Factors controlling microfractures in black shale: A case study of Ordovician Wufeng Formation-Silurian Longmaxi Formation in Shuanghe Profile, Changning area, Sichuan Basin, SW China

Dazhong DONG,Zhensheng SHI,Shasha SUN,Changmin GUO,Chenchen ZHANG,Wen GUO,Quanzhong GUAN,Mengqi ZHANG,Shan JIANG,Leifu ZHANG,Chao MA,Jin WU,Ning LI,Yan CHANG

</td> </tr> <tr> <td style="text-align: center;color:#fff;" bgcolor="#00c2de"><strong>Fig. 3.</strong> <b>Pictures of typical microfractures of Wufeng-Longmaxi Formations on the Shuanghe profile. (a) Bedding-plane slip fractures; (b) Lamellation fractures and non-bedding fractures, the non-bedding fractures cut through the lamellation fractures, forming a fracture network; (c) En echelon fractures; (d) Non-bedding fractures, intersecting with the bedding plane; (e) Lamellation fractures, intersecting with the bedding plane at low angles; (f) High-angle microfractures cut through the bedding fractures.</b><br/></td> </tr> <tr> <td height="5" bgcolor="#fff"></td> </tr> <tr> <td style="text-align: center;" bgcolor="#fff"> <img src="../1876-3804-45-5-818/img_3.png" onload="javascript:DrawImage(this,'800','600');" /> </td> </tr> <tr> <td height="5" bgcolor="#fff"></td> </tr> <tr> <td height="30"></td> </tr> </table> </BODY> <script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script> <script type="text/x-mathjax-config"> MathJax.Hub.Config({ extensions: ["tex2jax.js"], jax: ["input/TeX", "output/HTML-CSS"], tex2jax: {inlineMath: [ ['$','$'], ["\$","\$"] ],displayMath: [ ['$$','$$'], ["\\[","\\]"] ],processEscapes: true}, "HTML-CSS": { availableFonts: ["TeX"] }, TeX: {equationNumbers: {autoNumber: ["none"], useLabelIds: true}}, "HTML-CSS": {linebreaks: {automatic: true}}, SVG: {linebreaks: {automatic: true}} }); </script> </html>