Geochronological and isotopic evidence for early Proterozoic crust in the eastern Arabian Shield
Geology
By: J. S. Stacey and C. E. Hedge
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Abstract
We report zircon U-Pb, feldspar common Pb, whole-rock Sm-Nd, and Rb-Sr data from sample Z-103, a fine-grained granodiorite from the Jabal Khida region of the Saudi Arabian Shield (lat 21°19′N; long 44°50′W). The measurements yield conclusive evidence for continental crust of early Proterozoic age (∼1,630 Ma) at that locality. Furthermore, lead-isotope data indicate an even earlier, perhaps Archean, crustal history for the source of the lower Proterozoic rocks.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Geochronological and isotopic evidence for early Proterozoic crust in the eastern Arabian Shield |
| Series title | Geology |
| DOI | 10.1130/0091-7613(1984)12<310:GAIEFE>2.0.CO;2 |
| Volume | 12 |
| Issue | 5 |
| Year Published | 1984 |
| Language | English |
| Publisher | Geological Society of America |
| Description | 4 p. |
| First page | 310 |
| Last page | 313 |