Results 101 to 110 of about 24,905 (235)

Minerals in Afghanistan : the potential for copper [PDF]

, 2006
There are around 300 documented copper deposits, occurrences and showings in Afghanistan as shown in Figure 1. A variety of styles of copper mineralisation occur in rocks ranging in age from Proterozoic to Neogene.
Benham, Antony John, Coats, Stan
core  

Geoquímica do Gabro Coronítico de Amparo (RJ) [PDF]

Anuário do Instituto de Geociências, 2002
The aim of this paper is to present geochemical data and some petrological aspects of the Amparo gabbroic (hyperite) body, located approximately 30 km east of the town, Nova Friburgo, Rio de Janeiro State. Ten samples of these basic rocks were analysed
Isabel Pereira Ludka, Cristina Maria Wiedemann   +1 more
doaj  

Characteristics of ∼40 Ma Mafic Rocks in North Tibet and Their Tectonic Implications

Geochemistry, Geophysics, Geosystems
Several magmatic belts are present in the Tibetan Plateau. Among these, the Qiangtang magmatic belt in North Tibet remains elusive. In particular, the petrogenesis, magma source, and tectonic implications of the ultramafic to mafic rocks in the North ...
Shifeng Wang, Licai Song, Shengting Zhang, Weifeng Xiao   +3 more
doaj   +1 more source

DIFFERENT GEOCHEMICAL SIGNATURES DEVELOPED IN BASIC MAGMATIC ROCKS OF MT. KALNIK (NORTH CROATIA)

Rudarsko-geološko-naftni Zbornik, 2004
Basic magmatic rocks of Mt. Kalnik experienced hydrothermal alteration and low grade metamorphism. In such circumstances the most useful tracers of their magma sources and tectonic settings are REE patterns and other normalized trace element abundance ...
Maja Vrkljan, Vesnica Garašić
doaj  

Infiltration of basinal fluids into high-grade basement, South Norway: sources and behaviour of waters and brines

, 2003
Quartz veins hosted by the high-grade crystalline rocks of the Modum complex, Southern Norway, formed when basinal fluids from an overlying Palaeozoic foreland basin infiltrated the basement at temperatures of c.220degreesC (higher in the southernmost ...
Boyce, A.J., Gleeson, S.A., Munz, I.A., Yardley, B.W.   +3 more
core   +1 more source

Search for magnetic monopoles in polar volcanic rocks

, 2013
For a broad range of values of magnetic monopole mass and charge, the abundance of monopoles trapped inside the Earth would be expected to be enhanced in the mantle beneath the geomagnetic poles.
Bendtz, K., Hirt, A. M., Hächler, H. -P., Mermod, P., Michael, P., Milstead, D., Sloan, T., Tegner, C., Thorarinsson, S. B.   +8 more
core   +1 more source

The boundary between the Central Asian Orogenic belt and Tethyan tectonic domain deduced from Pb isotopic data [PDF]

, 2015
Castillo, Paterno R, Feng, Zuohai, Huo, Qiye, Liu, Xijun, Shi, Yu, Wang, Shuqing, Xiao, Wenjiao, Xu, Jifeng   +7 more
core   +1 more source

A geologic atlas of TIMS data [PDF]

In the three years since the first data were taken, it was well demonstrated that the Thermal Infrared Multispectral Scanner (TIMS), properly used, can be a most valuable tool for the geologist.
Abbott, Elsa
core   +1 more source

Metamorphic fluids and uplift-erosion history of a portion of the Kapuskasing structural zone, Ontario, as deduced from fluid inclusions [PDF]

Fluid inclusions can be used to determine the compositional evolution of fluids present in high grade metamorphic rocks (Touret, 1979) along with the general P-T path followed by the rocks during uplift and erosion (Hollister et al., 1979).
Ashwal, L. D., Henry, D. J., Rudnick, R. L.   +2 more
core   +1 more source

neoKREEP: A new lunar component at Apollo 17 [PDF]

The Apollo 11 (Mare Tranquillitatis) and Apollo 17 (Mare Serenitatis) landing sites are important as the only sources of high-Ti basalt visited by the Apollo missions.
Jerde, Eric A., Snyder, Gregory A., Taylor, Lawrence A.   +2 more
core   +1 more source