\u4e2d\u671f\u767d\u4e9c\u7d00\u306f\u6e29\u6696\u5316\u304c\u9032\u884c\u3057\u305f\u6642\u4ee3\u3067\u3001Cenomanian\u304b\u3089Turonian\u306b\u304b\u3051\u3066\u6d77\u6d0b\u7121\u9178\u7d20\u4e8b\u5909(OAE2)\u304c\u767a\u751f\u3057(Huber et al.,2002; Wilson et al.,2002)\u3001\u305d\u306e\u5f8c\u5f90\u3005\u306b\u6c17\u5019\u304c\u5bd2\u51b7\u5316\u3078\u3068\u5411\u304b\u3063\u305f\u3002\u6d77\u6d0b\u306e\u6df1\u5c64\u5faa\u74b0\u306f\u5730\u7403\u306e\u6c17\u5019\u3068\u95a2\u9023\u6027\u304c\u3042\u308b\u3082\u306e\u306e\u3001\u4e2d\u671f\u304b\u3089\u5f8c\u671f\u306b\u304b\u3051\u3066\u306e\u767d\u4e9c\u7d00\u3092\u901a\u3058\u305f\u6df1\u5c64\u5faa\u74b0\u306f\u5fa9\u5143\u3055\u308c\u3066\u304a\u3089\u305a\u3001\u6c17\u5019\u3068\u306e\u95a2\u9023\u3082\u660e\u3089\u304b\u306b\u3055\u308c\u3066\u3044\u306a\u304b\u3063\u305f\u3002<\/p>\n
\u8868\u751f\u306e\u5e95\u751f\u6709\u5b54\u866b\u306e\u6bbb\u306b\u8a18\u9332\u3055\u308c\u308b\u6df1\u5c64\u6c34\u306e\u70ad\u7d20\u540c\u4f4d\u4f53\u6bd4\u306f\u3001\u6df1\u5c64\u5faa\u74b0\u306b\u3088\u308b\u5f71\u97ff\u3092\u53d7\u3051\u308b\u3002\u6d77\u6d0b\u8868\u5c64\u306b\u306612C\u306b\u5bcc\u3080\u6709\u6a5f\u7269\u304c\u5408\u6210\u3055\u308c\u3001\u305d\u306e\u6709\u6a5f\u7269\u304c\u6df1\u5c64\u3078\u3068\u6c88\u964d\u3059\u308b\u9593\u306b\u5206\u89e3\u3055\u308c\u3066\u3001\u6df1\u5c64\u6c3412C\u308413C\u304c\u4f9b\u7d66\u3055\u308c\u308b\u3002\u3055\u3089\u306b\u6df1\u5c64\u6c34\u306e\u6d41\u308c\u306b\u3088\u3063\u306612C\u308413C\u304c\u904b\u3070\u308c\u3001\u305d\u306e\u7d50\u679c\u3068\u3057\u3066\u6df1\u5c64\u6c34\u306e\u8d77\u6e90\u306b\u8fd1\u3044\u6df1\u5c64\u307b\u306912C\u304c\u4e4f\u3057\u304fδ13C\u306e\u5024\u304c\u9ad8\u304f\u306a\u308b(Nunes and Norris, 2006)\u3002\u3053\u306e\u4ed5\u7d44\u307f\u3092\u5229\u7528\u3057\u3066\u672c\u7814\u7a76\u3067\u306f\u3001\u5317\u5927\u897f\u6d0b\u3084\u30a4\u30f3\u30c9\u6d0b\u3001\u592a\u5e73\u6d0b\u3067\u63a1\u53d6\u3055\u308c\u305fDSDP\u3001ODP\u306e\u30b3\u30a2\u8a66\u6599\u304b\u3089\u62fe\u3044\u3060\u3055\u308c\u305f\u5e95\u751f\u6709\u5b54\u866b\u6bbb\u306e\u70ad\u7d20\u540c\u4f4d\u4f53\u6bd4\u3092\u7528\u3044\u3066\u3001\u767d\u4e9c\u7d00\u306eAlbian\u304b\u3089Maastrichtian\u306e\u671f\u9593\u306e\u6df1\u5c64\u5faa\u74b0\u3092\u5fa9\u5143\u3057\u305f\u3002\u307e\u305f\u3001\u53e4\u7b2c\u4e09\u7d00\u306b\u8d77\u304d\u305f\u6975\u5927\u6e29\u6696\u5316\u4e8b\u5909\u3067\u3042\u308bPETM\u306e\u6642\u671f\u306e\u6df1\u5c64\u6c34\u6e29\u3092\u57fa\u6e96\u306b\u3057\u3001\u9178\u7d20\u540c\u4f4d\u4f53\u6bd4\u304b\u3089\u63a8\u5b9a\u3057\u305f\u6c34\u6e29\u304b\u3089\u6df1\u5c64\u6c34\u306e\u8d77\u6e90\u3092\u8003\u5bdf\u3057\u305f\u3002<\/p>\n
Albian\u304b\u3089Cenomanian\u306b\u304b\u3051\u3066\u306f\u3001\u6bd4\u8f03\u7684\u9ad8\u7def\u5ea6\u306b\u304a\u3044\u3066\u6df1\u5c64\u6c34\u304c\u5f62\u6210\u3055\u308c\u30a4\u30f3\u30c9\u6d0b\u306e\u6df1\u5c64\u6c34\u304c\u5317\u5927\u897f\u6d0b\u306e\u305d\u308c\u3088\u308a\u3082\u65b0\u3057\u304b\u3063\u305f\u3002\u6e29\u6696\u5316\u304c\u767a\u9054\u3057\u305fCenomanian\u3068OAE2\u306e\u6642\u671f\u306b\u306f\u3001\u5317\u5927\u897f\u6d0b\u3068\u30a4\u30f3\u30c9\u6d0b\u306e\u70ad\u7d20\u540c\u4f4d\u4f53\u6bd4\u304c\u592a\u5e73\u6d0b\u3068\u6bd4\u3079\u3066\u9ad8\u3044\u3053\u3068\u3001\u9178\u7d20\u540c\u4f4d\u4f53\u6bd4\u306e\u5024\u304c\u4f4e\u304f\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u304b\u3089\u3001\u4f4e\u7def\u5ea6\u306e\u30c6\u30c1\u30b9\u6d77\u3067\u3064\u304f\u3089\u308c\u305f\u6c34\u584a\u304c\u6df1\u5c64\u6c34\u3068\u306a\u308a\u3001\u5317\u5927\u897f\u6d0b\u3084\u30a4\u30f3\u30c9\u6d0b\u3001\u592a\u5e73\u6d0b\u3078\u3068\u6d41\u308c\u3066\u3044\u3063\u305f\u3068\u8003\u3048\u3089\u308c\u308b\u3002\u304a\u3088\u305d88Ma\u306eConiacian\u306b\u304a\u3044\u3066\u3082\u6df1\u5c64\u6c34\u306e\u8d77\u6e90\u306f\u4f4e\u7def\u5ea6\u3067\u3001\u592a\u5e73\u6d0b\u306e\u6df1\u5c64\u6c34\u304c\u4ed6\u306e\u6d77\u6d0b\u3068\u6bd4\u8f03\u3057\u3066\u65b0\u3057\u304f\u306a\u3063\u305f\u3002Campanian\u4ee5\u964d\u306b\u306f\u5317\u5927\u897f\u6d0b\u9ad8\u7def\u5ea6\u3067\u3064\u304f\u3089\u308c\u305f\u6df1\u5c64\u6c34\u304c\u30a4\u30f3\u30c9\u6d0b\u3092\u7d4c\u7531\u3057\u592a\u5e73\u6d0b\u3078\u3068\u6d41\u308c\u3066\u3044\u304f\u73fe\u5728\u3068\u4f3c\u305f\u3088\u3046\u306a\u6df1\u5c64\u5faa\u74b0\u304c\u6210\u7acb\u3057\u305f\u3002<\/p>\n
\u4ee5\u4e0a\u3088\u308a\u767d\u4e9c\u7d00\u306b\u304a\u3044\u3066\u3001\u6e29\u6696\u671f\u304b\u3089\u5bd2\u51b7\u671f\u306b\u304b\u3051\u3066\u6df1\u5c64\u6c34\u306e\u8d77\u6e90\u304c\u4f4e\u7def\u5ea6\u304b\u3089\u9ad8\u7def\u5ea6\u3078\u3068\u5909\u5316\u3057\u305f\u3053\u3068\u304c\u660e\u3089\u304b\u3068\u306a\u3063\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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