. Occasional papers of the California Academy of Sciences . 35 it seems unlikely in a country so much folded and faulted and withso many exposures of the basement rocks, that the Eocene could re-main unknown if it were present. It is the writers conclusion thatthe provinces of Code and Veraguas were mostly land areas in Eocenetime. The deposition of the late Eocene seems to coincide with thedying phases of a vulcanism of which the greates^^-aetivity of theperiod was in Darien Province around the head of San Miguel all the Eocene is of shallow water deposition. Oligocene Oligoce
. Occasional papers of the California Academy of Sciences . 35 it seems unlikely in a country so much folded and faulted and withso many exposures of the basement rocks, that the Eocene could re-main unknown if it were present. It is the writers conclusion thatthe provinces of Code and Veraguas were mostly land areas in Eocenetime. The deposition of the late Eocene seems to coincide with thedying phases of a vulcanism of which the greates^^-aetivity of theperiod was in Darien Province around the head of San Miguel all the Eocene is of shallow water deposition. Oligocene Oligocene sediments are of two distinct types, marine depositslaid down in waters of moderate depth, and terrestrial deposits, con-sisting largely of volcanic elastics, with some terrestrial and shallow-water marine sediments. The principal centers of volcanic activity inOligocene time were the Pearl Islands of Panama Bay (fig. 3), andthe shores of San Miguel Bay; and central Panama from the CanalZone to Monti jo Bay. The volcanic elastics occur interbedded with.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectscience, bookyear1890
