WebA dyke (also spelled dike) is a tabular body usually of igneous rock discordant to, and intrusive into, the bedding, schistosity, or other primary structure of its host rock . … WebA complete underground mine area collapse was caused by the disintegration of underground pillars supporting the tunnel roofs. The bodies of the mine workers that were killed in this accident were never recovered. ... Insufficient ventilation while mining through a dyke (rock in the coal seam) allowed methane to accumulate in the mine overnight ...

A systematic engineering geological evaluation of diabase

WebNote that the sill-versus-dyke designation is not determined simply by the orientation of the feature. A dyke can be horizontal and a sill can be vertical (if the bedding is vertical). A large dyke can be seen in Figure 3.21. A laccolith is a sill-like body that has expanded upward by deforming the overlying rock. WebA dyke is an intrusive, often parallel, body of igneous rock that cuts through the pre-existing rock strata. Depending on its size and form, when a dyke appears in a mining panel, it … in2streams login

Hardrock Mining Techniques Underground Mines Minings Method

WebThe formation of diabase has two requirements: 1) a basaltic magma source. 2) shallow emplacement and cooling in a relatively small subsurface structure such as a sill, dike, lopolith or laccolith. Explanations, … WebA dyke (also spelled dike) is a tabular body usually of igneous rock discordant to, and intrusive into, the bedding, schistosity, or other primary structure of its host rock ( Fig. 1 ). Depending on the attitude of the host rocks, the dyke may be vertical, horizontal, or inclined, but most are vertical or steeply inclined, and were so intruded. Webdike, also called dyke or geological dike, in geology, tabular or sheetlike igneous body that is often oriented vertically or steeply inclined to the … in2stone south africa