词汇 | granodiorite |
释义 | BETA Examples of granodioritegranodiorite isn’t in the Cambridge Dictionary yet. You can help! Igneous lithologies vary from diorite through granodiorite, and granite to pegmatitic granite. Sample 5152 collected eight kilometres east of this contact is a biotite- and hornblende-bearing granodiorite. The granodiorite provided a large amount of zircon (> 1 g). The major part of the granodiorite stock, including the peripheral portion, is hydrothermally altered. Their mineralogy includes amphibole and pyroxene, and biotite in the granodiorite. They are polymictic and especially rich in reddened acid volcanic fragments and large granodiorite clasts. The sample was also taken from an outcrop away from any exposed granodiorite sheets. However, granitic melts commonly contain inherited zircons, and this granodiorite is no exception. Both diorite and granodiorite intrude the gabbro, with granodiorite being the last intruded. In marked contrast, the central block exposes a significantly wider spectrum of lithologies ranging from diorite through granodiorite to alkali granite. The pluton is lithologically diverse, but is mainly composed of hypersthene- augite gabbros with minor pyroxenite, anorthosite, tonalite, granodiorite and granite. The pluton is mainly composed of monzogranite and granodiorite. This later deformation, spatially linked to a small granodiorite body in the southwest, is characterized by the development of retrogressive chlorite after white micas and calcite. The granodiorite is composed of plagioclase, alkali feldspar, quartz, amphibole and biotite more or less altered to chlorite, epidote and calcite with accessory apatite, zircon and titanite. This is a grey, medium-grained granodiorite. Inveran lithologies, like their correlatives in the two adjoining areas, form a continuous trend from quartz monzodiorite (enclaves) through granodiorite to granite. This granodiorite, previously referred to as 'adamellite', can clearly be seen to post-date the gabbro. |
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