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Iranian Journal of Earth Sciences
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Gaxiola, J. (2011). Application of glauconite and fossil palynomorphs in reconstructing the Liassic paleogeography just before the opening of the Gulf of Mexico (Part II). Iranian Journal of Earth Sciences, 3(1), 25-33.
Jaime Rueda Gaxiola. "Application of glauconite and fossil palynomorphs in reconstructing the Liassic paleogeography just before the opening of the Gulf of Mexico (Part II)". Iranian Journal of Earth Sciences, 3, 1, 2011, 25-33.
Gaxiola, J. (2011). 'Application of glauconite and fossil palynomorphs in reconstructing the Liassic paleogeography just before the opening of the Gulf of Mexico (Part II)', Iranian Journal of Earth Sciences, 3(1), pp. 25-33.
Gaxiola, J. Application of glauconite and fossil palynomorphs in reconstructing the Liassic paleogeography just before the opening of the Gulf of Mexico (Part II). Iranian Journal of Earth Sciences, 2011; 3(1): 25-33.

Application of glauconite and fossil palynomorphs in reconstructing the Liassic paleogeography just before the opening of the Gulf of Mexico (Part II)

Article 4, Volume 3, Issue 1, Winter and Spring 2011, Page 25-33  XML PDF (1104 K)
Document Type: Original Article
Author
Jaime Rueda Gaxiola*
Geology, Unidad de Ciencias de la Tierra-ESIA.IPN, Calzada Ticom·n # 600. Del. Gustavo A. Madero. Col. San JosÈ Ticom·n, MÈxico, D.F. 07330 Mexico
Abstract
In (Part I), it was stated that red beds, conglomerates and salt were considered azoic and problematic rocks, but Paleopalynology and Inorganic Geochemistry proved to be useful for placing them in time and space. In the early last century, in Mexican NE region, only three Mesozoic red bed units were differentiated, dated as Late Triassic to Late Jurassic. It was important stratigraphically to place them properly as they were considered to be the basement of the marine petroliferous sequence in some Mexican Gulf of Mexico sub-basins. Palynostratigraphic studies since 1969, and X- ray analyses since 1989 allowed to place, in time and space, the Cahuasas, Huizachal, La Joya, and La Boca red bed units, outcropping at the Huizachal-Peregrina and Huayacocotla anticlinoria and, recently, the Rosario, Conglomerado-Prieto and Cuarcítica-Cualac units at the Tlaxiaco Anticlinorium. In this (Part II) it is described the method used for reconstructing the paleogeographic distribution of these red beds. Their correlation permitted to place the Liassic units as deposited in a half- graben connected to an Epicontinental Sinemurian Sea. This sea, during the Middle Jurassic, was invaded by the Tethysian waters through the Hispanic Corridor formed across the new Gulf of Mexico, which was originated by a hot spot with a triple junction.
Keywords
Glauconite; Palynostratigraphy; X- ray analyses; Gulf of Mexico Origin
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