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2021, 40(4) 793-806 DOI:
ISSN: 1004-5589 CN: 22-1111/P |
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Petrogenesis of Early Mesoproterozoic syenogranitic porphyry in Miyun area,North China |
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ＸＩＺｅｃｈｅｎ１，ＬＩＳｈａｎｓｈａｎ１，ＨＥＤｅｎｇｙａｎｇ１，ＹＡＮＧＺｅｙｕ１，ＱＩＵＫｕｎｆｅｎｇ１，２ |
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１ＳｃｈｏｏｌｏｆＥａｒｔｈＳｃｉｅｎｃｅａｎｄＲｅｓｏｕｒｃｅｓ，ＣｈｉｎａＵｎｉｖｅｒｓｉｔｙｏｆＧｅｏｓｃｉｅｎｃｅｓ，Ｂｅｉｊｉｎｇ１０００８３，Ｃｈｉｎａ；
２ＳｔａｔｅＫｅｙＬａｂｏｒａｔｏｒｙｏｆＧｅｏｌｏｇｉｃａｌＰｒｏｃｅｓｓｅｓａｎｄＭｉｎｅｒａｌＲｅｓｏｕｒｃｅｓ，ＣｈｉｎａＵｎｉｖｅｒｓｉｔｙｏｆＧｅｏｓｃｉｅｎｃｅｓ，Ｂｅｉｊｉｎｇ１０００８３，Ｃｈｉｎａ |
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Abstract：
ＴｈｅｆｏｒｍａｔｉｏｎｏｆｔｈｅＭｉｙｕｎｒａｐａｋｉｖｉｇｒａｎｉｔｅｍａｒｋｓｔｈｅｂｅｇｉｎｎｉｎｇｏｆｔｈｅＥａｒｌｙＭｅｓｏｐｒｏｔｅｒｏｚｏｉｃｅｘｔｅｎｓｉｏｎｐｒｏｃｅｓｓｉｎＭｉｙｕｎａｒｅａ．Ｔｏｒｅｖｅａｌｉｔｓｅｘｔｅｎｓｉｏｎｐｒｏｃｅｓｓ，ａｓｙｅｎｏｇｒａｎｉｔｉｃｐｏｒｐｈｙｒｙｉｎＭｉｙｕｎｗａｓｓｅｌｅｃｔｅｄａｎｄ ＬＡＩＣＰＭＳｍｅｔｈｏｄｗａｓｃｏｎｄｕｃｔｅｄｆｏｒｚｉｒｃｏｎＵＰｂｄａｔｉｎｇａｎｄｔｒａｃｅｅｌｅｍｅｎｔｓｉｎｖｅｓｔｉｇａｔｉｏｎ．ＺｉｒｃｏｎＵＰｂｄａｔｉｎｇ ｒｅｓｕｌｔｓｓｈｏｗｔｈａｔｔｈｅｃｒｙｓｔａｌｌｉｚａｔｉｏｎａｇｅｏｆｓｙｅｎｏｇｒａｎｉｔｉｃｐｏｒｐｈｙｒｙｉｓ（１６６６±１７）Ｍａ，ｗｈｉｃｈｗａｓｐｒｏｄｕｃｅｄｂｙｔｈｅ ＥａｒｌｙＭｅｓｏｐｒｏｔｅｒｏｚｏｉｃｍａｇｍａｔｉｓｍ．ＺｉｒｃｏｎｔｒａｃｅｅｌｅｍｅｎｔｓａｒｅｃｈａｒａｃｔｅｒｉｚｅｄｂｙＬＲＥＥｄｅｐｌｅｔｉｏｎ，ＨＲＥＥｅｎｒｉｃｈｍｅｎｔ，ｏｂｖｉｏｕｓｐｏｓｉｔｉｖｅＣｅａｎｏｍａｌｙａｎｄｎｅｇａｔｉｖｅＥｕａｎｏｍａｌｙ，ｗｈｉｃｈｉｓｃｏｎｓｉｓｔｅｎｔｗｉｔｈｍａｇｍａｔｉｃｚｉｒｃｏｎｃｈａｒａｃｔｅｒｉｓｔｉｃｓ．Ｉｔ ｓｕｇｇｅｓｔｓｔｈａｔｐｌａｇｉｏｃｌａｓｅｆｒａｃｔｉｏｎａｔｉｏｎａｎｄｃｒｙｓｔａｌｌｉｚａｔｉｏｎｄｕｒｉｎｇｉｔｓｆｏｒｍａｔｉｏｎ．Ｃｏｍｂｉｎｅｄｗｉｔｈｐｒｅｖｉｏｕｓｓｔｕｄｉｅｓ，ｔｈｅ ａｕｔｈｏｒｓｓｕｇｇｅｓｔｔｈａｔｔｈｅｓｙｅｎｏｇｒａｎｉｔｉｃｐｏｒｐｈｙｒｙｗａｓｆｏｒｍｅｄｉｎａｎｅｘｔｅｎｓｉｏｎａｌｓｅｔｔｉｎｇ．ＴｈｅＥａｒｌｙＭｅｓｏｐｒｏｔｅｒｏｚｏｉｃｅｘｔｅｎｓｉｏｎｐｒｏｃｅｓｓｉｎｔｈｅＮｏｒｔｈＣｈｉｎａＣｒａｔｏｎｏｆＭｉｙｕｎａｒｅａｌａｓｔｅｄｆｏｒａｔｌｅａｓｔ１６６６Ｍａ |
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Keywords：
ｚｉｒｃｏｎ
ＵＰｂａｇｅ
ｔｒａｃｅｅｌｅｍｅｎｔｇｅｏｃｈｅｍｉｓｔｒｙ
Ｍｅｓｏｐｒｏｔｅｒｏｚｏｉｃ
ａｃｉｄｉｎｔｒｕｓｉｖｅｒｏｃｋｓ
Ｎｏｒｔｈ ＣｈｉｎａＣｒａｔｏ
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