Results 81 to 90 of about 23,492 (308)

Petroleum geology: science and practice in the 21st century. New ideas and paradigms

Известия Томского политехнического университета: Инжиниринг георесурсов, 2017
The current importance of the paper is determined by the vital necessity that research and practical efforts should be now focused on studying and controlling the oilfield «life», based on conceptually new ideas and methods in petroleum geology.
Nikolay Petrovich Zapivalov
doaj   +2 more sources

Petrogenetic evidences in geodynamics and placement of Nordoz intrusive masses in Alborz-Azerbaijan structural zone

Journal of Economic Geology
The Oligocene Nordoz intrusive complex is located in the eastern region of Siehroud, within the East Azerbaijan province, and within the Alborz-Azerbaijan structural zone.
Shahryar Mahmoudi , Shiva Lavi, Shohreh Hassanpour, Amir Ali Tabakh Shabani , Mehran Yegane Far   +4 more
doaj   +1 more source

Apatite: A Fingerprint for Metasomatic Processes

Elements, 2015
Apatite is a superb mineral by which to investigate the nature of fluids that have passed through and altered a rock (metasomatic processes). Its ubiquity allows it to act as a reservoir for P, F, Cl, OH, CO2, and the rare earth elements. It is also a powerful thermochronometer and can be chemically altered by aqueous brines (NaCl–KCl–CaCl2–H2O), pure ...
openaire   +5 more sources

External Metasomatism associated with Serpentine [PDF]

Nature, 1954
AFTER finding in Turkey that many geosynclinal serpentines appear to be submarine lava flows1, we re-examined in Ayrshire the only known exposure of an actual contact between the Ballantrae serpentine and associated spilites. The evidence is difficult to disentangle, but it proved beyond doubt that the serpentine is earner than the particular spilite ...
W. J. McCALLIEN, E. B. Bailey
openaire   +2 more sources

Multiple mantle metasomatism beneath the Leizhou Peninsula, South China: evidence from elemental and Sr-Nd-Pb-Hf isotope geochemistry of the late Cenozoic volcanic rocks

Soviet Economy, 2018
We analysed whole-rock major and trace elements and Sr-Nd-Pb-Hf isotopes of the late Cenozoic volcanic rocks in the Leizhou Peninsula, South China to investigate their mantle source characteristics. These volcanic rocks, collected from Jiujiang, Tianyang
Pu Sun, Y. Niu, P. Guo, Shuo Chen, Meng Duan, Hongmei Gong, Xiaohong Wang, Yuanyuan Xiao   +7 more
semanticscholar   +1 more source

Uranium Addition and Loss in Serpentinites: The Potential Role of Iron Oxides

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 9, September 2025.
Abstract Fluid‐mobile uranium serves as a tracer for water‐rock alteration in serpentinized mantle rocks, which constitute an important uranium reservoir. However, the mechanism for uranium addition, where uranium is hosted, and the stability of the uranium enriched material during subduction is not settled.
Emily H. G. Cooperdock, Juan Carlos de Obeso, Frank J. Pavia   +2 more
wiley   +1 more source

Geochemistry and Geochronology of A‐Type Intermediate‐Felsic Rocks in NW Himalaya, Pakistan: Implications for Petrogenesis and Tectonic Evolution of Northern Gondwana

Geochemistry, Geophysics, Geosystems
Igneous intrusives in northern Pakistan can provide valuable insights into pre‐Himalayan metaluminous to peraluminous magmatism along the northern boundary of the supercontinent Gondwana and its potential tectonic significance.
Musa Khan, Huan Li, Thomas J. Algeo, Asad Khan, Michael W. Förster, Zaheen Ullah   +5 more
doaj   +1 more source

Fenites associated with carbonatite complexes : a review [PDF]

, 2017
This is the author accepted manuscript. The final version is available from Elsevier via the DOI in this record.Carbonatites and alkaline-silicate rocks are the most important sources of rare earth elements (REE) and niobium (Nb), both of which are ...
A.A. Finch, A.R. Chakhmouradian, Afanasyev, Al Ani, Al Ani, Andersen, Andersen, Andersen, Appleyard, Arzamastev, Arzamastsev, Bailey, Bardina, Bazhenov, Bazhenov, Becke, Bodeving, Borst, Bowden, Brady, British Geological Survey, Broom-Fendley, Brögger, Burnham, Burnham, Bussell, Bühn, Bühn, Bühn, Carmichael, Cartwright, Castor, Chakhmouradian, Chakhmouradian, Chakhmouradian, Clarke, Cooper, Currie, Dahlgren, Deans, Dominy, Doroshkevich, Dowman, Drüppel, E. Deady, E. Dowman, Elliott, Engell, Es’kova, Evdokimov, F. Wall, Ferguson, Fettes, Finch, Fitton, Garson, Garson, Giehl, Giehl, Goodenough, Gorstka, Grant, Graser, Gresens, Gupta, H.A.L. Elliott, Haas, Haggerty, Harlov, Harlov, Harmer, Harmer, Hedenquist, Heinrich, Heinrich, Heinrich, Hogarth, Hogarth, Hogarth, Hornig-Kjarsgaard, Jackson, Johnson, Jones, Kelemen, Khamrabayev, King, Kjarsgaard, Kogarko, Kogarko, Konnerup-Madsen, Korzhinskii, Kovalenko, Kozlov, Kramm, Kramm, Kramm, Kresten, Kresten, Kruger, Krumrei, Kusebauch, Kwak, Le Bas, Le Bas, Le Bas, Le Bas, Le Maitre, Leake, Leake, Lee, Linnen, M.A.W. Marks, Mariano, Marien, Markl, Markl, Marks, Marks, Marks, Martin, McKie, Meinert, Meinert, Migdisov, Mikhailova, Misra, Mitchell, Moore, Morogan, Morogan, Morogan, Morogan, Nedosekova, Newton, Ngwenya, Notholt, Nurlybaev, Ortoleva, O’Brien, P.R. Siegfried, Palmer, Pfaff, Pirajno, Pirajno, Platt, Prokopyev, Putnis, Ray, Reid, Robb, Robins, Rosatelli, Rubie, Rubie, S. Dahlgren, S. Weatherley, Sachau, Samson, Sarapää, Schilling, Sillitoe, Sindern, Skelton, Smith, Stemprok, Sutherland, Sutherland, Sutherland, Swinden, Sæther, Thompson, Tilley, Timofeev, Traversa, Treiman, Tsay, Tuttle, Ugryumov, Vartiainen, Verschure, Verwoerd, Viladkar, Viladkar, Viladkar, von Eckermann, Wall, Wall, Williams-Jones, Williams-Jones, Wimmenauer, Winter, Wood, Woolley, Woolley, Woolley, Woolley, Woolley, Woolley, Woolley, Woolley, Xie, Xu, Zaraiskii, Zharikov   +203 more
core   +6 more sources

Raising the Roof of the World: Intra‐Crustal Asian Mantle Supports the Himalayan‐Tibetan Orogen

Tectonics, Volume 44, Issue 9, September 2025.
Abstract The Himalayan‐Tibetan orogen formed via the ongoing collision of India and Asia. Its colossal elevations stem from buoyant crustal roots that doubled in thickness during continental collision, widely believed to result from Indian crust under‐thrusting its Asian counterpart and Asian crustal thickening. However, a single crustal layer of up to
P. Sternai, S. Pilia, S. Ghelichkhan, P. Bouilhol, A. Menant, D. R. Davies, L. Ostorero, B. Vaes, R. Esposito, E. Garzanti, S. Cloetingh, T. Gerya   +11 more
wiley   +1 more source

Potassium metasomatism of volcanic and sedimentary rocks in rift basins, calderas and detachment terranes [PDF]

The chemical, mineralogical, and oxygen-isotopic changes accompanying K-metasomatism are described. The similarities with diagenetic reactions in both deep marine and alkaline, saline-lake environments are noted.
Chapin, C. E., drographic basins.
core   +1 more source