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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Age and paleoenvironment of the Maastrichtian to Paleocene of the Mahajanga Basin, Madagascar: A multidisciplinary approach
Marine Micropaleontology, Volume 47, No. 1-2, Year 2003
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Description
Lithology, geochemistry, stable isotopes and integrated high-resolution biostratigraphy of the Berivotra and Amboanio sections provide new insights into the age, faunal turnovers, climate, sea level and environmental changes of the Maastrichtian to early Paleocene of the Mahajanga Basin of Madagascar. In the Berivotra type area, the dinosaur-rich fluvial lowland sediments of the Anembalemba Member prevailed into the earliest Maastrichtian. These are overlain by marginal marine and near-shore clastics that deepen upwards to hemipelagic middle neritic marls by 69.6 Ma, accompanied by arid to seasonally cool temperate climates through the early and late Maastrichtian. An unconformity between the Berivotra Formation and Betsiboka limestone marks the K-T boundary, and juxtaposes early Danian (zone Plc? or Pld) and latest Maastrichtian (zones CF2-CF1, Micula prinsii) sediments. Seasonally humid warm climates began near the end of the Maastrichtian and prevailed into the early Danian, accompanied by increased volcanic activity. During the late Danian (zones Pld-P2), a change to seasonally arid climates was accompanied by deepening from middle to outer neritic depths. © 2002 Elsevier Science B.V. All rights reserved.
Authors & Co-Authors
Abramovich, S.
United States, Princeton
Princeton University
Keller, Gerta
United States, Princeton
Princeton University
Adatte, Thierry
Switzerland, Neuchatel
Université de Neuchâtel
Stinnesbeck, W.
Germany, Karlsruhe
Karlsruher Institut Für Technologie, Campus Süd
Hottinger, L.
Switzerland, Basel
Naturhistorisches Museum Basel
Stueben, Doris
Germany, Karlsruhe
Karlsruher Institut Für Technologie, Campus Süd
Berner, Zsolt Attila
Germany, Karlsruhe
Karlsruher Institut Für Technologie, Campus Süd
Ramanivosoa, Beby
Madagascar
Musée Akiba
Randriamanantenasoa, A.
Madagascar, Majunga
Université de Mahajanga
Statistics
Citations: 91
Authors: 9
Affiliations: 6
Identifiers
Doi:
10.1016/S0377-8398(02)00094-4
ISSN:
03778398
Study Locations
Madagascar