Results 161 to 170 of about 858 (191)

VI.—The Picrite of Foel lwyd, Carnarvonshire

Geological Magazine, 1913
During a short holiday to North Wales in Whit-week, 1910, I was investigating the igneous rocks to the south of Llanfairfechan, more particularly the intrusive greenstones of the Geological Survey map. Since the publication of this map, over fifty years ago, several districts within it have been investigated in greater detail, especially as to the ...
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III.—Picrite from the Ampwihi River, Mozambique

Geological Magazine, 1917
Almost due west of Mozambique Island, at a distance of about forty-two miles from the sea, the military road from Mosuril to Nampula crosses the Ampwihi River, an important tributary of the Monapo. During the dry season the stream is reduced to a string of stagnant pools, separated by long reaches of sand and gravel that here and there are interrupted ...
Arthur Holmes, H. F. Harwood
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Rheology of subliquidus magmas: 1. Picritic compositions

Journal of Geophysical Research: Solid Earth, 1988
The relationship between the rheology and phase equilibria of a picritic basalt from Kilauea Iki has been investigated at 1 atm along the QFM buffer. Between 1270° and 1180°C olivine and minor spinel are the only liquidus phases, and the melt volume decreases from 85 to 74 vol %.
F. J. Ryerson, H. C. Weed, A. J. Piwinskii   +2 more
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New petrographical data on the Shiant Isles picrite

Mineralogical Magazine and Journal of the Mineralogical Society, 1965
SummaryA recent bore-hole through the Shiant Isles picrite established the existence of 45 feet more of the picritic facies, and also the lower margin of the silt, at a point almost vertically below the exposed 35 feet previously investigated. In the light of new field and laboratory information the pieritic facies is briefly re-examined and its origin
H. I. Drever, R. Johnston
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The Dioritic Picrite of White Hause and Great Cockup

Quarterly Journal of the Geological Society of London, 1892
This rock is exposed on both sides of Hause Gill, which separates White Hause from Great Cockup; the exposure on the former measures from 12 to 15 yards square, that on the latter mountain being somewhat smaller. The two masses are about mile apart, and are doubtless connected beneath ...
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A Note on the Field Relations of the Shiant Isles' Picrite

Geological Magazine, 1953
AbstractThe picrite of the Garbh Eilean–Eilean an Tighe sill occurs at a number of points not previously recorded. Its junction with the overlying picrodolerite is not gradational and it does not maintain a uniform level in the sill.
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picrite, n.

2023
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Genesis of High K Picrites in Eastern Kamchatka

Journal of Volcanology and Seismology, 2022
Z. G. Badredinov, B. A. Markovsky, I. A. Tararin   +2 more
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PGE geochemistry of the Macquarie Island basalts and picrites

Goldschmidt2022 abstracts, 2022
Gyuchan Park, Jung-Woo Park, Vadim Kamenetsky   +2 more
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Geochemistry of the Yumen Picrites-Basalts From the Emeishan Large Igneous Province: Implications for Their Mantle Source, PGE Behaviors, and Petrogenesis

Lithos, 2021
Hong Zhong, Zhong-Jie Bai, Wei-Guang Zhu
exaly