Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s00445-006-0098-x |
Volcanoes of the Tibesti massif (Chad, northern Africa) | |
Permenter, Jason L.; Oppenheimer, Clive | |
通讯作者 | Permenter, Jason L. |
来源期刊 | BULLETIN OF VOLCANOLOGY
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ISSN | 0258-8900 |
EISSN | 1432-0819 |
出版年 | 2007 |
卷号 | 69期号:6页码:609-626 |
英文摘要 | The Tibesti massif, one of the most prominent features of the Sahara desert, covers an area of some 100,000 km(2). Though largely absent from scientific inquiry for several decades, it is one of the world’s major volcanic provinces, and a key example of continental hot spot volcanism. The intense activity of the TVP began as early as the Oligocene, though the major products that mark its surface date from Lower Miocene to Quaternary (Furon (Geology of Africa. Oliver & Boyd, Edinburgh (trans 1963, orig French 1960), pp 1-377, 1963)); Gourgaud and Vincent (J Volcanol Geotherm Res 129:261-290, 2004). We present here a new and consistent analysis of each of the main components of the Tibesti Volcanic Province (TVP), based on examination of multispectral imagery and digital elevation data acquired from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER). Our synthesis of these individual surveys shows that the TVP is made up of several shield volcanoes (up to 80 km diameter) with large-scale calderas, extensive lava plateaux and flow fields, widespread tephra deposits, and a highly varied structural relief. We compare morphometric characteristics of the major TVP structures with other hot spot volcanoes (the Hawaiian Islands, the Galapagos Islands, the Canary and Cape Verdes archipelagos, Jebel Marra (western Sudan), and Martian volcanoes), and consider the implications of differing tectonic setting (continental versus oceanic), the thickness and velocity of the lithosphere, the relative sizes of main volcanic features (e.g. summit calderas, steep slopes at summit regions), and the extent and diversity of volcanic features. These comparisons reveal morphologic similarities between volcanism in the Tibesti, the Galapagos, and Western Sudan but also some distinct features of the TVP. Additionally, we find that a relatively haphazard spatial development of the TVP has occurred, with volcanism initially appearing in the Central TVP and subsequently migrating to both the Eastern and Western TVP regions. |
英文关键词 | Tibesti volcanic province Tibesti massif TVP ASTER continental hot spot Chad African geology |
类型 | Article |
语种 | 英语 |
国家 | USA ; England |
收录类别 | SCI-E |
WOS记录号 | WOS:000245490800002 |
WOS关键词 | CANARY-ISLANDS ; FRENCH INSTITUTE ; GALAPAGOS ARCHIPELAGO ; CONVECTION PLUMES ; MANTLE PLUMES ; PLATE MOTION ; ORIGIN ; EVOLUTION ; CALDERA ; ASTER |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/153729 |
作者单位 | (1)Coll Charleston, Dept Geol & Environm Geosci, Charleston, SC 29425 USA;(2)Univ Cambridge, Dept Geog, Cambridge CB2 3EN, England |
推荐引用方式 GB/T 7714 | Permenter, Jason L.,Oppenheimer, Clive. Volcanoes of the Tibesti massif (Chad, northern Africa)[J],2007,69(6):609-626. |
APA | Permenter, Jason L.,&Oppenheimer, Clive.(2007).Volcanoes of the Tibesti massif (Chad, northern Africa).BULLETIN OF VOLCANOLOGY,69(6),609-626. |
MLA | Permenter, Jason L.,et al."Volcanoes of the Tibesti massif (Chad, northern Africa)".BULLETIN OF VOLCANOLOGY 69.6(2007):609-626. |
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