ROPES ET AL.: GROWTH LINKS OK OCEAN QIAHOGS 



sitional CA-CL microstructure in the upper left interrupted by the penetration of epoxy into the shell along the line cor- 

 responding with the notching event (scale bar = 10 /um). Beyond the zone of epoxy penetration this line is recognized as 

 an ISP band. Following this line is a zone of SphP disruption growth which gradually gives way to transitional CA-CL. 

 This photomicrograph was taken off the field of view of (b), to the lower left, (d) Disruption growth of SphP micro- 

 structure following the line which corresponds to marking of the clam (scale bar = 50 /xm). 



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