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Detrital zircon U-Pb-He double dating: A method of quantifying long- and short-term exhumation rates in collisional orogens

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Science China Earth Sciences 2014年第11期57卷 2702-2711页

作者： Christina Yan WANG ian H.campbell Peter W.REINERS Charlotte M.ALLEN Key Laboratory of Mineralogy and Metallogeny Guangzhou Institute of Geochemistry Chinese Academy of Sciences Research School of Earth Sciences The Australian National UniversityCanberra ACT 0200 Australia Department of Geosciences University of ArizonaTucson AZ 85721 USA

A U-Pb-He double-dating method is applied to detrital zircons with core-rim structure from the Ganges River in order to de- termine average short and long-term exhumation rates for the Himalayas. Long-term rates are calculated from the U/Pb ages of metamorphic rims of the grains that formed during the Himalayan orogeny and their crystallization temperatures, which are calculated from the Ti-in-zircon thermometer. Short-term rates are calculated from （U-Th）/He ages of the grains with appro- priate closure temperatures. The results show that short-term rates for the Himalayas, which range from 0.70 ± 0.09 to 2.67 ± 0.40 km/Myr and average 1.75 ± 0.59 （1δ） km/Myr, are higher and more varied than the long-term rates, which range from 0.84 ±0.16 to 1.85 ± 0.35 km/Myr and average 1.26 ±0.25 （let） km/Myr. The differences between the long-term and short-term rates can be attributed to continuous exhumation of the host rocks in different mechanisms in continental collision orogen. The U/Pb ages of 44.0 ± 3.7 to 18.3 ±0.5 Ma for the zircon rims indicate a protracted episode of -：25 Myr for regional metamorphism of the host rocks at deeper crust, whereas the （U-Th）/He ages of 42.2 ± 1.8 to 1.3 ± 0.2 Ma for the zircon grains represent a protracted period of -40 Myr for exposure of the host rocks to shallower crustal level. In particular, the oldest （U-Th）/He ages of the zircon grains are close to the oldest U/Pb ages for the rims, indicating that some parcels of the rocks that contain zircons were rapidly exhumed from deep to shallow levels in the stage of collisional orogeny. On the other hand, some parcels of the rocks may have been carried upwards by thrust faults in the post-collisional stage. The parcels could be carried upwards by the thrust faults that steepen as they near the surface, or by transient movement faults so that areas of rapid exhu- mation became areas of slow exhumation and visa versa on a time scale of a few Myr in order to maintain the continuous ex- huma

关键词： zircon U-Pb-He double-dating method Himalayas exhumation rate collisional orogen

Forty hours with a traumatic carotid transection： A diagnostic caveat and review of the contemporary management of penetrating neck trauma

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Chinese Journal of Traumatology 2018年第2期21卷 118-121页

作者： Eugene Ng ian campbell Andrew Choong Allan Kruger Philip J. Walker Department of Vascular Surgery Royal Brisbane & Women's Hospital Herston QLD 4006 Brisbane Australia

Although penetrating neck trauma （PNT） is uncommon, it is associated with the significant morbidity and mortality. The management of PNT has changed significantly over the past 50 years. A radiological assessment now is a vital part of the management with a traditional surgical exploration. A 22 years old male was assaulted by a screwdriver and sustained multiple penetrating neck injuries. A contrast CT scan revealed a focal pseudoaneurysm in the left common carotid artery bulb. There was no active bleeding or any other vascular injuries and the patient remained haemodynamically stable. In view of these findings, he was initially managed conservatively without an open surgical exploration. However, the patient was noted to have an acute drop in his hemoglobin count overnight post injury and the catheter directed angiography showed active bleeding from the pseudoaneurysm. Surgical exploration 40 hours following the initial injury revealed a penetrating injury through both arterial walls of the left carotid bulb which was repaired with a great saphenous vein patch. A percutaneous drain was inserted in the carotid tri- angle and a course of intravenous antibiotics for five days was commenced. The patient recovered well with no complications and remained asymptomatic at five months followup.

关键词： Penetrating neck trauma Management penetrating neck trauma Investigation penetrating neck trauma Assessment penetrating neck trauma

金平铜厂钼铜矿床赋矿岩体锆石ELA-ICP-MS定年

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矿床地质 2002年第S1期21卷 421-422页

作者：梁华英 ian H. campbell 谢应雯张玉泉中国科学院广州地球化学研究所广东广州510640 Research School of Earth Sciences Australian National University

金平铜厂钼铜矿床是西南三江新生代成矿带南端一个小型矿床,赋矿杂岩体主要由含早期正长岩包体的斑状石英二长岩、斑状石英正长岩及少量斑状二长花岗岩组成。本文用ELA-ICP-MS定年法测定了赋矿岩体锆石年龄。岩体锆石年龄表明,赋矿岩体... 详细信息

金平铜厂钼铜矿床是西南三江新生代成矿带南端一个小型矿床,赋矿杂岩体主要由含早期正长岩包体的斑状石英二长岩、斑状石英正长岩及少量斑状二长花岗岩组成。本文用ELA-ICP-MS定年法测定了赋矿岩体锆石年龄。岩体锆石年龄表明,赋矿岩体主要是(34.6±0.2)Ma形成的,岩体锆石继承年龄为(36.0±0.19)Ma,MSWD:1.1,继承锆石年龄可能代表早期正长岩形成年龄。

关键词：锆石年龄火成岩地球化学

富钾碱性岩体形成演化对铜矿成矿制约——以马厂箐铜矿为例

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自然科学进展 2004年第1期14卷 116-120页

作者：梁华英谢应雯张玉泉 ian campbell 中国科学院广州地球化学研究所广州510640 Research school of Earth Sciences.Australian National University

马厂箐赋铜斑岩体主要由早期角闪正长岩及晚期花岗斑岩组成,早期角闪正长岩锆石U-Th-Pb年龄(35.6±0.3)Ma,晚期花岗斑岩锆石U-Th-Pb年龄(35.0±0.2)Ma,岩浆活动期限0.6 Ma;早期角闪正长岩氧逸度低,锆石Ce4+/Ce3+平均102,晚期花岗斑岩氧... 详细信息

马厂箐赋铜斑岩体主要由早期角闪正长岩及晚期花岗斑岩组成,早期角闪正长岩锆石U-Th-Pb年龄(35.6±0.3)Ma,晚期花岗斑岩锆石U-Th-Pb年龄(35.0±0.2)Ma,岩浆活动期限0.6 Ma;早期角闪正长岩氧逸度低,锆石Ce4+/Ce3+平均102,晚期花岗斑岩氧逸度高,锆石Ce4+/Ce3+平均264.马厂箐赋铜斑岩体由早到晚氧化性增强表明和铜矿化有关氧化性岩浆不是直接来自强氧化性地慢源区。而是在形成上升过程中和顶部富水及斜长石氧化性盖层反应,形成富水氧化性岩浆.富水氧化性岩浆结晶分异出的富铜成矿流体有利于斑岩型铜矿床形成.

关键词：富钾碱性岩体富碱斑岩铜矿床锆石定年马厂箐铜矿

在发展中地区维持河流健康生命的探讨——湄公河案例研究

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中国水利 2005年第21期 40-42页

作者： ian campbell 任松长湄公河委员会

湄公河从喜马拉雅山流经6个东南亚国家,注入南中国海。随着经济社会的发展,对流域的健康状况也会产生影响。湄公河管理委员会正在采取一系列行动以保护河流的健康生命,“湄公河河流健康生命策略”旨在为湄公河管理提供一个框架,在框架... 详细信息

湄公河从喜马拉雅山流经6个东南亚国家,注入南中国海。随着经济社会的发展,对流域的健康状况也会产生影响。湄公河管理委员会正在采取一系列行动以保护河流的健康生命,“湄公河河流健康生命策略”旨在为湄公河管理提供一个框架,在框架内促进政府间的合作,以维持河流健康生命。

关键词：湄公河河流健康生命生态

叠加制造在数字化考古学文物重建中的应用——颐和园铜狮子复制

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叠加制造在数字化考古学文物重建中的应用——颐和园铜狮子复制

The Great Plume Debate

作者：张方今 Robert.ian.campbell ian.James.GRAHAM 英国拉夫堡大学设计学院、机械及制造工程学院

一、概述随着三维数字技术的发展叠加制造的应用已涉及众多领域。早在2000年,叠加制造研究员们就意识到数字化重建在考古人类学中的价值(Zhang,G.,et al.2000),(D’Urso,P.S.,et al.2000)。然而,在文物修复领域相对缺乏的已发表成果仍...

一、概述随着三维数字技术的发展叠加制造的应用已涉及众多领域。早在2000年,叠加制造研究员们就意识到数字化重建在考古人类学中的价值(Zhang,G.,et al.2000),(D’Urso,P.S.,et al.2000)。然而,在文物修复领域相对缺乏的已发表成果仍显示出叠加制造在此领域的有限应用,特别是相比于其在工程及医疗中的使用。

关键词：

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Episodes 2006年第2期29卷 133-133页

作者： ian H. campbell Senior Fellow Research School of Earth Sciences The Australian National University Canberra ACT 0200 AUSTRALIA

It is forty years since J. Tuzo Wilson first suggested that the Hawaiian Islands were produced by the oceanic lithosphere moving over a stationary ＂hotspot＂ in the mantle, and thirty years since W. Jason Morgan suggested that Wilson＇s hotspots are thermal plumes in the Earth＇s mantle, and that they may play an important role in convection. Flood basalts, volcanic continental margins, large oceanic plateaus and age-progressive aseismic ridges, along with smaller-volume seamount and ocean-island chains, have all been attributed to mantle plumes.

关键词：羽流岩石海山地质作用

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肺结核:诊断和治疗

英国医学杂志中文版 2006年第4期9卷 227-231页

作者： ian A campbell Oumou Bah-Sow 张丽萍（译）代华平（校） Llandough Hospital Caniiff CF64 2XX Department of Pneumophtisiology Conakry University Teaching HospitalGuinea 不详

尽管关于结核病的预防和治疗有很完善的文件管理和很详细的文献报道，但是肺结核仍然是一个全球性问题。贫困和人免疫缺陷病毒（HIV）感染是结核病持续存在的主要原因。在此我们对肺结核病的诊断、治疗和预防进行综述。

关键词：肺结核患者利福平乙胺丁醇耐药利福霉素乙二胺结核菌素试验

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岩浆房内的成分对流与热对流

国外火山地质 1989年第1期 34-48页

作者： Daniel Martin Ross W.Griffths ian H.campbell 戴爱华吴志勤

岩浆房冷却与结晶的速率取决于岩浆房的热流。热主要通过岩浆房顶部散失,而结晶作用主要发生在岩浆房底部。这两种作用产生了不稳定的浮力流,这种浮力流从而又导致岩浆中产生了极不稳定的复杂对流。即使在冷却速率最低时,所求得的铁镁... 详细信息

岩浆房冷却与结晶的速率取决于岩浆房的热流。热主要通过岩浆房顶部散失,而结晶作用主要发生在岩浆房底部。这两种作用产生了不稳定的浮力流,这种浮力流从而又导致岩浆中产生了极不稳定的复杂对流。即使在冷却速率最低时,所求得的铁镁质岩浆和花岗质岩浆的热瑞利值Ra都非常大。既然成分浮力流与热浮力流呈正相关,那以就可以证明成分瑞利值Rs(因而总瑞利值)比Ra大得多。对于结晶出橄榄石的玄武质熔浆,Rs比Ra大成10～6倍。但是,成分浮力流与热浮力流则大致相等。所以,热梯度和成分密度梯度对岩浆房中对流速率的影响相等。本文还论及由于岩浆房底部释放出结晶潜热而产生的热浮力效应。业已证明,玄武质岩浆房底部的结晶潜热边界层厚达1m,其热梯度很低;而它的成分边界层厚约1cm,且热分梯度很高。结果是在晶液界面的前锋,过冷程度的变化主要取决于成分效应。生长晶体的习性与成分也受成分边界层的性质制约。可以预料,当成分边界层的厚度小于晶体大小时,晶体就呈长条状(这正如含水溶液的实验一样)。相反,当成分边界层的厚度大于晶体大小时,晶体就呈等粒状(正如大多数岩浆房内出现的情况)。后一种情况下,边界层的的不稳定性将使晶体内出现环带构造。用相容微量元素穿过边界层的扩散作用,还可以解释层状侵入体中所观察到的橄栏石中的Ni含最与结晶的矿物组合中含Ni相的比例之间的反相关性。

关键词：热边界层温度边界层岩浆房边界层厚度热对流