GEOLOGY AND PALEONTOLOGY OF CANAL ZONE


No. USGs used in tenazoss this No. report


Field No.


 Description of locality



MIDDLE PART OF GATUN FORMATION,
 WESTERN AREA-continued


162





162a 163






164 165 166 167 168 169 170




170a


No. USGS
used in Cenozoic Field this No. No. report





 171 _-_ --- -- -172 6035 ---_17 3 .- __ -


8396 -- Lower trail on west side of Rio Clagres,
 a msile (1.6 kilometers) north [westnorthwest] of Gatun Dam, Canal Zone. A. A. Olsson, 1918. Location approximate.
8359 Lower trail on west side of Rio Chagres
 northwest of Gatun Dam, Canal Zone. D. D. Condit and A. A.
 Olsson, 1918. [Probably near locality 162.] Not plotted.
8394 Trail on east side of Rio Chagres,
 halfway between Gatun Dam and mouth of river, station 2, Canal Zone. A. A. Olsson, 1918. Location approximate. Represents upper
 part of formation.
8391 -- -Bluff on west side of Gatun Lake,
 Canal Zone. D. D. Conduit, 1918.
 Location indefinite; not plotted. 8372 Headwaters of Rio Pina, station 14b,
 Canal Zone. Middle Gatun. A. A.
 Olsson, 1918. Location approximate.
8357 Pifa triangulation station region, station 6, Canal Zone. Base of upper Gatun. D. F. MacDonald and A.
 A. Olsson, 1918. Location approximate.
8374 --- Tick Creek, station 56B, Canal Zone.
 Top of middle Gatun, oyster bed.
 A. A. Olsson, 1918. Location approximate.
8361 Tick Creek, station 27, Canal Zone.
 Base of sipper Gatun. A. A. Olsson, 1918. [Downstream from locality
 167.] Not plotted.
8360 -- West of Gatun Lake, Tick Camp sheet,
 station 6, Canal Zone. A. A.
 Olsson, 1918. [Probably near locality 167.] Location indefinite; not
 plotted.
8368 Headwaters of Quebrada Cana [Rio
 Cano Quebrado], station 4a, Panamd.
 Base of upper Gatin. A. A. Olsson,
 1918. Location approximate.
8411 .-___- Headquarters of Quebrada Cafla [Rio
 Cano Quebrado], station 2 plus 50, Panamd. A. A. Olsson, 1918. Near
 locality 170. Not plotted.


175 176



176a 177


2688 2690


8410 8358



8409


48









29
49


 Description of locality



 UPPER PART OF GATUN FORMATION,
 EASTERN AREA

_ Stanford University locality 2707.
 Drainage ditch 500 feet (150 meters) west of French Canal, Canal Zone.
 Latitude 9 17' N., plus 3,500 feet (1,065 meters), longitude 79 55' W., plus 4,000 feet (1,220 meters). T. F.
 Thompson, 1943.
- Mindi Hill cut, near bottom of canal,
 Canal Zone. D. F. MacDonald and T. W. Vaughan, 1911 (MacDonald, 1919, p. 544, pl. 154). A submerged
 locality.
 Stanford University locality 2654.,
 Panama Railroad realignment [Third Locks realignment] cut about 1 mile (1 kilometer) north of north end of Gatun Third Locks excavation, Canal Zone. Latitude 9 18' N., longitude 79'55' W., plus 200 feet (60 meters). T. F. Thompson, 1942.
 [French Canal] 10.5 kilometers from
 Col6n, Canal Zone. R. T. Hill, 1895. [According to Dall (Hill, 1898, p. 271), Hill's no. 48 represents Hill's Monkey Hill beds. The locality record probably should read 6 kilometers from ColOn. See remarks under locality 158.] Not
 plotted.
 Deviation [Diversion] cut south of
 Monkey Hill [Mount Hope], Canal Zone. R. T. Hill, 1895. Location
 approximate.
- Cuts on north [west] side of French
 Canal [East Diversion], Mount Hope, Canal Zone. A. A. Olsson, 1918.
 Location approximate.
- Road bordering French Canal [East
 Diversion], near Mount Hope, Canal Zone. A. A. Olsson, 1918. Location approximate.
- Road on south [east] side of French
 Canal [East Diversion], Canal Zone.
 A. A. Olsson, 1918. [Probably near
 locality 176.] Not plotted.
_ Monkey Hill [Mount Hope], near
 Gatun, Canal Zone. J. Rowell, 1857 and possibly later. [Some specimens have early Smithsonian Institution catalog numbers, but most have later U. S. National
 Museum numbers.]


128


173a