30 documents found, page 1 of 3

Mineração nos Fundos Marinhos e Protecção Ambiental: Comentário

Lucky Strike: is it a TAG (Trans-Atlantic Geotraverse) precursory hydrothermal ...

Long-term application of the organic and inorganic pesticides in vineyards: Env...

Areas such as Douro Demarcated Region (Portugal), where vineyards are frequently located on steep slopes of narrow valleys, can be particularly sensitive to runoff and erosion processes. These particular conditions are expected to enhance the transport of pollutants, acting as a potential source of contamination to freshwater systems. The intense vine cultivation in this region includes decades of pesticides ap...

The 1998-2001 submarine lava balloon eruption at the Serreta Ridge (Azores arch...

The most recent submarine eruption observed offshore the Azores archipelago occurred between 1998-2001 along the submarine Serreta ridge (SSR), ~4-5 nautical miles WNW of Terceira Island. This submarine eruption delivered abundant basaltic lava balloons floating at the sea surface and significantly changed the bathymetry around the eruption area. Our work combines bathymetry, volcanic facies cartography, petrog...

Underwater Mining Institute 2014 - Harvesting Seabed Mineral Resources in Harmo...

The 43rd Conference of the Underwater Mining Institute September 21–28, 2014 • Lisbon, Portugal Come and join us in sunny Portugal, where Heritage speaks of the great sea discoveries, celebrated in innumerable unique monuments, side by side with narrow, medieval streets like live Renoir paintings in every corner. Experience the famous Portuguese hospitality, and its remarkable cuisine and wines. Listen to Fado....

THE ENVIRONMENTAL IMPACT OF USING COPPER SULPHATE TO AVOID GRAPEVINE POWDERY MI...

Copper-based fungicides have been used in vineyards throughout the world, for many decades to protect against downy mildew. However, their use results in an accumulation of Cu in surface soils which can potentially impact on the biological health of the soil and could be transported and stored in the sediments deposited close to valley bottoms. In Douro region, northern of Portugal, vineyards are located on ste...

GRAPEVINE CULTIVATION AND THE GEOCHEMISTRY OF ZINC: IMPACT ON THE ENVIRONMENTAL...

This study presents preliminary results of a research project that aims assessing the environmental impact of intensive grapevine cultivation in the Alto Douro wine region, a World Heritage Site. A total of 50 soil samples were collected from three nearby vineyards of different ages. Surface drainage of these vineyards discharges into an important water reservoir, the Varosa Dam. The dam collects water from two...

Geochemistry of metals in the bottom sediments of tropical dam reservoirs in Sa...

In tropical climates, the high rainfall and temperature, throughout the annual cycle, allow high leaching rates of metallic elements from the basin upstream, which accumulate in the reservoirs. However, the concentration of these elements in natural waters is usually lower than expected, due to the easiness of adsorption and co-precipitation in solid phases. We have studied two tropical dam reservoirs in Brazil...

Tourmaline occurrences within the Penamacor-Monsanto granitic pluton and host-r...

Tourmalinization associated with peraluminous granitic intrusions in metapelitic host-rocks has been widely recorded in the Iberian Peninsula, given the importance of tourmaline as a tracer of granite magma evolution and potential indicator of Sn-W mineralizations. In the Penamacor-Monsanto granite pluton (Central Eastern Portugal, Central Iberian Zone), tourmaline occurs: (1) as accessory phase in two-mica gra...

O Complexo Vulcano-Sedimentar de Toca da Moura-Cabrela (Zona de Ossa Morena) : ...