The new global tectonics and reality Report 1

Types of pyrite deposits and provinces

“…Thus, in mid-ocean rifts, the ratio of magnesium to iron is higher than in eugeosyn clines, and there are smaller amounts of G.A. TVALCHRELIDZE potassium (always less than unity) and ferrous iron (Marakushev and Frolova, 1972;Sheynmann, 1973Sheynmann, , 1974Smirnov, 1975). Only oceanic rifts, which concentrate toward the continents, may be transformed during their subsequent history into eugeosynclines, whereas rifts that occupy a mid-oceanic position, have retained unchanged the nature of the magmatism at least since Late Cretaceous time.…”

Proceedings of the first annual William Pecora Memorial Symposium, October 1975, Sioux Falls, South Dakota

“…The controversy which exists in the world literature is reflected well in the volume of papers "Plate Tectonics-Assess ments and Reassessments," edited by Kahle (1974). There are a number of other critical papers that should be mentioned, especially that by Sheinmann (1973).…”