Abstract
The nearly latitudinal giant fracture zones in the northeastern Pacific Ocean are accompanied by narrow fault-line uplifts making up tectonic couples that strike for thousands of kilometers. They are especially distinctly expressed in the gravity map of the World Ocean [7]. As is shown in the paper, a compensation mechanism of deep mass displacement operates in the uplift-deepwater trench system. The uplifts have similar asymmetric structures, which reflects the long-term unidirectional effect of the deep geodynamic stress. In my opinion, the system of the fault-line uplifts began to form at the Cretaceous-Cenozoic boundary.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
B. I. Vasil’ev, Geology and Origin of the Pacific Ocean (Dal’nauka, Vladivostok, 2009) [in Russian].
Yu. P. Neprochnov, G. M. Valyashko, L. P. Volokitina, et al., “Detailed Geophysical and Geological Research in the Mendocino Fracture Zone,” Okeanologiya 33(2), 253–262 (1993).
Yu. P. Neprochnov, V. V. Sedov, G. M. Valyashko, et al., “Results of Detailed Geophysical and Geological Research in the Murray Fracture Zone,” Okeanologiya 33(4), 589–597 (1993).
O. P. Polyansky and N. L. Dobretsov, “Model of the Development of a Sedimentary Basin of the Pull-Apart Type,” Dokl. Earth Sci. 380(7), 800–805 (2001).
Yu. M. Pushcharovsky, “First-Order Linear Tectonovolcanic Ridges in Oceans,” Geotectonics 45(2), 101–112 (2011).
Yu. M. Pushcharovsky and E. N. Melankholina, Tectonic Evolution of the Earth. The Pacific Ocean and Its Framework (Nauka, Moscow, 1992) [in Russian].
D. Sandwell and W. H. F. Smith, Marine Gravity Anomaly from Satellite Altimetry Map (La Jolla, 1997).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © Yu.M. Pushcharovsky, 2013, published in Geotektonika, 2013, Vol. 47, No. 2, pp. 3–11.
Rights and permissions
About this article
Cite this article
Pushcharovsky, Y.M. Fault-line uplifts in the Northeastern Pacific. Geotecton. 47, 67–74 (2013). https://doi.org/10.1134/S0016852113020052
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0016852113020052