Melt reactions and timescales of melting in pelitic rocks-a case study from the Garhwal Himalaya [0.03%]
片岩熔融的熔融反应和熔融时间尺度——来自喜马拉雅加尔瓦尔地区的案例研究
C J Oldman,C J Warren,N B W Harris et al.
C J Oldman et al.
The nature, location, longevity and pressure-temperature conditions of different crustal melt reactions during orogenesis provide constraints on the structure, mechanical strength and exhumation of orogenic middle crust as well as element m...
Coupling antigorite deformation and dehydration in high-pressure experiments [0.03%]
高压实验中抗滑石变形与脱水的耦合机制研究
Lisa Eberhard,Mattia Luca Mazzucchelli,Stefan Markus Schmalholz et al.
Lisa Eberhard et al.
The dehydration of antigorite is an important reaction in subduction zones with implications on both geochemical and geophysical processes. In this experimental study we focus on the onset of antigorite dehydration and investigate various c...
Cooling rates and melt extraction timescales determined by diffusion chronometry on shallow crustal plutonic rocks [0.03%]
浅地壳 plutonic 岩石的冷却速率和熔体萃取时间尺度的扩散定时法确定
Thomas Grocolas,Othmar Müntener,Elias M Bloch et al.
Thomas Grocolas et al.
Diffusion chronometry has emerged as a valuable tool to track the timescales of magmatic processes and is now routinely applied on erupted volcanic products to infer crystal residence times and mixing-to-eruption timescales. Despite some at...
Sabastien C Dyer,Ivan Edgeworth,Brian Kendall et al.
Sabastien C Dyer et al.
Metamorphic zircon is commonly assumed to record growth during prograde or peak metamorphic conditions. However, numerical models of zircon predict growth during cooling. Linking the relative timing of zircon growth to a metamorphic evoluti...
Controls of focused fluid release in subduction zones: insights from experimental dehydration of brucite vein networks in serpentinite [0.03%]
俯冲带富集流体释放的控制：蛇纹岩中纤绿翠石脉网络脱水实验的启示
Manuel D Menzel,Lisa Eberhard,Austin Arias et al.
Manuel D Menzel et al.
Aqueous fluids released by metamorphic dehydration of serpentinites are a key component for seismicity, creep, and geochemical cycling in subduction zones. How these fluids drain and migrate towards the mantle wedge has yet to be fully unde...
Coherent solvus of disordered alkali feldspar: experiment, atom probe tomography and thermodynamic model [0.03%]
无序斜长石的相干溶解度：实验、原子探针层析和热力学模型
D Heuser,R Dubosq,E Petrishcheva et al.
D Heuser et al.
At temperatures above about 600 °C, alkali feldspar forms a continuous solid solution between the Na and K end members. Towards lower temperatures a miscibility gap opens, and alkali feldspar of intermediate composition exsolves, forming a...
Edgar Dachs,Artur Benisek
Edgar Dachs
A new activity model for biotite is formulated in the system K2O-FeO-MgO-Al2O3-SiO2-H2O-TiO2-O2 (KFMASHTO), which extends that for the KFMASH system by introducing a titanium-biotite and a ferric-biotite end-member (tbio: K(TiMg2)[(O)2(AlSi...
Coherent lamellar intergrowth in alkali feldspar [0.03%]
碱长石中的层状干涉纹estrutura coerente lamelar em feldspato alcalino
E Petrishcheva,D Heuser,R Abart
E Petrishcheva
A thermodynamic analysis of coherent lamellar intergrowth resulting from the exsolution of initially homogeneous alkali feldspar is presented. In contrast to earlier treatments, where the simplifying assumption of zero strain in the lamella...
Variations in orientation relationships between rutile inclusions and garnet host relate to magmatic growth zoning [0.03%]
金红石包体与石榴子岩主矿物间的取向关系变化反映了岩浆生长分带性
Victoria Kohn,Thomas A Griffiths,Taisia Alifirova et al.
Victoria Kohn et al.
Rutile inclusions in almandine-spessartine garnet from a peraluminous pegmatoid from the Moldanubian zone (Bohemian Massif, AT) show distinct changes in aspect ratio, shape preferred orientations (SPO) and crystallographic orientation relat...
On the origin of alkali feldspar megacrysts in granitoids. Part 2: evidence for nucleation and growth under magmatic conditions from crystal size distributions of the Cathedral Peak Granodiorite, California, USA [0.03%]
花岗岩中碱长石巨晶的起源. 第二期：美国加州Cathedral Peak花岗伟晶岩相中榍石大小分布对熔体条件下异质形核和生长作用证据的研究
Susanne Seitz,Guilherme A R Gualda,Lydia J Harmon
Susanne Seitz
The mechanisms whereby alkali feldspar megacrysts form have been debated for several decades; yet, we do not understand well the processes that lead to their formation. We take advantage of glacially polished outcrop surfaces from the Cathe...