The 1780-1760 Ma Taihang dyke swarm and the coeval Xiong’er volcanic province are the most widespread magmatic events occurring post the amalgamation of the two North China cratons.It has been debated whether
Fabrics of an Archean mélange belt in the Zanhuang Complex of the North China Craton(NCC)were intruded by mafic dikes and a granite pluton(Deng et al.,2013;Wang et al.,2013).Igneous zircons from an undefomed
Influenced by Late Cretaceous tectonic uplift,fluid inclusion techniques were employed to determine the hydrocarbon accumulation stages of the Chang 7_(3) sub-member in the Zhijing-Ansai area.There were two fluorescen...Influenced by Late Cretaceous tectonic uplift,fluid inclusion techniques were employed to determine the hydrocarbon accumulation stages of the Chang 7_(3) sub-member in the Zhijing-Ansai area.There were two fluorescent oil inclusions in the Chang 7_(3) sub-member.The green fluorescent oil inclusions indicated the relatively low-maturity oil,the homogenization temperatures of coeval aqueous inclusions were 83.8-89.5℃.The blue fluorescent oil inclusions indicated the relatively high-maturity oil,the homogenization temperatures of coeval aqueous inclusions exhibited two peaks which were 90.6-109.4℃and 110.1-137.4℃.Combining the burial-thermal history of four wells,there were three stages of hydrocarbon accumulation.A smallscale charging of the relatively low-maturity oil occurred around 131-122 Ma.During the large-scale charging of the high-maturity oil,the hydrocarbon generation of source rock peaked(c.114 to 100 Ma).Late tectonic uplift resulted in an oil adjustment stage(88-72 Ma),corresponding to the high-maturity oil charging time.展开更多
人类学小型社会的人工制品具有特殊的文化表征意义,例如并置在华丽仪式场所的舞者面具、祖先雕像、头饰和华丽权杖,因此这些物成为人类学者研究的关键文化文本。那么,人类学者应如何书写非西方小型社会物的民族志?这是一个关于非西方物...人类学小型社会的人工制品具有特殊的文化表征意义,例如并置在华丽仪式场所的舞者面具、祖先雕像、头饰和华丽权杖,因此这些物成为人类学者研究的关键文化文本。那么,人类学者应如何书写非西方小型社会物的民族志?这是一个关于非西方物的叙事观与方法论问题。人类学对物的研究被称为“物的民族志”,也称“物志”(ethnography of object)。传统物的民族志追求对客观真理的书写,而后现代时期则追求“写文化”。在人类学中,非西方物的民族志书写往往追踪物所承载的历史、意义和象征。物的民族志不仅是物的客观真理的书写,更是关于地方性知识的深描(thick description)。人类学者将物作为文化文本,探讨物与社会结构、宗教信仰和美学观念的层层关联,并关注物的社会生命史及物在跨文化语境中的意义,通过深描探讨物质文化背后所表征的象征意义。共时观(coevalness)是一种后结构主义的人类学时间观,主张文明不因时间阶段而呈高低之分,原始与文明的概念处于“共时”平等的意义。共时性叙事观体现了人类学对进化论的反思,不仅从动态视角研究非西方艺术,还关注人工制品的社会生命史,表达了对他者文化的理解与尊重。因此,本研究基于后现代结构人类学取向,形成一种互相构建的共时与深描方法论,作为适配非西方社会物的民族志书写方法,并将这种物的民族志方法总结为“共时深描”方法论。一方面通过“深描”通往文化文本的纵向多层研究,另一方面,通过“共时”观通往文化文本的横向结构研究,通过物的纵横结构关系形成立体的民族志。这种纵向与横向呈立体多维的文本写作范式,为写文化提供了一种新的文本写作实验方法。“共时深描”作为一种物的实验民族志方法论,为研究非西方物的民族志提供了合适的方法论。这种方法基于人类学时间观,为民族志书写提供了一种实验书写的可能性。“共时深描”方法论作为一种小型社会物的民族志,“共时深描”不仅为小型社会物的民族志提供了一种文化研究方法,也体现了当代人类学思想史中物叙事的思潮。展开更多
Proto-Adamastor ocean bathed Rodinia and successor continental fragments from 1.0-0.9 Ga up to0.75 Ga,and evolved into world Adamastor Ocean at 0.75-0.60 Ga.Mesoproterozoic oceanic crust is poorly preserved on contine...Proto-Adamastor ocean bathed Rodinia and successor continental fragments from 1.0-0.9 Ga up to0.75 Ga,and evolved into world Adamastor Ocean at 0.75-0.60 Ga.Mesoproterozoic oceanic crust is poorly preserved on continents,only indirect evidence registered in Brasiliano Orogen.We report first evidence of ophiolite originated in proto-Adamastor.We use multi-technique U-Pb-Hf zircon andδ^11B tourmaline isotopic and elemental compositions.The host tourmalinite is enclosed in metaserpentinite,both belonging to the Bossoroca ophiolite.Zircon is 920 Ma-old,εHf(920 Ma)=+12,HfTDM=1.0 Ga and has’oceanic’composition(e.g.,U/Yb<0.1).Tourmaline is dravite withδ^11B=+1.8‰(Tur 1),0‰(Tur 2),-8.5‰(Tur 3).These characteristics are a novel contribution to Rodinia and associated world ocean,because a fragment of proto-Adamastor oceanic crust and mantle evolved at the beginning of the Brasiliano Orogen.展开更多
The twelve Gondwanan stratigraphic horizons of India have yielded varied vertebrate fossils.The oldest fossil record is the Endothiodon-dominated multitaxic Kundaram fauna,which correlates the Kundaram Formation with ...The twelve Gondwanan stratigraphic horizons of India have yielded varied vertebrate fossils.The oldest fossil record is the Endothiodon-dominated multitaxic Kundaram fauna,which correlates the Kundaram Formation with several other coeval Late Permian horizons of South Africa,Zambia,Tanzania,Mozambique,Malawi,Madagascar and Brazil.The Permian-Triassic transition in India is marked by distinct taxonomic shift and faunal characteristics and represented by small-sized holdover fauna of the Early Triassic Panchet and Kamthi fauna.展开更多
文摘The 1780-1760 Ma Taihang dyke swarm and the coeval Xiong’er volcanic province are the most widespread magmatic events occurring post the amalgamation of the two North China cratons.It has been debated whether
文摘Fabrics of an Archean mélange belt in the Zanhuang Complex of the North China Craton(NCC)were intruded by mafic dikes and a granite pluton(Deng et al.,2013;Wang et al.,2013).Igneous zircons from an undefomed
文摘Influenced by Late Cretaceous tectonic uplift,fluid inclusion techniques were employed to determine the hydrocarbon accumulation stages of the Chang 7_(3) sub-member in the Zhijing-Ansai area.There were two fluorescent oil inclusions in the Chang 7_(3) sub-member.The green fluorescent oil inclusions indicated the relatively low-maturity oil,the homogenization temperatures of coeval aqueous inclusions were 83.8-89.5℃.The blue fluorescent oil inclusions indicated the relatively high-maturity oil,the homogenization temperatures of coeval aqueous inclusions exhibited two peaks which were 90.6-109.4℃and 110.1-137.4℃.Combining the burial-thermal history of four wells,there were three stages of hydrocarbon accumulation.A smallscale charging of the relatively low-maturity oil occurred around 131-122 Ma.During the large-scale charging of the high-maturity oil,the hydrocarbon generation of source rock peaked(c.114 to 100 Ma).Late tectonic uplift resulted in an oil adjustment stage(88-72 Ma),corresponding to the high-maturity oil charging time.
文摘人类学小型社会的人工制品具有特殊的文化表征意义,例如并置在华丽仪式场所的舞者面具、祖先雕像、头饰和华丽权杖,因此这些物成为人类学者研究的关键文化文本。那么,人类学者应如何书写非西方小型社会物的民族志?这是一个关于非西方物的叙事观与方法论问题。人类学对物的研究被称为“物的民族志”,也称“物志”(ethnography of object)。传统物的民族志追求对客观真理的书写,而后现代时期则追求“写文化”。在人类学中,非西方物的民族志书写往往追踪物所承载的历史、意义和象征。物的民族志不仅是物的客观真理的书写,更是关于地方性知识的深描(thick description)。人类学者将物作为文化文本,探讨物与社会结构、宗教信仰和美学观念的层层关联,并关注物的社会生命史及物在跨文化语境中的意义,通过深描探讨物质文化背后所表征的象征意义。共时观(coevalness)是一种后结构主义的人类学时间观,主张文明不因时间阶段而呈高低之分,原始与文明的概念处于“共时”平等的意义。共时性叙事观体现了人类学对进化论的反思,不仅从动态视角研究非西方艺术,还关注人工制品的社会生命史,表达了对他者文化的理解与尊重。因此,本研究基于后现代结构人类学取向,形成一种互相构建的共时与深描方法论,作为适配非西方社会物的民族志书写方法,并将这种物的民族志方法总结为“共时深描”方法论。一方面通过“深描”通往文化文本的纵向多层研究,另一方面,通过“共时”观通往文化文本的横向结构研究,通过物的纵横结构关系形成立体的民族志。这种纵向与横向呈立体多维的文本写作范式,为写文化提供了一种新的文本写作实验方法。“共时深描”作为一种物的实验民族志方法论,为研究非西方物的民族志提供了合适的方法论。这种方法基于人类学时间观,为民族志书写提供了一种实验书写的可能性。“共时深描”方法论作为一种小型社会物的民族志,“共时深描”不仅为小型社会物的民族志提供了一种文化研究方法,也体现了当代人类学思想史中物叙事的思潮。
基金field support from José Alirio Lenzi at Mina da Bossoroca Conselho Nacional do Desenvolvimento Científico e Tecnológico (Government of Brazil) supported systematically investigations by the authors, including undergraduate scholarship to Mariana Werle
文摘Proto-Adamastor ocean bathed Rodinia and successor continental fragments from 1.0-0.9 Ga up to0.75 Ga,and evolved into world Adamastor Ocean at 0.75-0.60 Ga.Mesoproterozoic oceanic crust is poorly preserved on continents,only indirect evidence registered in Brasiliano Orogen.We report first evidence of ophiolite originated in proto-Adamastor.We use multi-technique U-Pb-Hf zircon andδ^11B tourmaline isotopic and elemental compositions.The host tourmalinite is enclosed in metaserpentinite,both belonging to the Bossoroca ophiolite.Zircon is 920 Ma-old,εHf(920 Ma)=+12,HfTDM=1.0 Ga and has’oceanic’composition(e.g.,U/Yb<0.1).Tourmaline is dravite withδ^11B=+1.8‰(Tur 1),0‰(Tur 2),-8.5‰(Tur 3).These characteristics are a novel contribution to Rodinia and associated world ocean,because a fragment of proto-Adamastor oceanic crust and mantle evolved at the beginning of the Brasiliano Orogen.
文摘The twelve Gondwanan stratigraphic horizons of India have yielded varied vertebrate fossils.The oldest fossil record is the Endothiodon-dominated multitaxic Kundaram fauna,which correlates the Kundaram Formation with several other coeval Late Permian horizons of South Africa,Zambia,Tanzania,Mozambique,Malawi,Madagascar and Brazil.The Permian-Triassic transition in India is marked by distinct taxonomic shift and faunal characteristics and represented by small-sized holdover fauna of the Early Triassic Panchet and Kamthi fauna.
