Fine Structure (IMAGE) Penn State Caption Scanning electron microscope images showing localized shear surfaces in cross-section and oblique view. Sense of shear is top to the right Note striations on shear surface. Similar patterns appear with serpentine. Credit Haines, S. H.; Kaproth, B.; Marone, C.; Saffer, D. and B. A. van der Pluijm Usage Restrictions Non commercial use only License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.