CLAY  RESOURCES  OF  NORTHEASTERN  KENTUCKY.      413 
Other  clays  in  the  Pottsville  formation. —There  are  other  clay  horizons  below  the  Homewood 
mdstone  which,  however,  have  not  come  into  prominence.  In  the  eastern  part  of  the  city 
f  Ashland  the  O'Kelly  Fire  Brick  Company  has  opened  up  during  the  past  summer  the  coal 
No.  4)  directly  below  the  Homewood  sandstone.     This  seam  has  the  following  section : 
Section  of  coal  No.  4  in  the  eastern  part  of  Ashland,  Ey. 
Roof,  massive  sandstone.  Ft,        jn- 
Coal 18-19 
Fire  clay 10 
Coal 8_  9 
Fire  clay 2|-4 
The  company  is  now  utilizing  the  clay  associated  with  the  coal  at  its  plant  in  town  with 
atisfactory  results.  The  same  seam  with  a  very  similar  section  «  also  occurs  on  Catletts 
Ireek.  Should  the  experience  of  the  O'Kelly  Company  prove  satisfactory,  there  is  no 
ason  why  the  bed  on  Catletts  Creek  should  not  be  developed.  At  other  points  throughout 
he  area  this  has  proved  a  prominent  clay  horizon  worthy  of  careful  prospecting  by  those 
iterested  in  the  development  of  the  clay  resources  of  this  area. 
In  the  hills  about  the  head  of  Johns  and  Fields  branches,  Carter  County,  between  2  and 
miles  northwest  of  Willard,  a  few  prospect  holes  have  been  made  on  a  bed  of  clay  lying 
few  feet  below  the  Homewood  sandstone,  and  thus  similar  in  position  to  that  just  men- 
ioned  as  occurring  in  the  eastern  part  of  Ashland  and  on  Catletts  Creek.  The  openings 
ave  not  been  driven  in  far  enough  to  give  an  accurate  idea  of  the  quality,  and  the  clay 
een  on  the  outcrop  is  rather  sandy,  as  would  naturally  result  from  the  wash  from  the 
aassive  sandstone  overlying  it.  The  appearance  and  thickness  of  this  bed  warrant  fur- 
her  prospecting.  Other  clay  beds  occur  in  this  formation,  generally  associated  with  coal. 
ls  a  rule  these  are  too  small  to  have  commercial  value. 
ALLEGHENY    FORMATION. 
Clay  associated  with  the  "Ferriferous  limestone.'1'' — As  in  the  formation  below  the  Alle- 
heny,  so  also  in  this  formation  one  clay  horizon  stands  preeminently  above  the  rest,  as 
egards  quality,  distribution,  and  thickness.  This  is  the  fire  clay  occurring  near  the  horizon 
\i  the  "Ferriferous  limestone"  and  lying  from  10  to  40  feet  above  the  Homewood  sand- 
stone. The  following  sections,  one  measured  by  George  H.  Ashley  1  mile  west  of  Ashland, 
,he  other  by  the  writer  at  "Willard,  give  an  idea  of  the  associated  beds. 
Section  of  fire  clay  1  mile  west  of  Ashland. 
Ft.    in. 
Light-brown  sandstone 20+ 
Coal 2+ 
Light-drab  clay 2 
Light-brown  clay 6 
Dark-drab  clay 1    6 
Drab  clay,  with  scattered  iron-ore  concretions  ("Ferriferous  limestone" 
horizon) 2 
Light-drab  sandy  shale 1-  2 
Drab  shale 0-8 
Dark-drab  to  black  clay,  grading  into  light  drab  at  middle 1        6 
Drab  clay 3 
Flint  clay 1-4 
Drab  clay 3        6 
Dark-drab  clay,  almost  black 3 
Drab  clay 8 
Four  feet  from  the  bottom  of  the  lowest  layer  is  about  1  foot  of  light-drab  flint  clay, 
imilar  to  the  best  of  the  Pennsylvania  flint  clays. 
a  See  p.  263  of  this  bulletin. 
Bull.  285—06- 27 
