Fig. 3
From: Crystallographic and geochemical responses of giant clams on turbid reefs
Crystallographic texture of high turbid and low turbid giant clam shells. EBSD inverse pole figure maps (IPF-Y) and corresponding contoured pole figures of different layers and associated microstructures in high (Triangle) and low (Baik) turbid giant clam shells. (a) Aragonitic arrangements of complex crossed lamellar microstructure with prisms in the IL of high turbid shells (MUD 48). (b) Irregular complex crossed lamellar microstructure with lower crystallographic orderliness (MUD 16) in the IL of low turbid shells. Identical arrangements of (c) crossed lamellar (MUD 27) and (d) adductor myostracum (MUD 88) present in the OL of both high and low turbid shells. Contoured pole figures show a common preferred crystallographic orientation of the [001] axis in all identified microstructures. The MUD values associated with each pole figure indicate different co-orientation strengths between the IL in high and low turbid shells, as well as between different regions of the shell. Reference pole figure shows orientation of GL (growth lines) and GD (growth direction).
