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| DOI | 10.1130/G36472.1 |
| Forearc hyperextension dismembered the south Tibetan ophiolites | |
| Maffione, Marco; van Hinsbergen, Douwe J. J.; Koornneef, Louise M. T.; Guilmette, Carl; Hodges, Kip; Borneman, Nathaniel; Huang, Wentao; Ding, Lin; Kapp, Paul | |
| 通讯作者 | Maffione, M (通讯作者) |
| 发表日期 | 2015 |
| ISSN | 0091-7613 |
| EISSN | 1943-2682 |
| 起始页码 | 475 |
| 结束页码 | 478 |
| 卷号 | 43期号:6 |
| 英文摘要 | Suprasubduction zone ophiolites are relics of oceanic upper plate forearcs and are typically preserved as discontinuous belts with discrete massifs along suture zones. Ophiolites usually contain an incomplete condensed section compared to average modern oceanic lithosphere. The incompleteness and discontinuity of ophiolites are frequently attributed to dismemberment, but tectonic causes remain poorly constrained. Here we show new paleomagnetic and field geological evidence for the preservation of extensional detachment faults that thinned and dismembered the south Tibetan ophiolite belt during the Early Cretaceous. Similar to those documented in modern slow-and ultraslow-spreading ridges, these detachments exhumed lithospheric mantle, and subophiolitic melange, to the seafloor, which became unconformably covered by Asia-derived forearc strata. We call this mechanism forearc hyperextension, whereby widespread detachment faults accommodate upper plate extension above a subduction zone. We propose that hyperextension is the key mechanism responsible for dismemberment of the south Tibetan ophiolitic belt shortly after its magmatic accretion. |
| 关键词 | ZANGBO SUTURE ZONEMID-ATLANTIC RIDGEXIGAZE OPHIOLITECORE COMPLEXORIGINGEOCHEMISTRYCONSTRAINTSBASINEMPLACEMENTPERIDOTITES |
| 语种 | 英语 |
| WOS研究方向 | Geology |
| WOS类目 | Geology |
| WOS记录号 | WOS:000358572600007 |
| 来源期刊 | GEOLOGY
 |
| 来源机构 | 中国科学院青藏高原研究所 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/258592 |
| 推荐引用方式 GB/T 7714 | Maffione, Marco,van Hinsbergen, Douwe J. J.,Koornneef, Louise M. T.,et al. Forearc hyperextension dismembered the south Tibetan ophiolites[J]. 中国科学院青藏高原研究所,2015,43(6). |
| APA | Maffione, Marco.,van Hinsbergen, Douwe J. J..,Koornneef, Louise M. T..,Guilmette, Carl.,Hodges, Kip.,...&Kapp, Paul.(2015).Forearc hyperextension dismembered the south Tibetan ophiolites.GEOLOGY,43(6). |
| MLA | Maffione, Marco,et al."Forearc hyperextension dismembered the south Tibetan ophiolites".GEOLOGY 43.6(2015). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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