The biotite granodi orite gneiss varies from potassium feldspar augen gneiss along the east boundary of the map area to mylonite in the western part of its occurrence.
monzoni te and small er amounts of granodi ori te and grani te; a1 aski te dikes are a crosscutting phase. A potassium-argon age determination on biotite from
The granite and granodi-orite rocks are concentrated in the northern area of East Island, the metasedimentary rocks are located within an east-west running central zone of ...
"A white, nearly uniaxial muscovite occurs as veinlets and replacements in the granodi-orite near the Sunrise Copper Prospect, Sultan Basin, Snohomish County ...
0 granodi oritel I N I Formation () .2 Basalt of intrusives Z f'" 'I "" 1'1~+ •. mH';,* :§!W1B@) W n:: 0 Columbia River1Marine sed.nLlttJe B~tteJ1 Basalt r
gions of thinner continental crust to granodi-orite ﬁ granite plutons in regions of thicker continental crust. As a result of this magmatic migration, the banatitic
bottom in a basement of quartz-biotite schist and granodi-orite. Twenty-four cores were taken, and from the recov-ered sequence 28 samples were analyzed for the present
hanging wall against crystalline Cretaceous granodi- orite in the footwall appears to be critical to the devel- opment of the modern geothermal reservoir.
Esence granitoyidi, granodi-yorit ve mikrogranitlerle temsil edilmektedir. Granodiyoritik kayaçlar boylar› 5-30 cm aras›nda de¤iﬂen amfibolce
Abstract K-feldspar megacrysts in granite and granodi-orite plutons are generally inferred to be early crystallizing phases (grown to large sizes when the magma was mostly