Results 101 to 110 of about 1,392,562 (335)

Fluid evolution in fracturing black shales, Appalachian Basin

, 2017
Opening-mode veins in cores drilled from the mudrocks overlying and underlying the major Silurian salt decollement in the Appalachian plateau (Tioga and Lawrence Counties, Pennsylvania) have mineralogic and isotopic compositions generally matching those ...
J. Hooker, J. Cartwright, B. Stephenson, C. Silver, A. Dickson, Y. Hsieh   +5 more
semanticscholar   +1 more source

Restricted cirque glaciers in the Wicklow Mountains, Ireland, during the Nahanagan Stadial (Greenland Stadial‐1/Younger Dryas)

Journal of Quaternary Science, EarlyView.
ABSTRACT In Ireland, the Nahanagan Stadial (NS) was characterised by cirque glacier, plateau icefield and mountain ice cap expansion and is named after the cirque glacier type‐site of Lough Nahanagan in the Wicklow Mountains. This period is broadly equivalent to the Younger Dryas Stadial and Greenland Stadial‐1 (GS‐1: ~12.9–11.7 ka).
Lauren Knight, Clare M. Boston, Harold Lovell, Timothy T. Barrows, Eric A. Colhoun, David Fink, Nicholas C. Pepin   +6 more
wiley   +1 more source

Gamma-ray spectrometry across the Upper Devonian basin succession at Kowala in the Holy Cross Mountains (Poland) [PDF]

, 2003
The Upper Devonian sequence at Kowala in the Holy Cross Mountains was logged using gamma-ray spectrometry, for investigating the changes of oxygenation level in the Late Devonian basin.
Bond, D.P.G., Zaton, M.
core   +2 more sources

Organic petrography and trace element geochemistry of organic black shales in the Kribi Campo sub-Basin, West Africa: Implication for petroleum source rock evaluation and depositional environment

Scientific African, 2023
The aim of this study was to characterise the maceral properties, depositional environment and petroleum source rock properties of black shales deposits of the lower Mundeck Formation of the Douala Kribi Campo sub-basin from organic petrography and trace
Kah Odilia Sih, Bokanda Ekoko Eric, Florence Njinto Kwankam, Cortland F. Eble, Yugyè Jules Alex, Ashukem Ethel Nkongo, Mokake Fidelis Esue, Agyingi Christopher   +7 more
doaj  

High resolution stratigraphy and paleoenvironmental reconstruction of the Upper Devonian Kettle Point Formation, southwestern Ontario, Canada [PDF]

, 2015
The Upper Devonian Kettle Point Formation of southwestern Ontario consists of interbedded organic-rich black shales and organic-poor greyish green mudstones and red beds, the distribution of which were controlled by water depth, primary productivity ...
Bingham-Koslowski, Nikole E
core   +1 more source

Heavy Metal Contamination in Arenillas Ecological Reserve Soils: Correlation and Conservation Impact

Land Degradation &Development, EarlyView.
ABSTRACT This study addresses the critical knowledge gap regarding heavy metal contamination in the soils of the Arenillas Ecological Reserve (AERv), located on the southwest coast of Ecuador. Despite being a fragile and highly biodiverse ecosystem, little is known about the magnitude, spatial distribution, and drivers of heavy metal contamination in ...
Vinicio Carrión‐Paladines, James Calva, Teddy Ochoa‐Pérez, Leslye Ruiz, Fausto López‐Rodríguez   +4 more
wiley   +1 more source

From Siliciclastics to Carbonates and Black shales: Deciphering Sedimentary Continuity and Discontinuity in the Devonian Landscapes of the Volga-Ural Petroleum Province

Georesursy
Analyses of the three predominant types of sedimentation – siliciclastic, carbonate and black shale – revealed their discontinuity/continuity across various facies environments within the Middle and Late Devonian of the central part of the Volga-Urals ...
V. V. Silantiev, D. N. Miftakhutdinova, N. G. Nurgalieva   +2 more
doaj   +1 more source

Magmatic and hydrothermal behavior of uranium in syntectonic leucogranites: The uranium mineralization associated with the Hercynian Guérande granite (Armorican Massif, France) [PDF]

, 2017
Most of the hydrothermal uranium (U) deposits from the European Hercynian belt (EHB) are spatially associated with Carboniferous peraluminous leucogranites.
Ballouard, C., Boulvais, P., Cathelineau, M., Cuney, M., Deloule, E., Jolivet, M., Kéré, I., Mercadier, J., Poujol, M., Tartèse, R., Venneman, T.   +10 more
core   +3 more sources

A multi‐dimensional index of evaluating systems thinking skills from textual data

Systems Research and Behavioral Science, EarlyView.
Abstract Systems thinking (ST) includes a set of critical skills and approaches for addressing today's complex societal problems. Therefore, it has been introduced into the curricula of many educational programmes around the world. Despite all the attention to ST, there is less consensus when it comes to evaluating and assessing ST skills. Particularly,
Ning‐Yuan Georgia Liu, Hesam Mahmoudi, Konstantinos Triantis, Navid Ghaffarzadegan   +3 more
wiley   +1 more source

Toarcian oceanic anoxic event: An assessment of global causes using belemnite C isotope records [PDF]

, 2005
Two hypotheses have been proposed to explain simultaneous large negative excursions (up to 7% PeeDee belemnite) in bulk carbonate (delta(13)C(carb)) and organic carbon isotope records (delta(13)C(org)) from black shales marking the Toarcian oceanic ...
Bailey, TR, McArthur, JM, Miller, KG, Rosenthal, Y, van de Schootbrugge, B, Wright, JD   +5 more
core   +1 more source