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The Quarterly journal of the Geological Society of London (1916) (14761993936)

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The Quarterly journal of the Geological Society of London (1916) (14761993936)

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Identifier: quarterlyjournal721916ge
Title: The Quarterly journal of the Geological Society of London
Year: 1845 (1840s)
Authors: Geological Society of London
Subjects: Geology
Publisher: London [etc.]
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library



Text Appearing Before Image:
ygdaloidal basalt (124) south of the Monapo River. Chief minerals : labradorite and augite in a base of dark-brown glass. X 20. (Seep. 250.) 4. Amygdale in amygdaloidal basalt (136) east of Murimatigri Quartel. Illustrating the replacement of heulandite (dark areas) by chal-cedony. X 20. (See p. 252.) 5. Hornblende-andesite (126) from a dyke penetrating amygdaloid south of the Monapo River. Chief minerals: andesine, hornblende, andbiotite, in a ground-mass consisting of the same minerals, togetherwith quartz and orthoclase. X 20. (See p. 256.) 6. Pyroxene-andesite (144) found near the Monapo River. Chief minerals : andesite. augite, and hypersthene, in a ground-mass ofhyalopilitic texture. X 20. (See p. 259.) . Discussion. Mr. F. P. Messell said that he had listened to the paperwith the greater interest, in that he had spent more than ten yearsin a neighbouring part of Africa. He was quite in accord with [November 23rd, 1917.] Quart. Journ. Geol. Soc. Vol. LXXll, Pl.XX. l.X 20 2.x- 20
Text Appearing After Image:
A.H. & G.S.S., PhotOmicrO. Bemrose. Collo^Derby VOLCANIC ROCKS of the DISTRICT of MOZAMBIQUE. Quart. Journ. Geol. Soc. Vol. LXXU, Pl.XXI.

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