✦ LIBER ✦

Evidence for the role of phlogopite in the genesis of alkali basalts

✍ Scribed by Martin F. J. Flower

Publisher: Springer
Year: 1971
Tongue: English
Weight: 652 KB
Volume: 32
Category: Article
ISSN: 0010-7999
DOI: 10.1007/bf00383055

No coin nor oath required. For personal study only.

✦ Synopsis

Evaluation of available experimental and petrochemical evidence suggests that variations of potassium, titanium and aluminium in basalts can be explained by the melting of titaniferous phlogopite at depths exceeding about 60 km in the upper mantle. For tholeiitie basalts, an inverse covariance is reeognised between titanium and aluminium which is probably controlled by the depth of magma segregation. The relative effects of pressure and phlogopite breakdown have been estimated for selected suites of alkali basalt.

📜 SIMILAR VOLUMES

Rare earth elements in metagabbros from

Rare earth elements in metagabbros from the Mid-Atlantic Ridge and their possible implications for the genesis of alkali olivine basalts as well as the lizard peridotite

✍ Akimasa Masuda; Noboru Nakamura; Tsuyoshi Tanaka 📂 Article 📅 1971 🏛 Springer 🌐 English ⚖ 737 KB

Role of fractional crystallization in th

Role of fractional crystallization in the descent: Basalt → trachyte

✍ Amalbikash Mukherjee 📂 Article 📅 1967 🏛 Springer 🌐 English ⚖ 720 KB

The role of fractional crystallization in the descent: basalt--> trachyte is critically examined. For each "simple basalt" magma type --alkaline, critically undersaturated, and oversaturated --there is a possible trachyte derived by way of fractional crystallization. Olivine removal is the main phys

Role of dyslipoproteinemia in the genesi

Role of dyslipoproteinemia in the genesis of chronic hepatitis

✍ E. D. Klimenko; O. M. Pozdnyakov 📂 Article 📅 1992 🏛 Springer US 🌐 English ⚖ 221 KB

The role of CO2in the genesis of olivine

The role of CO2in the genesis of olivine melilitite

✍ Gerhard Brey; David H. Green 📂 Article 📅 1975 🏛 Springer 🌐 English ⚖ 655 KB

The nature of the near-liquidus phases for a mantle-derived olivine melilitite composition have been determined at high pressure under dry conditions and with various water contents. Olivine and clinopyroxene occur on or near the liquidus and there are no conditions where orthopyroxene crystallizes

Phase relations in the phlogopite-apatit

Phase relations in the phlogopite-apatite system at 20 kbar; implications for the role of fluorine in mantle melting

✍ D. Vukadinovic; A. D. Edgar 📂 Article 📅 1993 🏛 Springer 🌐 English ⚖ 718 KB

The origin of fassaitic augite in the al

The origin of fassaitic augite in the alkali basalt suite of the Hocheifel area, Western Germany

✍ H. G. Huckenholz 📂 Article 📅 1973 🏛 Springer 🌐 English ⚖ 723 KB

Fassaitic augite (augite 3) occurs in elinopyroxenite fragments with cumulus textures or as anhedral crystals in alkali basalts and nepheline basanites of the Hocheifel Area. Rimming of augite 3 by phenocrystic augite (augite 2) followed by groundmass augite (augite 4) defines the sequence of the cl