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Fulgurites in the southern central Sahara, Republic of Niger and their palaeoenvironmental significance

Please always quote using this URN: urn:nbn:de:bvb:20-opus-63337
  • The mineralogical and chemical characteristics of fulgurites ( = natural glasses forrned by lightning strikes to the ground) from the southern Centrat Sahara (Niger) are presented. The fulgurites are indicators of thunderstorms. The northernmost important fulgurite formation in the study area reached up to about l8°N, with decreasing fulgurite concentration from south to north. Their distribution pattern and the relative dating of their formation in relation to Iandscape history from the Late Pleistocene onwards (e.g., palaeolakes, palaeosols),The mineralogical and chemical characteristics of fulgurites ( = natural glasses forrned by lightning strikes to the ground) from the southern Centrat Sahara (Niger) are presented. The fulgurites are indicators of thunderstorms. The northernmost important fulgurite formation in the study area reached up to about l8°N, with decreasing fulgurite concentration from south to north. Their distribution pattern and the relative dating of their formation in relation to Iandscape history from the Late Pleistocene onwards (e.g., palaeolakes, palaeosols), and to Neolithic settlement reveals their value as palaeoenvironmental indicators. They indicate: (1) local palaeoenvironmental conditions depending on the topographical situation in a complex dune relief; (2) climatic change during the mid-Holocene from northerly rains to southerly rains; and (3) the northernmost Iimit of important thunderstorrns and rainfall activity since this time in the southern Centrat Sahara.show moreshow less

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Metadaten
Author: Barbara Sponholz, Roland Baumhauer, P. Felix-Hennignsen
URN:urn:nbn:de:bvb:20-opus-63337
Document Type:Journal article
Faculties:Fakultät für Geowissenschaften (bis Sept. 2007) / Institut für Geographie
Language:English
Year of Completion:1993
Source:In: The Holocene (1993) 3, 2, 97 - 104
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 55 Geowissenschaften, Geologie / 550 Geowissenschaften
GND Keyword:Sahara; Niger
Tag:Fulgurite
Holocene; Neolithic; Sahara; climatic change; fulgurites; lightning; palaeosols; thunderstorms
Release Date:2011/08/29
Licence (German):License LogoDeutsches Urheberrecht