نتایج جستجو برای: source rock geochemistry

تعداد نتایج: 459759  

اعتمادی, بیژن, تقی‌پور, بتول, قبادی, عبدالهادی,

Nodoushan clay deposit is located about 130km southwest of Yazd city in the Uromieh-Dokhtar volcano-plutonic belt. Based on the field, mineralogical and geochemical studies, the rocks of Nodoushan area are of volcanic type and are composed of dacite, andesite and olivine-basalt, the pyroclastic type (crystalline tuff), and the microgranodioritic intrusive rocks. According to Zr/TiO2 versus SiO2...

Soltanabad metamorphic complex cropped out in the ophiolitic range of NE Sabzevar. There is a distinct gneissic body exposed in this complex which is associated with metabasite, serpentinite and adakitic intrusions. Quartz, albite, epidote, amphibole, garnet and chlorite are the rock forming minerals of gneissic samples. Based on abundances of light and dark minerals, different types of felsic,...

Understanding the performance and role of each formation in a petroleum play is crucial for the efficient and precise exploration and exploitation of trapped hydrocarbons in a sedimentary basin. The Lorestan basin is one of the most important hydrocarbon basins of Iran, and it includes various oil-prone potential source rocks and reservoir rocks. Previous geochemical studies of the basin were n...

Journal: :Frontiers in Earth Science 2022

The southwestern margin of the South China Craton preserves a Late Permian to Early Triassic sedimentary succession, provenance which helps constrain magmatic history and tectonic evolution Paleo-Tethyan Orogen. In this study, we present new detrital zircon U-Pb age, trace element, Hf isotope whole-rock geochemical composition analyses from Lower Qingtianbao Formation, distinguish clastic rocks...

Journal: :Human-Computer Interaction 1992
Abigail Sellen Gordon Kurtenbach William Buxton

The use of different kinds of feedback in preventing mode errors was investigated. Two experiments examined the frequency of mode errors in a text editing task where a mode error was defined as an attempt to issue navigation commands while in insert mode, or an attempt to insert text while in command mode. In Experiment 1 the effectiveness of kinesthetic versus visual feedback was compared in f...

2001
JOHN BRADY

The island of Syros consists largely of possibly-repeated sequences of glaucophane-bearing calcareous schists, mafic schists, dolomite marbles, and calcite marbles containing abundant aragonite pseudomorphs (Dixon, 1969; Hecht, 1984). Several discrete, fault-bounded packages of blueschist/eclogite-facies mafic rocks with minor serpentinite are also found on the island. Although the mafic rocks ...

2012
T. E. JOHNSON H. R. ROLLINSON

The central region of the mainland Lewisian gneiss complex of NW Scotland is a granulite-facies migmatite terrane.With the exception of ultramafic and rare calc-silicate rocks, all other lithologies partially melted during Neoarchaean, ultrahigh-temperature (Badcallian) metamorphism. The clearest evidence is preserved within large layered mafic^ultramafic bodies that exhibit macroscopic feature...

2012
Ronald I. Dorn

s with Program 39 (5): 11. Pearthree, P. A., and A. Young. 2006. Recent debris flows and floods in southern Arizona. Arizona Geology 36 (3): 1–6. Saarinen, T. F., V. R. Baker, R. Durrenberger, and T. Maddock. 1984. The Tucson, Arizona, flood of October 1983. Washington, DC: National Academy Press. Thiagarajan, N., and C. A. Lee. 2004. Trace-element evidence for the origin of desert varnish by d...

Journal: :Minerals 2021

Lacustrine mudrocks are composed of minerals and organic matter (OM). The origin preservation OM two controlling factors the hydrocarbon generation capacity mudrocks. It is a key method in source rock research to study deposition process from view sedimentary environment. Following this idea, reason for discrepancy production between northern southern part Dongpu Sag analyzed discussed. lacustr...

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