Plagioclase transfer from a host granodiorite to mafic microgranular enclaves: diverse records of magma mixing
نویسندگان
چکیده
منابع مشابه
شواهد کانی‌شناسی و ژئوشیمیایی آمیختگی ماگمایی در برونبومهای موجود در سنگهای گرانودیوریتی منطقه آستانه (جنوب غرب اراک)
Astaneh granodiorite intrusion, located at south west of Arak, includes an abundant rounded and rarely ellipsoid microgranular enclaves composed of gabbro, diorite and quartz diorite. The diameter of enclaves ranges from a few millimeters to 40 centimeters. These enclaves are very fine-grained and show chilled margins. The size of crystals decreases gardually from center toword margin. The chil...
متن کاملترکیب شیمیایی کانی ها و پیدایش برونبومهای ریزدانه مافیکی در سنگهای پلوتونیکی حد واسط - اسیدی منطقه کوه زر در جنوب - شرقی سمنان
The Kub-e- Zar area is located about 75 Km in southeast of Semnan. Electron microprobe analyses of plagioclases of mafic microgranular enclaves and plutonic host rocks from Kuh-e-Zar area display that they have normal, oscillatory and reverse zoning, so that plagioclase cores of reverse zoning in enclaves have oligoclase and andesine compositions and their rims have andesine and laboradori...
متن کاملThe role of feldspar crystals zoning in interpreting the magmatic evolution of the Goushe granitoid Pluton (SE of Boroujerd)
The Goushe granitoid Pluton is located southeast of Boroujerd. The study area is composed of granite, granodiorite and the microgranular enclaves located in it with the granodiorite to quartzmonzodiorite combination. The microgranular enclaves presence along with evidence of the presence of the non-equilibrium textures such as dissolved margin and plagioclase zoning, sieve textures, mafic clots...
متن کاملویژگیهای بافتی و شیمی کانی در مجموعه‌ی پلوتونیک قروه (کردستان): شواهدی بر پدیده آمیختگی/ اختلاط ماگمائی
The study area is located in the southern part of Qorveh granitoid complex. Investigation of textural and mineral chemistry evidence in granitoid host with composition of granodiorite, granite, qtz-monzonite, and mafic microgranular enclave (MME) with composition of qtz-diorite to meladiorite, are focused in this paper. Microscopic study and data of microprobe analyses in host and enclave rocks...
متن کاملThe Middle Triassic Meiwu Batholith, West Qinling, Central China: Implications for the Evolution of Compositional Diversity in a Composite Batholith
An integrated study involving whole-rock and Sr–Nd–Hf isotope geochemistry and zircon geochronology and trace element combined with detailed field investigation was carried out for the composite Meiwu batholith in the West Qinling orogenic belt of central China to probe the origins of its compositional diversity and its emplacement history. The batholith is composed of quartz diorite, granodior...
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ژورنال
عنوان ژورنال: Mineralogy and Petrology
سال: 2014
ISSN: 0930-0708,1438-1168
DOI: 10.1007/s00710-014-0326-6