Abstract In the Transdanubian Range (Hungary), a wide spectrum of Triassic dolomites is known. Mechanism dolomitization platform carbonate successions was subject number studies but study basinal carbonates very limited. Petrographical and isotope–geochemical characteristics Upper dolomitized deposits, formed in fault-controlled intraplatform basin, interpretation dolomite-forming processes are...

Abstract The Proterozoic Chotanagpur Granite Gneiss Complex (CGGC) at the northern boundary of Central Indian Tectonic Zone (CITZ) eastern shield preserves relics fossilized oceanic back-arc crust. We describe field, petrographical and geochemical characteristics mafic rocks comprising pillow basalts dolerites from Bathani area fringe CGGC, India. consist plagioclase feldspar, hornblende, opaqu...

Purpose. The work studies Sinjar formation (upper Paleocene lower Eocene) within the Bazyan anticline in Sulaimaniyah region (northeastern Iraq). facies analysis is based on petrographic study of limestone deposits and essential to identify their nature. sediments that formed have a high content skeletal granules which include small amount red algae residues unicellular organisms-foraminifera. ...

Abstract The present study aims at an integration of both petrographic and petrophysical data 45 sandstone samples collected from Araba Formation (Lower Paleozoic) for reservoir characterization. studied is classified into three types facies: (i) quartz arenite, (ii) sublithic (iii) calcareous arenite. mineralogical composition the includes mainly detrital clays, some pyrite, iron oxides as cem...

Distribution patterns, petrography, whole-rock and mineral chemistry, and shape and fabric data are described for the most representative basement lithologies occurring as clasts (granule to boulder grain-size class) from the 625 m deep CRP-2/2A drillcore. A major change in the distribution pattern of the clast types occurs at c. 310 mbsf, with granitoid-dominated clasts above and mainly doleri...

Absbvct New petrographic and chemical data of volcanic rocks from the Metales Belt, Rio de las Tunas area, in the Frontal Cordillera of Argentina are presented. The rocks display a broadly basaltic composition. ‘PNO varieties of basaltic dikes can be differentiated. One group, whose mineralogy comprise essentially tremolite-actinolite, plagioclase, pyroxene and limited amounts of olivine as the...