Abstract
A suite of tonalite-granodiorite and monzogranite forms a huge old granite batholith between qena and Safaga, Eastern Desert, Egypt. The batholith was originated from the fractional crystallization of a peraluminous calk-alkaline magma rich in silica and of low potassium content. It is developed in an island arc tectonic setting. The rocks forming the batholith are depleted in both U and Th elements. However, a gradual increase in these two elements from tonalite to monzogranite was observed. Zircon and sphene are responsible for U and Th contents in these rocks. Rh/Sr isotope age determination reported an age of 632.8 {+-} 4.6 Ma for these old granitoids. The low initial{sup 87} Sr/{sup 86} Sr ratio in these rocks suggested their mantle origin or derivation from lower crustal materials with low Rb/Sr ratios and short residence in the crust. 10 figs., 5 tabs.
Attawiya, M Y;
Nossair, L M;
El-Debeiky, A;
[1]
Ragab, A I
[2]
- Nuclear Materials Authority, Cairo, (Egypt)
- Ain Sahms Univ., Cairo, (Egypt)
Citation Formats
Attawiya, M Y, Nossair, L M, El-Debeiky, A, and Ragab, A I.
Geology, petrography, Geochemistry, and geochronology of the old granite batholith between Quen and Safaga, eastern desert, Egypt. Vol. 3..
Egypt: N. p.,
1996.
Web.
Attawiya, M Y, Nossair, L M, El-Debeiky, A, & Ragab, A I.
Geology, petrography, Geochemistry, and geochronology of the old granite batholith between Quen and Safaga, eastern desert, Egypt. Vol. 3..
Egypt.
Attawiya, M Y, Nossair, L M, El-Debeiky, A, and Ragab, A I.
1996.
"Geology, petrography, Geochemistry, and geochronology of the old granite batholith between Quen and Safaga, eastern desert, Egypt. Vol. 3."
Egypt.
@misc{etde_455831,
title = {Geology, petrography, Geochemistry, and geochronology of the old granite batholith between Quen and Safaga, eastern desert, Egypt. Vol. 3.}
author = {Attawiya, M Y, Nossair, L M, El-Debeiky, A, and Ragab, A I}
abstractNote = {A suite of tonalite-granodiorite and monzogranite forms a huge old granite batholith between qena and Safaga, Eastern Desert, Egypt. The batholith was originated from the fractional crystallization of a peraluminous calk-alkaline magma rich in silica and of low potassium content. It is developed in an island arc tectonic setting. The rocks forming the batholith are depleted in both U and Th elements. However, a gradual increase in these two elements from tonalite to monzogranite was observed. Zircon and sphene are responsible for U and Th contents in these rocks. Rh/Sr isotope age determination reported an age of 632.8 {+-} 4.6 Ma for these old granitoids. The low initial{sup 87} Sr/{sup 86} Sr ratio in these rocks suggested their mantle origin or derivation from lower crustal materials with low Rb/Sr ratios and short residence in the crust. 10 figs., 5 tabs.}
place = {Egypt}
year = {1996}
month = {Mar}
}
title = {Geology, petrography, Geochemistry, and geochronology of the old granite batholith between Quen and Safaga, eastern desert, Egypt. Vol. 3.}
author = {Attawiya, M Y, Nossair, L M, El-Debeiky, A, and Ragab, A I}
abstractNote = {A suite of tonalite-granodiorite and monzogranite forms a huge old granite batholith between qena and Safaga, Eastern Desert, Egypt. The batholith was originated from the fractional crystallization of a peraluminous calk-alkaline magma rich in silica and of low potassium content. It is developed in an island arc tectonic setting. The rocks forming the batholith are depleted in both U and Th elements. However, a gradual increase in these two elements from tonalite to monzogranite was observed. Zircon and sphene are responsible for U and Th contents in these rocks. Rh/Sr isotope age determination reported an age of 632.8 {+-} 4.6 Ma for these old granitoids. The low initial{sup 87} Sr/{sup 86} Sr ratio in these rocks suggested their mantle origin or derivation from lower crustal materials with low Rb/Sr ratios and short residence in the crust. 10 figs., 5 tabs.}
place = {Egypt}
year = {1996}
month = {Mar}
}