Results 41 to 50 of about 6,471 (146)

Droughts and human impact in the ancient Uaymil region of the Maya lowlands inferred from a 2800‐year sedimentary archive at Lake Kaná, Mexico

open access: yesBoreas, EarlyView.
The relationship between the climate and societal transformation in Maya lowlands has long been debated, particularly the role of drought in shaping the civilization trajectory during the Classic Period. A high‐resolution, multi‐proxy, geochemical record from Lake Kaná, located in the underexplored Uaymil region of the Yucatán Peninsula in Mexico ...
Haydar B. Martinez‐Dyrzo   +5 more
wiley   +1 more source

Development of CCMb: A Low‐Mg Calcite Reference Material for In Situ Measurement of δ18O, δ13C and Selected Trace Elements

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points Low‐Mg calcite RM developed for in situ microanalysis applications in palaeoclimatology (δ18O, δ13C; Mg, Sr m/m). New data for calcite CRM IAEA‐603 (δ18O, δ13C by SIMS and GS‐IRMS; Mg m/m). No detectable IMF effect of Mg on SIMS δ18O determinations for mass fractions < 3650 μg g‐1.
Andreas T. Hertwig   +13 more
wiley   +1 more source

Relações pedomorfogeológicas e distribuição de pedoformas na estação ecológica de águas emendadas, Distrito Federal

open access: yesRevista Brasileira de Ciência do Solo, 2012
O Distrito Federal (DF) apresenta um modelo de distribuição de solos na paisagem condicionado pela compartimentação geomorfológica e substrato geológico.
Marilusa Pinto Coelho Lacerda   +1 more
doaj   +1 more source

Climate conditions on the South‐Iberian Palaeomargin during the latest Pliensbachian to early Toarcian: A mineralogical and geochemical study from hemipelagic deposits

open access: yesSedimentology, EarlyView.
ABSTRACT The integrated analysis of lithofacies, mineralogy and geochemistry of the hemipelagic marine succession exposed in La Cerradura section (South‐Iberian Palaeomargin) provides new information to characterise the palaeoenvironmental conditions during the latest Pliensbachian to early Toarcian, including the Jenkyns Event.
Chaima Ayadi   +4 more
wiley   +1 more source

A Geologia, os geólogos e o manto da invisibilidade

open access: yesComunicação e Sociedade, 2012
O distanciamento entre a ciência e a sociedade tem vindo a preocupar os cientistas durante as últimas décadas. Neste trabalho apresentam-se alguns factores que podem, pelo menos em parte, justificar este afastamento, recorrendo ao exemplo da Geologia ...
José Brilha
doaj   +1 more source

Unconventional Fiscal Policies in Response to Inflation: The Iberian Exception in Portugal

open access: yesScottish Journal of Political Economy, EarlyView.
ABSTRACT The surge in Eurozone inflation in 2022 compelled European governments to implement unconventional fiscal policies. One initiative, the Iberian Exception, imposed a cap on the cost of natural gas used for electricity generation in Portugal and Spain.
Lourenço Cerdeira   +2 more
wiley   +1 more source

A Global Review of Microplastic Contamination in Groundwater: Empirical Evidence and Latin American Perspectives

open access: yesWater and Environment Journal, EarlyView.
ABSTRACT The presence of microplastics (MPs) in groundwater has emerged as a significant concern due to their environmental impact and the threat they pose to vital water resources, groundwater being one of the most important freshwater sources in the world.
Lara Luiza de Oliveira Pompermayer   +7 more
wiley   +1 more source

Silva Coutinho: uma trajetória profissional e sua contribuição às coleções geológicas do Museu Nacional

open access: yesHistória, Ciências, Saúde: Manguinhos, 2013
A trajetória profissional de João Martins da Silva Coutinho relaciona-se à história do Museu Nacional (Rio de Janeiro), para cujas coleções, principalmente geológicas, ele contribuiu com informações científicas e remessa de material.
Marina Jardim e Silva   +2 more
doaj   +1 more source

Digitized Stratigraphic and Geophysical Logs From Deep Boreholes in the 2022 Mw 5.5 Fano‐Pesaro Earthquake Region, Adriatic Sea, Italy

open access: yesGeoscience Data Journal, Volume 13, Issue 3, July 2026.
Legacy borehole documentation from seven deep exploration wells in the Pesaro–Fano offshore area (Adriatic Sea) was digitized into an accessible dataset of stratigraphic and geophysical data. The dataset is openly available in the Zenodo repository and supports future geological and geophysical studies in the Adriatic region and beyond.
Elham Safarzadeh   +3 more
wiley   +1 more source

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