Journal of The Virtual Explorer最新文献_第8页

Recent advances in the study of the stratigraphy and the magmatism of the Iberian Pyrite Belt, Portugal 葡萄牙伊比利亚黄铁矿带地层学与岩浆作用研究进展

Journal of The Virtual Explorer Pub Date : 1900-01-01 DOI: 10.3809/JVIRTEX.2005.00123

J. T. Oliveira, Z. Pereira, C. Rosa, D. Rosa, J. Matos

引用次数: 20

Broken Hill Model - bringing portability to 3D geoscience 破碎山模型-为3D地球科学带来可移植性

Journal of The Virtual Explorer Pub Date : 1900-01-01 DOI: 10.3809/JVIRTEX.2001.00034

S. Nichols

引用次数: 1

Grain boundary sliding in experimental deformation of Octachloropropane 八氯丙烷实验变形中的晶界滑动

Journal of The Virtual Explorer Pub Date : 1900-01-01 DOI: 10.3809/JVIRTEX.2000.00018

Jin-Han Lee

引用次数: 4

Crisis and Recovery: The Acraman Impact Event and its Biostratigraphic Significance 危机与恢复:阿克拉曼撞击事件及其生物地层学意义

Journal of The Virtual Explorer Pub Date : 1900-01-01 DOI: 10.3809/JVIRTEX.2005.00143

G. Webb

引用次数: 0

Experimental designs to model along-strike fault interaction 模拟沿走向断层相互作用的实验设计

Journal of The Virtual Explorer Pub Date : 1900-01-01 DOI: 10.3809/JVIRTEX.2002.00043

J. L. Calvez, B. Vendeville

{"title":"Experimental designs to model along-strike fault interaction","authors":"J. L. Calvez, B. Vendeville","doi":"10.3809/JVIRTEX.2002.00043","DOIUrl":"https://doi.org/10.3809/JVIRTEX.2002.00043","url":null,"abstract":"Revised: 8 August 2002Abstract We review the different designs and results of various previous models simulating the along-strikeinteraction between laterally offset faults, focusing on the formation of pull-apart basins in between strike-slipfaults or relay zones located between laterally offset normal faults.The design of most models traditionally includes the use of a basal sheet, whose edge acts as a velocitydiscontinuity onto which faults nucleate (Faugere and Brun, 1984; McClay and Ellis, 1987; Vendeville, 1991).One drawback of such design is that the location and orientation of faults in the relay zone are conditioned bythe shape of the edge of the basal sheet. An improved version of this design by Sims et al. (1999) using a strongviscous basal layer also forces faults to follow the basal velocity discontinuity. Using a third design by LeCalvez and Vendeville (1996), faults can freely propagate above a thin, weak viscous layer but fault blockscannot subside or rotate in response to deformation. We introduce a new design in which although fault locationis controlled by small instabilities at the brittle-ductile interface, faults can freely propagate along strike afterthey have nucleated. This design also allows fault blocks to subside, rise, or rotate in response to deformation.The main advantage of such design is that it forces the faults to form at a predetermined location. The ridgesare high enough (about one 20th of the brittle-layer thickness) to act as instabilities that trigger the nucleationof the main two faults, which thereby form with an initial lateral offset. But the ridges are low enough so that,once faults have formed in the brittle layer the fault planes act as dominant instabilities and freely propagatealong strike. Because this design provides much more freedom for fault interaction within the relay zone andfor fault-block rotation, results significantly differ from those of previous models.","PeriodicalId":201383,"journal":{"name":"Journal of The Virtual Explorer","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130743861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 41

From tonalite to mylonite: Coupled mechanical and chemical processes in foliation development and strain localization 从钠晶石到糜棱岩:片理发育和应变局部化的力学和化学耦合过程

Journal of The Virtual Explorer Pub Date : 1900-01-01 DOI: 10.3809/JVIRTEX.2009.00208

S. E. Johnson, J. Marsh, R. Vernon

引用次数: 15

Magma chamber elongation as an indicator of intraplate stress field orientation: "borehole breakout mechanism" and examples from the Late Pleistocene to Recent Kenya Rift Valley 岩浆房伸长作为板内应力场方向的指示:“钻孔突破机制”及晚更新世至肯尼亚裂谷的实例

Journal of The Virtual Explorer Pub Date : 1900-01-01 DOI: 10.3809/JVIRTEX.2000.00008

W. Bosworth, K. Burke, M. Strecker

引用次数: 22

Proterozoic Eastern Ghats Belt, India – a witness of multiple orogenies and its lineage with ancient supercontinents 印度元古代东高止山脉-多造山运动的见证及其与古代超级大陆的血统

Journal of The Virtual Explorer Pub Date : 1900-01-01 DOI: 10.3809/JVIRTEX.2009.00254

S. Karmakar, Sankar Bose, K. Das, S. Dasgupta

{"title":"Proterozoic Eastern Ghats Belt, India – a witness of multiple orogenies and its lineage with ancient supercontinents","authors":"S. Karmakar, Sankar Bose, K. Das, S. Dasgupta","doi":"10.3809/JVIRTEX.2009.00254","DOIUrl":"https://doi.org/10.3809/JVIRTEX.2009.00254","url":null,"abstract":"The Eastern Ghats Belt of India exposes a deep crustal section that witnessed multiple events of deformation, magmatism and metamorphism throughout the Proterozoic eon. Structural and petrological styles show variations in both, space and time. Available petrological data suggest that the deep crustal section of this belt was subjected to extreme thermal perturbation causing high temperature (HT) to ultrahigh temperature (UHT) metamorphism over an extended geographical area, the nature of which again varied in time and space. It is now understood that the 1000km long edifice of the Eastern Ghats Belt evolved in a phase-wise manner due to recurrent crust-building activities surrounding cratonic India. Consequently, it is possible to correlate these events with global-scale orogenies that united India with east Antarctica and Australia in different time and space coordinates. This prompts us to a hypothesis that history of such a mountain belt can actually reflect the evolution of Precambrian supercontinents, namely Columbia, Rodinia and Gondwana. We review the present state-of-the-art, but also point out that more rigorous investigation in future may add a quantitative flavor to this.","PeriodicalId":201383,"journal":{"name":"Journal of The Virtual Explorer","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121322297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

The Araguaia Belt, Brazil: Part Of A Neoproterozoic Continental-Scale Strike-Slip Fault System 巴西阿拉瓜亚带:新元古代大陆尺度走滑断裂系统的一部分

Journal of The Virtual Explorer Pub Date : 1900-01-01 DOI: 10.3809/JVIRTEX.2004.00107

M. A. Fonseca, Claudinei Gouveia de Oliveira, H. Evangelista

{"title":"The Araguaia Belt, Brazil: Part Of A Neoproterozoic Continental-Scale Strike-Slip Fault System","authors":"M. A. Fonseca, Claudinei Gouveia de Oliveira, H. Evangelista","doi":"10.3809/JVIRTEX.2004.00107","DOIUrl":"https://doi.org/10.3809/JVIRTEX.2004.00107","url":null,"abstract":"The Araguaia Belt is part of the Tocantins Orogen, a Neoproterozoic orogen that formed during the collision between the Amazonia, Sao Francisco/Congo and West African Paleo-Continents. This collision contributed to the assembly of West Gondwana. We mapped parts of the Araguaia Belt in its south and central portions in northern Brazil. Our mapping suggests two phases of deformation. The first resulted in the development of N-S trending amphibolite-facies transpresssional structures with a reverse-sinistral movement with ver- gence towards the Amazonian Craton on the west. The age of this deformation phase is possibly Paleoproterozoic. The second phase generated N-S dextral strike-slip faults that cross-cut older structures. This phase was accompanied by retrograde metamorphism. We propose that these strike-slip faults connect with the east-west trending dextral strike-slip faults in the Borborema Orogen on the northern margin of the Sao Francisco Craton. Move- ment on faults fringing the Amazonian Craton combined with that of the Araguaia-Borbor- ema strike-slip system, accommodated lateral escape of terranes wedged between the Amazonian and Sao Francisco-Congo Cratons during the Neoproterozoic. http://virtualexplorer.com.au/","PeriodicalId":201383,"journal":{"name":"Journal of The Virtual Explorer","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127214094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

Crystallization Versus Cooling Ages of White Micas: Dramatic Effect of K-poor Inclusions on 40 AR/ 39 AR Age Spectra 白色云母的结晶与冷却年龄:贫钾包裹体对40ar / 39ar年龄谱的显著影响

Journal of The Virtual Explorer Pub Date : 1900-01-01 DOI: 10.3809/JVIRTEX.2003.00083

W. Dunlap

引用次数: 4