Abstract
The origin of anorogenic alkaline granites (A-type granites) is a long-standing
geological problem. In the Arabian-Nubian Shield (ANS) A-type magmatism
occurred in a post-orogenic setting at the latest Precambrian, postdating the formation
of a vast calc-alkaline granitic batholith. A-type magmas form only 10% of the
exposed ANS, but are geographically scattered and well represented in the outcrops in
south Israel, including both plutonic and volcanic rocks. Previous petrogenetic and
geochemical studies suggest that A-type rocks of south Israel originated by the
differentiation of mantle-derived magmas without any notable contribution of crustal
sources.
geological problem. In the Arabian-Nubian Shield (ANS) A-type magmatism
occurred in a post-orogenic setting at the latest Precambrian, postdating the formation
of a vast calc-alkaline granitic batholith. A-type magmas form only 10% of the
exposed ANS, but are geographically scattered and well represented in the outcrops in
south Israel, including both plutonic and volcanic rocks. Previous petrogenetic and
geochemical studies suggest that A-type rocks of south Israel originated by the
differentiation of mantle-derived magmas without any notable contribution of crustal
sources.
| Original language | English |
|---|---|
| Title of host publication | Israel Geological Society |
| Subtitle of host publication | Annual Meeting |
| Editors | Sigal Abramovich |
| Publisher | Efrat 2000 |
| Pages | 35-35 |
| Number of pages | 1 |
| Volume | 2005 |
| State | Published - Apr 2005 |