Results 51 to 60 of about 32,561 (204)

Lithospheric controls on melt production during continental breakup at slow rates of extension: Application to the North Atlantic

, 2009
Rifted margins form from extension and breakup of the continentallithosphere. If this extension is coeval with a region of hotter lithosphere,then it is generally assumed that a volcanic margin would follow.
Armitage, J.J., Henstock, T.J., Hopper, J.R., Minshull, T.A.   +3 more
core   +1 more source

When do we need pan-global freeze to explain ^(18)O-depleted zircons and rocks? [PDF]

, 2011
Rocks with δ^(18)O values of less than 5‰ SMOW (Standard Mean Ocean Water) contain oxygen derived from ∼0‰ seawater or meteoric (rain or melted snow,
Bindeman, Ilya
core   +1 more source

Frontier exploration and the North Atlantic Igneous Province : new insights from a 2.6 km offshore volcanic sequence in the NE Faroe–Shetland Basin [PDF]

, 2017
Acknowledgements and Funding This work was funded by Chevron. The authors would like to acknowledge the Chevron West of Shetlands team along with the Joint Venture partners OMV, Faroe Petroleum and Indemitsu for access to data along with permission to ...
Campbell, E., Hole, M. J., Jolley, D. W., Millett, J. M., Schofield, N.   +4 more
core   +2 more sources

Linking Siberian Traps LIP Emplacement and End-Permian Mass Extinction: Evidence from Magnetic Stratigraphy of the Maymecha-Kotuy Volcanic Section

Geosciences, 2020
The Siberian Traps Large Igneous Provinces (LIP) emplacement is considered as one of possible triggers for the end-Permian global biotic crisis. However, relative timing of the onset of extinction and the main phase of the magmatic activity are not yet ...
Anton V. Latyshev, Anna M. Fetisova, Roman V. Veselovskiy   +2 more
doaj   +1 more source

From Continent to Ocean: Investigating the Multi-Element and Precious Metal Geochemistry of the Paraná-Etendeka Large Igneous Province Using Machine Learning Tools

Earth Science, Systems and Society, 2021
Large Igneous Provinces, and by extension the mantle plumes that generate them, are frequently associated with platinum-group element (PGE) ore deposits, yet the processes controlling the metal budget in plume-derived magmas remains debated.
J. J. Lindsay, H. S. R. Hughes, C. M. Yeomans, J. C. Ø. Andersen, I. McDonald   +4 more
doaj   +1 more source

Extremely high He isotope ratios in MORB-source mantle from the proto-Iceland plume [PDF]

, 2003
The high ³He/⁴He ratio of volcanic rocks thought to be derived from mantle plumes is taken as evidence for the existence of a mantle reservoir that has remained largely undegassed since the Earth's accretion.
AD Saunders, AK Pedersen, B Marty, B Marty, BB Hanan, BS Hardarson, D Anderson, D Francis, D Porcelli, D Porcelli, DJ DePaolo, DM McKenzie, DR Hilton, DR Hilton, DW Graham, EH Hauri, ET Dixon, Finlay M. Stuart, FM Stuart, FM Stuart, I Robillard, J. Godfrey Fitton, JG Fitton, JG Fitton, JM Eiler, M Honda, MD Kurz, MD Kurz, MJ Whitehouse, RD van der Hilst, Robert M. Ellam, Solveigh Lass-Evans, T Prestvik, V Olive   +33 more
core   +2 more sources

Large igneous provinces studied

Eos, Transactions American Geophysical Union, 1992
Episodic magmatism has resulted in the emplacement of large igneous provinces (LIPs), including continental flood basalts and associated intrusives, volcanic/intrusive passive margins, oceanic plateaus, submarine ridges, ocean basin flood basalts, and seamount chains (Figure 1).
openaire   +1 more source

Revised definition of Large Igneous Provinces (LIPs) [PDF]

Earth-Science Reviews, 2008
Abstract Much has been learned about Large Igneous Provinces (LIPs) and their database greatly expanded since their first formal categorization in the early 1990s. This progress provides an opportunity to review the key characteristics that distinguish LIP events from other melting events of the upper mantle, and to reassess and revise how we define ...
Bryan, Scott, Ernst, Richard
openaire   +2 more sources

U-Pb SHRIMP zircon dating of Grenvillian metamorphism in Western Sierras Pampeanas (Argentina) : correlation with the Arequipa-Antofalla craton and constraints on the extent of the Precordillera Terrane [PDF]

, 2006
The Sierras Pampeanas of Argentina, the largest outcrop of pre-Andean crystalline basement in southern South America, resulted from plate interactions along the proto-Andean margin of Gondwana, from as early as Mesoproterozoic to Late Paleozoic times (e ...
C. Mark Fanning, Carlos W. Rapela, Carmen Galindo, Casquet, Casquet, Cesar Casquet, Corrievau, Damm, Edgardo Baldo, Galindo, Jose M. González-Casado, Juan A. Dahlquist, Kretz, Loewy, Martignole, McDonough, Pankhurst, Porcher, Powell, Ramos, Ramos, Ramos, Rapela, Rapela, Rivers, Robert J. Pankhurst, Thomas, Tosdal, Varela, Vavra, Vujovich, Wasteneys   +31 more
core   +4 more sources

Mantle Plume‐Lithosphere Interactions Beneath the Emeishan Large Igneous Province

Geophysical Research Letters
The formation of large igneous provinces (LIPs) has been widely believed to be linked to mantle plume activity. However, how the plume modifies the overlying lithosphere, particularly its compositional structure, remains uncertain.
Anqi Zhang, Zhen Guo, Juan Carlos Afonso, J. Gregory Shellnutt, Yingjie Yang   +4 more
doaj   +1 more source