Results 91 to 100 of about 32,561 (204)

Reduced plate motion controlled timing of Early Jurassic Karoo-Ferrar large igneous province volcanism. [PDF]

Sci Adv, 2022
Ruhl M, Hesselbo SP, Jenkyns HC, Xu W, Silva RL, Matthews KJ, Mather TA, Mac Niocaill C, Riding JB.   +8 more
europepmc   +1 more source

Magmatic systems of large continental igneous provinces

Geoscience Frontiers, 2017
AbstractLarge igneous provinces (LIPs) formed by mantle superplume events have irreversibly changed their composition in the geological evolution of the Earth from high-Mg melts (during Archean and early Paleoproterozoic) to Phanerozoic-type geochemically enriched Fe-Ti basalts and picrites at 2.3 Ga.
Sharkov, E., Bogina, M., Chistyakov, A.
openaire   +1 more source

The Geologic Features of the Occurrence of Copper in North America [PDF]

, 1933
Copper is of such widespread natural occurrence in North America and there are so few metal-mining districts that have not contributed to its production that it is obviously necessary in any brief general treatment of the geology of the copper deposits ...
Ransome, F. L.
core  

Assessing the importance of thermogenic degassing from the Karoo Large Igneous Province (LIP) in driving Toarcian carbon cycle perturbations. [PDF]

Nat Commun, 2021
Heimdal TH, Goddéris Y, Jones MT, Svensen HH.   +3 more
europepmc   +1 more source

Large Igneous Province Sulfur Emissions Have Long‐Term (>1000 Years) Effects on the Ocean Carbon Cycle

Geochemistry, Geophysics, Geosystems
Large Igneous Province (LIP) eruptions are thought to have driven environmental and climate change over wide temporal scales ranging from a few to thousands of years.
Hee Jun Cheong, Tushar Mittal, Courtney Jean Sprain, Isabel M. Fendley   +3 more
doaj   +1 more source

The geology and geophysics of the Oslo rift [PDF]

The regional geology and geophysical characteristics of the Oslo graben are reviewed. The graben is part of a Permian age failed continental rift. Alkali olivine, tholefitic, and monzonitic intrusives as well as basaltic lavas outline the extent of the ...
Ruder, M. E.
core   +1 more source

Siberian flood basalt magmatism and Mongolia-Okhotsk slab dehydration [PDF]

, 2008
Experimental data combined with numerical calculations suggest that fast subducting slabs are cold enough to carry into the deep mantle a significant portion of the water in antigorite, which transforms with increasing depth to phase A and then to phase ...
Alexei V. Ivanov, Konstantin D. Litasov
core   +1 more source

Geology of the Tehachapi Mountains, California [PDF]

, 1954
The San Joaquin-Sacramento Valley, also known as the Great Valley of California, separates the Coast Ranges on the west from the Sierra Nevada on the east. The southern part of this major physiographic and structural province is about 50 miles in average
Buwalda, John P.
core  

A Review of the Spatiotemporal Evolution of the High Arctic Large Igneous Province, and a New U‐Pb Age of a Mafic Sill Complex on Svalbard

Geochemistry, Geophysics, Geosystems
The High Arctic Large Igneous Province (HALIP) formed in the circum‐Arctic during the Cretaceous. The timing and duration of emplacement of these mafic magmas are important for understanding the climatic and environmental effects, yet many uncertainties ...
A. M. R. Sartell, U. Söderlund, K. Senger, H. J. Kjøll, O. Galland   +4 more
doaj   +1 more source

Large igneous province activity drives oceanic anoxic event 2 environmental change across eastern Asia

Communications Earth & Environment
During mid-Cretaceous Oceanic Anoxic Event 2, significant increase of atmospheric carbon dioxide concentrations from the eruption of the large igneous provinces is hypothesized to have induced a humid climate and an elevation in nutrient runoff from ...
R. Takashima, D. Selby, T. Yamanaka, Y. Kuwahara, H. Nakamura, K. Sawada, M. A. Ikeda, T. Ando, K. Hayashi, M. Nishida, T. Usami, D. Kameyama, H. Nishi, A. Kuroyanagi, B. R. Gyawali   +14 more
doaj   +1 more source