- Tytuł:
- High-temperature restite enclave as an evidence of deep seated parent magma melting of the Będkowska Valley granodirite (Silesian-Cracow area, South Poland)
- Autorzy:
- Wolska, A.
- Powiązania:
- https://bibliotekanauki.pl/articles/191648.pdf
- Data publikacji:
- 2004
- Wydawca:
- Polskie Towarzystwo Geologiczne
- Tematy:
-
Będkowska Valley granodiorite
dark micaceous enclave
restite - Opis:
- In the borehole DB-5, at a depth 1370.0 m dark micaceous enclave in granodiorite from Będkowska Valley was found. A sharp contact enclave/granodiorite is observed. The transition zone is irregularly developed around the enclave studied. It is a small enclave (3 x 6 cm), discoidal in shape. The microstructure of micaceous enclave is fine-blastic; crystalloblasts of rock-forming minerals are 0.2-0.5 mm in size. This enclave consists of: Fe-biotite (56-62 vol.%), plagioclase Ca-Na (34-40 vol.%), spinel (magnetite), corundum, and sericitic pseudo- morphs after cordierite. Its mineralogical composition is different from the Będkowska Valley granodiorite, what suggests that this rock is a medium/high-temperature restite. This rock represents residuum after partial melting of granodiorite magma in deep levels of basement of the Małopolska Massif.
- Źródło:
-
Annales Societatis Geologorum Poloniae; 2004, 74, No 1; 21-33
0208-9068 - Pojawia się w:
- Annales Societatis Geologorum Poloniae
- Dostawca treści:
- Biblioteka Nauki
Artykuł