Results 191 to 200 of about 65,183 (333)

Near‐Synchronous Cambrian Evolution of the Transbrasiliano‐Kandi‐4°50′ Shear Zone in South America and Africa

Terra Nova, EarlyView.
ABSTRACT The Transbrasiliano‐Kandi‐4°50′ (TK4) shear zone in western Gondwana crosscuts South America and NW Africa for at least 6000 km. Despite its impressive size, the timing of the main episode of dextral ductile shearing is uncertain. We present detailed in situ multi‐mineral geochronology of mylonites from both Brazil and Algeria supporting that ...
F. A. Caxito, B. V. Ribeiro, F. Alkmim, A. Deramchi, C. L. Kirkland   +4 more
wiley   +1 more source

Petrology of potassic alkaline ultramafic and carbonatitic rocks from Planalto da Serra (Mato Grosso State), Brazil

Open Geosciences, 2014
Comin-Chiaramonti Piero, Gomes Celso, Min Angelo, Ruberti Excelso, Girardi Vicente, Slejko Francesca, Neder Renato, Pinho Francisco   +7 more
doaj   +1 more source

Petrographic and Molecular Characterization of Organic-Rich Mudstones with Petroleum Generative Potential from The Lower Triassic Montney Formation, Western Canada. [PDF]

ACS Omega
Becerra D, Stasiuk L, Clarkson CR, Carvajal-Ortiz H, Ghanizadeh A, Moslow T.   +5 more
europepmc   +1 more source

Phlogopite- and clinopyroxene-dominated fractional crystallization of an alkaline primitive melt: petrology and mineral chemistry of the Dariv Igneous Complex, Western Mongolia

Contributions to Mineralogy and Petrology, 2014
C. Bucholz, O. Jagoutz, M. Schmidt, Oyungerel Sambuu   +3 more
semanticscholar   +1 more source

Giant Porphyry Copper Deposits Caused by a Slab Jamming in the Mantle Transition Zone

Terra Nova, EarlyView.
ABSTRACT Two giant porphyry copper deposits in the Southern Central Andes formed during the Miocene–Pliocene transition when a bend in the subducting Juan de Fernández hotspot chain jammed in the mantle transition zone, causing mega‐scale slab‐kinking. This geometry implies mechanical resistance that caused East–West compression and eventually a thrust‐
Nipaporn Nakrong, Marnie Forster, Wim Spakman, Hielke Jelsma, Francois Gaboury, Gordon Lister   +5 more
wiley   +1 more source

Permian Mengkarang coal facies and environment, based on organic petrology study

, 2006
Nana Suwarna
openalex   +1 more source

The Petrology of the Igneous Rocks

Nature
R. Balk
semanticscholar   +1 more source

The lithospheric architecture of Africa: Seismic tomography, mantle petrology, and tectonic evolution

, 2009
G. Begg, W. Griffin, L. Natapov, S. O’Reilly, S. Grand, C. O'Neill, J. Hronsky, Y. P. Djomani, C. Swain, T. Deen, P. Bowden   +10 more
semanticscholar   +1 more source

Mineralogy and Petrology of Comet 81P/Wild 2 Nucleus Samples

Science, 2006
M. Zolensky, T. Zega, H. Yano, S. Wirick, A. Westphal, M. Weisberg, I. Weber, J. Warren, M. Velbel, A. Tsuchiyama, P. Tsou, A. Toppani, N. Tomioka, K. Tomeoka, N. Teslich, M. Taheri, J. Susini, R. Stroud, T. Stephan, F. Stadermann, C. Snead, S. Simon, A. Simionovici, T. See, F. Robert, F. Rietmeijer, W. Rao, M. Perronnet, D. Papanastassiou, K. Okudaira, K. Ohsumi, I. Ohnishi, K. Nakamura-messenger, Tomoki Nakamura, S. Mostefaoui, T. Mikouchi, A. Meibom, G. Matrajt, M. Marcus, H. Leroux, L. Lemelle, L. Le, A. Lanzirotti, F. Langenhorst, A. Krot, L. Keller, A. Kearsley, D. Joswiak, D. Jacob, H. Ishii, R. Harvey, K. Hagiya, L. Grossman, J. Grossman, G. Graham, M. Gounelle, P. Gillet, M. Genge, G. Flynn, T. Ferroir, S. Fallon, D. Ebel, Z. Dai, P. Cordier, B. Clark, M. Chi, A. Butterworth, D. Brownlee, J. Bridges, S. Brennan, A. Brearley, J. Bradley, P. Bleuet, P. Bland, R. Bastien   +74 more
semanticscholar   +1 more source

Long‐Term Storage of Meteoric Water in the Variscan Basement: Stable Isotope Constraints (δD–δ18O)

Terra Nova, EarlyView.
ABSTRACT F‐Ba‐Pb‐Zn (±Ag) deposits near the unconformity between the Armorican and Aquitaine basins formed by mixing surface waters and brines with fluid ascending from the basement. To better constrain the source of this fluid and the conditions of mixing, we analyzed the hydrogen (δDwater) and oxygen (δ18Owater) isotopic composition of water trapped ...
Loïc Bouat, Pierre Strzerzynski, Véronique Gardien   +2 more
wiley   +1 more source