His benchmark paper in 1927, which had been presented at the XIV International Geological Congress in Madrid in 1926, described the field relationships among a series of rocks comprising serpentinite, diabase
, and radiolarite.
These rocks are typical members of the ophiolitic melange, and they include: 13 samples corresponding to different types of metavolcanic rocks, some of them clearly submarine, 6 diabase
dikes and 8 different types of gabbros, diorites and granitoids.
On the azimuth distribution of Young's modulus E and shear modulus [mu] for diabase
from Niedzwiedzia Gora we can observed one maximum (Fig.
dyke swarms and related units in Canada and adjacent regions: Geological Survey of Canada, Map 2022A, scale 1:5,000,000.
In particular, the medium and hard diabase
ores were virtually identical, and therefore represented about 75% of the orebody
This show does not have any exhibits; however, it does have dealers who specialize in minerals from the New Jersey traprocks (zeolite-bearing basalt and diabase
By 2218 Ma, the age of the Nipissing diabase
sills in the Huronian Supergroup (Corfu and Andrews, 1986; Krogh et al.
The pluton is cut by lamprophyre and alkaline olivine diabase
dykes of early Jurassic age (Cant et al.
5 inch top hole on September 16 using an open hole percussion compressed air hammer exploration rig provided by local Tasmanian company, Spaulding Drillers, to penetrate the hard diabase
(dolerite) Domal Cap rock.
However, we have also found zeolites in various granitic pegmatites, nepheline syenitic pegmatites, fractured diabase
dikes, calc-silicate gneisses and fenites in the same area, and in agpaitic rocks and calc-silicate skarns in the CMBBZ.
The Proterozoic record relies heavily on diabase
dyke swarms and sills (Fig.
That unit extends into the adjacent map area of Abbott (1986), who described it as complex mixture of mainly gabbro, diabase
, and granodiorite, intruded by younger granite.
Crawlmasters require only one operator, who controls all plant functions by radio remote control, and have been proven under tough crushing conditions involving granite, gneiss, and diabase
The mineralization in hole 47A was partially cut off by a diabase
Not shown on the map are numerous diabase
dikes that postdate the granite and intrude all other rock units.