Geophysical Research Letters, Volume 51, Issue 13, 16 July 2024.Abstract Continental alkaline magmatism has been suggested to play a significant role in releasing deep mantle carbon into the atmosphere, which can greatly impact the global climate. However, the temporal variations of alkaline magmatism and their potential to modulate climate over geologic time remain poorly constrained. The detrital zircon record is
Lu Wang +10 more
wiley +1 more source
Constituent mineral and minor element compositions of alkali ~ highly potassic mafic dykes intruded into Lützow-Holm Complex, East Antarctica, for consideration of their origin. [PDF]
, 2016 第3回極域科学シンポジウム/第32回極域地学シンポジウム 11月30日（金） 国立極地研究所 ...
Miyamoto Tomoharu, 宮本 知治
core +1 more source
Sequence of crystallisation of pegmatites: the Angola case [PDF]
, 2016 The Precambrian basement of Angola contains several pegmatite fields, although most of them have not been studied yet. Some of them include pegmatites devoid of rare elements, as those found close to Caxito, about 100 km ENE Luanda.
Alfonso Abella, María Pura +2 more
core
Turbidity in alkali feldspars from granitic pegmatites
, 1994 Alkali feldspars from pegmatite of Brazil and Spain have microscopic to submicroscopic inclusions giving a >turbid> and >clouded> appearance. Inclusions are isotropic, irregular and spatially associated with patch/vein lamellae in network and/Or isolated masses. Inclusions have no detectable lines in XRD and microprobe analyses show strong variability:
Sánchez Muñoz, Luis +5 more
openaire +1 more source
An Improved Method for Obtaining Small Pressed Powder Pellets for the Analysis by XRF [PDF]
, 2002 A rapid, very low cost of instrumentation and simple approach to specimen preparation for the analysis by X-ray fluorescence spectrometry is presented. This technique requires a few mg of powdered samples, which are compressed to produce pellets.
D`angelo, José Alejandro +3 more
core
Discriminating fluid source regions in orogenic gold deposits using B-isotopes [PDF]
, 2016 The genesis of orogenic gold deposits is commonly linked to hydrothermal ore fluids derived from metamorphic devolatilization reactions. However, there is considerable debate as to the ultimate source of these fluids and the metals they transport ...
Lambert-Smith, James +3 more
core +1 more source
Mineralogy of pegmatite with giant epidote crystals, near Chanishte, Macedonia [PDF]
, 2001 Giant epidote crystals up to 2m long have a formula and unit cell parameters.Epidote is in association with albite, microc1ine (amazonite variety), muscovite, garnet, titanite and zircon.
Bermanec, Vladimir +5 more
core
The Cnoc nan Cuilean area of the Ben Loyal igneous complex [PDF]
, 1945 The Ben Loyal igneous complex forms a group of mountains, situated about six miles to the south of Tongue in northern Sutherland. The three plutonic masses of the complex are (a) The Ben Loyal range, (b) Cnoc nan Cuilean, and (c) Beinn Stumanadh.
King, Basil Charles
core +2 more sources
Occurrence and compositions of post-metamorphic alkali ~ highly potassic mafic dykes intruded into metamorphic rocks on Lützow-Holm Complex, East Antarctica ~ a relation between chemical composition of post-metamorphic igneous activity and degree of crustal maturing in the LHC~ [PDF]
, 2016 第4回極域科学シンポジウム個別セッション：[OG] 地圏11月14日（木）〜11月15日（金） 国立極地研究所 ３階 ...
D.J. Dunkley +3 more
core +1 more source
Effect of mineralogical variations on physico-mechanical and thermal properties of granitic rocks. [PDF]
Sci Rep, 2023 Lasheen ESR, Rashwan MA, Azer MK.
europepmc +1 more source