﻿24 
  

  

  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  The 
  foundation 
  rocks 
  of 
  the 
  whole 
  province 
  comprise 
  various 
  

   formations 
  of 
  Precambric, 
  Cambric, 
  and 
  Ordovicic 
  ages, 
  while 
  in 
  

   a 
  few 
  places 
  mere 
  surface 
  layers 
  of 
  Siluric, 
  Devonic, 
  and 
  Mesozoic 
  

   strata 
  occur 
  (see 
  geologic 
  map, 
  figure 
  i). 
  All 
  the 
  rocks, 
  except 
  

   these 
  few 
  younger 
  surface 
  layers, 
  are 
  highly 
  folded, 
  which 
  consti- 
  

   tutes 
  the 
  most 
  characteristic 
  structural 
  feature 
  of 
  the 
  whole 
  prov- 
  

   ince. 
  In 
  fact, 
  as 
  is 
  hereafter 
  shown 
  (see 
  chapter 
  4), 
  there 
  are 
  here 
  

   exposed 
  the 
  roots 
  or 
  remnants 
  of 
  a 
  portion 
  of 
  the 
  great 
  and 
  very 
  

   ancient 
  Taconic 
  mountain 
  range 
  which 
  at 
  one 
  time 
  occupied 
  this 
  

  

  Helderberg 
  Mountains 
  

  

  ^Quaternary 
  - 
  sands 
  $ 
  c/ays 
  

   Det/on/c 
  —Cots/ri// 
  sandstone 
  

  

  I 
  Devonic 
  — 
  Onondaqaf 
  Homi/ton 
  

   \ 
  //'me 
  stone 
  and 
  sna/e. 
  

  

  ySi/vr/c—Sn/'ho 
  //mestone. 
  

   \mt$ 
  /uric 
  — 
  Shawn/punk 
  oarykmenifc 
  

   b— 
  Hudson 
  sna/e 
  ors/ote 
  

  

  Fig. 
  8 
  Section 
  from 
  southwest 
  to 
  northeast 
  through 
  Albany 
  county 
  and 
  

   showing 
  the 
  Taconic 
  folds 
  near 
  the 
  Hudson. 
  

  

  Fig. 
  9 
  Section 
  from 
  northwest 
  to 
  southeast 
  across 
  Ulster 
  county 
  and 
  

   passing 
  through 
  Slide 
  mountain 
  and 
  Highland 
  village. 
  Taconic 
  and 
  Appa- 
  

   lachian 
  folds 
  both 
  sides, 
  as 
  well 
  as 
  the 
  structure 
  of 
  Shawangunk 
  mountain. 
  

  

  Fig. 
  10 
  More 
  detailed 
  section 
  through 
  cement 
  district 
  at 
  Whiteport, 
  Ulster 
  

   county. 
  Both 
  Taconic 
  and 
  Appalachian 
  folds 
  are 
  well 
  exhibited. 
  

  

  These 
  sections 
  all 
  modified 
  after 
  Darton, 
  N. 
  Y. 
  State 
  Mus. 
  Rep't 
  47, 
  1894, 
  PP- 
  430, 
  490, 
  532 
  

  

  region. 
  Thus 
  from 
  the 
  geologic 
  standpoint, 
  the 
  term 
  Taconic 
  

   province 
  would 
  be 
  appropriate. 
  All 
  along 
  the 
  border 
  of 
  the 
  prov- 
  

   ince, 
  as 
  well 
  as 
  throughout 
  the 
  Hudson 
  Highlands, 
  the 
  rocks 
  are 
  

   rather 
  severely 
  metamorphosed. 
  

  

  Highlands-of-the-Hudson. 
  The 
  Hudson 
  Highlands 
  extend 
  

   across 
  the 
  Hudson 
  valley 
  in 
  a 
  northeast-southwest 
  direction, 
  and 
  

   cover 
  southern 
  Orange 
  county 
  and 
  northern 
  Rockland 
  county, 
  

   and 
  the 
  region 
  from 
  southern 
  Dutchess 
  southward 
  across 
  Putnam 
  

  

  