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1
Geological Survey Professional Paper
Limburgite porphyry from the Catastrophe mine contains inclusions of granite.
These reacted with the magma and caused calcic plagioclase, rather than
analcite, to form in the groundmass of the porphyry in narrow zones surrounding
the ...
2
Professional Paper - United States Geological Survey
ThiH groundmass, though obscured by calcite, apparently never contained
plagiochiHe, and the rock is probably to be lassed as a limburgite. The basaltic
dike shown on the 500-foot level (Pl. XXVIII) just east of the Burns : haft is also
probably ...
Geological Survey (U.S.), 1906
3
U.S. Geological Survey Professional Paper
In the bed of Hanapepe River below the falls, about 7 miles from the sea, there
are bowlders of typical dense aphanitic limburgite, associated with the usual
predominant olivine-plagioclase basalts. There, as elsewhere, the actual
quantitative ...
4
Lavas of Hawaii and their relations
LIMBURGITE. In the bed of Hanapepe River below the falls, about 7 miles from
the sea, there are bowlders of typical dense aphanitic limburgite, associated with
the usual predominant olivine-plagioclase basalts. There, as elsewhere, the ...
5
Volcanoes of North America: United States and Canada
The buttes are restricted to a circular area -60 km wide. maars are monchiquite
and limburgite tuffs; both contain augite (most abundant), olivine. and biotite
phenocrysts. These rocks are distinguished from normal alkali basalt of the
southern ...
Charles A. Wood, Jurgen Kienle (ed), 1992
6
Tectonic Studies of Asia and the Pacific Rim: A Tribute to ...
The analyzed picrite (sample 2-29) and limburgite (sample 2-83) are almost
indistinguishable chemically and each contains -14 wt% MgO; however, the La/
Yb and La/Sm ratios are higher in the limburgite (Table 1). The upper part of the
Mm,, ...
Benjamin Markham Page, Wallace Gary Ernst, Robert Griffin Coleman, 2000
7
New Zealand Journal of Geology and Geophysics
The limburgite samples dated have numerous small phenocrysts of fresh olivine
and tiny augite prisms and opaque iron oxide grains set in pale-brown glass.
Minor zeolite and pale green chlorite are also present. Whl (R3195 TR) 40-lm.y ...
8
Intraplate Volcanism in Eastern Australia and New Zealand
... 'limburgite' and 'woodendite' range have less than 50-percent SiOj, form only
small domes and restricted lava flows (Melbourne Hill, Western Hill, the Kings
Quarry basanite near Hesket, Racecourse Hill at Woodend, and a 'limburgite'
south ...
R. Wally Johnson, Jan Knutson, Stuart Ross Taylor, 1989
9
Geological Survey Professional Paper
Farther east porphyries are uncommon and occur chiefly in short dikes too small
to be shown on plate 2, but limburgite dikes, only one of which is shown on plate
2, are found in an east-northeasterly zone extending from Comforter Mountain to
...
Geological Survey (U.S.), 1950
10
New Zealand Journal of Geology and Geophysics
Keywords nephelinite; limburgite; intrusion; chemical analyses; K/Ar dating;
Oligocène; Canterbury INTRODUCTION During the course of field investigations
in Central Canterbury, a new occurrence of "basic" igneous rock was discovered
in ...
