نتایج جستجو برای: diabase

تعداد نتایج: 134  

2005
Garry D. Karner Donna J. Shillington

High core recovery at Ocean Drilling Program (ODP) Leg 210, Site 1276, provided a high-resolution porosity-depth relationship and an equally impressive age-depth model based on first and last occurrences of microfossils. Site 1276 was drilled over transitional crust in the Newfoundland nonvolcanic margin, offshore Canada, between known continental crust on the west and apparent oceanic crust on...

2009
Tarun R. Naik Rudolph N. Kraus Rakesh Kumar Tarun R Naik

The coefficient of thermal expansion (CTE) of a typical concrete-paving mixtures made with six different types of coarse aggregates, obtained from fifteen different sources in Wisconsin, was determined. These aggregates belonged to the basic class of glacial gravel, quartzite, granite, diabase, basalt, and dolomite. A total of fifteen different concrete mixtures were used in this study. Triplic...

2004
J.-G. SCHILLING

Rare earth abundances were determined by neutron activation in twenty Hawaiian lavas and one diabase of known chemical and mineralogical compositions. These results demonstrate a systematic relationship between the absolute or relative rare earth abundances and the petroehemistry of these rocks. Three distinct lava groups are recognized. These correspond to: (1) tholeiites, (2) alkali series, (...

Journal: :Quarterly Journal of the Geological Society 1899

Journal: :Bulletin Mineralogie Petrologie 2023

Classical locality Vyskočilka in the Barrandian Basin displays a well-exposed section of black Silurian shales penetrated by ca. 10-m thick diabase sill. We examined petrographic character and mineral composition intrusive body enclosing shales, as well hydrothermal veins cutting rocks. The is rock with basic affinity (paleobasaltoid), which was strongly influenced post-magmatic alterations inc...

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