Biological memoirs最新文献

Section 4: Post-subduction, slab-window volcanism 第4节:俯冲后的板窗火山作用

Biological memoirs Pub Date : 2021-05-27 DOI: 10.1144/m55.4

引用次数: 0

Biological memoirs Pub Date : 2021-05-27 DOI: 10.1144/m55.6

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About this title - Volcanism in Antarctica: 200 Million Years of Subduction, Rifting and Continental Break-up 关于这个题目-南极洲的火山活动:2亿年的俯冲、裂谷和大陆分裂

Biological memoirs Pub Date : 2021-05-27 DOI: 10.1144/m55

{"title":"About this title - Volcanism in Antarctica: 200 Million Years of Subduction, Rifting and Continental Break-up","authors":"","doi":"10.1144/m55","DOIUrl":"https://doi.org/10.1144/m55","url":null,"abstract":"This memoir is the first to review all of Antarctica's volcanism between 200 million years ago and the Present. The region is still volcanically active. The volume is an amalgamation of in-depth syntheses, which are presented within distinctly different tectonic settings. Each is described in terms of (1) the volcanology and eruptive palaeoenvironments; (2) petrology and origin of magma; and (3) active volcanism, including tephrochronology. Important volcanic episodes include: astonishingly voluminous mafic and felsic volcanic deposits associated with the Jurassic break-up of Gondwana; the construction and progressive demise of a major Jurassic to Present continental arc, including back-arc alkaline basalts and volcanism in a young ensialic marginal basin; Miocene to Pleistocene mafic volcanism associated with post-subduction slab-window formation; numerous Neogene alkaline volcanoes, including the massive Erebus volcano and its persistent phonolitic lava lake, that are widely distributed within and adjacent to one of the world's major zones of lithospheric extension (the West Antarctic Rift System); and very young ultrapotassic volcanism erupted subglacially and forming a world-wide type example (Gaussberg).","PeriodicalId":84271,"journal":{"name":"Biological memoirs","volume":"12 1","pages":"NP - NP"},"PeriodicalIF":0.0,"publicationDate":"2021-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81911291","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: 17

Section 2: Gondwana break-up volcanism 第2节:冈瓦纳破裂火山作用

Biological memoirs Pub Date : 2021-05-27 DOI: 10.1144/m55.2

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Section 7: Active volcanoes 第七部分:活火山

Biological memoirs Pub Date : 2021-05-27 DOI: 10.1144/m55.7

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Section 1: Tectonic history and overview 第1节:构造历史和概况

Biological memoirs Pub Date : 2021-05-27 DOI: 10.1144/M55.1

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Section 3: Subduction-related volcanism 第3节:与俯冲有关的火山作用

Biological memoirs Pub Date : 2021-05-27 DOI: 10.1144/m55.3

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Section 5: Continental extension-related volcanism 第5节:与大陆伸展有关的火山作用

Biological memoirs Pub Date : 2021-05-27 DOI: 10.1144/m55.5

引用次数: 0

Introduction to volcanism in Antarctica: 200 million years of subduction, rifting and continental break-up 南极洲火山活动简介:2亿年的俯冲、裂谷和大陆分裂

Biological memoirs Pub Date : 2021-04-12 DOI: 10.1144/M55-2020-14

J. Smellie, K. Panter, A. Geyer

{"title":"Introduction to volcanism in Antarctica: 200 million years of subduction, rifting and continental break-up","authors":"J. Smellie, K. Panter, A. Geyer","doi":"10.1144/M55-2020-14","DOIUrl":"https://doi.org/10.1144/M55-2020-14","url":null,"abstract":"Antarctica has undergone several important phases of volcanism throughout its long history. It was formerly at the heart of Gondwana but, from early Jurassic time ( c. 200 Ma), it commenced the prolonged process of disintegration, which resulted in the dispersal and final disposition of the southern hemisphere continents that we are familiar with today (Veevers 2012; Storey and Granot 2021 ). As a consequence, volcanism has been particularly important in its construction and it is geographically widespread, although mainly located within West Antarctica (Fig. 1). Its effects have frequently been felt far outside of the continent. For example, it has been a driver of global mass extinctions (Burgess et al. 2015; Ernst and Youbi 2017) and it has potentially driven Antarctica climatically, and by implication the world, both into and out of glacials (Bay et al. 2006; McConnell et al. 2017). Conversely, Antarctica's volcanoes may have played a pivotal role in helping Life not only to survive multiple glacial episodes during the past few tens of millions of years but to undergo species diversification on the continent in spite of the dramatic climate variations (Fraser et al. 2014). Eruptions from Mount Erebus also represent a significant point source of gases and aerosols to the Austral polar troposphere, including affecting the ozone layer (Boichu et al. 2011; Zuev et al. 2015). Some of Antarctica's active volcanoes also have the potential to have a significant impact on southern hemisphere aviation (Geyer et al. 2017). Finally, Antarctica contains the world's largest and longest-lived glaciovolcanic province. The glaciovolcanic sequences contain a detailed record of the terrestrial Antarctic ice sheet going back to nearly 30 Ma and that record is now beginning to be tapped (e.g. Smellie et al. 2009; Smellie and Edwards 2016; Wilch et al. 2021 ). Despite these …","PeriodicalId":84271,"journal":{"name":"Biological memoirs","volume":"114 1","pages":"1 - 6"},"PeriodicalIF":0.0,"publicationDate":"2021-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83468588","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: 8

Chapter 7.4 Active volcanoes in Marie Byrd Land 第7.4章玛丽·伯德地的活火山

Biological memoirs Pub Date : 2021-04-12 DOI: 10.1144/M55-2019-29

N. Dunbar, N. Iverson, J. Smellie, W. Mcintosh, M. Zimmerer, P. Kyle

{"title":"Chapter 7.4 Active volcanoes in Marie Byrd Land","authors":"N. Dunbar, N. Iverson, J. Smellie, W. Mcintosh, M. Zimmerer, P. Kyle","doi":"10.1144/M55-2019-29","DOIUrl":"https://doi.org/10.1144/M55-2019-29","url":null,"abstract":"Abstract Two volcanoes in Marie Byrd Land, Mount Berlin and Mount Takahe, can be considered active, and a third, Mount Waesche, may be as well; although the chronology of activity is less well constrained. The records of explosive activity of these three volcanoes is well represented through deposits on the volcano flanks and tephra layers found in blue ice areas, as well as by the presence of cryptotephra layers found in West and East Antarctic ice cores. Records of effusive volcanism are found on the volcano flanks but some deposits may be obscured by pervasive glacerization of the edifices. Based on a compilation of tephra depths–ages in ice cores, the activity patterns of Mount Takahe and Mount Berlin are dramatically different. Mount Takahe has erupted infrequently over the past 100 kyr. Mount Berlin, by contrast, has erupted episodically during this time interval, with the number of eruptions being dramatically higher in the time interval between c. 32 and 18 ka. Integration of the Mount Berlin tephra record from ice cores and blue ice areas over a 500 kyr time span reveals a pattern of geochemical evolution related to small batches of partial melt being progressively removed from a single source underlying Mount Berlin.","PeriodicalId":84271,"journal":{"name":"Biological memoirs","volume":"16 1","pages":"759 - 783"},"PeriodicalIF":0.0,"publicationDate":"2021-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77328487","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: 13