Results 61 to 70 of about 755 (173)
Triplite and wolframite from a greisen-bordered veinlet in Eurajoki, SW Finland [PDF]
Bulletin of the Geological Society of Finland, 1969 Triplite and wolframite are described from a greisen-bordered veinlet associated with the local varieties of the Laitila rapakivi granite massif. The chemical analysis, unit cell dimensions and specific gravity are given for these minerals, and in ...
I. Haapala, P. Ojanperä
doaj +1 more source
Rapakivi granite in St. Petersburg: architecture and mineralogical-petrografical observations [PDF]
, 2016 Rapakivi granites are a widely used in architectural ensembles of St. Petersburg. The history and examples of their application from 1760s are here reviewed.
Bulakh, Andrey G. +2 more
core +1 more source
, 1992 Early Proterozoic rapakivi intrusions in S Greenland occur as thick sheets which have ramp–flat geometry and were intruded along the median planes of active ductile extensional shear zones.
D. H. W. Hutton +3 more
core +1 more source
Age and Geochemical Characteristics of Nansu Rapakivi Granite in Jiaobei Uplift Belt, Qingdao
, 2022 LA-ICP-MS zircon U-Pb geochronology from Nansu large Rapakivi granite in the Jiaobei uplift belt shows the concordant age is 116.5±0.32Ma and the weighted average age is 116.7±0.89Ma, belonging to the late Yanshanian products of Early Cretaceous.
Xuewei, Li +4 more
core +1 more source
, 2007 The Rio Branco Rapakivi Batholith belongs to the Cachoeirinha Tectonic Domain, part of the Rio Negro-Juruena Geochronological Province located on the southwestern portion of the Amazonian Craton in Mato Grosso, Central Brasil.
Godoy, Antonio Misson [UNESP] +7 more
core +1 more source
Geochemical characterization of Gubanovskaya intrusion of rapakivi granites (Wiborg massif)
Vestnik MGTUThe paper presents new data on geology and composition of rapakivi granites of Gubanovskaya intrusion (Wiborg massif). Petrographic and geochemical characteristics of rapakivi granites of the second (ovoid) and third (trachytoid) phases of intrusion, as ...
Rogova I. V. +3 more
doaj +1 more source
Rapakivi texture in porphyritic dikes within the Karavanke granitic massif (Slovenia) [PDF]
Bulletin of the Geological Society of Finland, 2002 The northern Karavanke Granitic Massif straddles the Slovenian–Austrian border. The investigated area lies in northern Slovenia, and extends from the western Slovenian–Austrian border to the east for about 30 km, with a maximum width of 2 km.
M. Dobnikar, T. Dolenec, G. Bellieni
doaj +1 more source
Rapakivi Texture in the Mount Scott Granite, Wichita Mountains, Oklahoma
, 1996 Mount Scott Granite is the largest recognized A-type sheet granite of the Cambrian Wichita Igneous Province, southwestern Oklahoma. Despite surprising compositional uniformity over a substantial areal extent, Mount Scott Granite can be subdivided into ...
Gilbert, M. Charles +2 more
core +1 more source
Nature secondary quartzites of the island Bol’shoy Tyuters (Gulf of the Finland, Russia)
Литосфера, 2017 Territory Baltic shield is well understood and the identification of innovative geological formations rare stroke of luck. Thanks to the Russian Geographical Society in the summer of 2015 an integrated expedition to study the nature of the little-known ...
Evgenii N. Terekhov +5 more
doaj +1 more source
Rapakivi granites, S Greenland: hydrothermal alteration of igneous layering
, 1990 Igneous layering is developed in the Proterozoic rapakivi granite suite of South Greenland in an area on the south-easternmost coast of the island of Angnikitsoq. The layering at this locality is unusual in that it is defined by interstitial phases.
Harrison, TN +7 more
core +1 more source