Results 81 to 90 of about 755 (173)

Using Laser Ablation ICP-MS to Constrain the Origin of the Rapakivi Texture of the Deer Isle Pluton, Maine

, 2008
An Ovoid K-feldspar mantled by Na-feldspar is called rapakivi. Rapakivi may form either by (1) decompression during ascent of felsic magma through the crust to a shallow magma chamber or by (2) mixing of mafic- and felsic-magma within a magma chamber. We
Kaiser, Jason F.
core  

The diverse mesoscopic structures in rapakivi granites of Southeastern Finland : episyenites and related processes [PDF]

, 2020
Peralkaline syenites and granites form a small yet significant group of rocks within the A-type granite association worldwide. Although the Mid-Proterozoic Finnish rapakivi (A-type) granite complexes are voluminous in southern Finland, they only host ...
Suikkanen, Einari
core  

Microorganisms in Superficial Deposits on the Stone Monuments in Saint Petersburg. [PDF]

Microorganisms, 2022
Sazanova KV, Zelenskaya MS, Vlasov AD, Bobir SY, Yakkonen KL, Vlasov DY.   +5 more
europepmc   +1 more source

Radiological Hazard Evaluation of Some Egyptian Magmatic Rocks Used as Ornamental Stone: Petrography and Natural Radioactivity. [PDF]

Materials (Basel), 2021
Lasheen ESR, Rashwan MA, Osman H, Alamri S, Khandaker MU, Hanfi MY.   +5 more
europepmc   +1 more source

Active anaerobic methane oxidation and sulfur disproportionation in the deep terrestrial subsurface. [PDF]

ISME J, 2022
Bell E, Lamminmäki T, Alneberg J, Qian C, Xiong W, Hettich RL, Frutschi M, Bernier-Latmani R.   +7 more
europepmc   +1 more source

Rio Branco rapakivi batholith magmatism, Southwestern of Amazonian Craton - MT

, 2011
Rio Branco Rapakivi Batholith is located on the southwestern portion of the Amazonian Craton in Mato Grosso and belongs to the Cachoeirinha Tectonic Domain, part of the Rio Negro-Juruena Geochronological Province, Central Brasil.
de Araújo, Larissa Marques Barbosa, Godoy, Antonio Misson [UNESP]   +1 more
core  

Petrology, age, and tectonic setting of the rapakivi-bearing Margaree pluton, Cape Breton Island, Canada: evidence for a Late Devonian posttectonic cryptic silicic-mafic magma chamber

, 2020
The Margaree pluton extends for >40 km along the axis of the Ganderian Aspy terrane of northern Cape Breton Island, Nova Scotia. The pluton consists mainly of coarse-grained megacrystic syenogranite, intruded by small bodies of medium-grained ...
White, Chris E, van Rooyen, Deanne, Barr, Sandra M., Sombini dos Santos, Gabriel   +3 more
core   +1 more source

Mesoproterozoic Strike-Slip Faulting within the Åland Rapakivi Batholith, Southwestern Finland

Tektonika
Paleostress inversion analysis of outcrop data from brittle fault structures within the Mesoproterozoic 1.58 Ga Åland rapakivi granite, southwestern Finland, revealed two separate strike-slip faulting stages. Stage 1 is dominated by dextral slip along E–
Nicklas Nordbäck, Pietari Skyttä, Jon Engström, Nikolas Ovaskainen, Jussi Mattila, Ismo Aaltonen   +5 more
doaj   +1 more source

The Vehmaa rapakivi granite batholith - An assemblage of successive intrusions indicating a piston-type collapsing centre [PDF]

Bulletin of the Geological Society of Finland, 2005
O. Selonen, C. Ehlers, H. Luodes, J. Lerssi   +3 more
doaj   +1 more source

Long-lived Paleoproterozoic eclogitic lower crust. [PDF]

Nat Commun, 2021
Buntin S, Artemieva IM, Malehmir A, Thybo H, Malinowski M, Högdahl K, Janik T, Buske S.   +7 more
europepmc   +1 more source