Mechanistic solutions to the opening of the Gulf of Mexico

Geology
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Abstract

Two mechanistic models-which are unlike the traditional plate-tectonic landfill models used for most proposed Pangea reconstructions of the Yucatán block-relate the Mesozoic opening of the Gulf of Mexico directly to the movement of the North and South American plates: (1) a previous piggyback model in which Yucatán moves with South America out of the western gulf and (2) a new edge-driven model in which the motion of the Yucatán block is caused by forces applied to its margins by the movement of the North and South American plates. In the second model, Yucatán moves out of the northern Gulf of Mexico as a gear or roller bearing. On the basis of magnetic edge anomalies around the gulf, this edge-driven model predicts that from the Bathonian to Tithonian (~170 to ~50 Ma), Yucatán was rotated ~60° counterclockwise as a rigid block between North and South America with rift propagation and extension occurring simultaneously in the Gulf of Mexico and Yucatán Basin.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Mechanistic solutions to the opening of the Gulf of Mexico
Series title Geology
DOI 10.1130/0091-7613(1994)​022<0507:MSTTOO>​2.3.CO;2
Volume 22
Issue 6
Year Published 1994
Language English
Publisher Geological Society of America
Publisher location Boulder, CO
Contributing office(s) Woods Hole Coastal and Marine Science Center
Description 4 p.
First page 507
Last page 510
Other Geospatial Gulf of Mexico
Online Only (Y/N) N
Additional Online Files (Y/N) N
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