Results 211 to 220 of about 123,575 (347)

Residence of REE, Y, Th and U in granites and crustal protoliths : implications for the chemistry of crustal melts

, 1996
F. Bea
semanticscholar   +1 more source

Confirmation of the impact origin of the Late Ordovician Tvären impact structure (southeast Sweden) and emplacement of impactites in a marine setting

Meteoritics &Planetary Science, EarlyView.
Abstract The Tvären structure in southeastern Sweden has been listed as a confirmed marine‐target impact structure for decades. However, to date, no measurements and/or indexed data of planar deformation features in quartz grains from the structure have been published or any other unequivocal evidence of impact.
Katarzyna J. Gajewska, Sanna Alwmark, Mikael Calner, Sylvain Richoz, Jens Ormö, Erik Sturkell, Carl Alwmark   +6 more
wiley   +1 more source

Structural controls on lithium mineralization in shear-zone hosted granitic pegmatites of the Zulu pegmatite field, Zimbabwe - implications for exploration. [PDF]

Miner Depos
Koopmans L, Gardiner NJ, St Pierre B, Palin RM, Musinga R, Robb LJ.   +5 more
europepmc   +1 more source

Polymict melt‐bearing breccia dikes in the Morokweng impact structure formed by slip‐induced mechanical mixing of pseudotachylite and cataclasite along large‐displacement impact faults

Meteoritics &Planetary Science, EarlyView.
Abstract A core drilled through shocked and faulted Archean granitoid gneisses and dolerites in the eroded peak ring of the 70–80 km diameter Morokweng impact structure intersects multiple centimeter‐ to meter‐wide clastic‐matrix breccias containing a polymict clast population of lithic and mineral clasts and altered, millimeter‐ to centimeter ‐size ...
Roger L. Gibson, S'lindile S. Wela, Leonidas C. Vonopartis, Marco A. G. Andreoli   +3 more
wiley   +1 more source

Melt reactions and timescales of melting in pelitic rocks-a case study from the Garhwal Himalaya. [PDF]

Contrib Mineral Petrol
Oldman CJ, Warren CJ, Harris NBW, Kunz BE, Spencer CJ, Argles TW, Roberts NMW, Hammond SJ, Degli-Alessandrini G.   +8 more
europepmc   +1 more source

Geophysical investigation of the Santa Marta impact structure—Piauí State, Brazil

Meteoritics &Planetary Science, EarlyView.
Abstract The Santa Marta impact structure in northeastern Brazil, recognized as a partially preserved complex crater, was investigated through an integrated geophysical study employing magnetotelluric (MT) and gravity methods. Our research provides constraints on the crater's subsurface architecture.
Elienara Vasconcelos, João De Oliveira, Marcos Vasconcelos, Martyn Unsworth, Andrea Santos‐Matos, Florivaldo Sena   +5 more
wiley   +1 more source

Apatite saturation revisited: new model formulations and applications to igneous rocks. [PDF]

Contrib Mineral Petrol
Klein BZ, Müntener O, Gillespie J, Marxer F.   +3 more
europepmc   +1 more source

Granites and granite caves in the Western Carpathians

, 2008
Gaál, l., Bella, P.
openaire   +1 more source

GRANITE

Reports of the Technical Conference of the Institute of Image Electronics Engineers of Japan, 2004
NAKAMURA, Naotaka, UESONO, Takahiro, NAGAE, Takanori   +2 more
openaire   +1 more source

Araguainha Dome, Brazil: A polygonal impact structure due to a complex pre‐impact regional structural framework

Meteoritics &Planetary Science, EarlyView.
Abstract We investigated the structural framework of the north–northwestern Paraná Basin in Brazil to test whether the pre‐impact structures in this region may have had any influence on the first‐order formation and morphostructure of the Araguainha impact structure (AIS).
Renato B. Bernardes, Wolf U. Reimold, Roger L. Gibson, Julia B. Curto Ma, Adolfo B. Silva, Natalia Hauser   +5 more
wiley   +1 more source