The origin of carbon substrates used by in situ sedimentary bacterial communities was investigated in an intertidal mangrove ecosystem and in adjacent seagrass beds in Gazi bay (Kenya) by δ13C analysis of bacteria-specific PLFA (phospholipid fatty acids) and bulk organic carbon. Export of mangrove-derived organic matter to the adjacent seagrasscovered bay was evident from sedimentary total orga...

In Saccharomyces cerevisiae, at least 12 genes are important for cells to propagate in medium containing elevated concentrations of copper salts (J. Welch, S. Fogel, C. Buchman, and M. Karin, EMBO J. 8:255-260, 1989). Complementation studies were carried out on a copper-sensitive mutation (cup14) from this group. A new yeast gene, designated SLF1, was identified as a multicopy suppressor of the...

introduction the baqoroq cu-zn-as deposit is located northeast of the town ofanarak in isfahan province, in theeast central areaof iran. copper mineralization occursin upper cretaceous carbonate rocks.studyof thegeologyof the nakhlak area, the location ofa carbonate-hosted base metaldeposit, indicatesthe importance of stratigraphic, lithological and structural controls in the placement of this ...

The Hubi copper (cobalt) ore district, one of the largest typical examples sediment-hosted stratiform type in Zhongtiao Mountain area, is located on southern margin Trans-North China Orogen within North Craton (NCC) and has a reserve 0.79 Mt. Mineralization mainly hosted by Group, sequence metasedimentary rocks deposited from ~2168 Ma to ~2059 Ma. Subsequently, collisional orogeny (Trans-North ...

the study area is located in southeastern iran, about 110 km southwest of kerman. geologically, the area is composed of ophiolitic rocks, volcanic rocks, intrusive bodies and sedimentary rocks. vein mineralization within andesite, andesitic basalt, andesitic tuffs occurred along the chahar gonbad fault. sulfide mineralization in the ore deposit has taken place as dissemination, veins and veinle...

Copper mineralization in the Lower Paleozoic sedimentary cover of Anti-Atlas (Morocco) is continually being revised not only to improve its mining capacity, but also determine origin, which remains a matter debate. As evidenced by various models proposed, related research fragmented, localized, and confusing. The origin copper shared between synergistic epigenetic processes or superposition two...

This work aims at figuring out the spatial relationships between the geophysical and geological models in a case study pertaining to copper-sulfide mineralization through an integrated 3D analysis of favorable target. The Ghalandar Skarn-Porphyry Cu Deposit, which is located in NW Iran, is selected for this research work. Three geophysical surveys of direct current electrical resistivity and in...

We present high-precision chemical abrasion-isotope dilution-thermal ionization mass spectrometry (CA-IDTIMS) U-Pb zircon and isotope dilution-negative-thermal ionization mass spectrometry (ID-N-TIMS) Re-Os molybdenite geochronology of the world-class Tibetan Qulong porphyry Cu-Mo deposit. The data is used to constrain the timing, duration, and to yield implications for the ore-forming processe...