(aesa90A) 
| XIV.—The Igneous Geology of the Bathgate and Linlithgow Hills. By J. D. 
Falconer, M.A., B.Sc. Communicated by Professor James Grikre, LL.D., 
D.C.L., F.R.S. (With a Map.) 
(Read December 5, 1904. MS. received same date, Issued separately June 9, 1905.) 
CONTENTS. 
PAGE - PAGE: 
Previous Literature . : 3 : , : . 859 |The Fourth Volcanic Zone, or The Hilderston and 
Introduction . : ‘ ; ‘ : 2 Baie) | Hiltly Lavas . , é . 3862 
The Houston Coal . : 7 60 | The Index Limestone and the Bo’ ness ava ’ . 3863 
The First Volcanic Zone, or The Brox Eom, ish . 360 | The Fifth Volcanic Zone, or The Kipps and win 
The Second Volcanic Zone, or The Longmuir and brae Lavas 364 
Riccarton Lavas 361 The Dykeneuk and Castlecar y ‘Limestones : . 365 
The Third Volcanic Zone, or The Kirkton aya Hill- _ The Volcanic Necks ; : : : ‘ . 365 
house Lavas . : : : : . 362 | The Intrusive Rocks 5 5 : : : . 365 
The Hurlet Limestone . ; : . 362 General Results ‘ g : : : . . 366 
Previous LITERATURE. 
Geological Survey, sheet 32, 1859 ; revised ed, 1892, 
sheet 31, 1875. 
Geology of the Neighbourhood of Edinburgh ; Memoir of sheet 32, 1861; Memoir of sheet 31, 
1879, 
H. M. Cavett, ‘‘ The Geology of the Oil Shalefields of the Lothians,” Trans. Ed. Geol. Soc., 1901. 
“The Volcanic Rocks of Bo’ness,” Trans. Ed. Geol. Soc., 1880-1. 
in Trans, of Inst. of Mining Engineers, Glasgow Meeting, 1901. 
INTRODUCTION. 
The Bathgate and Linlithgow Hills occupy a well-defined belt of rising ground 
stretching 8.S.W.-N.N.E. from Bathgate to Bo’ness, and included in the marginal 
portions of sheets 31 and 32 of the 1-in. maps of the Ordnance and Geological Surveys. 
Throughout the range the steeper slopes face the west, while the eastern flanks are 
deeply buried in dritt. The glaciated contours are well seen from the east, and the 
sky-line is in several places deeply indented by glacial grooves. The physical 
geography is throughout intimately dependent upon the geological structure, but the 
latter is simplicity itself when contrasted with the complicated structure of the shale- 
fields to the east. Alternating zones of voleanic and sedimentary rocks strike parallel 
with the direction of elongation of the range from Bathgate to Bonnytoun Hill, and 
these are cut by a later connected series of dykes and sills of intrusive igneous rock. 
The latter, as a rule, are more resistant than the lavas, and form the more prominent 
features of the landscape, while the sedimentary intercalations may frequently be 
traced, even where no rock is visible, by the trough-like depressions which have been 
hollowed out of them between the zones of lava. 
TRANS. ROY. SOC. EDIN., VOL. XLI. PART IT. (NO. 14). 53 
