| 再论冀北古缝合带的证据 |
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| 引用本文： | 王仁民,倪志耀,袁建平,童 英.再论冀北古缝合带的证据[J].岩石矿物学杂志,2002,21(4):327-335. |
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| 作者姓名： | 王仁民 倪志耀 袁建平 童 英 |
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| 作者单位： | 北京大学,地球与空间科学学院,北京,100871 |
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| 基金项目： | 国家自然科学基金资助项目(4 986 2 0 0 3，4 9872 0 6 5 ) |
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| 摘 要： | 近南北走向的冀北太古宙麻粒岩相古陆核北侧受到近东西走向的古元古代造山带的交切。在陆缘沉积增生带内发现大量残存的古洋壳残片，包括蛇纹石化方辉橄榄岩、且鬣刺结构的苦橄岩、透闪石岩、橄长岩、异剥钙榴岩、细碧岩、退变榴辉岩、基性枕状熔岩和斜长花岗岩等，与陆缘沉积岩一起构成古蛇绿岩混杂带。推断该蛇绿岩混杂带从古元古代开始直到新元古代末有逐步向北后退发育的特点。
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| 关 键 词： | 元古宙 古缝合带 古洋壳 河北 造山带 |
| 文章编号： | 1000-6524(2002)04-0327-09 |
| 修稿时间： | 2002年6月12日 |
More on the evidence of the paleostylolitic zone in northern Hebei Province |
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| WANG Ren_min,NI Zhi_yao,YUAN Jian_ping and TONG Ying.More on the evidence of the paleostylolitic zone in northern Hebei Province[J].Acta Petrologica Et Mineralogica,2002,21(4):327-335. |
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| Authors: | WANG Ren_min NI Zhi_yao YUAN Jian_ping and TONG Ying |
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| Abstract: | The northern margin the NS-extending ancient continental block of Archean gran-
ulite facies in northern Hebei Province is intersected by the WE-stretching Early Proterozoic orogenic belt. Lots of residual oceanic crusts such as serpentinized harzburgites, spinifex picrite, tremolitite, troctolite, rodingite, spilite, retrograded eclogite, pillow basic lava and plagiogranite are found in the continental marginal sedimentary-accreting zone. These crusts and continental marginal sedimentary rocks make up a typical ophiolitic mélange belt. It can be con-
cluded that this ophiolitic mélange belt was formed progressively from south to north between Early Proterozoic and the end of Proterozoic. |
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| Keywords: | Proterozoic paleostylolitic zone ancient oceanic crusts northern Hebei Province |
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