{"id":642,"date":"2023-07-07T11:05:33","date_gmt":"2023-07-07T02:05:33","guid":{"rendered":"https:\/\/www.elst.okayama-u.ac.jp\/en\/?page_id=642"},"modified":"2025-01-24T15:52:34","modified_gmt":"2025-01-24T06:52:34","slug":"areas01_earth","status":"publish","type":"page","link":"https:\/\/www.elst.okayama-u.ac.jp\/en\/education\/mc-chikyu\/areas01_earth\/","title":{"rendered":"Petrology"},"content":{"rendered":"<h4>&nbsp;<\/h4>\n<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-69 aligncenter\" src=\"https:\/\/www.elst.okayama-u.ac.jp\/up_load_files\/areas\/areas01_earth\/theme_EPMA.jpg\" alt=\"\" width=\"506\" height=\"337\"><\/p>\n<p><span style=\"font-size: 12pt\">Rocks record the history from their formation up to the present. Therefore, by observing and analyzing the rock\u2019s chemical composition and the types and compositions of the constituent minerals, it is possible to unravel the history of the rock. Deciphering these past geological phenomena can also help us to understand the mechanisms of geological phenomena occurring on the Earth today. We are particularly interested in the formation mechanisms of rocks that make up the ocean floor and plate convergence zones.<\/span><\/p>\n<table class=\"el_table_fix\" style=\"width: 100%\">\n<tbody>\n<tr>\n<th style=\"width: 20%\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium\" src=\"https:\/\/www.elst.okayama-u.ac.jp\/up_load_files\/areas\/areas01_earth\/NOZAKA Toshio.jpg\" width=\"320\" height=\"408\"><\/th>\n<td style=\"width: 80%\">\n<ul>\n<li style=\"list-style-type: none;font-size: 12px;margin-left: -20px\"><span style=\"font-size: 12pt\">Assoc. Prof. NOZAKA Toshio<\/span><\/li>\n<li style=\"list-style-type: none;font-size: 12px;margin-left: -20px\"><span style=\"font-size: 12pt\">E-mail: <span id=\"content_ousdb1_lp$002fitem$005b1$005d$002fsys_mail\">nozaka<span style=\"color: #0000ff\"> [at]<\/span> <\/span>cc.okayama-u.ac.jp<\/span><\/li>\n<li style=\"list-style-type: none;font-size: 12px;margin-left: -20px\"><span style=\"font-size: 12pt\">Metamorphic rock, igneous rock, geology, crust, mantle\n<p><\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 12pt\"><a class=\"el_linkBtn\" href=\"https:\/\/soran.cc.okayama-u.ac.jp\/html\/7f35e78196e9152f74506e4da22f6611_en.html\">Directory of Researchers<\/a>&nbsp;<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<div style=\"width: 276px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.elst.okayama-u.ac.jp\/up_load_files\/areas\/areas01_earth\/img_NOZAKA Toshio.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"https:\/\/www.elst.okayama-u.ac.jp\/up_load_files\/areas\/areas01_earth\/img_NOZAKA Toshio.jpg\" alt=\"\" width=\"266\" height=\"203\"><\/a><p class=\"wp-caption-text\">\uff08Image provided\uff1aIODP\u3000http:\/\/iodp.tamu.edu\/scienceops\/gallery\/exp399\/week2\/\uff09<\/p><\/div>\n<p>Through the study of the oceanic plates and ancient oceanic crust and mantle rocks exposed on the land, we are trying to unravel the mysteries of phenomena occurring on and within the seafloor.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<table class=\"el_table_fix\" style=\"width: 100%\">\n<tbody>\n<tr>\n<th style=\"width: 20%\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium\" src=\"https:\/\/www.elst.okayama-u.ac.jp\/up_load_files\/areas\/areas01_earth\/NAKAMURA Daisuke.jpg\" width=\"320\" height=\"408\"><\/th>\n<td style=\"width: 80%\">\n<ul>\n<li style=\"list-style-type: none;font-size: 12px;margin-left: -20px\"><span style=\"font-size: 12pt\">Assoc. Prof. NAKAMURA Daisuke<\/span><\/li>\n<li style=\"list-style-type: none;font-size: 12px;margin-left: -20px\"><span style=\"font-size: 12pt\">E-mail: <span id=\"content_ousdb1_lp$002fitem$005b37$005d$002fsys_mail\">nakadai<span style=\"color: #0000ff\"> [at]<\/span> <\/span>okayama-u.ac.jp<\/span><\/li>\n<li style=\"list-style-type: none;font-size: 12px;margin-left: -20px\"><span style=\"font-size: 12pt\">Metamorphic rock, igneous rock, geology, crust, mantle\n<p><\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 12pt\"><a class=\"el_linkBtn\" href=\"https:\/\/soran.cc.okayama-u.ac.jp\/html\/5a119f57b161ffeb74506e4da22f6611_en.html\">Directory of Researchers<\/a>&nbsp;<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h5>&nbsp;<\/h5>\n<p><a href=\"https:\/\/www.elst.okayama-u.ac.jp\/up_load_files\/areas\/areas01_earth\/img_NAKAMURA Daisuke.JPG\"><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"https:\/\/www.elst.okayama-u.ac.jp\/up_load_files\/areas\/areas01_earth\/img_NAKAMURA Daisuke.JPG\" alt=\"\" width=\"230\" height=\"146\"><\/a><\/p>\n<p>In plate convergence zones, some rocks that have been subducted to deep underground have ascended again to the surface and are now exposed, and we are estimating the pressure-temperature path such rocks have experienced.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; Rocks record the history from their formation up to the present. 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