Results 21 to 30 of about 32,561 (204)

Trace element and isotope constraints on crustal anatexis by upwelling mantle melts in the North Atlantic Igneous Province: an example form the Isle of Rum, NW Scotland [PDF]

, 2009
Sr and Nd isotope ratios, together with lithophile trace elements, have been measured in a representative set of igneous rocks and Lewisian gneisses from the Isle of Rum in order to unravel the petrogenesis of the felsic rocks that erupted in the early ...
Ellam, R.M., Emeleus, C.H., Hertogen, J., Meyer, R., Nicoll, G.R., Troll, V.R.   +5 more
core   +1 more source

Carbon release from Large Igneous Province magmas estimated from trace element-gas correlations

Volcanica, 2023
Large Igneous Provinces (LIPs) facilitate massive transfers of CO2 and other volatiles from the mantle to atmosphere, contributing to past global warming and environmental disruption.
Benjamin A Black, Alessandro Aiuppa
doaj   +1 more source

Mantle heterogeneity during the formation of the North Atlantic Igneous Province: Constraints from trace element and Sr-Nd-Os-O isotope systematics of Baffin Island picrites [PDF]

, 2004
Sr-Nd-Os-O isotope and major and trace element data from ~62 Ma picrites from Baffin Island constrain the composition of mantle sources sampled at the inception of North Atlantic Igneous Province (NAIP) magmatism.
Eiler, J., Francis, D., Frei, R., Kent, A. J. R., Stolper, E. M., Woodhead, J.   +5 more
core   +1 more source

KENGEDE MAFIC DYKE SWARM AND EXPANSION OF THE 1.50 Ga KUONAMKA LARGE IGNEOUS PROVINCE OF NORTHERN SIBERIA

Геодинамика и тектонофизика, 2023
Within the Anabar shield in the northern part of the Siberia, Late Precambrian mafic igneous units are widespread, which form dyke swarms of different ages of different trends. This paper presents new data on the composition, structure and U-Pb dating of
M. D. Tomshin, R. E. Ernst, U. Söderlund, A. V. Okrugin   +3 more
doaj   +1 more source

Application of palynological data to the chronology of the Palaeogene lava fields of the British Province: implications for magmatic stratigraphy [PDF]

, 1997
New high-precision ages, determined from palynomorph assemblages within intercalated sedimentary deposits, are presented for the Palaeogene lava fields (Skye, Mull and Antrim) of the British Province. These data reveal very rapid averaged eruption rates (
Bell, B.R., Jolley, D.W.
core   +1 more source

Massive methane fluxing from magma–sediment interaction in the end-Triassic Central Atlantic Magmatic Province

Nature Communications, 2021
Global climate changes triggered by massive output of greenhouse gases led to mass extinctions in Earth’s past. Here, the authors show that widespread release of methane at the time of the end-Triassic mass extinction was caused by interaction of a Large
Manfredo Capriolo, Andrea Marzoli, László E. Aradi, Michael R. Ackerson, Omar Bartoli, Sara Callegaro, Jacopo Dal Corso, Marcia Ernesto, Eleonora M. Gouvêa Vasconcellos, Angelo De Min, Robert J. Newton, Csaba Szabó   +11 more
doaj   +1 more source

Record of massive upwellings from the Pacific large low shear velocity province

Nature Communications, 2016
Large igneous provinces may record pulses mantle plume upwellings and their relationship with deep-rooted mantle sources. Madrigal et al. present a new petrological model of the Pacific Ocean Large Igneous Province finding that mantle plume pulses were ...
Pilar Madrigal, Esteban Gazel, Kennet E. Flores, Michael Bizimis, Brian Jicha   +4 more
doaj   +1 more source

Detrital-zircon geochronology and provenance of the Ocloyic synorogenic clastic wedge, and Ordovician accretion of the Argentine Precordillera terrane [PDF]

, 2015
The Precordillera terrane in northwestern Argentina is interpreted to be anexotic (Laurentian) continental fragment that was accreted to western Gondwanaduring the Ordovician. One prominent manifestation of the subductionand collision process is a Middle?
Astini, Ricardo Alfredo, McClelland, William C., Mueller, Paul A., Thomas, William A.   +3 more
core   +1 more source

The Cretaceous Normal Superchron: A Mini-Review of Its Discovery, Short Reversal Events, Paleointensity, Paleosecular Variations, Paleoenvironment, Volcanism, and Mechanism

Frontiers in Earth Science, 2022
The Cretaceous Normal Superchron (CNS) was first defined in the 1960s to explain the Cretaceous Quiet Zone in marine magnetic anomaly profiles, which includes no or fewer geomagnetic reversals.
Yutaka Yoshimura
doaj   +1 more source

Emplacement of inflated Pāhoehoe flows in the Naude’s Nek Pass, Lesotho remnant, Karoo continental flood basalt province: use of flow-lobe tumuli in understanding flood basalt emplacement [PDF]

, 2018
Physical volcanological features are presented for a 710-m-thick section, of the Naude’s Nek Pass, within the lower part of the Lesotho remnant of the Karoo Large Igneous Province.
A Saunders, AE Jay, Anne E. Jay, BE Lock, BL Waichel, CP Rajendran, F Goff, F Holzförster, F Jourdan, Frédéric Fluteau, GPL Walker, GPL Walker, GPL Walker, H Hachimi El, H Svensen, HB Mattsson, HC Sheth, JD Greenough, JE Beane, JS Marsh, JSV Zijl van, Julian S. Marsh, K Burke, KA Hon, KB Knight, KG Cox, KG Cox, LG Viereck, M McClintock, M McClintock, M Moulin, M Moulin, ME Hartley, MJ Rossi, MK Reichow, MRG Sayyed, NR Bondre, NR Bondre, P-SS Ross, PB Wignall, PB Wignall, R Ernst, RA Duncan, RA Duraiswami, RA Duraiswami, RA Duraiswami, RA Duraiswami, RMH Smith, S Self, S Self, SE Bryan, SR Passey, SS Deshmukh, SW Anderson, T Thordarson, VE Camp, Vincent Courtillot, W Rogan   +57 more
core   +5 more sources