Results 11 to 20 of about 4,293 (167)
Coupled changes in western South Atlantic carbon sequestration and particle reactive element cycling during millennial-scale Holocene climate variability [PDF]
Scientific Reports, 2021 Abstract Continental shelves have the potential to remove atmospheric carbon dioxide via the biological pump, burying it in seafloor sediments. The efficiency of marine carbon sequestration changes rapidly due to variations in biological productivity ...
Bruna B. Dias +5 more
doaj +2 more sources
Carbon Management, 2021 Manual static chamber is one of the most widespread methods for the quantification of greenhouse gases (GHGs) emissions from agricultural systems. But there are concerns about the reliability of measurements and a necessity to assess the static chambers ...
Fernanda Figueiredo Granja Dorilêo Leite +11 more
doaj +1 more source
The Depositional Record, Volume 9, Issue 4, Page 789-809, November 2023., 2023 Breakage along cleavage surfaces and little abrasion in clinopyroxene grains occurs after fluvial, marine and aeolian transport. Compactness measurements are an alternative shape descriptor to determine the morphology of minerals. Abstract This work investigates how the surface textures and morphology of pyroxene grains evolve during their source‐to ...
Juan J. Kasper‐Zubillaga +5 more
wiley +1 more source
Estudios Geologicos, 1988 En el presente trabajo se analiza el contenido de las distintas tipologías de cuarzo, definidas por Basu et al. (1975) para análisis de procedencia, en depósitos arenosos actuales, generados a partir de macizos del Sistema Central con distintas ...
A. Tortosa, M. Palomares, J. Arribas
doaj +1 more source
Orbital Forcing and Evolution of the Southern African Monsoon From Late Miocene to Early Pliocene
Paleoceanography and Paleoclimatology, Volume 38, Issue 9, September 2023., 2023 Abstract The late Miocene‐early Pliocene (7.4‐4.5 Ma) is a key interval in Earth's history where intense reorganization of atmospheric and ocean circulation occurred within a global cooling scenario. The Southern African monsoon (SAFM) potentially played an important role in climate systems variability during this interval.
Allana Queiroz de Azevedo +11 more
wiley +1 more source
Estudios Geologicos, 1984 Las rocas metamórficas del área (cuarcitas con distintos grados de pureza, porfiroides, pelíticas, calcosilicatadas, migmatíticas y sus equivalentes cataclásticos) permiten establecer un origen sedimentario con posible y variable aporte calcoalcalino ...
J. Saavedra +3 more
doaj +1 more source
A Comparison Study of Mg/Ca‐, Alkenone‐, and TEX86‐Derived Temperatures for the Brazilian Margin
Paleoceanography and Paleoclimatology, Volume 38, Issue 8, August 2023., 2023 Abstract The reconstruction of accurate sea‐surface temperatures (SST) is of utmost importance due to the ocean's central role in the global climate system. Yet, a number of environmental processes might bias reliable SST estimations. Here, we investigate the fidelity of SST reconstructions for the western tropical South Atlantic (WTSA) for the ...
A. Bahr +7 more
wiley +1 more source
Estudios Geologicos, 1987 El estudio metalogénico realizado en las formaciones superiores dcl Tremadociense, pertenecientes a la rama occidental del zócalo de la Cordillera Ibérica, ha permitido clasificar, como sinsedimentarios-epigenéticos a muchos de los indicios minerales de ...
A. Gutiérrez +4 more
doaj +1 more source
Geoarchaeology, Volume 38, Issue 4, Page 482-509, July/August 2023., 2023 Abstract The Monforte de Moyuela dam, also known as Ermita de la Virgen del Pilar dam, is a Roman reservoir built on a tributary of the Aguasvivas River (Ebro basin, Spain). A multidisciplinary study has been carried out to investigate this kind of Roman water infrastructure. It is the fifth‐highest dam (16.8 m) in the Iberian Peninsula and the seventh
José Luis Peña‐Monné +6 more
wiley +1 more source
Caracterización composicional de los depósitos arenosos actuales generados en el Sistema Central
Estudios Geologicos, 1989 Se caracteriza composicionalmente la fracción ligera arenosa de los depósitos detríticos actuales generados en zonas de cabecera de arroyos que drenan macizos del Sistema Central con distintas litologías (plutónicas, gnéisicas o pizarras-esquistos ...
A. Tortosa, M. Palomares, J. Arribas
doaj +1 more source