In:
Geophysical Research Letters, American Geophysical Union (AGU), Vol. 10, No. 12 ( 1983-12), p. 1133-1136
Abstract:
The high liquidus temperatures of Archean komatiites and the low geothermal gradients in Archean continents appear to give contradictory indications of temperatures in the Archean mantle. We resolve this contradiction in terms of an idealized model of convection in the Archean mantle. We suggest that temperatures in the Archean mantle were no more than 100°C higher than at present, that komatiites originate from the hot lower boundary layer of a non‐steady convection cell and that Archean continents were formed near subduction zones where near‐surface temperature gradients were lower than elsewhere in the convecting mantle.
Type of Medium:
Online Resource
ISSN:
0094-8276
,
1944-8007
DOI:
10.1029/GL010i012p01133
Language:
English
Publisher:
American Geophysical Union (AGU)
Publication Date:
1983
detail.hit.zdb_id:
2021599-X
detail.hit.zdb_id:
7403-2
SSG:
16,13
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