Discordant mid-Cretaceous paleomagnetic pole from the Zaza Terrane of central Cuba

Journal Article · Fri Mar 01 00:00:00 EST 1991 · Geophysical Research Letters (American Geophysical Union); (United States)

DOI:https://doi.org/10.1029/91GL00461· OSTI ID:5511977

Renne, P R; Doppelhammer, S K; Hargraves, R B ^[1]; Scott, G; Cala, E L

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1. Princeton Univ. (United States)

Thermal demagnetization of samples from five sites in mid-Cretaceous volcaniclastic and carbonate rocks of south-central Cuba reveals two or more components of magnetization. A pre-folding magnetite borne component is recognized in all, but was difficult to isolate from secondary components in many specimens. Remagnetization circle analysis, using data for 42 specimens from all five sites, yields a pole at 30.7{degree}N Lat., 193.3{degree}E Long. This pole is discordant with respect to the North American APWP, indicating 43{degree} {plus minus} 16{degree} of anticlockwise rotation and 8{degree} {plus minus} 6{degree} of northward displacement since the mid-Cretaceous. This result suggests that part or all of Cuba was transported on the Caribbean plate before accretion to North America in the Eocene.

• OSTI ID: 5511977
• Journal Information: Geophysical Research Letters (American Geophysical Union); (United States), Vol. 18:3; ISSN 0094-8276
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
CUBA
GEOLOGIC FORMATIONS
PALEOMAGNETISM
CRETACEOUS PERIOD
DEMAGNETIZATION
GEOMAGNETIC COORDINATES
PLATE TECTONICS
ROTATION
VOLCANIC ROCKS
COORDINATES
DEVELOPING COUNTRIES
GEOLOGIC AGES
GREATER ANTILLES
IGNEOUS ROCKS
ISLANDS
LATIN AMERICA
MAGNETISM
MESOZOIC ERA
MOTION
ROCKS
TECTONICS
WEST INDIES
580000* - Geosciences