesshaber, Erika and Ubhi, Harvinder Singh and Schmahl, Wolfgang W. (2012) Characteristics of the aragonite - calcite transistion in bivalve shells. DGK 2012, 12.03.2012 - 15.03.2012, München.

Full text not available from this repository.

Abstract

Bivalves and gastropods contain both, calcite and aragonite within their shells (e.g.Checa & Rodriguez-Navarro 2005, Checa et al. 2009). The transition between these phases is neither interlinked nor gradual, it is abrupt and occurs within a spatial range of one to two microns. We have investigated in the shell of the modern oyster Crassosstrea gigas the transition zone between the calcite and the aragonite portion of the shell with TEM (Fig.1) and high-resolution EBSD (Fig. 2). Adult oyster shells are composed mainly of calcite. However, there are small areas within the shell where aragonite is present, shell portions where the muscles (the two adductor muscles, the Quenstedt muscles and the pedal muscles) are attached to the skeleton. Thus, the presence of aragonite at these skeletal parts is required for the overall function of the shell.

Item URL in elib:https://elib.dlr.de/78946/
Document Type:Conference or Workshop Item (Speech)
Title:Characteristics of the aragonite - calcite transistion in bivalve shells
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kelm, KlemensKlemens.Kelm (at) DLR.deUNSPECIFIED
Griesshaber, ErikaGeoBioCenter LMU and Dept. of Ear th and Environmental Sciences, LMU Munich, GermanyUNSPECIFIED
Ubhi, Harvinder SinghOxford InstrumentsUNSPECIFIED
Schmahl, Wolfgang W.GeoBioCenter LMU and Dept. of Ear th and Environmental Sciences, LMU Munich, GermanyUNSPECIFIED
Date:15 March 2012
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Calcite, Aragonite, Biomineralization, Crassostre Gigas
Event Title:DGK 2012
Event Location:München
Event Type:national Conference
Event Dates:12.03.2012 - 15.03.2012
Organizer:Deutsche Gesellschaft für Kristallographie
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures & Materials (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Administrativ-Technische Betriebsleitung / Mikroanalytik und Metallographie
Deposited By: Kelm, Dr. Klemens
Deposited On:26 Nov 2012 14:31
Last Modified:26 Nov 2012 14:31

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