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首页> 外文期刊>Journal of Asian earth sciences >The emplacement history of granitic intrusions into the upper crust: Forceful to passive emplacement of the early Miocene Solarya Pluton (NW Turkey) as a case study
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The emplacement history of granitic intrusions into the upper crust: Forceful to passive emplacement of the early Miocene Solarya Pluton (NW Turkey) as a case study

机译：花岗岩侵入上地壳的沉积历史：以中新世索拉亚·普鲁顿（土耳其西北部）为例，对被动侵入进行了有力的定位

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Post-collisional magmatism in western Anatolia produced several granitic bodies represented by shallow level intrusions. In this study, we present field, geochronology and geothermo-barometry results of the Solarya Pluton (SP, NW Turkey) in order to better understand its emplacement into the different levels of the crust. The SP consists of three main plutonic members showing different textural properties; the northern part of the plutonic body is represented by K-feldspar megacrystalline granodiorite (KFMG) with distinct porphyritic texture and southern part is made up of microgranite-granodiorite (MGG) displaying microgranular texture whereas haplogranite, which displays graphic/granophyric textures, is represented by a thin aureole between the SP and basement rocks.Field relations, petrography and geothermo-barometry studies combined with Ar-40/Ar-39 and U-Pb zircon dating results suggest that different members of the SP were emplaced into different levels of crust with different mechanisms. The KFMG (Ar-40/Ar-39 - 23.2 Ma, U-Pb - 21.8 Ma) began its emplacement forcefully in the relatively deeper levels in the crust (av. 1.65 kbar; av. 797 degrees C; 6.1 km depth). After this stage, MGG (Ar-40/Ar-39 22.6 Ma, U-Pb - 21.2 Ma) was passively emplaced into the shallow levels (av. 0.69 kbar; ay. 745 degrees C; 2.4 km depth) via cauldron subsidence and in the latter stages the sheet intrusive rocks (haplogranite Ar-40/Ar-39 - 21.6 Ma and hypabyssal association) were emplaced into the ring faults at 1.5 km depth. Forceful to passive emplacement of the SP into the upper crust occurred under Aegean extensional tectonics. Our study contributes to examination of the granite ascent and emplacement within other extensional provinces worldwide.
机译：安那托利亚西部碰撞后的岩浆作用产生了一些以浅层侵入为代表的花岗岩体。在这项研究中，我们介绍了Solarya Pluton（SP，西北土耳其）的野外，年代学和地热气压测量结果，以便更好地了解其在地壳不同层中的位置。 SP由三个主要的深部成员组成，这些成员显示出不同的纹理特性。岩体的北部由具有长斑状质感的钾长石超晶质花岗闪长岩（KFMG）代表，而南部则由具有微粒状质地的微花岗岩-闪长闪长岩（MGG）组成，而代表有图形/粒化质地的白云母场关系，岩石学和地热气压研究结合Ar-40 / Ar-39和U-Pb锆石测年结果表明，SP的不同成员位于不同的地壳中具有不同的机制。 KFMG（Ar-40 / Ar-39-23.2 Ma，U-Pb-21.8 Ma）在地壳中相对较深的位置（平均1.65 kbar；平均797摄氏度； 6.1公里的深度）上有力地开始了侵略。在此阶段之后，MGG（大锅）（Ar-40 / Ar-39 22.6 Ma，U-Pb-21.2 Ma）被大锅沉陷并被动地置于浅层（av。0.69 kbar; ay。745摄氏度; 2.4 km深度）中。在后面的阶段中，将片状侵入岩（白云母Ar-40 / Ar-39-21.6 Ma和海底联合）置于1.5 km深度的环状断层中。在爱琴海伸展构造作用下，强力到被动地将SP安置在上地壳中。我们的研究有助于检查全球其他延伸省份中的花岗岩上升和位置。

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