THE QUARTERLY JOURNAL GEOLOGICAL SOCIETY OF...VOLUME CV, PART I (IssuED 19 November, 1949) LONDON: LONGMANS, GREEN & CO. LTD. 6 & 7 CLIFFORD STREET, W.t SOLD ALSO AT THE APARTMENTS

No. 417

THE

QUARTERLY JOURNAL OF THE

GEOLOGICAL

OF

SOCIETY

LONDON

EDITED BY

THE ASSISTANT SECRETARY

VOLUME C V , PART I

(IssuED 19 November, 1949)

LONDON:

L O N G M A N S , G R E E N & C O . LTD. 6 & 7 C L I F F O R D S T R E E T , W. t

SOLD ALSO AT THE APARTMENTS OF THE SOCIETY

BURLINGTON HOUSE~ PICCADILLY, W.I

Price Ten Shillings

GEOLOGICAL SOCIETY OF LONDON LIST OF THE OFFICERS AND COUNCIL

Elected 27 April, 1949

PRESIDENT Prof. Cecil Edgar Tilley, Ph.D.B.Se. F.R.S.

VIcE-PRESIDENTS

Prof. James Archibald Douglas, M.A. J George Martin Lees, M.C.D.F.C. Ph.D. D.Sc. I Prof. Leonard Hawkes, D.Sc.

David Williams, Ph.D. M.Sc. M.I.M.M.

Alfred Joseph Bull, M.Sc. Ph.D. Arthur James Butler, M.Sc. Frank Dixey, O.B.E.D.Sc. ProL James Archibald Douglas, M.A.D.Se. Kingsley Charles Dunham, D.Sc. Ph.D.

S.D.M.I.M.M. Peroy Evans, M.A. Prof. Leonard Hawkes, D.Sc. Prof. Sydney Ewart Hollingworth, M.A.

D.Se. Prof. Owen Thomas Jones, M.A.D.Sc.

M.Se. F.R.S. George Martin Lees, M.C.D.F.C. Ph.D.

F.R.S. Win fred Laurence Falkiner Nuttall ,

D.F.C.M.A. Ph.D. Kenneth Page Oakley, Ph.D.B.Se. James Phemister, M.A.D.Sc. F.R.S.E.

F.R.S. Prof. Herbert Harold Read, D.Se. F.R.S.

F.R.S.E.

SECRETARIES B.Eng. I Prof. Sydney Ewart Hollingworth, M.A.

I D.Se.

FOREm~ SECRETARr Prof. Owen Thomas Jones, M.A.D.Se. M.Sc. F.R.S.

TREASURER Percy Evans, M.A.

C O U N C I L Prof. William John Pugh, O.B.E.B.A.D.Se. Prof. Herbert Harold Read, D.Se.

F.R.S.F.R.S.E. Prof. Frederick William Shotton, M.B.E.

M.A. Walter Campbell Smith, C.B.E.M.C.T.D.

M.A. Se.D. Cyril James Stubblefield, D.Sc. Ph.D.

D.LC. F.R.S. Prof. Cecil Edgar Tilley, Ph.D. B.Se.

F.R.S. Prof. David Meredith Seares Watson,

M.Se. F.R.S. Errol Ivor White, D.Se. Ph.D.F.L.S. David Williams, Ph.D. M.Se. B.Eng.

M.I.M.M. Prof. Alan Wood, Ph.D.D.Sc.

LIBRARIAN Miss A. Barber

ASSISTANT SECRETARY AND EDITOR Arthur Greig

ASSISTANT LIBRARIAN Mrs. K. M. R. Husain

CLERK Miss N. P. Morris

DATES OF MEETINGS FOR THE SESSION 1 9 4 9 - 5 0

1949 1950 November 9, 23 March 15 December 14 April 5

1950 M a y 17 January 11 June 7, 21 February l, 22

Annual General Me~ting, April 26, 1950

DISCUSSION OF PAPERS IN THE QUAI~TE2Zr JOU2NAL

The Council announces tha t the pages of the Quarter/?/ Journal are open to the discussion of papers which hava already appeared in the J o u r n a l

While every Fellow may contribute to these discussions, they are intended primari ly for the benefit of Fellows (and particularly those resident overseas) who are unable to at- tend the meetings of the Society, and to afford such Fellows a closer contact with the Society's activities. Fellows are requested to comply with the following regulations when submitt ing their contributions to these discussions, since it will not be possible for the Secretaries to enter into correspond- ence about them or to submit proofs to the contributors.

a. Notice will be given in each par t of the Jou~ml (normally below the table of contents on the back page of the cover) of the latest date on which discussion of papers in tha t par t can be accepted for consideration. The date selected will be such t ha t all overseas Fellows will have reasonable t ime to contribute to the discussion.

b. Contributions to these discussions should not as a rule exceed 250 words (half a page of the Journal), and they will be subject to editing by the Secretaries. They should be typewrit ten, and the t i t le of the paper dis- cussed, and the name of its author, appear plainly a t the top of the typescript .

c. Discussion of the papers published in preceding volumes will normally appear in par t 2 of each volume.

d. Participation in the discussion a t a meeting, and the publication of his remarks in the Abstracts of Proceed- ings, will not preclude a Fellow from making a contri- bution to the subsequent Journal discussion.

The Council desires, in view of the present financial stringency and of the desirability of publishing in the Quarterly Journal all suitable papers with the least possible delay and at the lowest possible cost, to draw the attention of Fellows and other authors of papers to the necessity of reducing manuscripts and illustra- tions to the minimum, consistent with clear presentation of the subject-matter. Authors who have in view the submission of papers to the Society should apply for the printed ' Instructions to Authors ' which the Secretaries will forward, with such other information as may be necessary.

The Library at the Apar tments of the Society is open on week- days from 10 o'clock until 5 o'clock (Saturdays, 10 o'clock until 1 o'clock).

C O N T E N T S PAG~

1. F. R. S. HENSON, R. V. BROWNE and J. McGINTY. A synopsis of the stratigraphy and geological history of Cyprus. (Plates I-II) 1

2. O. T. JoNEs. The geology of the Llandovery district : Part II. The Northern Area. (Plate III) . 43

3. 0. T. JONES and W. J. PUGH. An early ardovician shore- line in Radnorshire, near Builth Wells. (Plates IV-VI) 65

4. H. H. READ. A contemplation of time in plutonism. (Presidential Address, 1949) 101

Written contributions to the discussions on papers published

in this part o~ the Quarterly Journal will be accepted up to

81 July, 1950. Instructions as to the form in which contribu-

tions should be submitted will be found on p./ii of the cover.

The Editor of the Q~r~rly Jo~rna~ is directed to make it known

to the Public that the authors alone are responsible for the facts and

opinions contained in their respective papers, and for the correctness

of their references.

PRINTED IN GR~AT BRITAIN BY RICHARD CLAY AND COMPANYj LTD., BUNG*Y," SUFFOLK.

No. 418

THE


GEOLOGICAL

OF

SOCIETY

LONDON

EDITED BY


VOLUME CV, PART 2

(ISSUED .0 9 MARCH, 195o )

LONDON:

LONGMANS, GREEN & CO. LTD.

6 & 7 CLIFFORD STREET, W.x

SOLD ALSO AT THE APARTMENTS OF TIIE SOCIETY

BURLINGTON HOUSE, PICCADILLY, W . I

Price Ten Shillings

GEOLOGICAL SOCIETY OF LONDON L I S T O F T H E O F F I C E R S A N D C O U N C I L


PRESIDENT Prof. Cecil Edgar Tilley, Ph.D.B.Se. F.R.S.

VICE-PRESIDENTS Prof. James Archibald Douglas, M.A. George Martin Lees, M.C.D.F.C. Ph.D.

Prof. Leonard Hawkes, D.Sc.

David Williams, M.I.M.M.

Alfred Joseph Bull, M.Sc. Ph.D. Arthur James Butler, O.B.E., M.Sc. Frank Dixey, O.B.E.D.Sc. Prof. James Archibald Douglas, M.A.D.Sc. Kingsley Charles Dunham, D.Se. Ph.D.

S.-.~ M.I.M.M. Percy Evans, M.A. Prof. Leonard Hawkes, D.Sc. Prof. Sydney Ewart Hollingworth, M.A.

D.Sc. Prof. Owen Thomas Jones, M.A.D.Sc.

M.Se. F.R.S. George Martin Lees, M.C.D.F.C. Ph.D.

F.R.S. Winfred Laurence Falkiner Nuttall,

D.F.C.M.A. Ph.D. Kenneth Page Oakley, Ph.D.B.Se. James Phemister, M.A.D.Sc. P.R.S.E.

F.R.S. Prof. Herbert Harold Read, D.Sc. F.R.S.

P.R.S.E.

SECRETARIES Ph.D. M.Sc. B.Eng. [ Prof. Sydney Ewart Hollingworth, M.A.

I D.Sc.

FOREIGN SECRETARY Prof. 0wen Thomas Jones, M.A.D.Sc. M.Se. F.R.S.

TREASURER Percy Evans, M.A.

C O U N C I L Prof. William John Pugh, O.B.E.B.A.D.Sc. Prof. Herbert Harold Read, D.Se.

F.R.S.F.R.S.E. Prof. Frederick Willlam Shotton, M.B.E.

M.A. ~Valter Campbell Smith, C.B.E.M.C.T.D.

M.A. Se.D. Cyril James Stubblefield, D.Se. Ph.D.

D.I.C.F.R.S. Prof. Cecil Edgar Tilley, Ph.D. B.Sc.

F.R.S. Prof. David Meredith Seares Watson,

M.Sc. F.R.S. Errol Ivor White, D.Sc. Ph.D.F.L.S. David Williams, Ph.D. M.Se. B.Eng.

M.I.M.M. Prof. Alan Wood, D.Sc. Ph.D.


ASSISTANT SECRETARY AND EDITOR Arthur Greig

ASSISTANT LIBRARIA~ Mrs. K. M. R. Husain


DATES OF M~.TnqGS POR THe. SSSSIO~ 1949-50

1950 March 15 April 5 may 17 June 7, 21

Annual General Meetln_.g, April 26, 1950

DISCUSSION OF PAPERS IN THE QUARTF.RLY ~OUR.¥AL

The Council announces tha t the pages of the Quarterly Journal are open to t h e discussion of papers which have already appeared in the Journal.

~Vhile every Fellow m a y contribute to these discussions, they are intended primari ly for the benefit of Fellows (and particularly those resident overseas) who are unable to at- tend the meetings of the Society, and to afford such Fellows a closer contact with the Society's activities. Fellows are requested to comply with the following regulations when submitt ing their contributions to these discussions, since it will not be possible for the Secretaries to enter into correspond- ence about them or to submit proofs to the contributors.

a. Notice will be given in each par t of the Journal (normally below the table of contents on the back page of the cover) of the latest date on which discussion of papers in tha t par t can be accepted for consideration. The date selected will be such tha t all overseas Fellows will have reasonable t ime to contribute to the discussion.

b. Contributions to these discussions should not as a rule exceed 250 words (half a page of the Journal), and they will be subject to editing by the Secretaries. They should be typewrit ten, and the tit le of the paper dis- cussed, and the name of its author, appear plainly at the top of the typescript .


d. Participation in the discussion a t a meeting, and the publication of his remarks in the Abstracts of Proceed- ings, will not preclude a Fellow from making a contri- bution to the subsequent Journal discussion.

The Council desires, in view of the present financial stringency and of the desirability o! publishing in the Quarterly Journal all suitable papers with the least possible delay and at the lowest possible cost, to draw the attention o! Fellows and other authors of papers to the necessity of reducing manuscripts and illustra- tions to the mi-~mum, consistent with clear presentation ot the subject-matter. Authors who have in view the submission of papers to the Society should apply for the printed' Instructions to Authors ' which the Secretaries will torward, with such other intormation as may be necessary.

The Library at the Apar tments of the Society is open on week. days from 10 o'clock until 5 o'clock (Saturdays, 10 o'clock until 1 o'clock).

C O N T E N T S P--AGm

5. G. Bo~D. The Lower Carboniferous reef limestones of Cracoe, Yorkshire. (Plate VII) . 157

6. K. W. GRAY. A tectonic window in south-western Iran. (Plates V I I I - X ) 189

7. W. E. LE GRos CLARK. Ne~V palaeontological evidence bearing on the evolution of the Hominoidea. (Fifth William Smith Lecture.) (Plates X I ' X V ) . 225

8. D. PARKINSO~. The s t ra t igraphy of the Dovedale area, Derbyshire and Staffordshire. (Plate XVI) 265

Proceedings of the Geological Society, Session 1948-9, including the Annual Repor t and Accounts and the President 's addresses to the Medallists and recipients of Funds . . i-liv


in this part ot the Quarterly Journal will be accepted up to

31 December, 1950. Instructions as to the form in which contribu-

tions should be submitted will be found on p. iii ot the cover.

The Editor of the Quarterly Journal is directed to make it known

to the Public tha t the authors alone are responsible for the facts and



PRINTED IN GREAT BRITAIN BY RICHARD CLAY AND COMPANYp LTD.j BUNGAYj SUFFOLK.

No. 419

THE


GEOLOGICAL

OF

SOCIETY

LONDON

EDITED BY

T H E A S S I S T A N T S E C R E T A R Y

VOLUME CV, PART 3

(IssuED 5 SEPTEMBER, 1950 )

LONDON:

L ' O N G M A N S , G R E E N & C O . LT'D.

6 & 7 C L I F F O R D S T R E E T , W.I


BURLINGTON HOUSE, PICCADILLY, W.I

Price Ten Shillings

GEOLOGICAL SOCIETY OF LO N D O N LIST OF THE OFFICERS AND COUNCIL


PRESIDENT

Prof. C. E. Tilley, F.R.S.

VIcE-PREsIDENTS

Prof. W. J. Pugh, O.B.E.D.Sc. I Prof. H. H. Read, F.R.S.F.R.S.E. ~ Dr. W. Campbell Smith, C.B.E.[M.C. ] Dr. C. J. Stubblefield, F.R.S.

SECRETARIES

Prof. D. Williams, M.Sc. M.I.M.M. [ Profi S. E. Hollingworth, M.A.D.Sc.

Mr. A. J. Butler, O.B.E. Dr. L. R. Cox, F.R.S. Mr. H. O. Dines, A.R.S.M. Dr. F. Dixey, O.B.E. Dr. K. C. Dunham, M.I.M.M. Mr. P. Evans, M.A. Prof. S. E. Hollingworth, M.A.D.Sc. Prof. O. T. Jones, F.R.S. Dr. J. F. Kirkaldy Dr. W. L. F. Nuttall , D.F.C.M.A. Dr. J. Phemister, F.R.S.E. Prof. W. J . Pugh, O.B.E.D.Sc.

FOREIGN SECRETARY

Prof. O. T. Jones, F.R.S.

TREASURER

M. P. Evans, M.A.

~ O U N C I L Prof. H. H. Read, F.R.S. :F.R.S.]~. Dr. K. S. Sandford, T.D.M.A. Prof. F. W. Shotton, M.B.E.M.A. Dr. W. Campbell Smith, C.B.E.M.C. Dr. C. J. Stubblefield, F.R.S. Prof. J . H. Taylor, M.A. Prof. C. E. Tilley, F.R.S. Prof. L. R. Wager, I~.R.S. Dr. E. I. White, F.L.S. Prof. D. Williams, M.Sc. M.I.M.M. Prof. A. Wood, Ph.D.D.Sc.

LIBRARIAN

Miss A. Barber

ASSISTAI~T SECRETARY AND EDITOR

Arthur Greig

ASSISTANT LIBRARIAN

Mrs. K. M. R. Husain CLERK

Miss N. P. Morris

STANDING PUBLICATION COMMITTEE

Prof. C. E. Tflley, President

Prof. S. E. Hollingworth]secretar ~ Prof. D. Williams S

Dr. L. R. Cox Dr. F. Dixey Dr. K. C. Dtmham Prof. H. H. Read Dr. K. S. Sandford

Mr. P. Evans, Treasurer

Dr. W. Campbell Smith Dr. C. J. Stubblefield Prof. L. R. Wager Dr. E. I. White

DISCUSSION OF PAPERS IN THE QUARTE2LY JOUR~rAL

The Council announces tha t the pages of the Quarterly Journal are open to the discussion of papers which have already appeared in the Journal.

While every Fellow m a y contribute to these discussions, they are intended primarily for the benefit of Fellows (and particularly those resident overseas) who are unable to at- tend the meetings of the Society, and to afford such Fellows a closer contact with the Society's activities. Fellows are requested to comply with the following regulations when submitting their contributions to these discussions, since i t will not be possible for the Secretaries to enter into correspond- ence about them or to submit proofs to the contributors.


b. Contributions to these discussions should not as a rule exceed 250 words (half a page of the Journal), and they will be subject to editing by the Secretaries. They should be typewrit ten, and the t i t le of the paper dis- cussed, and the name of its author, appear plainly a t the top of the typescript .


d. Participation in the discussion a t a meeting, and t h e publication of his remarks in the Abstract8 of Proceed. ings, will not preclude a Fellow from making a contri- bution to the subsequent Journal discussion.

The Council desires, in view of the present financial stringency and of the desirability of publishing in the Quarterly Journal all suitable papers with the least possible delay and at the lowest possible cost, to draw the attention of Fellows and other authors of papers to the necessity of reducing manuscripts and illustrao tions to the minimum, consistent with clear presentation of the subject-matter. Authors who have in view the submission of papers to the Society should apply for the printed ' Instructions to Authors ' which the Secretaries will forward, with such other information as may be necessary.

The Library a t the Apar tments of the Society is open on week- days from 10 o'clock until 5 o'clock (Saturdays, l0 o'clock until 1 o'clock).

C O N T E N T S

9. L. B. SMYT~. The Carboniferous System in North County Dublin. (Plates XVII-XIX)

P&Qm

295

10. F. W. WOOD. Recent information concerning the evaporites and the pre-Permian floor of South-East Durham. (Plate XX) 327

11. T. :BARNARD. Foraminifera from the Lower Lias of the Dorset Coast 347

12. F. G. H. BLYTH. The sheared porphyrite dykes of South Galloway. (Plates XXI & XXII) 393

Proceedings of the Geological Society, Session 1948-49: obituary notices of Fellows and Foreign Members deceased . lv-lxxxvii


in this part of the Quarterly Journal will be accepted up to

31 March, 1951. Instructions as to the form in which contributions

should be submitted will be found on p. ifi of the cover.





PRINTED IN GREAT BRITAIN BY I~ICHARD CLAY AND COMPANY~ LTD.p BUNGAY SUFFOLK,

No. 420

THE


GEOLOGICAL

OF

SOCIETY

LONDON

EDITED BY


VOLUME CV, PART 4

(IssUED 27 OCTOBER, ,95 ° )

LONDON:

L : O N G M A N S , G R E E N & C O . LTD. 6 & 7 C L I F F O R D S T R E E T , W.*


BURLINGTON HOUSE~ PICCADILLY, W . I

Price Ten Shillings

GEOLOGICAL SOCIETY OF LONDON LIST OF THE OFFICERS AND COUNCIL


PRESIDENT Prof. 0. T. Jones, F.R.S.

Prof. W. J . Pugh, O.B.E.D.Sc. Prof. H. H. Read, F.R.S.F.R.S.E.

Prof. D. Williams, M.Se. M.I.M.M.

Mr. A. J . Butler, O.B.E. Dr. L. R. Cox, F.R.S. Mr. H. G. Dines, A.R.S.M. Dr. F. Dixey, O.B.E. Dr. K. C. Dunham, 1K.I.I~LM. Mr. P. Evans, M.A. Prof. S. E. Hollingworth, M.A.D.Sc. Prof. 0. T. Jones, F.R.S. Dr. J. F. Kirkaldy Dr. W. L. F. Nuttall , D.F.C.M.A. Dr. J. Pbemister, F.R.S.E. Prof. W. J. Pugh, O.B.E.D.Sc.

VIcE-PRESIDENTS J Dr. W. Campbell Smith, C.B.E. A(.C.

Dr. C. J. Stubblefield, F.R.S.

SECRETARIES ] Prof. S. E. Hollingworth, M.A.D.Sc.

FOREIGN SECRETARY Prof. O. T. Jones, F.R.S.

TREASURER Mr. P. Evans, M.A.

C O U N C I L Prof. H. H. Read, F.R.S.F.R.S.E. Dr. K. S. Sandford, T.D.M.A. Prof. F. W. Shorten, M.B.E.M.A. Dr. W. Campbell Smith, C.B.E.M.C. Dr. C. J. Stubblefield, F.R.S. Prof. J . H. Taylor, M.A. Prof. C. E. Tilley, F.R.S. Prof. L. R. Wager, F.R.S. Dr. E. I. White, F.L.S. Prof. D. Williams, M.Se. M.I.M.M. Prof. A. Wood, Ph.D.D.Sc.


ASSISTANT SECRETLY AND EDITOR Arthur Greig

.ASSISTANT LIBRARIAN Mrs. K. M. R. Husain


STANDING PUBLICATION COMMITTEE

Prof. 0 . T. Jones, President

Prof. S. E. HoUingworthlsec tar/e8 Prof. D. Williams ] re

Dr. L. R. Cox Dr. F. Dixey Dr. K. C. Dunham Prof. H. H. Read Dr. K~S. Sandford

Mr. P. Evans, Tr~sur4r

Dr. W. Campbell Smith Dr. C. J . Stubblefield Prof. L. R. Wager Dr. E. I. White

DIscussioN OF PAPERS IN THE QU.aRTI~RLr JOURNAL

The Council announces tha t the pages of the Quarter/?/ Journal are open to the discussion of papers which have already appeared in the J o u r n a l

While every Fellow m a y contribute to these discussions, they are intended primarily for the benefit of Fellows (and particularly those resident overseas) who are unable to at- tend the meetings of the Society, and to afford such Fellows a closer contact with the Society's activities. Fellows are requested to comply with the following regulations when submitt ing their contributions to these discussions, since it will not be possible for the Secretaries to enter into correspond- ence about them or to submit proofs to the contributors.


b. Contributions to these discussions should not as a rule exceed 250 words (half a page of the Journal), and they will be subject to editing by the Secretaries. They should be typewrit ten, and the tit le of the paper dis- cussed, and the name of its author, appear plainly a t the top of the typescript.


d. Participation in the discussion a t 'a meeting, and the publication of his remarks in the Abstracts of Proceed. ings, will not preclude a Fellow from making a contri- bution to the subsequent Journal discussion.

The Council desires, in view of the present financial stringency and of the desirability of publishing in the Qu~rferly JournJ/all suitable papers with the least possible delay and at the lowest possible cost, to draw the attention of Fellows and other authors of papers to the necessity of reducing manuscripts and illustra- tions to the minimum, consistent with clear presentation of the subject-matter. Authors who have in view the submission of papers to the Society should apply tot the printed ' Instructions to Authors ' which the Secretaries will forward, with such other information as may be necessary.

The Library a t the Apar tments of the Society is open on week- days from 10 o'clock until 5 o'clock (Saturdays, 10 o'clock until 1 o'clock).

CONTENTS PAGE

13. W. PULFREY. Ijolitic rocks near Homa Bay, western Kenya. (Plate XXIII) 425

14. K. S. SANDFORD. Observations on the geology of the northern part of North-East Land (Spitsbergen). (Plates XXIV-XXVIII) 461

15, S. E. HOLLII~GWORTH, J. ALLISOI~ & H. GODWIll. Inter- glacial deposits from the Histon road, Cambridge. (Plate XXIX) 495

16. N. M. SHUKRI. The mineralogy of some Nile sediments. (Plate XXX) 511

Discussion of papers published in previous parts of the Quarterly Journal 535

[Title-page, table of contents and general index to Volume CV.]

Written contributions to the disoussions on papers published

in this part of the Quarterly Journal will be accepted up to

30 September, 1951. Instructions as to the form in which contributions

should be submitted will be found on p. ifi o! the cover.





PRINTED IN GREAT BRITAIN BY RICHARD CLAY AND COMPANYj LTD.p RUNGAY~ SUFFOLK.

Documents

THE QUARTERLY JOURNAL GEOLOGICAL SOCIETY OF...VOLUME CV, PART I (IssuED 19 November, 1949) LONDON: LONGMANS, GREEN & CO. LTD. 6 & 7 CLIFFORD STREET, W.t SOLD ALSO AT THE APARTMENTS