﻿Geology. 
  569 
  

  

  A. 
  W. 
  Rogers, 
  the 
  Director 
  of 
  the 
  Survey, 
  has 
  succeeded 
  in 
  

   determining 
  the 
  order 
  of 
  succession 
  in 
  the 
  Nieuwerust, 
  Malmes- 
  

   bury, 
  and 
  Ibiquas 
  series, 
  and 
  correlating 
  them 
  with 
  the 
  Nama 
  

   formation 
  of 
  German 
  Southwest 
  Africa. 
  The 
  existence 
  of 
  gneisses 
  

   of 
  both 
  pre-Nama 
  andpost-Malmesbury 
  ages 
  has 
  been 
  established. 
  

   Dr. 
  Rogers 
  does 
  not 
  accept 
  the 
  view 
  of 
  Hochstetter 
  and 
  others 
  

   that 
  the 
  straightness 
  of 
  the 
  west 
  coast 
  is 
  due 
  to 
  faulting 
  but 
  

   believes 
  rather 
  that 
  the 
  intersection 
  of 
  the 
  sea 
  with 
  a 
  bent 
  surface 
  

   produced 
  after 
  peneplanation 
  explains 
  the 
  linear 
  quality. 
  Detailed 
  

   descriptions 
  of 
  the 
  Nieuwerust 
  Series, 
  consisting 
  of 
  arkose, 
  quartz- 
  

   ite 
  and 
  shale 
  ; 
  the 
  Malmesbury 
  Series, 
  chiefly 
  slates, 
  and 
  of 
  the 
  

   Ibiquas 
  Series, 
  conglomerates 
  in 
  part, 
  are 
  given. 
  The 
  area 
  is 
  

   intricately 
  faulted 
  and 
  cut 
  by 
  quartz 
  porphyry 
  and 
  monchiquite 
  

   dikes. 
  An 
  interesting 
  feature 
  of 
  the 
  report 
  is 
  a 
  discussion 
  of 
  six- 
  

   teen 
  nepheline-basalt 
  pipes 
  of 
  a 
  character 
  new 
  to 
  science. 
  Dr. 
  

   duToit's 
  work 
  in 
  the 
  Transkei 
  has 
  brought 
  to 
  light 
  an 
  important 
  

   monoclinal 
  flexure 
  dipping 
  into 
  the 
  Indian 
  ocean 
  and 
  has 
  made 
  

   possible 
  the 
  restoration 
  of 
  an 
  ancient 
  coastal 
  plateau 
  about 
  fifty 
  

   miles 
  wide. 
  The 
  present 
  coast 
  line 
  is 
  shown 
  to 
  be 
  sinking. 
  A 
  

   fortunate 
  discovery 
  of 
  fossils 
  places 
  the 
  Umgazana 
  beds 
  in 
  the 
  

   Upper 
  Cretaceous 
  and 
  allows 
  correlations 
  heretofore 
  impossible. 
  

   Dr. 
  duToit 
  also 
  describes 
  a 
  group 
  of 
  remarkable 
  volcanic 
  necks 
  

   filled 
  with 
  light 
  yellow 
  tuft 
  of 
  the 
  Drakensberg 
  type. 
  Like 
  some 
  

   other 
  reports 
  of 
  the 
  Cape 
  of 
  Good 
  Hope 
  Geological 
  Commission, 
  

   the 
  present 
  volume 
  is 
  decreased 
  in 
  value 
  by 
  lack 
  of 
  suitable 
  maps 
  

   and 
  illustrations. 
  h. 
  e. 
  g. 
  

  

  3. 
  Sixth 
  Annual 
  Report 
  {New 
  Series) 
  of 
  the 
  Neio 
  Zealand 
  

   Geological 
  Survey, 
  Session 
  II, 
  1912. 
  Pp. 
  1 
  1 
  ; 
  map 
  bound 
  with 
  

   report. 
  — 
  The 
  personnel 
  of 
  the 
  New 
  Zealand 
  Survey 
  is 
  now 
  as 
  fol- 
  

   lows 
  : 
  Percy 
  Gates 
  Morgan, 
  M.A., 
  Director 
  ; 
  John 
  Henderson, 
  

   M.A., 
  D.Sc, 
  Mining 
  Geologist 
  ; 
  James 
  Allan 
  Thomson, 
  MA., 
  

   D.Sc, 
  Paleontologist 
  ; 
  John 
  Arthur 
  Bartrum, 
  M.Sc, 
  Assistant 
  

   Geologist 
  ; 
  George 
  Edward 
  Harris, 
  Draughtsman 
  ; 
  Henry 
  Saxon 
  

   Whitehorn, 
  Assistant 
  Topographer. 
  

  

  Field 
  work 
  for 
  1912 
  included 
  surveys 
  of 
  the 
  Bullor-Mokihinui 
  

   and 
  the 
  Aroha 
  subdivisions. 
  The 
  paleontologist 
  with 
  assistants 
  

   is 
  actively 
  engaged 
  in 
  describing 
  the 
  fossils 
  stored 
  in 
  the 
  Museum 
  ; 
  

   120,000 
  specimens 
  from 
  847 
  localities 
  obtained 
  by 
  geologists 
  of 
  

   the 
  old 
  Survey, 
  in 
  addition 
  to 
  other 
  collections, 
  remain 
  to 
  be 
  

   described. 
  Dr. 
  Thomson 
  is 
  confining 
  his 
  attention 
  to 
  Cretaceous 
  

   and 
  Tertiary 
  material, 
  and 
  has 
  placed 
  the 
  fossils 
  from 
  other 
  

   strata 
  in 
  the 
  hands 
  of 
  outside 
  specialists. 
  h. 
  e. 
  g. 
  

  

  4. 
  Geological 
  Survey 
  of 
  Western 
  Australia, 
  1912. 
  — 
  The 
  fol- 
  

   lowing 
  publications 
  have 
  been 
  received 
  : 
  

  

  (1) 
  Bulletin 
  No. 
  42, 
  Contributions 
  to 
  the 
  Study 
  of 
  the 
  Geology 
  

   and 
  Ore 
  Deposits 
  of 
  Kalgoorlie, 
  East 
  Coolgardie 
  Goldfield. 
  

   Part 
  I, 
  by 
  E. 
  S. 
  Simpson 
  and 
  C. 
  G. 
  Gibson. 
  Pp. 
  198 
  ; 
  2 
  maps, 
  50 
  

   figs. 
  Chapter 
  I 
  by 
  Mr. 
  Gibson 
  includes 
  an 
  outline 
  of 
  the 
  general 
  

   geology 
  and 
  a 
  detailed 
  petrographic 
  discussion 
  of 
  greenstones, 
  

   quartz 
  and 
  feldspar 
  porphyries 
  and 
  peridotites. 
  The 
  composition 
  

  

  