Results 171 to 180 of about 60,699 (261)

A review of the supercritical state of eruption‐fed volcanic density currents in subaerial and subaqueous settings

Sedimentology, EarlyView.
ABSTRACT Subaerial Pyroclastic Density Currents (PDCs) and Subaqueous Eruption‐Fed Density Currents (SEFDCs) produced during volcanic eruptions can present major hazards to surrounding communities and ecosystems. The bedforms deposited by these volcanic density currents can provide insights into the nature of transport and depositional processes, which
Shannon E. Frey, Martin Jutzeler, Rebecca J. Carey   +2 more
wiley   +1 more source

Contemporaneous mobile- and stagnant-lid tectonics on the Hadean Earth. [PDF]

Nature
Valley JW, Blum TB, Kitajima K, Shimizu K, Spicuzza MJ, Gonzalez JP, Kita NT, Bauer AM, Sobolev SV, Jain C, Cavosie AJ, Sobolev AV.   +11 more
europepmc   +1 more source

The making of pure quartzose sand in continental interiors: Paraná River (Brazil and Argentina)

Sedimentology, EarlyView.
ABSTRACT As part of a comprehensive project on sedimentary processes in South America, this study focuses on sediment generation in the intracratonic Paraná Basin and monitors the evolution of sand composition along the Paraná River from central Brazil to the Río de la Plata estuary in Argentina.
Eduardo Garzanti, Marta Barbarano, Mara Limonta, Guido Pastore, Pieter Vermeesch, Giovanni Vezzoli   +5 more
wiley   +1 more source

Generating geochemical and mineralogy distributions of soil in the conterminous United States using Bayesian hierarchical spatial models. [PDF]

MethodsX
Bondo KJ, Wolf TM, Walter WD.
europepmc   +1 more source

Sedimentary biogeochemical provinces in the northern limit of the oxygen minimum zone from the northeastern Mexican Pacific

Sedimentology, EarlyView.
ABSTRACT Continental margins are reservoirs of materials of terrestrial and marine origin, and they play a crucial role in understanding the spatial and temporal variability of biogeochemical cycles. This, in turn, provides insights into the development and intensity of oxygen minimum zones (OMZs).
Alberto Sánchez
wiley   +1 more source

Evolution Model for the Paleoproterozoic Talvivaara Mudstone‐Hosted Ni‐Zn‐Cu‐Co Deposit in Fennoscandia

Terra Nova, EarlyView.
ABSTRACT The Paleoproterozoic Talvivaara mudstone is a very large sulfidic Ni‐Co deposit that records enhanced organic matter accumulation during the global Shunga Event. Here, rock geochemistry and microscale S and Fe isotope composition of in situ pyrrhotites and pyrites are studied in well‐characterised, well‐preserved drill core samples.
Raimo Lahtinen, Jaakko J. Laitala, Joonas J. Virtasalo, Martin J. Whitehouse   +3 more
wiley   +1 more source

Origin of continental crust on early Earth. [PDF]

Natl Sci Rev
Zheng YF.
europepmc   +1 more source

Loss of vegetation functions during the Paleocene-Eocene Thermal Maximum. [PDF]

Nat Commun
Rogger J, Korasidis VA, Bowen GJ, Shields CA, Gerya TV, Pellissier L.   +5 more
europepmc   +1 more source

Mantle upwelling at Afar triple junction shaped by overriding plate dynamics. [PDF]

Nat Geosci
Watts EJ, Rees R, Jonathan P, Keir D, Taylor RN, Siegburg M, Chambers EL, Pagli C, Cooper MJ, Michalik A, Milton JA, Hincks TK, Gebru EF, Ayele A, Abebe B, Gernon TM.   +15 more
europepmc   +1 more source

Report on geochemical models

Report on description and geochemical models expandable in time and space of the processes controlling the long term effects of CO2 and CH4 ...
openaire   +1 more source