PA11T 3.] 
Mecllicott, S/iapur Coal-field. 
83 
Site for boring. 
The high road (it only deserves the title from the causeways and culverts constructed 
across the watercourses) passes through the Suki area, which, as 
has been shown, offers the least promise of coal. For any 
really effective roadway from the north, Sonada is much the nearest and most accessible point 
of the coal-measures. There is no serious obstruction to overcome between it and Dliar on 
the present road. For this reason it is here that a first attempt should be made to prove 
the ground for a workable coal, although the apparent prospect of success may be less pro¬ 
mising than in the Machna or Dolari area. In choosing an actual site for boring one might 
at first be inclined to avoid the visibly barren ground at the top of the measures at the 
bend of the river just above the village. Yet, as none of the outcrops are very tempting, 
the object should be to test the whole measures a little to the deep of the outcrop. With 
this in view I should take up a position immediate!}’ to the north of Sonada village. When 
there is such uncertainty as to the thickness of the measures it is difficult to assign a depth 
for a boring. If 400 feet at Sonada did not clear all the measures, the remainder could bo 
tested by another shallow boring half a mile to the south. 
Teap. 
The few trap dikes that occur are not likely to prove very troublesome. The only one 
seen in the Sonada area is close to the Talchir boundary. There are none in or near the 
Suki section. None is seen either in the Machna. A ten-yard dike stops just short 
of its left bank, at the mouth of the little stream south-south-west of Douri. It is very 
remarkable for its finely developed prismoidal structure. Two small dikes cut across the 
Tawa, just below the mouth of the Machna. A boring here might be placed between 
the two, or below the lower one. Several fine dikes cross the Tawa within this area to 
south. In the Dolari area a strong dike crosses the river immediately above the outcrop 
of the coal seams. 
The general habit of the trap dikes is to coincide approximately with the lines of 
flexure, and therefore with the local strike of the strata. The great dike at Kamti and that 
north of the Tawa at Ivosmeri cut across the strike and parallel to the Machna fault. 
There are some good instances in this field of the tendency of intrusive trap to run out in 
sheets at the contact of thick clay bands with strong overlying sandstone. The broad run 
of trap along the north bank of the Tawa in the Ivosmeri reach is a good case of this, as 
already mentioned. There is also a very good example of it in the Talchirs on the I’hopas : 
a band of hard sandstone is seen broken or tossed about upon an underflow of trap. I 
am disposed to think that the cotemporaneous trap said to occur in the Talchirs elsewhere 
is only an exhibition of this phenomenon, 
I have seen nothing to disturb the opinion I have already expressed that all the trap in 
these formations is of the age of the Deccan rock. There is excellent evidence within the 
range of our map of the advanced denudation of these formations at the time of its outflow. 
The trap forming the summit of Jdingarh is fully 800 feet thick, the top scarp of Motur 
rocks having an elevation of about 2,000 feet. At a distance of little over two miles, in the 
gorge west of Teter, the trap is at the lowest level. The fact of there being no infratrap- 
pean deposits in such a position only shows that even then this must have been an upland 
gorge. There is one mode of occurrence of the trap that suggests at first sight an opposite 
conclusion regarding the periods ol denudation. The best case in point I noticed this season, 
about twelve miles to the east-north-east of Dolari: a very strong dike, traced for several miles 
along the low ground, cuts straight up the west face of Ivilandeo hill and forms a ridge on 
the summit. It is certain that when this occurred the whole ol the present low ground was 
