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\/<sup>144<\/sup>Nd\u306e\u6bd4\u3067\u8868\u3059\u306e\u3067\u3001\u5ca9\u77f3\u4e2d\u306e<sup>143<\/sup>Nd\u306e\u7dcf\u91cf\u306e\u9055\u3044\u304c\u3001\u5ca9\u77f3\u306e\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u306e\u9055\u3044\u3092\u4f5c\u308a\u307e\u3059\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070\u3001Sm\/Nd\u6bd4\u304c\u4f4e\u3044\u82b1\u5d17\u5ca9\u3067\u306f<sup>147<\/sup>Sm\u2192<sup>143<\/sup>Nd\u3078\u306e\u58ca\u5909\u306b\u3088\u308b<sup>143<\/sup>Nd\u91cf\u306f\u5c11\u306a\u3044\u306e\u3067\u3001\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u306f\u76f8\u5bfe\u7684\u306b\u4f4e\u304f\u306a\u308a\u307e\u3059\u3002\u9006\u306b\u3001Sm\/Nd\u6bd4\u306e\u9ad8\u3044\u706b\u5c71\u5ca9\u3067\u306f<sup>147<\/sup>Sm\u2192<sup>143<\/sup>Nd\u3078\u306e\u58ca\u5909\u91cf\u304c\u591a\u304f\u751f\u6210\u3055\u308c\u308b<sup>143<\/sup>Nd\u91cf\u3082\u591a\u304f\u306a\u308b\u305f\u3081\u3001\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u5ca9\u77f3\u306e\u7a2e\u985e\u3084\u5ca9\u77f3\u306e\u53e4\u3055\u306b\u3088\u3063\u3066\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u306f\u5909\u5316\u3057\u3001\u305d\u306e\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u306f\u6cb3\u5ddd\u3092\u901a\u3058\u3066\u96a3\u63a5\u3059\u308b\u6d77\u6c34\u306e\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u306b\u3082\u5f71\u97ff\u3092\u4e0e\u3048\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u5ca9\u77f3\u306e\u5f71\u97ff\u3092\u53d7\u3051\u308b\u300c\u6d77\u6c34\u306e\u7531\u6765\u300d\u306b\u3088\u3063\u3066\u3001\u73fe\u5728\u306e\u6d77\u6d0b\u3067\u306f\u3001\u5317\u5927\u897f\u6d0b\u3092\u6d41\u308c\u308b\u6df1\u5c64\u6c34\u306f-12\u03b5Nd\u3001\u5357\u6975\u5468\u8fba\u3092\u6d41\u308c\u308b\u5e95\u5c64\u6c34\u306f-9\u03b5Nd\u3001\u5317\u592a\u5e73\u6d0b\u3092\u6d41\u308c\u308b\u6df1\u5c64\u6c34\u306f-4\u03b5Nd\u306e\u3088\u3046\u306b\u305d\u308c\u305e\u308c\u7570\u306a\u3063\u305f\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u306e\u5024\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_8715\" aria-describedby=\"caption-attachment-8715\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-8715\" src=\"https:\/\/academist-cf.com\/journal\/wp-content\/uploads\/2018\/10\/002-3.jpg\" alt=\"\" width=\"600\" height=\"383\" srcset=\"https:\/\/academist-cf.com\/journal\/wp-content\/uploads\/2018\/10\/002-3.jpg 600w, https:\/\/academist-cf.com\/journal\/wp-content\/uploads\/2018\/10\/002-3-300x192.jpg 300w, https:\/\/academist-cf.com\/journal\/wp-content\/uploads\/2018\/10\/002-3-235x150.jpg 235w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-8715\" class=\"wp-caption-text\">\u6d77\u6c34\u306e\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u306e\u7279\u5fb4\u3092\u8868\u3059\u30a4\u30e9\u30b9\u30c8<br \/>\u6d77\u6c34\u306e\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u306f\u3001\u96a3\u63a5\u3059\u308b\u5f8c\u80cc\u5730\u306e\u5ca9\u77f3\u306e\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u3092\u53cd\u6620\u3059\u308b\u3002\u82b1\u5d17\u5ca9\u304c\u9732\u51fa\u3059\u308b\u6240\u3067\u306f\u3001\u4f4e\u3044\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u3092\u3082\u3063\u305f\u30cd\u30aa\u30b8\u30e0\u304c\u6cb3\u5ddd\u304b\u3089\u6d77\u6d0b\u3078\u6d41\u51fa\u3059\u308b\u305f\u3081\u3001\u6cbf\u5cb8\u57df\u306e\u6d77\u6c34\u3082\u4f4e\u3044\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u3092\u6301\u3064\u3002\u706b\u5c71\u5ca9\u304c\u5206\u5e03\u3059\u308b\u5834\u5408\u306f\u3001\u6d77\u6c34\u306f\u9ad8\u3044\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u3092\u6301\u3064\u3002\u6d77\u5e95\u4ed8\u8fd1\u306e\u9b5a\u306e\u6b6f\uff65\u9aa8\u306e\u5316\u77f3\u306b\u306f\u6d77\u6c34\u306e\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u304c\u8a18\u9332\u3055\u308c\u308b\u3002<\/figcaption><\/figure>\n<h3>\u9b5a\u306e\u9aa8\u306b\u8a18\u9332\u3055\u308c\u308b\u6d77\u6c34\u306e\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4<\/h3>\n<p>\u9678\u304b\u3089\u9060\u304f\u96e2\u308c\u305f\u6d77\u6d0b\u5e95\u3067\u306f\u30011000\u5e74\u9593\u3067\u304a\u3088\u305d1cm\u7a0b\u5ea6\u306e\u65e9\u3055\u3067\u5806\u7a4d\u7269\u304c\u964d\u308a\u7a4d\u3082\u3063\u3066\u3044\u304d\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u5806\u7a4d\u7269\u309250cc\u7a0b\u5ea6\u53d6\u3063\u3066\u9855\u5fae\u93e1\u3067\u306e\u305e\u304f\u3068\u30010.1\uff5e0.3mm\u7a0b\u5ea6\u306e\u9b5a\u306e\u6b6f\u3084\u9aa8\u7247\u3092\u6570\u500b\uff5e\u767e\u500b\u7a0b\u5ea6\u898b\u3064\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_8716\" aria-describedby=\"caption-attachment-8716\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-8716\" src=\"https:\/\/academist-cf.com\/journal\/wp-content\/uploads\/2018\/10\/003-1.jpg\" alt=\"\" width=\"600\" height=\"337\" srcset=\"https:\/\/academist-cf.com\/journal\/wp-content\/uploads\/2018\/10\/003-1.jpg 600w, https:\/\/academist-cf.com\/journal\/wp-content\/uploads\/2018\/10\/003-1-300x169.jpg 300w, https:\/\/academist-cf.com\/journal\/wp-content\/uploads\/2018\/10\/003-1-240x135.jpg 240w, https:\/\/academist-cf.com\/journal\/wp-content\/uploads\/2018\/10\/003-1-267x150.jpg 267w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-8716\" class=\"wp-caption-text\">\u6d77\u5e95\u5806\u7a4d\u7269\u304b\u3089\u7523\u51fa\u3059\u308b\u9b5a\u306e\u6b6f\u3084\u9aa8\u7247\u306e\u5316\u77f3\u3002\u591a\u304f\u306e\u6b6f\uff65\u9aa8\u7247\u5316\u77f3\u306f\u304a\u3088\u305d0.1\uff5e2mm\u7a0b\u5ea6\u306e\u5927\u304d\u3055\u3002<\/figcaption><\/figure>\n<p>0.1\uff5e0.3mm\u306e\u9aa8\u7247\u304c\u6570\u5341\u500b\u3068\u3044\u3046\u306e\u306f\u3001\u91cf\u3068\u3057\u3066\u306f\u975e\u5e38\u306b\u5c11\u306a\u3044\u3067\u3059\u304c\u3001\u9b5a\u306e\u6b6f\u30fb\u9aa8\u306b\u306f\u6d77\u6c34\u306e\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u60c5\u5831\u304c\u3057\u3063\u304b\u308a\u3068\u8a18\u9332\u3055\u308c\u307e\u3059\u3002\u3055\u3089\u306b\u6d77\u5e95\u9762\u3067\u6b6f\u30fb\u9aa8\u306b\u8a18\u9332\u3055\u308c\u305f\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u306f\u3001\u4eee\u306b\u6b6f\u30fb\u9aa8\u304c\u6d77\u5e95\u9762\u4e0b400m\u307e\u3067\u57cb\u6ca1\u3057\u305f\u3068\u3057\u3066\u3082\u3001\u6ce5\u306e\u4e2d\u30671000\u4e07\u5e74\u7d4c\u3063\u305f\u3068\u3057\u3066\u3082\u4fdd\u6301\u3055\u308c\u308b\u306e\u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u3042\u308b\u6d77\u57df\u306e\u3072\u3068\u3064\u306e\u5730\u70b9\u3067\u6d77\u5e95\u5806\u7a4d\u7269\u3092\u63a1\u53d6\u3057\u3001\u5404\u6642\u4ee3\u306e\u5806\u7a4d\u7269\u304b\u3089\u6b6f\u30fb\u9aa8\u3092\u62fe\u3044\u96c6\u3081\u3001\u305d\u308c\u3089\u306e\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u3092\u5206\u6790\u3059\u308c\u3070\u3001\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u304b\u3089\u5f53\u6642\u6d77\u5e95\u9762\u3092\u6d41\u308c\u3066\u3044\u305f\u300c\u6d77\u6c34\u306e\u7531\u6765\u300d\u3092\u77e5\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u65e5\u672c\u6d77\u306f\u3001\u3044\u3064\u592a\u5e73\u6d0b\u304b\u3089\u5206\u96e2\u3057\u305f\u304b\uff1f<\/h3>\n<p>\u79c1\u305f\u3061\u306f2013\u5e74\u306b\u3001\u7d71\u5408\u56fd\u969b\u6df1\u6d77\u6398\u524a\u8a08\u753b\uff08Integrated Ocean Drilling Program\uff08IODP\uff09346\u6b21\u822a\u6d77\uff09\u306b\u304a\u3044\u3066\u3001\u65e5\u672c\u6d77\u4e2d\u592e\u90e8\u306e\u5927\u548c\u5806\u3067\u6398\u524a\u3055\u308c\u305f\u5806\u7a4d\u7269\u8a66\u6599\uff08\u904e\u53bb1000\u4e07\u5e74\u9593\u3067\u5806\u7a4d\u3057\u305f\u5168\u9577\u7d04400m\uff09\u3092\u5bfe\u8c61\u3068\u3057\u3066\u3001\u9b5a\u6b6f\u30fb\u9aa8\u7247\u5316\u77f3\u306e\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u3092\u5206\u6790\u3057\u307e\u3057\u305f\u3002\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u304b\u3089\u3001\u8a66\u6599\u3092\u63a1\u53d6\u3057\u305f\u65e5\u672c\u6d77\u4e2d\u592e\u90e8\u306e\u6df1\u5c64\u6c34\u304c\u3044\u3064\u9803\u304b\u3089\u5317\u592a\u5e73\u6d0b\uff08\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u9ad8\u3044\uff09\u3084\u5357\u592a\u6d0b\uff08\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u3084\u3084\u4f4e\u3044\uff09\u306b\u7531\u6765\u3059\u308b\u5916\u6d0b\u306e\u6d77\u6c34\u306e\u5f71\u97ff\u3092\u53d7\u3051\u306a\u304f\u306a\u3063\u305f\u306e\u304b\u3092\u8abf\u3079\u3088\u3046\u3068\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>\u65e5\u672c\u6d77\u306e\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u306f\u30011000\uff5e850\u4e07\u5e74\u524d\u306f\u5317\u592a\u5e73\u6d0b\u306b\u7531\u6765\u3059\u308b\u6d77\u6c34\uff08\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u9ad8\u3044\uff09\u306e\u5f71\u97ff\u3092\u53d7\u3051\u3066\u3044\u3066\u3001450\u4e07\u5e74\u524d\u307e\u3067\u306f\u5357\u592a\u6d0b\u306b\u7531\u6765\u3059\u308b\u6d77\u6c34\uff08\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u3084\u3084\u4f4e\u3044\uff09\u306e\u5f71\u97ff\u3092\u53d7\u3051\u3066\u3044\u305f\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3057\u305f\u3002\u3055\u3089\u306b\u8208\u5473\u6df1\u3044\u3053\u3068\u306b\u3001450\u4e07\u5e74\u524d\u306b\u306f\u65e5\u672c\u6d77\u306e\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u304c\u7d0414\u4e07\u5e74\u9593\u3067\u5927\u304d\u304f\u4f4e\u4e0b\u3057\u3066\u3044\u305f\u3053\u3068\u3082\u660e\u3089\u304b\u306b\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u306f\u3001\u9ad8\u3044\u30cd\u30aa\u30b8\u30e0\u540c\u4f4d\u4f53\u6bd4\u3092\u3082\u3064\u592a\u5e73\u6d0b\u306e\u6d77\u6c34\u304c\u65e5\u672c\u6d77\u306b\u6d41\u5165\u3057\u306b\u304f\u304f\u306a\u3063\u305f\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_8717\" aria-describedby=\"caption-attachment-8717\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-8717\" src=\"https:\/\/academist-cf.com\/journal\/wp-content\/uploads\/2018\/10\/004-2.jpg\" alt=\"\" width=\"600\" height=\"434\" srcset=\"https:\/\/academist-cf.com\/journal\/wp-content\/uploads\/2018\/10\/004-2.jpg 600w, https:\/\/academist-cf.com\/journal\/wp-content\/uploads\/2018\/10\/004-2-300x217.jpg 300w, https:\/\/academist-cf.com\/journal\/wp-content\/uploads\/2018\/10\/004-2-207x150.jpg 207w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-8717\" 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id=\"attachment_8718\" aria-describedby=\"caption-attachment-8718\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-8718\" src=\"https:\/\/academist-cf.com\/journal\/wp-content\/uploads\/2018\/10\/005.jpg\" alt=\"\" width=\"600\" height=\"196\" srcset=\"https:\/\/academist-cf.com\/journal\/wp-content\/uploads\/2018\/10\/005.jpg 600w, https:\/\/academist-cf.com\/journal\/wp-content\/uploads\/2018\/10\/005-300x98.jpg 300w, https:\/\/academist-cf.com\/journal\/wp-content\/uploads\/2018\/10\/005-280x91.jpg 280w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-8718\" class=\"wp-caption-text\">1000\u4e07\u5e74\u524d\u304b\u3089450\u4e07\u5e74\u524d\u306b\u304b\u3051\u3066\u306e\u65e5\u672c\u6d77\u5468\u8fba\u306e\u6d77\u6c34\u5faa\u74b0\u306e\u5909\u5316\u3092\u8868\u3057\u305f\u6982\u5ff5\u56f3<br 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\/>\nKozaka, Y., Horikawa, K., Asahara, Y., Amakawa, H., &amp; Okazaki, Y. (2018) Late Miocene?mid-Pliocene tectonically induced formation of the semi-closed Japan Sea, inferred from seawater Nd isotopes. Geology, 46, 903-906.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u65e5\u672c\u6d77\u306e\u6210\u7acb \u73fe\u5728\u3001\u65e5\u672c\u6d77\u306f\u6df1\u3055130m\u4ee5\u4e0b\u306e\u6d77\u5ce1\u3092\u901a\u3057\u3066\u5916\u6d0b\u3068\u7e4b\u304c\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u65e5\u672c\u6d77\u306e\u6df1\u5c64\u6c34\u3068\u5916\u6d0b\uff08\u592a\u5e73\u6d0b\uff09\u306e\u6df1\u5c64\u6c34\u306e\u4ea4\u63db\u306f\u5b8c\u5168\u306b\u906e\u65ad\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u6d45\u3044\u6d77\u5ce1\u3067\u9589\u3058\u3089\u308c\u305f\u534a\u9589\u9396\u7684\u306a\u65e5\u672c\u6d77\u306b\u306f\u3001\u5916 [&hellip;]<\/p>\n","protected":false},"author":336,"featured_media":8716,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[3],"tags":[38,149,88],"class_list":["post-8720","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-outcome","tag-38","tag-149","tag-88","has_thumb"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/academist-cf.com\/journal\/index.php?rest_route=\/wp\/v2\/posts\/8720","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/academist-cf.com\/journal\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/academist-cf.com\/journal\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/academist-cf.com\/journal\/index.php?rest_route=\/wp\/v2\/users\/336"}],"replies":[{"embeddable":true,"href":"https:\/\/academist-cf.com\/journal\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8720"}],"version-history":[{"count":8,"href":"https:\/\/academist-cf.com\/journal\/index.php?rest_route=\/wp\/v2\/posts\/8720\/revisions"}],"predecessor-version":[{"id":8785,"href":"https:\/\/academist-cf.com\/journal\/index.php?rest_route=\/wp\/v2\/posts\/8720\/revisions\/8785"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/academist-cf.com\/journal\/index.php?rest_route=\/wp\/v2\/media\/8716"}],"wp:attachment":[{"href":"https:\/\/academist-cf.com\/journal\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8720"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/academist-cf.com\/journal\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8720"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/academist-cf.com\/journal\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8720"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}