Results 51 to 60 of about 11,994 (188)

Weathering of the Ethiopian volcanic province: a new weathering index to characterize and compare soils [PDF]

open access: yes, 2015
© Walter de Gruyter Berlin/Boston 2015.Soil formation occurs through numerous physical and chemical weathering processes acting to alter the parent rock on the Earths surface.
Baxter, PJ   +6 more
core   +1 more source

The magmatic architecture of continental flood basalts I : Observations from the Deccan Traps

open access: yesJournal of Geophysical Research: Solid Earth, 2021
Abstract Flood basalts are some of the largest magmatic events in Earth history, with intrusion and eruption of millions of km 3 of basaltic magma over a short time period (∼1–5 Ma).
Tushar Mittal   +2 more
openaire   +1 more source

Geochemical characterization and protolith restoration of Permo-Triassic graphite-bearing schists at Band-e-Cherk district, Kuh-e-Dom metamorphic zone [PDF]

open access: yesپترولوژی
Introduction Schist and gneiss metamorphic rocks, especially in orogenic belts, mainly host microcrystalline, amorphous, and flaky graphite deposits in the Earth’s crust.
Majid Ghasemi Siani   +4 more
doaj   +1 more source

Contrasting stress fields on correlating margins of the South Atlantic [PDF]

open access: yes, 2015
The “passiveness” of passive continental margins across the globe is currently under debate since several studies have shown that these margins may experience a variety of stress states and undergo significant vertical movement post-breakup.
Glasmacher, Ulrich Anton   +4 more
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]

open access: yes, 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.   +4 more
core   +2 more sources

Petrogenesis of the Adigrat basalts from the Oligocene Ethiopian flood basalt province in Tigrai, Northern Ethiopia

open access: yesScientific African
The Adigrat basalts are exposed along a prominent E-W extending ridge between Adigrat and Shire at the northern edge of the Ethiopian continental flood basalt province. They form up to twenty three individual lava flows with a total thickness of ∼ 1200 m.
Angesom Resom   +3 more
doaj   +1 more source

Oxygen Isotope Variations of Basaltic Lavas and Upper Mantle Rocks [PDF]

open access: yes, 2001
This chapter summarizes the oxygen isotope geochemistry of terrestrial basalts and their mantle sources, including the conceptual framework for interpreting such data and the phenomenology of known variations.
Eiler, John M.
core  

Magma Evolution During Main‐Phase Continental Flood Basalt Volcanism: A Case for Recharge‐Evacuation‐Assimilation‐Fractional Crystallization in the Ethiopian Low‐Ti Province

open access: yesGeochemistry, Geophysics, Geosystems
Lavas erupted in Continental Flood Basalt (CFB) provinces are not primary magmas; they are differentiated products that result from large volumes of melt migrating and stalling in the lithosphere prior to eruption, resulting in complex liquid lines of ...
S. R. Krans   +4 more
doaj   +1 more source

High resolution bathymetric survey on the NW slope of Walvis Ridge, offshore Namibia [PDF]

open access: yes, 2011
Expedition 17/1 of the German research vessel R/V MARIA S. MERIAN, carried out geophysical surveys and experiments between November and December 2010 in the area around Walvis Ridge, Southeast Atlantic Ocean.
Behrmann, Jan H.   +2 more
core  

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]

open access: yes, 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.   +5 more
core   +1 more source

Home - About - Disclaimer - Privacy