{"id":1636,"date":"2023-12-07T18:21:30","date_gmt":"2023-12-07T18:21:30","guid":{"rendered":"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/?post_type=chapter&#038;p=1636"},"modified":"2023-12-11T15:22:16","modified_gmt":"2023-12-11T15:22:16","slug":"exercise-6","status":"publish","type":"chapter","link":"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/chapter\/exercise-6\/","title":{"raw":"Exercise 6","rendered":"Exercise 6"},"content":{"raw":"<p>Based on the limestone Mohr diagram below that was taken from the solution of <a href=\"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/chapter\/exercise-3\/\">Exercise 3<\/a>, answer the following questions.<\/p>\r\n<p class=\"hanging-indent\" style=\"padding-top: 2pt; 61pt;18pt;;text-align: justify;\">a) What type of fractures will be formed under the stress conditions represented by the Mohr circle number 1? What will be the tectonic regime and the orientation of the fractures for the following three situations:<\/p>\r\n\r\n<ul>\r\n \t<li style=\"text-align: left;\">when <em><span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><\/em><sub><span class=\"s31\">1<\/span><\/sub> is vertical and <em><span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><\/em><sub><span class=\"s31\">3<\/span><\/sub> is horizontal and strikes EW;<\/li>\r\n \t<li style=\"text-align: left;\">when <em><span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><\/em><sub><span class=\"s31\">1<\/span><\/sub> and <span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><sub><span class=\"s31\">3<\/span><\/sub> are horizontal and strike NS and EW, respectively; and,<\/li>\r\n \t<li style=\"text-align: left;\">when <em><span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><\/em><sub><span class=\"s31\">3<\/span><\/sub> is vertical and <em><span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><\/em><sub><span class=\"s31\">1<\/span><\/sub> strikes EW?<\/li>\r\n<\/ul>\r\n<p style=\"padding-top: 3pt; 61pt;text-indent: 0pt; ;text-align: left;\">Enter your answers in the table below and make drawings representing the stresses and the resulting fractures in each case.<\/p>\r\n<img class=\" wp-image-1256 aligncenter\" src=\"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/wp-content\/uploads\/sites\/35\/2023\/12\/Image_088-300x185.jpg\" alt=\"\" width=\"615\" height=\"379\" \/>\r\n<table style=\"border-collapse: collapse; margin-left: 10.024pt; height: 319px;\" width=\"1328\" cellspacing=\"0\">\r\n<tbody>\r\n<tr style=\"height: 18pt;\">\r\n<td style=\"width: 307.633px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 34px;\">\r\n<p class=\"s98\" style=\"padding-top: 3pt; 2pt;text-indent: 0pt; text-align: left;\"><strong>Stress orientation<\/strong><\/p>\r\n<\/td>\r\n<td style=\"width: 335.4px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 34px;\">\r\n<p class=\"s98\" style=\"padding-top: 3pt; 24pt;text-indent: 0pt; text-align: left;\"><strong>Tectonic regime<\/strong><\/p>\r\n<\/td>\r\n<td style=\"width: 321.367px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 34px;\">\r\n<p class=\"s98\" style=\"padding-top: 3pt; 20pt;text-indent: 0pt; text-align: left;\"><strong>Fracture strike<\/strong><\/p>\r\n<\/td>\r\n<td style=\"width: 310.633px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 34px;\">\r\n<p class=\"s98\" style=\"padding-top: 3pt; 25pt;text-indent: 0pt; text-align: left;\"><strong>Fracture dip<\/strong><\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr style=\"height: 40pt;\">\r\n<td style=\"width: 307.633px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 76px;\">\r\n<p class=\"s99\" style=\"2pt;text-indent: 0pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">1<\/span><\/sub> <span class=\"s102\">is vertical<\/span><\/p>\r\n<p class=\"s99\" style=\"2pt;text-indent: 0pt; line-height: 12pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">3<\/span><\/sub> <span class=\"s102\">is horizontal and<\/span><\/p>\r\n<p class=\"s99\" style=\"2pt;text-indent: 0pt; line-height: 12pt; text-align: left;\"><span class=\"s102\">strikes EW<\/span><\/p>\r\n<\/td>\r\n<td style=\"width: 335.4px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 76px;\">\r\n<p style=\"text-indent: 0pt; text-align: left;\"><\/p>\r\n<\/td>\r\n<td style=\"width: 321.367px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 76px;\">\r\n<p style=\"text-indent: 0pt; text-align: left;\"><\/p>\r\n<\/td>\r\n<td style=\"width: 310.633px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 76px;\">\r\n<p style=\"text-indent: 0pt; text-align: left;\"><\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr style=\"height: 50pt;\">\r\n<td style=\"width: 307.633px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 104px;\">\r\n<p class=\"s99\" style=\"2pt;text-indent: 0pt; line-height: 111%; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">1<\/span><\/sub> <span class=\"s102\">is horizontal and strikes NS<\/span><\/p>\r\n<p class=\"s99\" style=\"2pt;text-indent: 0pt; line-height: 12pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">3<\/span><\/sub> <span class=\"s102\">is horizontal and<\/span><\/p>\r\n<p class=\"s99\" style=\"2pt;text-indent: 0pt; line-height: 12pt; text-align: left;\">strikes EW<\/p>\r\n<\/td>\r\n<td style=\"width: 335.4px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 104px;\">\r\n<p style=\"text-indent: 0pt; text-align: left;\"><\/p>\r\n<\/td>\r\n<td style=\"width: 321.367px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 104px;\">\r\n<p style=\"text-indent: 0pt; text-align: left;\"><\/p>\r\n<\/td>\r\n<td style=\"width: 310.633px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 104px;\">\r\n<p style=\"text-indent: 0pt; text-align: left;\"><\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr style=\"height: 40pt;\">\r\n<td style=\"width: 307.633px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 76px;\">\r\n<p class=\"s99\" style=\"2pt;text-indent: 0pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">3<\/span><\/sub> <span class=\"s102\">is vertical<\/span><\/p>\r\n<p class=\"s63\" style=\"2pt;text-indent: 0pt; line-height: 12pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s77\">1<\/span><\/sub> <span class=\"s102\">is horizontal and<\/span><\/p>\r\n<p class=\"s63\" style=\"2pt;text-indent: 0pt; line-height: 12pt; text-align: left;\"><span class=\"s102\">strikes EW<\/span><\/p>\r\n<\/td>\r\n<td style=\"width: 335.4px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 76px;\">\r\n<p style=\"text-indent: 0pt; text-align: left;\"><\/p>\r\n<\/td>\r\n<td style=\"width: 321.367px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 76px;\">\r\n<p style=\"text-indent: 0pt; text-align: left;\"><\/p>\r\n<\/td>\r\n<td style=\"width: 310.633px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 76px;\">\r\n<p style=\"text-indent: 0pt; text-align: left;\"><\/p>\r\n<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<p class=\"hanging-indent\">b) What type of fractures will be formed under the stress conditions represented by Mohr circle number 2? What will be the tectonic regime and the orientation of the fractures for the following three situations:<\/p>\r\n\r\n<ul>\r\n \t<li style=\"list-style-type: none;\">\r\n<ul>\r\n \t<li style=\"list-style-type: none;\">\r\n<ul id=\"l44\">\r\n \t<li data-list-text=\"\u2022\">\r\n<p style=\"115pt;17pt;line-height: 17pt; text-align: left;\">when <span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><sub><span class=\"s31\">1<\/span><\/sub> is vertical and <span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><sub><span class=\"s31\">3<\/span><\/sub> is horizontal and strikes EW;<\/p>\r\n<\/li>\r\n \t<li data-list-text=\"\u2022\">\r\n<p style=\"115pt;18pt;text-align: left;\">when <span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><sub><span class=\"s31\">1<\/span><\/sub> <span class=\"s103\">an<\/span>d <strong><span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><\/strong><sub><span class=\"s31\">3<\/span><\/sub> are horizontal and strike NS and EW, respectively; and,<\/p>\r\n<\/li>\r\n \t<li data-list-text=\"\u2022\">\r\n<p style=\"115pt;17pt;line-height: 17pt; text-align: left;\">when <span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><sub><span class=\"s31\">3<\/span><\/sub> is vertical and <span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><sub><span class=\"s31\">1<\/span><\/sub> strikes EW?<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<p style=\"61pt;text-indent: 0pt; ;text-align: left;\">Answer this question using the table below and make drawings representing the stresses and the resulting fractures in each case.<\/p>\r\n\r\n<table style=\"border-collapse: collapse; margin-left: 10.024pt; height: 279px;\" width=\"1511\" cellspacing=\"0\">\r\n<tbody>\r\n<tr style=\"height: 18pt;\">\r\n<td style=\"width: 360.733px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 34px;\">\r\n<p class=\"s98\" style=\"padding-top: 3pt; 2pt;text-indent: 0pt; text-align: left;\"><strong>Stress orientation\r\n<\/strong><\/p>\r\n<\/td>\r\n<td style=\"width: 392.95px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 34px;\">\r\n<p class=\"s98\" style=\"padding-top: 3pt; 38pt;text-indent: 0pt; text-align: left;\"><strong>Tectonic regime<\/strong><\/p>\r\n<\/td>\r\n<td style=\"width: 335.7px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 34px;\">\r\n<p class=\"s98\" style=\"padding-top: 3pt; 16pt;text-indent: 0pt; text-align: left;\"><strong>Fracture strike<\/strong><\/p>\r\n<\/td>\r\n<td style=\"width: 305.6px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 34px;\">\r\n<p class=\"s98\" style=\"padding-top: 3pt; 21pt;text-indent: 0pt; text-align: left;\"><strong>Fracture dip<\/strong><\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr style=\"height: 29pt;\">\r\n<td style=\"width: 766.65px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 61px;\" colspan=\"2\">\r\n<p class=\"s99\" style=\"2pt;text-indent: 0pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">1<\/span><\/sub> <span class=\"s102\">is vertical<\/span><\/p>\r\n<p class=\"s99\" style=\"padding-top: 1pt; 2pt;text-indent: 0pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">3<\/span><\/sub> <span class=\"s102\">is horizontal and\r\n<\/span><span class=\"s102\">strikes EW<\/span><\/p>\r\n<\/td>\r\n<td style=\"width: 335.7px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 61px;\">\r\n<p style=\"text-indent: 0pt; text-align: left;\"><\/p>\r\n<\/td>\r\n<td style=\"width: 305.6px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 61px;\">\r\n<p style=\"text-indent: 0pt; text-align: left;\"><\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr style=\"height: 30pt;\">\r\n<td style=\"width: 766.65px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 61px;\" colspan=\"2\">\r\n<p class=\"s99\" style=\"2pt;text-indent: 0pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">1<\/span><\/sub> <span class=\"s102\">is horizontal and\r\nstrikes NS<\/span><\/p>\r\n<p class=\"s99\" style=\"padding-top: 1pt; 2pt;text-indent: 0pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">3<\/span><\/sub> <span class=\"s102\">is horizontal and\r\nstrikes EW<\/span><\/p>\r\n<\/td>\r\n<td style=\"width: 335.7px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 61px;\">\r\n<p style=\"text-indent: 0pt; text-align: left;\"><\/p>\r\n<\/td>\r\n<td style=\"width: 305.6px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 61px;\">\r\n<p style=\"text-indent: 0pt; text-align: left;\"><\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr style=\"height: 30pt;\">\r\n<td style=\"width: 766.65px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 61px;\" colspan=\"2\">\r\n<p class=\"s99\" style=\"2pt;text-indent: 0pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">3<\/span><\/sub> <span class=\"s102\">is vertical<\/span><\/p>\r\n<p class=\"s99\" style=\"padding-top: 1pt; 2pt;text-indent: 0pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">1<\/span><\/sub> <span class=\"s102\">is horizontal and\r\nstrikes EW<\/span><\/p>\r\n<\/td>\r\n<td style=\"width: 335.7px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 61px;\">\r\n<p style=\"text-indent: 0pt; text-align: left;\"><\/p>\r\n<\/td>\r\n<td style=\"width: 305.6px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 61px;\">\r\n<p style=\"text-indent: 0pt; text-align: left;\"><\/p>\r\n<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<p class=\"s62\" style=\"padding-top: 2pt; 11pt;text-indent: 0pt; text-align: right;\"><a href=\"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/chapter\/2-7-highlights-on-fracture-types-and-groundwater-flow-with-opportunities-to-exercise-knowledge-gained-by-reading-sections-1-and-2\/#exercise-1\"><span style=\"text-decoration: underline;\"><strong>Click to return to where text linked to Exercise 6<\/strong><\/span><\/a><\/p>\r\n<p class=\"s62\" style=\"padding-top: 2pt; 11pt;text-indent: 0pt; text-align: right;\"><a href=\"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/chapter\/solution-exercise-6\/\"><span style=\"text-decoration: underline;\"><strong>Click for solution to Exercise 6<\/strong><\/span><\/a><\/p>","rendered":"<p>Based on the limestone Mohr diagram below that was taken from the solution of <a href=\"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/chapter\/exercise-3\/\">Exercise 3<\/a>, answer the following questions.<\/p>\n<p class=\"hanging-indent\" style=\"padding-top: 2pt; 61pt;18pt;;text-align: justify;\">a) What type of fractures will be formed under the stress conditions represented by the Mohr circle number 1? What will be the tectonic regime and the orientation of the fractures for the following three situations:<\/p>\n<ul>\n<li style=\"text-align: left;\">when <em><span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><\/em><sub><span class=\"s31\">1<\/span><\/sub> is vertical and <em><span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><\/em><sub><span class=\"s31\">3<\/span><\/sub> is horizontal and strikes EW;<\/li>\n<li style=\"text-align: left;\">when <em><span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><\/em><sub><span class=\"s31\">1<\/span><\/sub> and <span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><sub><span class=\"s31\">3<\/span><\/sub> are horizontal and strike NS and EW, respectively; and,<\/li>\n<li style=\"text-align: left;\">when <em><span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><\/em><sub><span class=\"s31\">3<\/span><\/sub> is vertical and <em><span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><\/em><sub><span class=\"s31\">1<\/span><\/sub> strikes EW?<\/li>\n<\/ul>\n<p style=\"padding-top: 3pt; 61pt;text-indent: 0pt; ;text-align: left;\">Enter your answers in the table below and make drawings representing the stresses and the resulting fractures in each case.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1256 aligncenter\" src=\"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/wp-content\/uploads\/sites\/35\/2023\/12\/Image_088-300x185.jpg\" alt=\"\" width=\"615\" height=\"379\" srcset=\"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/wp-content\/uploads\/sites\/35\/2023\/12\/Image_088-300x185.jpg 300w, https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/wp-content\/uploads\/sites\/35\/2023\/12\/Image_088-65x40.jpg 65w, https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/wp-content\/uploads\/sites\/35\/2023\/12\/Image_088-225x139.jpg 225w, https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/wp-content\/uploads\/sites\/35\/2023\/12\/Image_088-350x216.jpg 350w, https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/wp-content\/uploads\/sites\/35\/2023\/12\/Image_088.jpg 405w\" sizes=\"auto, (max-width: 615px) 100vw, 615px\" \/><\/p>\n<table style=\"border-collapse: collapse; margin-left: 10.024pt; height: 319px; width: 1328px; border-spacing: 0px;\">\n<tbody>\n<tr style=\"height: 18pt;\">\n<td style=\"width: 307.633px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 34px;\">\n<p class=\"s98\" style=\"padding-top: 3pt; 2pt;text-indent: 0pt; text-align: left;\"><strong>Stress orientation<\/strong><\/p>\n<\/td>\n<td style=\"width: 335.4px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 34px;\">\n<p class=\"s98\" style=\"padding-top: 3pt; 24pt;text-indent: 0pt; text-align: left;\"><strong>Tectonic regime<\/strong><\/p>\n<\/td>\n<td style=\"width: 321.367px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 34px;\">\n<p class=\"s98\" style=\"padding-top: 3pt; 20pt;text-indent: 0pt; text-align: left;\"><strong>Fracture strike<\/strong><\/p>\n<\/td>\n<td style=\"width: 310.633px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 34px;\">\n<p class=\"s98\" style=\"padding-top: 3pt; 25pt;text-indent: 0pt; text-align: left;\"><strong>Fracture dip<\/strong><\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 40pt;\">\n<td style=\"width: 307.633px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 76px;\">\n<p class=\"s99\" style=\"2pt;text-indent: 0pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">1<\/span><\/sub> <span class=\"s102\">is vertical<\/span><\/p>\n<p class=\"s99\" style=\"2pt;text-indent: 0pt; line-height: 12pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">3<\/span><\/sub> <span class=\"s102\">is horizontal and<\/span><\/p>\n<p class=\"s99\" style=\"2pt;text-indent: 0pt; line-height: 12pt; text-align: left;\"><span class=\"s102\">strikes EW<\/span><\/p>\n<\/td>\n<td style=\"width: 335.4px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 76px;\">\n<p style=\"text-indent: 0pt; text-align: left;\">\n<\/td>\n<td style=\"width: 321.367px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 76px;\">\n<p style=\"text-indent: 0pt; text-align: left;\">\n<\/td>\n<td style=\"width: 310.633px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 76px;\">\n<p style=\"text-indent: 0pt; text-align: left;\">\n<\/td>\n<\/tr>\n<tr style=\"height: 50pt;\">\n<td style=\"width: 307.633px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 104px;\">\n<p class=\"s99\" style=\"2pt;text-indent: 0pt; line-height: 111%; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">1<\/span><\/sub> <span class=\"s102\">is horizontal and strikes NS<\/span><\/p>\n<p class=\"s99\" style=\"2pt;text-indent: 0pt; line-height: 12pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">3<\/span><\/sub> <span class=\"s102\">is horizontal and<\/span><\/p>\n<p class=\"s99\" style=\"2pt;text-indent: 0pt; line-height: 12pt; text-align: left;\">strikes EW<\/p>\n<\/td>\n<td style=\"width: 335.4px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 104px;\">\n<p style=\"text-indent: 0pt; text-align: left;\">\n<\/td>\n<td style=\"width: 321.367px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 104px;\">\n<p style=\"text-indent: 0pt; text-align: left;\">\n<\/td>\n<td style=\"width: 310.633px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 104px;\">\n<p style=\"text-indent: 0pt; text-align: left;\">\n<\/td>\n<\/tr>\n<tr style=\"height: 40pt;\">\n<td style=\"width: 307.633px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 76px;\">\n<p class=\"s99\" style=\"2pt;text-indent: 0pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">3<\/span><\/sub> <span class=\"s102\">is vertical<\/span><\/p>\n<p class=\"s63\" style=\"2pt;text-indent: 0pt; line-height: 12pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s77\">1<\/span><\/sub> <span class=\"s102\">is horizontal and<\/span><\/p>\n<p class=\"s63\" style=\"2pt;text-indent: 0pt; line-height: 12pt; text-align: left;\"><span class=\"s102\">strikes EW<\/span><\/p>\n<\/td>\n<td style=\"width: 335.4px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 76px;\">\n<p style=\"text-indent: 0pt; text-align: left;\">\n<\/td>\n<td style=\"width: 321.367px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 76px;\">\n<p style=\"text-indent: 0pt; text-align: left;\">\n<\/td>\n<td style=\"width: 310.633px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 76px;\">\n<p style=\"text-indent: 0pt; text-align: left;\">\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p class=\"hanging-indent\">b) What type of fractures will be formed under the stress conditions represented by Mohr circle number 2? What will be the tectonic regime and the orientation of the fractures for the following three situations:<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li style=\"list-style-type: none;\">\n<ul id=\"l44\">\n<li data-list-text=\"\u2022\">\n<p style=\"115pt;17pt;line-height: 17pt; text-align: left;\">when <span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><sub><span class=\"s31\">1<\/span><\/sub> is vertical and <span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><sub><span class=\"s31\">3<\/span><\/sub> is horizontal and strikes EW;<\/p>\n<\/li>\n<li data-list-text=\"\u2022\">\n<p style=\"115pt;18pt;text-align: left;\">when <span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><sub><span class=\"s31\">1<\/span><\/sub> <span class=\"s103\">an<\/span>d <strong><span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><\/strong><sub><span class=\"s31\">3<\/span><\/sub> are horizontal and strike NS and EW, respectively; and,<\/p>\n<\/li>\n<li data-list-text=\"\u2022\">\n<p style=\"115pt;17pt;line-height: 17pt; text-align: left;\">when <span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><sub><span class=\"s31\">3<\/span><\/sub> is vertical and <span class=\"s23\"><em><span class=\"s23\">\u03c3<\/span><\/em><\/span><sub><span class=\"s31\">1<\/span><\/sub> strikes EW?<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p style=\"61pt;text-indent: 0pt; ;text-align: left;\">Answer this question using the table below and make drawings representing the stresses and the resulting fractures in each case.<\/p>\n<table style=\"border-collapse: collapse; margin-left: 10.024pt; height: 279px; width: 1511px; border-spacing: 0px;\">\n<tbody>\n<tr style=\"height: 18pt;\">\n<td style=\"width: 360.733px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 34px;\">\n<p class=\"s98\" style=\"padding-top: 3pt; 2pt;text-indent: 0pt; text-align: left;\"><strong>Stress orientation<br \/>\n<\/strong><\/p>\n<\/td>\n<td style=\"width: 392.95px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 34px;\">\n<p class=\"s98\" style=\"padding-top: 3pt; 38pt;text-indent: 0pt; text-align: left;\"><strong>Tectonic regime<\/strong><\/p>\n<\/td>\n<td style=\"width: 335.7px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 34px;\">\n<p class=\"s98\" style=\"padding-top: 3pt; 16pt;text-indent: 0pt; text-align: left;\"><strong>Fracture strike<\/strong><\/p>\n<\/td>\n<td style=\"width: 305.6px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 34px;\">\n<p class=\"s98\" style=\"padding-top: 3pt; 21pt;text-indent: 0pt; text-align: left;\"><strong>Fracture dip<\/strong><\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 29pt;\">\n<td style=\"width: 766.65px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 61px;\" colspan=\"2\">\n<p class=\"s99\" style=\"2pt;text-indent: 0pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">1<\/span><\/sub> <span class=\"s102\">is vertical<\/span><\/p>\n<p class=\"s99\" style=\"padding-top: 1pt; 2pt;text-indent: 0pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">3<\/span><\/sub> <span class=\"s102\">is horizontal and<br \/>\n<\/span><span class=\"s102\">strikes EW<\/span><\/p>\n<\/td>\n<td style=\"width: 335.7px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 61px;\">\n<p style=\"text-indent: 0pt; text-align: left;\">\n<\/td>\n<td style=\"width: 305.6px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 61px;\">\n<p style=\"text-indent: 0pt; text-align: left;\">\n<\/td>\n<\/tr>\n<tr style=\"height: 30pt;\">\n<td style=\"width: 766.65px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 61px;\" colspan=\"2\">\n<p class=\"s99\" style=\"2pt;text-indent: 0pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">1<\/span><\/sub> <span class=\"s102\">is horizontal and<br \/>\nstrikes NS<\/span><\/p>\n<p class=\"s99\" style=\"padding-top: 1pt; 2pt;text-indent: 0pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">3<\/span><\/sub> <span class=\"s102\">is horizontal and<br \/>\nstrikes EW<\/span><\/p>\n<\/td>\n<td style=\"width: 335.7px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 61px;\">\n<p style=\"text-indent: 0pt; text-align: left;\">\n<\/td>\n<td style=\"width: 305.6px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 61px;\">\n<p style=\"text-indent: 0pt; text-align: left;\">\n<\/td>\n<\/tr>\n<tr style=\"height: 30pt;\">\n<td style=\"width: 766.65px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 61px;\" colspan=\"2\">\n<p class=\"s99\" style=\"2pt;text-indent: 0pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">3<\/span><\/sub> <span class=\"s102\">is vertical<\/span><\/p>\n<p class=\"s99\" style=\"padding-top: 1pt; 2pt;text-indent: 0pt; text-align: left;\"><strong><em><span class=\"s23\">\u03c3<\/span><\/em><\/strong><sub><span class=\"s100\">1<\/span><\/sub> <span class=\"s102\">is horizontal and<br \/>\nstrikes EW<\/span><\/p>\n<\/td>\n<td style=\"width: 335.7px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 61px;\">\n<p style=\"text-indent: 0pt; text-align: left;\">\n<\/td>\n<td style=\"width: 305.6px; border-top-style: solid; border-top-width: 1pt; border-bottom-style: solid; border-bottom-width: 1pt; height: 61px;\">\n<p style=\"text-indent: 0pt; text-align: left;\">\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p class=\"s62\" style=\"padding-top: 2pt; 11pt;text-indent: 0pt; text-align: right;\"><a href=\"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/chapter\/2-7-highlights-on-fracture-types-and-groundwater-flow-with-opportunities-to-exercise-knowledge-gained-by-reading-sections-1-and-2\/#exercise-1\"><span style=\"text-decoration: underline;\"><strong>Click to return to where text linked to Exercise 6<\/strong><\/span><\/a><\/p>\n<p class=\"s62\" style=\"padding-top: 2pt; 11pt;text-indent: 0pt; text-align: right;\"><a href=\"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/chapter\/solution-exercise-6\/\"><span style=\"text-decoration: underline;\"><strong>Click for solution to Exercise 6<\/strong><\/span><\/a><\/p>\n","protected":false},"author":6,"menu_order":7,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-1636","chapter","type-chapter","status-publish","hentry"],"part":1403,"_links":{"self":[{"href":"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/wp-json\/pressbooks\/v2\/chapters\/1636","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/wp-json\/wp\/v2\/users\/6"}],"version-history":[{"count":25,"href":"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/wp-json\/pressbooks\/v2\/chapters\/1636\/revisions"}],"predecessor-version":[{"id":2110,"href":"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/wp-json\/pressbooks\/v2\/chapters\/1636\/revisions\/2110"}],"part":[{"href":"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/wp-json\/pressbooks\/v2\/parts\/1403"}],"metadata":[{"href":"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/wp-json\/pressbooks\/v2\/chapters\/1636\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/wp-json\/wp\/v2\/media?parent=1636"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/wp-json\/pressbooks\/v2\/chapter-type?post=1636"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/wp-json\/wp\/v2\/contributor?post=1636"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/books.gw-project.org\/structural-geology-applied-to-fractured-aquifer-characterization\/wp-json\/wp\/v2\/license?post=1636"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}