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Palynological Analysis of Amber-Bearing Clay from the Lower Cretaceous of Central Lebanon
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This paper is a contribution to the scientific project “The Study of the Fossil Insects in Lebanon and their Outcrops: Geology of the Outcrops – Historical and Biodiversity Evolution” and to the team project : "Biodiversity: Origin, Structure, Evolution and Geology" financed by the Lebanese University to the first author (DA).


Palynological Analysis of Amber-Bearing Clay from the Lower Cretaceous of Central Lebanon
Author:
  • Dany AZAR

    Dany AZAR

    1 Lebanese University, Faculty of Sciences II, Department of Natural Sciences, Fanar – Matn, PO box 26110217, Lebanon;2 UMR-CNRS 7207, Centre de Recherche sur la Paléobiodiversité et les Paléoenvironnements (CR2P), Muséum national dHistoire naturelle, Département Histoire de la Terre, CP 38, 57 rue Cuvier, 75231 Paris Cedex 05, France.;3 UMR-CNRS 7207, Centre de Recherche sur la Paléobiodiversité ?et les Paléoenvironnements (CR2P), Université Pierre et Marie Curie, case 104, 4 Place Jussieu, 75005 Paris, France.
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  • Jean DEJAX

    Jean DEJAX

    1 Lebanese University, Faculty of Sciences II, Department of Natural Sciences, Fanar – Matn, PO box 26110217, Lebanon;2 UMR-CNRS 7207, Centre de Recherche sur la Paléobiodiversité et les Paléoenvironnements (CR2P), Muséum national dHistoire naturelle, Département Histoire de la Terre, CP 38, 57 rue Cuvier, 75231 Paris Cedex 05, France.;3 UMR-CNRS 7207, Centre de Recherche sur la Paléobiodiversité ?et les Paléoenvironnements (CR2P), Université Pierre et Marie Curie, case 104, 4 Place Jussieu, 75005 Paris, France.
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  • Edwige MASURE

    Edwige MASURE

    1 Lebanese University, Faculty of Sciences II, Department of Natural Sciences, Fanar – Matn, PO box 26110217, Lebanon;2 UMR-CNRS 7207, Centre de Recherche sur la Paléobiodiversité et les Paléoenvironnements (CR2P), Muséum national dHistoire naturelle, Département Histoire de la Terre, CP 38, 57 rue Cuvier, 75231 Paris Cedex 05, France.;3 UMR-CNRS 7207, Centre de Recherche sur la Paléobiodiversité ?et les Paléoenvironnements (CR2P), Université Pierre et Marie Curie, case 104, 4 Place Jussieu, 75005 Paris, France.
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Fund Project:

This paper is a contribution to the scientific project “The Study of the Fossil Insects in Lebanon and their Outcrops: Geology of the Outcrops – Historical and Biodiversity Evolution” and to the team project : "Biodiversity: Origin, Structure, Evolution and Geology" financed by the Lebanese University to the first author (DA).

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    摘要:

    An amber-bearing lignitic layer of sandy clay from the Lower Cretaceous of Central Lebanon (Mderej-Hammana) yielded a well-preserved, moderately variegated palynoflora, which origin is mixed between land plants and marine microflora. Its detailed analysis led to fulfill its inventory, to propose a paleoenvironmental reconstruction, and to draw the paleoclimate which prevailed over the region: an estuarian area under a rather humid, temperate climate; a variety of ferns grew near the shore-side and in the inward land. A tiny piece of amber containing angiospermous pollen grains of stratigraphical interest allows a precise dating. The marine microflora, poorly diversified, includes chitinous foraminifer linings and dinoflagellate cysts, among which Early Aptian guide taxa are present; their occurrence slightly narrows the stratigraphical range indicated by some palynological taxa which are related to land plants.

    Abstract:

    An amber-bearing lignitic layer of sandy clay from the Lower Cretaceous of Central Lebanon (Mderej-Hammana) yielded a well-preserved, moderately variegated palynoflora, which origin is mixed between land plants and marine microflora. Its detailed analysis led to fulfill its inventory, to propose a paleoenvironmental reconstruction, and to draw the paleoclimate which prevailed over the region: an estuarian area under a rather humid, temperate climate; a variety of ferns grew near the shore-side and in the inward land. A tiny piece of amber containing angiospermous pollen grains of stratigraphical interest allows a precise dating. The marine microflora, poorly diversified, includes chitinous foraminifer linings and dinoflagellate cysts, among which Early Aptian guide taxa are present; their occurrence slightly narrows the stratigraphical range indicated by some palynological taxa which are related to land plants.

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Dany AZAR, Jean DEJAX, Edwige MASURE.2011. Palynological Analysis of Amber-Bearing Clay from the Lower Cretaceous of Central Lebanon[J]. ACTA GEOLOGICA SINICA(English edition),85(4):942~949

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  • 收稿日期:2011-01-01
  • 最后修改日期:2011-03-30
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