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Scientific paper
Jun 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985rpesc.......26p&link_type=abstract
In its USSR Rept.: Earth Sci. (JPRS-UES-85-006) p 26 (SEE N86-12630 03-42) Transl. into ENGLISH from Dokl. Akad. Nauk SSSR (Mo
Other
Basalt, Geology, Ocean Dynamics, Oceanographic Parameters, Sediments, Volcanology, Atlantic Ocean, Earth Crust, Geodynamics, Pacific Ocean, Planetary Evolution, Sedimentary Rocks
Scientific paper
Data on the time of formation of tholeiitic basalts of different ages in the midocean ridges are incomplete. Based on studies of the East Pacific Rise and the western limb of the Mid-Atlantic Ridge, an attempt is made to explain differences in the structure of the first and second layers of the ocean on the one hand and volcanic-sedimentary series of various stages of development of eugeosynclinal zones in the Paleozoic folded belts on the other. Among the widely varied structures of the oceanic crust, the contemporary oceans represent a type characterized by the presence of a single world system of narrow volcanically active ocean spreading centers. Reconstructed paleoocean structures arose in a more complex geodynamic situation than the oceans. They are characterized by distributed spreading, which appeared in the contemporary oceans in the early stages of their development. The essence of evolution of the Phanerozoic structures with the oceanic type crust was one of changes from smaller but more complex structures and combinations to larger and simpler structures. The mesooceans can be considered transitional structures.
Pushcharovskiy Y. M.
Ruzhentsev S. V.
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