Sedimentary and stratal patterns in jurassic successions of western Madagascar
facies, stratigraphy, and architecture of Gondwana breakup and drift sequences
dc.contributor.author | Geiger, Markus | |
dc.date.accessioned | 2010-10-12T18:55:13Z | |
dc.date.available | 2010-10-12T18:55:13Z | |
dc.date.issued | 2004 | |
dc.identifier.uri | http://hdl.handle.net/11858/00-1735-0000-0001-3154-2 | |
dc.description.abstract | Madagascar; Jurassic; Karoo; Gondwana; Breakup; Rift; Microfauna; Macrofauna; Ammonites; Indian Ocean. - The breakup of Gondwana along the former East African Orogen is widely interpreted to have lasted from the Late Palaeozoic to the Callovian. The present study indicates that the Permian-Triassic or Karoo phase of rifting was not responsible for the separation of East- and West-Gondwana, since that rift system failed in the Late Triassic. Instead the breakup of Gondwana occurred in the Late Liassic. The pre-rift phase in the Morondava Basin is represented by the Karoo deposits, and the syn-rift phase is recorded by Toarcian marine shales, locally overlain by Aalenian sandstones. A major Early Bajocian unconformity is interpreted as the breakup unconformity. The initial post-rift or drift phase is represented by the Bajocian-Bathonian carbonates, marls and sandstones of coastal plain environment and a coastal barrier/lagoon complex. During the Bathonian the siliciclastic shoreface system moved basinward. Callovian-Early Kimmeridgian shales with interbedded iron-oolites represent ... | |
dc.format.mimetype | application/pdf | |
dc.language.iso | eng | |
dc.publisher | Univ. Bremen | |
dc.rights.uri | http://e-docs.geo-leo.de/rights | |
dc.subject.ddc | 551 | |
dc.subject.gok | VAE 500 | |
dc.subject.gok | VDB 100 | |
dc.subject.gok | VEQ 300 | |
dc.title | Sedimentary and stratal patterns in jurassic successions of western Madagascar | |
dc.title.alternative | facies, stratigraphy, and architecture of Gondwana breakup and drift sequences | |
dc.type | monograph | |
dc.subject.gokverbal | Geotektonische Entwicklung der Erdkruste {Geologie} | |
dc.subject.gokverbal | Gondwana | |
dc.subject.gokverbal | Madagaskar {Geologie} | |
dc.identifier.doi | 10.23689/fidgeo-204 | |
dc.identifier.ppn | 489040578 | |
dc.type.version | publishedVersion | |
dc.relation.collection | Geologische Wissenschaften | |
dc.description.type | thesis |
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