GEOLOGY AND PALEONTOLOGY OF CANAL ZONE


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


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


6026


57







57a 58 59 60 61


 Description of locality



MIDDLE MEMBER OF CAIMITO FORMATION, GATUN LAKE AREA, CANAL
 ZONE-COitinued

Foraminiferal coarse sandy marl about
 halfway between Monte Lirio and Bohio Ridge, relocated Panama Railroad. D. F. MacDonald and T. W.
 Vaughan, 1911. (MacDonald, 1919, p. 541, pl. 154). Also corals
 (Vaughan, 1919a, p. 208).
Relocated Panama Railroad about 2
 miles (3 kilometers) south of Mitchelville [Monte Lirio]. D. F. MacDonald, 1911. Same as locality 57
 Not plotted.

UPPER MEMBER OF CAIMITO FORMATION,
 GATUN LAKE AREA, CANAL ZONE Puma Island, in front of shed near
 crest of island. Hard calcareous sandstone. S. M. Jones and W. P.
 Woodring, 1947. Larger Foraminifera (Cole, 1952 [1953]).

UNDIFFERENTIATED CAIMITO FORMATION, RIO MANDINGA AREA, CANAL
 ZONE
Northward-flo wing tributary of Rio
 Mandinga, 3.3 kilometers southwest of west end of Gamboa bridge.
 Medium-grained poorly sorted silty tuffaceous sandstone. R. H. Stewart, 1948. Also collection by W. P.
 Woodring, 1949. Larger Foraminifera (Cole, 1952 [1953]).
300 meters upstream from locality 59.
 Pebbly calcareous tuffaceous sandstone. W. P. Woodring, 1949.
About 45 meters west of pipe-line road
 and 3.5 kilometers west-southwest of west end of Gamboa bridge.
 Limestone. W. P. Woodring, 1949.
 Corals.

QUEBRANCIIA LIMESTONE MEMBER OF
 CAIMITO FORMATION, QUEBRANCHA
 SYNCLINE, PANAMA
North side of Transisthmian Highway at entrance to plant of Cia. Cemento Panamd, S. A., 125 meters northwest of Transisthmian Highway bridge across Rio Gatuncillo. Lower part of limestone. T. F. Thompson and W. P. Woodring, 1947.


5901 17685


Ila 29 30


121 120


62a 63


118


 Description of locality



 QUEBRANCHA LIMESTONE MEMBER OF
 CAIMITO FORMATION, QUEBRANCHA
 SYNCLINE, PANAMA-continued

 Quarry of Cia. Cemento Panamd, S. A.,
 150 meters northwest of locality 11.
 Middle part of limestone. J. R.
 Schultz and W. P. Woodring, 1947.
 Larger Foraminifera (Cole, 1952
 [19531). Not plotted.

LOWER PART OF CAIMITO FORMATION,
 MADDEN BASIN, PANAMA

 Transisthmian Highway, 4 kilometers
 north-northwest of Rio Chagres bridge. Sandy limestone in cal-* careous sandstone-siltstone member.
 W. P. Woodring, 1947. Larger
 Foraminifera.
 Transisthmian Highway, 3.3 kilometers north-northwest of Rio Chagres bridge. Medium-grained calcareous tuffaceous sandstone in calcareous sandstone-siltstone member. W. P.
 Woodring, 1947. Larger Foraminifera (Cole, 1952 [1953]).
 Rio Chagres at locality where trail from
 Alhajuela reaches river, about 6 miles (10 kilometers) by river above Alhajuela. D. F. MacDonald, 1911.
 [A submerged locality.]
 Rio Chagres about a mile (1.5 kilometers) below mouth of Rio Pequeni, limestone at Marcelito, just below Bajilla Rain Gage Station. A. A.
 Olsson, 1919. [A submerged locality.] Location approximate.
 Rio Chilibrillo, 650 meters above bridge
 on road to Casa Larga. Coarsegrained poorly sorted calcareous somewhat tuffaceous sandstone in calcareous sandstone-siltstone member, about 15 meters above base of Caimito formation. W. P. Woodring, 1949. Larger Foraminifera
 (Cole, 1952 [1953]).
 Rio Chilibrillo, 325 meters above bridge
 on road to Casa Larga. Very finegrained silty sandstone in calcareous sandstone-siltstone member. W. P.
 Woodring, 1949. Smaller Foraminifera.


64 65 66 67 68


8386


5907


54 110








111 112 11


62 1 1693