SPECULATIONS ON MOUNTAIN BUILDING AND THE LOST PACIFICA CONTINENT

@article{Nur1978SPECULATIONSOM,
  title={SPECULATIONS ON MOUNTAIN BUILDING AND THE LOST PACIFICA CONTINENT},
  author={Amos M. Nur and Zvi Ben‐Avraham},
  journal={Journal of physics of the earth},
  year={1978},
  volume={26}
}
Extensive geological and geophysical evidence suggests that numerous fragments of continents, miniplates, and so called "island arcs" have been incorporated into the Circum Pacific continents. The old rocks exposed on these bodies bear strong evidence for continental origins. This leads to the speculation that a large continental mass existed once in what is now the Pacific Ocean. This mass-which we call the Pacifica continent-could have been part of the Pangea Super Continent, adjacent to… 

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References

SHOWING 1-10 OF 58 REFERENCES

Mesozoic California and the Underflow of Pacific Mantle

The Mesozoic evolution of California is interpreted as dominated by the underflow of oceanic mantle beneath the continental margin. Underflow during part of Late Cretaceous time of more than 2000 km

Plate Tectonics and the Japanese Islands: A Synthesis

The hot-spot hypothesis of Wilson and Morgan and the recent success in worldwide correlation of marine magnetic anomalies by Larson and his co-workers have enabled us to depict the Mesozoic and

Plate Tectonic Model for the Evolution of the Central Andes

Data on the geophysics and geology of the central Andes are interpreted in terms of plate theory and a model for Andean evolution is presented. Analysis of upper mantle structure and seismicity shows

Mountain belts and the new global tectonics

Analysis of the sedimentary, volcanic, structural, and metamorphic chronology in mountain belts, and consideration of the implications of the new global tectonics (plate tectonics), strongly indicate

Spreading of the Ocean Floor: New Evidence

TLDR
The hypothesis that magnetic anomalies may indicate the nature of oceanic fracture zones and distinguish the parts of the ridge system that are actively spreading is suggested and data derived during the past year lend remarkable support to the hypothesis.

Ancient borderland terranes of the North American Cordillera: Correlation and microplate tectonics

Enigmatic Paleozoic and Precambrian sequences rich in volcanic and plutonic rocks form discrete terranes along the outer border of the North American Cordillera. These borderland terranes occur in

Late Mesozoic Evolution of the Western Pacific Ocean

A set of east-trending magnetic anomalies located in the western equatorial Pacific Ocean near the Phoenix Islands is Early Cretaceous in age. The use of magnetic reversal model studies shows that

Reconstruction of Pangaea: Breakup and dispersion of continents, Permian to Present

We present a new continental drift reconstruction of the universal continent of Pangaea in the Permian plus a series of five world maps to depict the breakup and dispersion of continents with each
...