Geol Soc Research Articles

On the deformation of quartz containing bubbles : Knipe, R J; White, S H Q J Geol Soc, V135, N3, May 1978, P313–316

On the deformation of quartz containing bubbles : Knipe, R J; White, S H Q J Geol Soc, V135, N3, May 1978, P313–316

Continuous seismic reflection profiling of the deep basement, Hardeman county, Texas : Oliver, J; Dobrin, M; Kaufman, S Geol Soc Am Bull, V87, N11, Nov 1976, P1537–1546

Continuous seismic reflection profiling of the deep basement, Hardeman county, Texas : Oliver, J; Dobrin, M; Kaufman, S Geol Soc Am Bull, V87, N11, Nov 1976, P1537–1546

Analysis of joints in two monoclines in Israel : Reches, Z Geol Soc Am Bull, V87, N11, Nov 1976, P1654–1662

Analysis of joints in two monoclines in Israel : Reches, Z Geol Soc Am Bull, V87, N11, Nov 1976, P1654–1662

Example of application of geophysical techniques in determining geological environment of a coal deposit : Farah, A Geol. Survey Pakistan, Quetta, Pak 10F, 4R. Geol Soc. Amer, Bull. V84, N7, P2435–2444

Example of application of geophysical techniques in determining geological environment of a coal deposit : Farah, A Geol. Survey Pakistan, Quetta, Pak 10F, 4R. Geol Soc. Amer, Bull. V84, N7, P2435–2444

Results of a Systematic Survey, in 1878, of the Directions and Limits of Dispersion, Mode of Occurrence, and Relation to Drift-deposits of the Erratic Blocks or Boulders of the West of England and East of Wales, including a Revision of many Year's previous Obersvations

[Though long familiar with the erratic blocks or (as they are now more generally called) boulders of the west of England, and though I had written many papers on the subject, which appeared in the ‘Quart. Journ. Geol Soc.’ and ‘Geological Magazine,’ I lately saw the necessity for a systematic revision of what I had done, and more especially for an extension of my observations in a south and southeast direction, where they could be made to throw some clear light on the nature and sequence of glacial events. As no attempt has hitherto been made to treat the subject of erratics as a distinct branch of science, and as most readers might probably expect to find in a paper on the subject little more than an inventory of facts, it may be well to begin with a few remarks and definitions calculated to excite a scientific interest in the subsequent detailed statements.]

Further Observations on the Pre-Cambrian Rocks of Caernarvon

O n a former occasion (Quart. Journ. Geol Soc. vol. xxxiv. p. 137) I offered a sketch of the Pre-Cambrian rocks which form the long ridge stretching from Bangor to Caernarvon. The classification I adopted was in descending order:— i. The Volcanic series , consisting of volcanic fragmentary ejectamenta, agglomerates, ash-beds, and slates, occurring near Bangor, and referred to as Bangor beds . ii. The Felsitic series , consisting chiefly of quartz felsites, and probably also of volcanic origin, occurring near Llanddeiniolen and Dinorwig, and now referred to as the Dinorwig beds . iii. The Granitoid series , occurring near Caernarvon, and referred to as the Caernarvon beds . Endeavouring to correlate these groups with the divisions proposed by Dr. Hicks, I considered that the lowest group included less than the Dimetian, from which I proposed to cut off every thing above the brecciated bed below Bryngarn, on the left of the valley running down from St. David's to Porthclais. The upper group I divided into two. I do not know how far Dr. Hicks, in the modified classification recently offered to the British Association (Report, 1878, Trans. Sect. p. 536), adopts the above threefold classification. I considered that there was no unconformity visible between the groups, whether we accepted the brackets drawn by Dr. Hicks or those which I proposed. Since this paper was first sent in much additional information has been brought forward by Professor Bonney, Dr. Hicks, and Mr. Houghton, in communications made to the