Results 91 to 100 of about 6,037 (231)

The potential susceptibility of urban hardrock aquifers to hydraulic and contaminant stresses: The case of Shah Alam, Malaysia

open access: yes, 2017
Urban groundwater needs proper management since it is potentially susceptible to both hydraulic and chemical stresses. To manage an aquifer well, an understanding is needed of how the aquifer works.
Roslan, Norsyafina
core  

Magmatic-hydrothermal origin for tungsten in the quartz vein deposits of the Karagwe-Ankole Belt (Rwanda)

open access: yes, 2015
Most of the rare metal mineralisation in highly differentiated facies of zoned granites or in syngenetic pegmatite dykes results from advanced fractional crystallization.
Muchez, Philippe   +3 more
core  

The Chemical Composition of the Shuksan Metamorphic Suite in the Gee Point - Finney Creek Area, North Cascades, Washington

open access: yes, 1981
Samples from the Shuksan Metamorphic Suite in the Gee Point-Finney Creek area were analyzed for twelve major elements and for the trace elements Y, Sr, Rb, Sc, Ni, Cr, Cu, Zr and Ba. The chemical compositions suggest that the protolith for the blueschist
Street-Martin, Leah V.
core  

Exhalative metasediments ? clues to the real nature of regional metamorphic processes?

open access: yesMineralogy and Petrology, 2004
Regional metamorphic petrogenetic theory is currently dominated by the hypothesis that the principal grade indicator silicates and their related minerals arise by a variety of chemical reactions. It is postulated that, with rise (or fall) in regional crustal temperature and pressure, original materials become destabilized, break down, and are dissolved
openaire   +1 more source

Spåra ursprunget av metasedimentära bergarter från Färö-Shetland bassängen

open access: yes, 2016
The Faroe-Shetland region has been exposed to a long history of tectonic events and the geology in the area is rather complex. This history has led to the formation large metasedimentary deposits, though the origin of these deposits is not yet fully ...
Eriksson, Sarah
core  

Dating and differentiation of geological units in highly deformed and metamorphosed rocks – Can palynology help? Examples from the Ossa-Morena Zone (W Portugal)

open access: yes, 2011
Macrofossils and most mineralized microfossils are often absent in metasediments and commonlyunrecognizable in deformed rocks. Conversely, organic-walled microfossils such asspores/pollen, acritarchs and chitinozoans (i.e.
Fonseca, P. E.   +4 more
core  

A spatial reconnaissance survey for gold exploration in a schist belt. [PDF]

open access: yesHeliyon, 2021
Tende AW   +5 more
europepmc   +1 more source

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