{"id":4024,"date":"2026-09-14T09:39:13","date_gmt":"2026-09-14T00:39:13","guid":{"rendered":"https:\/\/y42u.net\/tec001\/2026\/09\/14\/chibanian-gssp-geomagnetic-reversal-field\/"},"modified":"2026-09-14T09:39:13","modified_gmt":"2026-09-14T00:39:13","slug":"chibanian-gssp-geomagnetic-reversal-field","status":"publish","type":"post","link":"https:\/\/y42u.net\/tec001\/2026\/09\/14\/chibanian-gssp-geomagnetic-reversal-field\/","title":{"rendered":"\u30c1\u30d0\u30cb\u30a2\u30f3\u3068\u306f \u2014 \u5343\u8449\u306e\u5730\u5c64\u304c\u4e16\u754c\u306e\u57fa\u6e96\u306b\u306a\u3063\u305f\u7406\u7531\u3068\u3001\u65b9\u4f4d\u78c1\u91dd\u304c\u5357\u3092\u6307\u3057\u3066\u3044\u305f77\u4e07\u5e74\u524d"},"content":{"rendered":"<style>img.autopost-single-image{width:30%;max-width:100%;height:auto;display:block;}@media (max-width: 768px){img.autopost-single-image{width:50%;}}<\/style>\n<p><img decoding=\"async\" style=\"width:80%;max-width:100%;height:auto;display:block;margin:0 auto;\" 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2020\u5e741\u670817\u65e5\u3001\u56fd\u969b\u5730\u8cea\u79d1\u5b66\u9023\u5408\uff08IUGS\uff09\u304c\u5343\u8449\u770c\u5e02\u539f\u5e02\u7530\u6df5\u306e\u990a\u8001\u5ddd\u6cbf\u3044\u306b\u9732\u51fa\u3059\u308b\u5730\u5c64\u300c\u5343\u8449\u30bb\u30af\u30b7\u30e7\u30f3\u300d\u3092\u3001\u524d\u671f\u66f4\u65b0\u4e16\u3068\u4e2d\u671f\u66f4\u65b0\u4e16\u306e\u5883\u754c\u3092\u793a\u3059\u4e16\u754c\u306e\u57fa\u6e96\u70b9\uff08GSSP\uff09\u306b\u8a8d\u5b9a\u3057\u307e\u3057\u305f\u3002\u305d\u306e\u5883\u754c\u306e\u76ee\u5370\u306b\u306a\u3063\u305f\u306e\u304c\u3001<strong>\u6700\u5f8c\u306b\u8d77\u304d\u305f\u5730\u78c1\u6c17\u306e\u9006\u8ee2<\/strong>\u3067\u3059\u3002\u3064\u307e\u308a\u3001\u3053\u306e\u5730\u5c64\u306e\u4e0b\u306e\u6642\u4ee3\u306b\u306f\u65b9\u4f4d\u78c1\u91dd\u306eN\u6975\u306f\u5357\u3092\u5411\u3044\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<hr \/>\n<h2 id=\"_1\">\u300c\u5e74\u4ee3\u306e\u540d\u524d\u300d\u3067\u306f\u306a\u304f\u300c\u57fa\u6e96\u70b9\u300d\u304c\u8a8d\u5b9a\u3055\u308c\u305f<\/h2>\n<p>\u5831\u9053\u3067\u306f\u300c\u30c1\u30d0\u30cb\u30a2\u30f3\u304c\u6c7a\u307e\u3063\u305f\u300d\u3068\u8a00\u308f\u308c\u307e\u3059\u304c\u3001\u6b63\u78ba\u306b\u8a8d\u5b9a\u3055\u308c\u305f\u306e\u306f<strong>\u5730\u5c64\u306e\u4e00\u70b9<\/strong>\u3067\u3059\u3002<\/p>\n<p>\u5730\u8cea\u5e74\u4ee3\u306e\u5883\u754c\u306f\u3001\u4e16\u754c\u306e\u3069\u3053\u304b1\u304b\u6240\u306e\u5730\u5c64\u306b\u300c\u3053\u3053\u304b\u3089\u4e0a\u304c\u65b0\u3057\u3044\u6642\u4ee3\u300d\u3068\u3044\u3046\u676d\u3092\u6253\u3064\u3053\u3068\u3067\u5b9a\u7fa9\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u676d\u304c <strong>GSSP\uff08Global Boundary Stratotype Section and Point\uff1a\u56fd\u969b\u5883\u754c\u6a21\u5f0f\u5c64\u65ad\u9762\u3068\u30dd\u30a4\u30f3\u30c8\uff09<\/strong> 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id=\"_2\">\u306a\u305c\u5730\u78c1\u6c17\u306e\u9006\u8ee2\u304c\u300c\u5883\u754c\u300d\u306b\u9078\u3070\u308c\u305f\u306e\u304b<\/h2>\n<p>\u524d\u671f\u66f4\u65b0\u4e16\u3068\u4e2d\u671f\u66f4\u65b0\u4e16\u306e\u5883\u754c\u306f\u3001\u3082\u3068\u3082\u3068<strong>\u6c17\u5019\u5909\u52d5\u306e\u5468\u671f\u304c\u5909\u308f\u3063\u305f\u6642\u671f<\/strong>\uff08\u7d04125\u4e07\u301c70\u4e07\u5e74\u524d\u306b\u3001\u5353\u8d8a\u5468\u671f\u304c4\u4e07\u5e74\u304b\u308910\u4e07\u5e74\u3078\u79fb\u3063\u305f\u300c\u4e2d\u671f\u66f4\u65b0\u4e16\u9077\u79fb\u671f\u300d\uff09\u3092\u6839\u62e0\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u305f\u3060\u3001\u3053\u306e\u5909\u5316\u306f\u3086\u308b\u3084\u304b\u3067\u3001\u300c\u4f55\u5e74\u524d\u300d\u3068\u30d4\u30f3\u30dd\u30a4\u30f3\u30c8\u3067\u7dda\u3092\u5f15\u3051\u307e\u305b\u3093\u3002\u305d\u3053\u3067\u3001\u3053\u306e\u671f\u9593\u306b\u8d77\u304d\u305f<strong>\u6700\u5f8c\u306e\u5730\u78c1\u6c17\u9006\u8ee2\u30a4\u30d9\u30f3\u30c8\uff1d\u677e\u5c71\u9006\u78c1\u6975\u671f\u304b\u3089\u30d6\u30eb\u30f3\u6b63\u78c1\u6975\u671f\u3078\u306e\u5207\u308a\u66ff\u308f\u308a\uff08\u677e\u5c71\u2013\u30d6\u30eb\u30f3\u5883\u754c\uff09<\/strong>\u3092\u3001\u5883\u754c\u4f4d\u7f6e\u306e\u76ee\u5b89\u306b\u4f7f\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<p>\u5730\u78c1\u6c17\u306e\u9006\u8ee2\u306f<strong>\u4e16\u754c\u5404\u5730\u3067\u540c\u6642\u306b\u8d77\u3053\u308b<\/strong>\u305f\u3081\u3001\u6642\u4ee3\u5883\u754c\u306e\u76ee\u5370\u3068\u3057\u3066\u90fd\u5408\u304c\u3044\u3044\u306e\u3067\u3059\u3002\u30a4\u30bf\u30ea\u30a2\u306e\u5730\u5c64\u3067\u3082\u30aa\u30fc\u30b9\u30c8\u30e9\u30ea\u30a2\u306e\u5730\u5c64\u3067\u3082\u3001\u9006\u8ee2\u306e\u8a18\u9332\u306f\u540c\u3058\u6642\u523b\u3092\u6307\u3057\u307e\u3059\u3002<\/p>\n<h3 id=\"_3\">\u677e\u5c71\u9006\u78c1\u6975\u671f\uff1d\u65b9\u4f4d\u78c1\u91dd\u304c\u5357\u3092\u6307\u3057\u3066\u3044\u305f\u6642\u4ee3<\/h3>\n<p>\u5730\u7403\u306e\u78c1\u5834\u306f\u3001\u6570\u5341\u4e07\u5e74\u301c\u6570\u767e\u4e07\u5e74\u306b\u4e00\u5ea6\u3001N\u6975\u3068S\u6975\u304c\u5165\u308c\u66ff\u308f\u308a\u307e\u3059\u3002\u677e\u5c71\u9006\u78c1\u6975\u671f\uff08\u7d04258\u4e07\u5e74\u524d\u301c77\u4e07\u5e74\u524d\uff09\u306f\u3001\u3044\u307e\u3068\u306f\u9006\u5411\u304d\u3060\u3063\u305f\u671f\u9593\u3067\u3059\u3002\u3053\u306e\u6642\u4ee3\u306b\u65b9\u4f4d\u78c1\u91dd\u3092\u6301\u3061\u8fbc\u3093\u3060\u3089\u3001<strong>N\u6975\u306f\u5357\u3092\u6307\u3057\u3066\u3044\u305f<\/strong>\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u300c\u677e\u5c71\u300d\u306f\u3001\u3053\u306e\u9006\u8ee2\u73fe\u8c61\u30921920\u5e74\u4ee3\u306b\u4e16\u754c\u3067\u521d\u3081\u3066\u6307\u6458\u3057\u305f\u5730\u7403\u7269\u7406\u5b66\u8005\u30fb\u677e\u5c71\u57fa\u7bc4\u306b\u7531\u6765\u3057\u307e\u3059\u3002\u5730\u8cea\u5e74\u4ee3\u306e\u56fd\u969b\u7684\u306a\u7528\u8a9e\u306b\u65e5\u672c\u4eba\u540d\u304c\u5165\u3063\u3066\u3044\u308b\u3001\u6570\u5c11\u306a\u3044\u4f8b\u3067\u3059\u3002<\/p>\n<hr \/>\n<h2 id=\"_4\">\u5343\u8449\u30bb\u30af\u30b7\u30e7\u30f3\u304c\u9078\u3070\u308c\u305f\u6c7a\u3081\u624b<\/h2>\n<p>\u4e0b\u90e8\u66f4\u65b0\u7d71\u2015\u4e2d\u90e8\u66f4\u65b0\u7d71\u5883\u754c\u306eGSSP\u306b\u306f\u3001\u30a4\u30bf\u30ea\u30a2\u5357\u90e8\u306e2\u304b\u6240\uff08\u30f4\u30a1\u30ec\u30fb\u30c7\u30fb\u30de\u30f3\u30b1\u3001\u30e2\u30f3\u30bf\u30eb\u30d0\u30fc\u30ce\u30fb\u30a4\u30aa\u30cb\u30b3\uff09\u3082\u5019\u88dc\u306b\u6319\u304c\u3063\u3066\u3044\u307e\u3057\u305f\u3002\u305d\u308c\u3067\u3082\u5343\u8449\u304c\u9078\u3070\u308c\u305f\u306e\u306b\u306f\u3001\u5730\u5c64\u3068\u3057\u3066\u306e\u6761\u4ef6\u304c\u305d\u308d\u3063\u3066\u3044\u305f\u304b\u3089\u3067\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u6761\u4ef6<\/th>\n<th>\u5343\u8449\u30bb\u30af\u30b7\u30e7\u30f3\u306e\u72b6\u6cc1<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u5730\u78c1\u6c17\u9006\u8ee2\u306e\u8a18\u9332<\/td>\n<td>\u6df1\u6d77\u3067\u9759\u304b\u306b\u5806\u7a4d\u3057\u305f\u6ce5\u5ca9\u304c\u4e3b\u4f53\u3067\u3001\u78c1\u6027\u9271\u7269\u306e\u4f9b\u7d66\u3082\u591a\u304f\u3001\u9ad8\u89e3\u50cf\u5ea6\u306e\u53e4\u5730\u78c1\u6c17\u8a18\u9332\u304c\u6b8b\u308b<\/td>\n<\/tr>\n<tr>\n<td>\u5e74\u4ee3\u306e\u7d76\u5bfe\u5024<\/td>\n<td>\u5883\u754c\u306e\u3059\u3050\u4e0b\u306b<strong>\u767d\u5c3e\u706b\u5c71\u7070\u5c64\uff08Byk-E\uff09<\/strong>\u304c\u631f\u307e\u308b\u3002\u30b8\u30eb\u30b3\u30f3\u306e\u30a6\u30e9\u30f3\u2013\u30c8\u30ea\u30a6\u30e0\u5e74\u4ee3\u6e2c\u5b9a\u3067<strong>77.3\u00b10.7\u4e07\u5e74\u524d<\/strong><\/td>\n<\/tr>\n<tr>\n<td>\u72ec\u7acb\u3057\u305f\u5e74\u4ee3\u306e\u88cf\u53d6\u308a<\/td>\n<td>\u6709\u5b54\u866b\u306e\u9178\u7d20\u540c\u4f4d\u4f53\u6bd4\uff0b\u5929\u6587\u5e74\u4ee3\u88dc\u6b63\u6cd5\u304b\u3089<strong>77.4\u4e07\u5e74\u524d<\/strong>\u304c\u5c0e\u304b\u308c\u3001\u653e\u5c04\u5e74\u4ee3\u3068\u8aa4\u5dee\u7bc4\u56f2\u3067\u4e00\u81f4<\/td>\n<\/tr>\n<tr>\n<td>\u6c17\u5019\u8a18\u9332\u306e\u4ee3\u8868\u6027<\/td>\n<td>\u592a\u5e73\u6d0b\u306b\u9762\u3057\u3001\u9ed2\u6f6e\u3068\u89aa\u6f6e\u306e\u5883\u754c\u304c\u5357\u5317\u306b\u52d5\u304f\u5834\u6240\u3002\u5730\u4e2d\u6d77\u306e\u5019\u88dc\u5730\u3088\u308a<strong>\u6c4e\u4e16\u754c\u7684\u306a\u6c17\u5019\u5909\u52d5<\/strong>\u3092\u53cd\u6620\u3057\u3084\u3059\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u9678\u4e0a\u3067\u898b\u3089\u308c\u308b\u3053\u3068<\/td>\n<td>\u4e0a\u7dcf\u5c64\u7fa4\u306f\u9686\u8d77\u901f\u5ea6\u304c\u901f\u304f\u3001\u6bd4\u8f03\u7684\u65b0\u3057\u3044\u6df1\u6d77\u5806\u7a4d\u7269\u304c\u9678\u4e0a\u306b\u9732\u51fa\u3057\u3066\u3044\u308b\u4e16\u754c\u7684\u306b\u3082\u5e0c\u6709\u306a\u5834\u6240<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>GSSP\u306e\u5883\u754c\u306f\u3001\u3053\u306e<strong>\u767d\u5c3e\u706b\u5c71\u7070\u5c64\u306e\u4e0b\u9762<\/strong>\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5730\u78c1\u6c17\u306e\u9006\u8ee2\u305d\u306e\u3082\u306e\u306f\u76ee\u3067\u898b\u3048\u307e\u305b\u3093\u304c\u3001\u706b\u5c71\u7070\u5c64\u306f\u8089\u773c\u3067\u8ffd\u3048\u308b\u306e\u3067\u3001\u73fe\u5730\u3067\u300c\u3053\u3053\u304c\u5883\u754c\u300d\u3068\u6307\u3055\u305b\u308b\u76ee\u5370\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u306a\u304a\u3001\u5be9\u67fb\u306f4\u6bb5\u968e\uff08\u4f5c\u696d\u90e8\u4f1a \u2192 \u7b2c\u56db\u7d00\u5c64\u5e8f\u5c0f\u59d4\u54e1\u4f1a \u2192 \u56fd\u969b\u5c64\u5e8f\u59d4\u54e1\u4f1a \u2192 IUGS\uff09\u3067\u3001\u305d\u308c\u305e\u308c60%\u4ee5\u4e0a\u306e\u5f97\u7968\u304c\u5fc5\u8981\u3067\u3057\u305f\u30022017\u5e746\u6708\u306e\u7533\u8acb\u304b\u3089\u6700\u7d42\u6c7a\u5b9a\u307e\u30672\u5e74\u534a\u4ee5\u4e0a\u304b\u304b\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<hr \/>\n<h2 id=\"_5\">\u73fe\u5834\u306e\u6e2c\u4f4d\u3068\u3001\u3069\u3053\u3067\u3064\u306a\u304c\u308b\u306e\u304b<\/h2>\n<p>\u53e4\u3044\u5730\u5c64\u306e\u8a71\u306b\u898b\u3048\u307e\u3059\u304c\u3001GNSS\u6e2c\u4f4d\u30fb\u6e2c\u91cf\u306e\u5b9f\u52d9\u304b\u3089\u898b\u3066\u3082\u63a5\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3 id=\"1\">1. \u78c1\u5317\u306f\u300c\u3044\u307e\u3082\u52d5\u3044\u3066\u3044\u308b\u300d<\/h3>\n<p>\u5730\u78c1\u6c17\u304c\u9006\u8ee2\u3059\u308b\u3068\u3044\u3046\u4e8b\u5b9f\u306f\u3001<strong>\u5730\u7403\u306e\u78c1\u5834\u304c\u56fa\u5b9a\u3055\u308c\u305f\u57fa\u6e96\u3067\u306f\u306a\u3044<\/strong>\u3053\u3068\u306e\u6975\u7aef\u306a\u4f8b\u3067\u3059\u3002\u9006\u8ee2\u3057\u306a\u3044\u5e73\u6642\u3067\u3082\u3001\u78c1\u5317\u306e\u4f4d\u7f6e\u306f\u6bce\u5e74\u52d5\u3044\u3066\u3044\u307e\u3059\u3002\u65e5\u672c\u56fd\u5185\u306e\u504f\u89d2\uff08\u771f\u5317\u3068\u78c1\u5317\u306e\u5dee\uff09\u306f\u897f\u30784\u301c10\u5ea6\u307b\u3069\u3042\u308a\u3001\u305d\u306e\u5024\u306f\u5730\u57df\u3068\u5e74\u306b\u3088\u3063\u3066\u5909\u308f\u308a\u307e\u3059\u3002<\/p>\n<p>\u73fe\u5834\u3067\u65b9\u4f4d\u3092\u6271\u3046\u3068\u304d\u3001\u30b3\u30f3\u30d1\u30b9\u306e\u5317\u3068\u3001\u56f3\u9762\u306e\u5ea7\u6a19\u5317\u3068\u3001\u5730\u7403\u306e\u771f\u5317\u306f\u4e00\u81f4\u3057\u307e\u305b\u3093\u3002\u5730\u78c1\u6c17\u306e\u9577\u671f\u5909\u52d5\u3092\u6271\u3046\u30e2\u30c7\u30eb\uff08IGRF\uff09\u3068\u56fd\u571f\u5730\u7406\u9662\u306e\u78c1\u6c17\u56f3\u304c\u5b9a\u671f\u7684\u306b\u66f4\u65b0\u3055\u308c\u308b\u306e\u306f\u3001\u3053\u306e\u300c\u52d5\u304f\u57fa\u6e96\u300d\u306b\u8ffd\u5f93\u3059\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n<h3 id=\"2\">2. \u300c\u57fa\u6e96\u306f\u4e0d\u5909\u3067\u306f\u306a\u3044\u300d\u3068\u3044\u3046\u69cb\u9020<\/h3>\n<p>\u5730\u8cea\u5e74\u4ee3\u306e\u57fa\u6e96\u70b9\u304c2020\u5e74\u306b\u65b0\u3057\u304f\u6253\u305f\u308c\u305f\u3088\u3046\u306b\u3001\u6e2c\u5730\u306e\u57fa\u6e96\u3082\u66f4\u65b0\u3055\u308c\u307e\u3059\u3002\u65e5\u672c\u306e\u6e2c\u5730\u7cfb\u306f\u65e7\u65e5\u672c\u6e2c\u5730\u7cfb\uff08TOKYO\uff09\u304b\u3089\u65e5\u672c\u6e2c\u5730\u7cfb2000\uff08JGD2000\uff09\u3001\u65e5\u672c\u6e2c\u5730\u7cfb2011\uff08JGD2011\uff09\u3001\u305d\u3057\u3066\u6e2c\u5730\u6210\u679c2024\uff08JGD2024\uff09\u3078\u3068\u79fb\u3063\u3066\u304d\u307e\u3057\u305f\u3002\u6a19\u9ad8\u306e\u6210\u679c\u30822025\u5e744\u6708\u306b\u6539\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u5730\u5c64\u306f\u300c\u904e\u53bb\u306e\u78c1\u5834\u306e\u5411\u304d\u300d\u3092\u8a18\u9332\u3068\u3057\u3066\u6b8b\u3057\u307e\u3059\u3002\u5ea7\u6a19\u6210\u679c\u306f\u300c\u305d\u306e\u6642\u70b9\u306e\u5730\u9762\u306e\u4f4d\u7f6e\u300d\u3092\u8a18\u9332\u3068\u3057\u3066\u6b8b\u3057\u307e\u3059\u3002\u3069\u3061\u3089\u3082\u3001\u3042\u3068\u304b\u3089\u8aad\u3080\u3068\u304d\u306b\u306f<strong>\u3044\u3064\u306e\u57fa\u6e96\u304b<\/strong>\u3092\u78ba\u304b\u3081\u306a\u3044\u3068\u610f\u5473\u304c\u53d6\u308c\u307e\u305b\u3093\u3002GNSS\u6e2c\u91cf\u3067\u5143\u671f\u3068\u4eca\u671f\u3092\u533a\u5225\u3059\u308b\u306e\u3068\u3001\u5730\u5c64\u304b\u3089\u677e\u5c71\u671f\u3068\u30d6\u30eb\u30f3\u671f\u3092\u8aad\u307f\u5206\u3051\u308b\u306e\u306f\u3001\u540c\u3058\u4f5c\u6cd5\u3067\u3059\u3002<\/p>\n<h3 id=\"3\">3. \u623f\u7dcf\u534a\u5cf6\u306f\u3001\u3044\u307e\u3082\u52d5\u3044\u3066\u3044\u308b\u5834\u6240<\/h3>\n<p>\u5343\u8449\u30bb\u30af\u30b7\u30e7\u30f3\u3092\u542b\u3080\u4e0a\u7dcf\u5c64\u7fa4\u304c\u9678\u4e0a\u3067\u898b\u3089\u308c\u308b\u306e\u306f\u3001\u3053\u306e\u5730\u57df\u306e\u9686\u8d77\u901f\u5ea6\u304c\u901f\u3044\u304b\u3089\u3067\u3059\u3002\u623f\u7dcf\u534a\u5cf6\u306f\u76f8\u6a21\u30c8\u30e9\u30d5\u6cbf\u3044\u306e\u30d7\u30ec\u30fc\u30c8\u5883\u754c\u306b\u8fd1\u304f\u3001\u96fb\u5b50\u57fa\u6e96\u70b9\u306e\u30c7\u30fc\u30bf\u3067\u3082\u7d99\u7d9a\u7684\u306a\u5909\u52d5\u304c\u89b3\u6e2c\u3055\u308c\u308b\u9818\u57df\u306b\u3042\u308a\u307e\u3059\u300277\u4e07\u5e74\u524d\u306e\u5730\u5c64\u304c\u5730\u8868\u3067\u8aad\u3081\u308b\u3068\u3044\u3046\u4e8b\u5b9f\u81ea\u4f53\u304c\u3001\u3053\u306e\u5730\u57df\u306e\u5730\u6bbb\u5909\u52d5\u306e\u901f\u3055\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<hr \/>\n<h2 id=\"_6\">\u307e\u3068\u3081<\/h2>\n<ul>\n<li>\u30c1\u30d0\u30cb\u30a2\u30f3\u306f <strong>77.4\u4e07\u5e74\u524d\u301c12.9\u4e07\u5e74\u524d<\/strong>\u306e\u5730\u8cea\u5e74\u4ee3\u30022020\u5e741\u670817\u65e5\u306bIUGS\u304cGSSP\u3092\u8a8d\u5b9a\u3057\u305f<\/li>\n<li>\u8a8d\u5b9a\u3055\u308c\u305f\u306e\u306f\u5e74\u4ee3\u540d\u3067\u306f\u306a\u304f\u3001<strong>\u5343\u8449\u770c\u5e02\u539f\u5e02\u7530\u6df5\u306e\u5343\u8449\u30bb\u30af\u30b7\u30e7\u30f3\u3068\u3044\u3046\u5730\u5c64\u306e\u4e00\u70b9<\/strong>\u3002\u65e5\u672c\u521d\u306eGSSP\u3067\u3001116\u5883\u754c\u4e2d74\u756a\u76ee<\/li>\n<li>\u5883\u754c\u306e\u76ee\u5370\u306f<strong>\u6700\u5f8c\u306e\u5730\u78c1\u6c17\u9006\u8ee2\uff08\u677e\u5c71\u2013\u30d6\u30eb\u30f3\u5883\u754c\uff09<\/strong>\u3002\u305d\u308c\u4ee5\u524d\u306f\u65b9\u4f4d\u78c1\u91dd\u306eN\u6975\u304c\u5357\u3092\u6307\u3057\u3066\u3044\u305f<\/li>\n<li>\u6c7a\u3081\u624b\u306f\u3001\u6df1\u6d77\u6ce5\u5ca9\u306b\u3088\u308b\u9ad8\u89e3\u50cf\u5ea6\u306e\u53e4\u5730\u78c1\u6c17\u8a18\u9332\u3068\u3001<strong>\u767d\u5c3e\u706b\u5c71\u7070\u5c64\u306e77.3\u00b10.7\u4e07\u5e74\u524d<\/strong>\u3068\u3044\u3046\u7d76\u5bfe\u5e74\u4ee3\u3001\u305d\u3057\u3066\u5929\u6587\u5e74\u4ee3\u88dc\u6b63\u6cd5\u306b\u3088\u308b77.4\u4e07\u5e74\u524d\u3068\u3044\u3046\u72ec\u7acb\u3057\u305f\u88cf\u53d6\u308a<\/li>\n<li>\u300c\u4e16\u754c\u3067\u4f7f\u3046\u4f53\u7cfb\u3092\u73fe\u5730\u306e1\u70b9\u3067\u5b9a\u7fa9\u3059\u308b\u300d\u69cb\u9020\u306f\u3001\u65e5\u672c\u7d4c\u7def\u5ea6\u539f\u70b9\u30fb\u65e5\u672c\u6c34\u6e96\u539f\u70b9\u3068\u540c\u3058\u3002<strong>\u57fa\u6e96\u306f\u4e0d\u5909\u3067\u306f\u306a\u304f\u3001\u66f4\u65b0\u3055\u308c\u3066\u3044\u304f<\/strong><\/li>\n<\/ul>\n<hr \/>\n<h3 id=\"_7\">\u51fa\u5178<\/h3>\n<ul>\n<li>\u65e5\u672c\u521d\u306eGSSP\uff1a\u5343\u8449\u30bb\u30af\u30b7\u30e7\u30f3\u3068\u30c1\u30d0\u30cb\u30a2\u30f3\uff08\u677f\u6728\u62d3\u4e5f, 2020\uff09\u2014 \u7523\u696d\u6280\u8853\u7dcf\u5408\u7814\u7a76\u6240 \u5730\u8cea\u8abf\u67fb\u7dcf\u5408\u30bb\u30f3\u30bf\u30fc\u300eGSJ\u5730\u8cea\u30cb\u30e5\u30fc\u30b9\u300fVol.9 No.7: https:\/\/www.gsj.jp\/data\/gcn\/gsj_cn_vol9.no7_p.185-191.pdf<\/li>\n<li>\u30c1\u30d0\u30cb\u30a2\u30f3GSSP\u306e\u7279\u5fb4\u3068\u3001\u305d\u306e\u5b66\u8853\u4e0a\u306e\u610f\u7fa9\uff08\u5ca1\u7530\u8aa0\uff09\u2014 J-STAGE: https:\/\/www.jstage.jst.go.jp\/article\/tits\/27\/11\/27_11_73\/_article\/-char\/ja\/<\/li>\n<li>\u300c\u30c1\u30d0\u30cb\u30a2\u30f3\u300d\u306e\u63d0\u6848\u7533\u8acb\u66f8\u304c\u8ad6\u6587\u8a8c\u306e\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3067\u516c\u958b\u3055\u308c\u307e\u3057\u305f \u2014 \u56fd\u7acb\u6975\u5730\u7814\u7a76\u6240: https:\/\/www.nipr.ac.jp\/info\/notice\/20210202.html<\/li>\n<li>\u5730\u7403\u53f2\u306b\u30c1\u30d0\u30cb\u30a2\u30f3\u304c\u8a95\u751f\uff01 \u2014 \u5343\u8449\u770c\u7acb\u4e2d\u592e\u535a\u7269\u9928: https:\/\/www.chiba-muse.or.jp\/NATURAL\/special\/chibanian\/index_chibanian.htm<\/li>\n<li>\u5730\u78c1\u6c17\u9006\u8ee2\u3068\u30c1\u30d0\u30cb\u30a2\u30f3 \u2014 \u5c71\u53e3\u5927\u5b66\u7406\u5b66\u90e8: https:\/\/www.yamaguchi-u.ac.jp\/sci\/news\/blog\/news\/5089\/<\/li>\n<\/ul>\n<hr \/>\n<h2 id=\"_8\">\u6b21\u306b\u78ba\u8a8d\u3059\u308b<\/h2>\n<ul>\n<li><a href=\"https:\/\/y42u.net\/tec001\/2026\/09\/01\/japan-arc-sea-of-japan-opening-rotation-field\/\">\u65e5\u672c\u6d77\u306f\u3069\u3046\u3084\u3063\u3066\u958b\u3044\u305f\u306e\u304b \u2014 \u6771\u5317\u65e5\u672c\u3068\u897f\u5357\u65e5\u672c\u306e\u56de\u8ee2<\/a> \u2014 \u65e5\u672c\u5217\u5cf6\u304c\u56de\u8ee2\u3057\u306a\u304c\u3089\u958b\u3044\u305f\u3053\u3068\u3092\u793a\u3057\u305f\u8a3c\u62e0\u3082\u3001\u672c\u8a18\u4e8b\u3068\u540c\u3058<strong>\u5ca9\u77f3\u306b\u6b8b\u3063\u305f\u53e4\u5730\u78c1\u6c17<\/strong>\u3067\u3059<\/li>\n<li><a href=\"https:\/\/y42u.net\/tec001\/2026\/08\/22\/median-tectonic-line-crustal-strain-field\/\">\u4e2d\u592e\u69cb\u9020\u7dda\u306e\u4e21\u5074\u3067\u3001\u5730\u6bbb\u306f\u3069\u308c\u3060\u3051\u9055\u3046\u901f\u3055\u3067\u52d5\u3044\u3066\u3044\u308b\u304b<\/a> \u2014 \u5730\u8cea\u306e\u5883\u754c\u3068\u3001GNSS\u3067\u5b9f\u6e2c\u3067\u304d\u308b\u3044\u307e\u306e\u52d5\u304d\u3092\u91cd\u306d\u3066\u898b\u308b\u8a71\u3067\u3059<\/li>\n<li><a href=\"https:\/\/y42u.net\/tec001\/2026\/09\/12\/beppu-shimabara-graben-kyushu-rift-field\/\">\u4e5d\u5dde\u306f\u672c\u5f53\u306b2\u3064\u306b\u5272\u308c\u308b\u306e\u304b \u2014 \u5225\u5e9c\u2013\u5cf6\u539f\u5730\u6e9d\u5e2f\u3068\u300c50\u4e07\u5e74\u5f8c\u300d<\/a> \u2014 \u6570\u5341\u4e07\u5e74\u30b9\u30b1\u30fc\u30eb\u306e\u5730\u8cea\u306e\u8a71\u3092\u3001\u96fb\u5b50\u57fa\u6e96\u70b9\u306e\u89b3\u6e2c\u5024\u304b\u3089\u78ba\u304b\u3081\u308b\u624b\u9806\u304c\u5206\u304b\u308a\u307e\u3059<\/li>\n<li><a href=\"https:\/\/gmp.y42u.net\/2026\/07\/27\/magnetic-north-igrf-declination-model\/\">\u65b9\u4f4d\u78c1\u91dd\u306e\u5317\u306f\u3069\u3053\u3092\u6307\u3059\u306e\u304b \u2014 \u504f\u89d2\u3068IGRF\u30e2\u30c7\u30eb\uff08GeoPrism JP\uff09<\/a> \u2014 \u9006\u8ee2\u3057\u306a\u3044\u5e73\u6642\u3067\u3082\u78c1\u5317\u304c\u6bce\u5e74\u52d5\u304f\u3053\u3068\u3001\u65e5\u672c\u306e\u504f\u89d2\u304c\u5730\u57df\u3067\u3069\u3046\u9055\u3046\u304b\u3092\u56f3\u3067\u78ba\u8a8d\u3067\u304d\u307e\u3059<\/li>\n<li><a href=\"https:\/\/gmp.y42u.net\/2026\/07\/02\/japan-origin-points-learning\/\">\u65e5\u672c\u306e\u539f\u70b9\u306f\u3069\u3053\u306b\u3042\u308b\u306e\u304b \u2014 \u7d4c\u7def\u5ea6\u539f\u70b9\u3068\u6c34\u6e96\u539f\u70b9\uff08GeoPrism JP\uff09<\/a> \u2014 \u300c\u4e16\u754c\u3067\u4f7f\u3046\u4f53\u7cfb\u3092\u73fe\u5730\u306e1\u70b9\u3067\u5b9a\u7fa9\u3059\u308b\u300d\u69cb\u9020\u3092\u3001\u6e2c\u5730\u5074\u306e\u5b9f\u4f8b\u3067\u898b\u3089\u308c\u307e\u3059<\/li>\n<li>\u66f8\u7c4d\u3067\u307e\u3068\u3081\u3066\u5b66\u3076: <a href=\"https:\/\/www.amazon.co.jp\/dp\/B0HF4SJC1L\">\u300e\u65e5\u672c\u306e\u6e2c\u5730\u7cfbQ&amp;A\u300f\u7b2c4\u7ae0\u300c\u5730\u56f3\u306e\u3086\u304c\u307f\u3068\u4e09\u3064\u306e\u5317\u300d<\/a>\uff08Kindle Unlimited\u5bfe\u5fdc\uff09<\/li>\n<\/ul>\n<hr \/>\n<blockquote><p>\n<strong>\u958b\u767a\u8005\u3088\u308a<\/strong>: \u30a2\u30d7\u30ea\u30fbKindle\u672c\u30fb\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306e\u4e00\u89a7\u306f <a href=\"https:\/\/github.com\/amru195704\">GitHub: amru195704<\/a> \u306b\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002\n<\/p><\/blockquote>\n<hr \/>\n<blockquote><p>\n<strong>\u304a\u9858\u3044<\/strong><br \/>\n\u672c\u8a18\u4e8b\u306e\u60c5\u5831\u306f\u53c2\u8003\u76ee\u7684\u3067\u63b2\u8f09\u3057\u3066\u304a\u308a\u3001\u6b63\u78ba\u6027\u30fb\u5b8c\u5168\u6027\u3092\u4fdd\u8a3c\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u8aa4\u8a18\u30fb\u4e0d\u6b63\u78ba\u306a\u60c5\u5831\u304c\u3054\u3056\u3044\u307e\u3057\u305f\u3089\u3001\u30b3\u30e1\u30f3\u30c8\u6b04\u3088\u308a\u3054\u6307\u6458\u3044\u305f\u3060\u3051\u308c\u3070\u3001\u78ba\u8a8d\u306e\u3046\u3048\u4fee\u6b63\u3044\u305f\u3057\u307e\u3059\u3002\n<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>\u30c1\u30d0\u30cb\u30a2\u30f3\u3068\u306f \u2014 \u5343\u8449\u306e\u5730\u5c64\u304c\u4e16\u754c\u306e\u57fa\u6e96\u306b\u306a\u3063\u305f\u7406\u7531\u3068\u3001\u65b9\u4f4d\u78c1\u91dd\u304c\u5357\u3092\u6307\u3057\u3066\u3044\u305f77\u4e07\u5e74\u524d \u30c1\u30d0\u30cb\u30a2\u30f3\u306f\u300177.4\u4e07\u5e74\u524d\u304b\u308912.9\u4e07\u5e74\u524d\u307e\u3067\u306e\u5730\u8cea\u5e74\u4ee3\u306e\u540d\u524d\u3067\u3059\u3002 2020\u5e741\u670817\u65e5\u3001\u56fd\u969b\u5730\u8cea\u79d1\u5b66\u9023\u5408\uff08IUGS\uff09\u304c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4023,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"sns_share_botton_hide":"","vkExUnit_sns_title":"","_vk_print_noindex":"","sitemap_hide":"","_veu_custom_css":"","veu_display_promotion_alert":"","vkexunit_cta_each_option":"","_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[17,537,536,542,540,460,538,384,539,416,541],"class_list":["post-4024","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-geodiveexa","tag-gssp","tag-536","tag-542","tag-540","tag-460","tag-538","tag-384","tag-539","tag-416","tag-541"],"veu_head_title_object":{"title":"","add_site_title":""},"jetpack_publicize_connections":[],"jetpack-related-posts":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/y42u.net\/tec001\/wp-content\/uploads\/2026\/09\/gde-chibanian-gssp-geomagnetic-reversal-field.jpeg","_links":{"self":[{"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/posts\/4024","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/comments?post=4024"}],"version-history":[{"count":0,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/posts\/4024\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/media\/4023"}],"wp:attachment":[{"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/media?parent=4024"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/categories?post=4024"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/tags?post=4024"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}