Zircons from metasediments and granitoids in the high-grade Lacorne block within the low-grade Archean Abitibi greenstone belt have been dated by single zircon Pb-evaporation technique, yielding {sup 207}Pb/{sup 206}Pb minimum ages. Detrital zircons in the mature clastic metasediments of the Lacorne block display a range of ages from ...
Energy Citations Database
-1412.531 Irving, E., Naldrett, A.J., 1977. Paleomagnetism in Abitibi Greenstone Belt and Abitibi532 and Matachewan, and northeastern Madagascar is also placed along the India133 margin based on geochronological and geological and northeastern Madagascar. The155 duration of magmatism and the source of igneous ...
E-print Network
of olivine and clinopyroxene spinifex flows from Alexo, Abitibi Greenstone Belt, Ontario, Canada. Contrib.A., and Stormer J.S. (1989) Rio Grande rift volcanism: Northeastern Jemez zone, New Mexico. Memoir 46, New Mexico of a 2.41 Ga remarkably fresh komatiitic basalt lava lake in Lion Hills, central Vetreny Belt, ...
The Abitibi belt is one of the largest and most extensively studied Late Archean greenstone belts. The structural geology of the Abitibi belt consists of one generation of upright to slightly overturned, doubly plunging first-order folds with half-wavelengths of 20 60 km, ...
NASA Astrophysics Data System (ADS)
The Late Archean Abitibi greenstone belt, in SE Superior Province, is one of the largest contiguous greenstone belts on Earth. Geochronological data from upper crustal rocks indicate it was formed by volcanism and plutonism that spanned 2760 Ma through 2660 Ma. The classical model for the ...
are virus-specific rather than generally immunosuppressive. For ex- ample, big brown bats (Eptesicus fuscus.K.) (Right panel) Big brown bat (Eptesicus fuscus), host of a newly recognized coronavirus in North America
