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Barry J. Hibbs
Environmental problems may develop in groundwater basins when water levels change due to long-term wetter or drier climate or land development. A term related to water-level elevation is flow capacity, which develops in aquifers when the water table is a...
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Susana Machado, Lia Mergulhão, Bruno Claro Pereira, Pedro Pereira, Jorge Carvalho, José António Anacleto, Carlos Neto de Carvalho, João Belo, Ricardo Paredes and Andrea Baucon
The Cabeço da Ladeira paleontological site in central Portugal became known as the ?Jurassic Beach?. Formerly an active quarry, the site was protected in order to preserve the large exposures of a Middle Jurassic (early? Bajocian) carbonate tidal flat wi...
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Nerina Canale,Juan José Ponce,Noelia B. Carmona,Martín N. Parada,Daniel I. Drittanti
Pág. 179 - 206
Sedimentologic and ichnologic analysis of the Middle Jurassic Lajas Formation in Bajada de Los Molles area allow recognizing upper offshore-lower shoreface deposits in transition to prodelta, delta front and interdistributary bay succesions. This system ...
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Vyacheslav Polyakov, Evgeny Abakumov and Bulat Mavlyudov
Enormous deglaciation in the polar and mountainous regions of the Earth is associated not only with large-scale climatic changes but also with the global transfer of black carbon (BC) microparticles, which accumulate on the surface of glaciers and lead t...
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Mark A. S. McMenamin
Deuterostomes make a sudden appearance in the fossil record during the early Cambrian. Two bilaterian groups, the chordates and the vetulicolians, are of particular interest for understanding early deuterostome evolution, and the main objective of this r...
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George E. Mustoe and Mike Viney
An extensive fossil forest discovered in 2010 on private property in central Colorado, USA, has not previously been described in scientific literature. Horizontal partial logs originated as fluvially transported driftwood. A preliminary study of petrifie...
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Scott Jiusto and Stephen McCauley
This paper examines sustainability transition dynamics in the US electricity system, drawing on the socio-technical systems approach. We view system change as unfolding along several critical dimensions and geographical scales, including dynamics in the ...
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Jacobus P. Le Roux,Sven N. Nielsen,Álvaro Henríquez
Pág. 307 - 320
Stelloglyphus llicoensis isp. nov. is a large radial, discoidal to ellipsoidal trace fossil with a central shaft and single to bifurcating branches radiating from different levels. A 30 m thick measured section of the Ranquil Formation at Punta Litre con...
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C. Mike Bell,Manuel Suarez
Pág. 203 - 225
ABSTRACT. The Apeleg Formation is a Lower Cretaceous marine succession of the Aisen Basin of southern Chile. Clastic sediments were deposited in a shallow epicontinental sea in a north-south elongated retroarc basin. This sedimentary basin developed as t...
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Vladimir Covacevich,Manuel Suarez,Patricio Sepulveda
Pág. 19 - 25
Resumen. En esta contribucion se describe la presencia de trazas fosiles, atribuidas a la actividad cavadora de crustaceos decapodos marinos, en areniscas de grano muy fino, de edad norica superior-retica del Miembro Lutitico de la Formacion Los Molles, ...
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