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Fulgurites in the southern central Sahara, Republic of Niger and their palaeoenvironmental significance
Zitieren Sie bitte immer diese 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.…
Autor(en): | Barbara Sponholz, Roland Baumhauer, P. Felix-Hennignsen |
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URN: | urn:nbn:de:bvb:20-opus-63337 |
Dokumentart: | Artikel / Aufsatz in einer Zeitschrift |
Institute der Universität: | Fakultät für Geowissenschaften (bis Sept. 2007) / Institut für Geographie |
Sprache der Veröffentlichung: | Englisch |
Erscheinungsjahr: | 1993 |
Originalveröffentlichung / Quelle: | In: The Holocene (1993) 3, 2, 97 - 104 |
Allgemeine fachliche Zuordnung (DDC-Klassifikation): | 5 Naturwissenschaften und Mathematik / 55 Geowissenschaften, Geologie / 550 Geowissenschaften |
Normierte Schlagworte (GND): | Sahara; Niger |
Freie Schlagwort(e): | Fulgurite Holocene; Neolithic; Sahara; climatic change; fulgurites; lightning; palaeosols; thunderstorms |
Datum der Freischaltung: | 29.08.2011 |
Lizenz (Deutsch): | Deutsches Urheberrecht |