GEOLOGY. 



62° 



*.?*.&, 





^s 





IT^ 1 



«&* 



P 



Afamo L 



Sole dad 



Cru_daxL Bolivax 

 (Angostura ) 



CARONI FALLS 



GULF OF PAR I A 



i 



. M " 



Patosl. F^fJiT" 



PenasPt. .,-'./' 



"Sail l-'oi-u.-iiido 



~c 



■y 



A, 



# 



o 



& 



o 



£ 



Bajrancas . 



Faxardo I. 



•1. ^, -*> 



V>' 



"^ 



C; i> 







> 



Galera Pt. 



TRINIDAD 



Galeota Pt. 



THE 



OMNOCO-ESSEQXJIBO REGION 



SOUTH AMKIIHIA 



COMPILED UNDER THE DIRECTION OF THE COMMISSION APPOINTED 



"TO INVESTIGATE AND REPORT UPON THE TRUE DIVISIONAL LINE BETWEEN 

 THE REPUBLIC OF VENEZUELA AND BRITISH GUIANA" 



WASH INC TON D.C. 

 L807 



Scale :>>2 MxLea to 1 inch or 1:2027520 



28 20 IS J" 6 i' 



,,„ 7 g loo 128 l.-.'i Kilom. 1. i h 



Baja Pt. 



AUTHORITIES 



Arrowsrnith. Bi a nconi. Brown. British Admiralty. Chal rners. Codazzi. 



Dixon. Hilhouse,Hobbs 1 lrnThurn.Journ.Sc.& Arts. 1820. PerUins. 



Roy.Geog-Society.SawUins.SchomburgU.Stanford and others. 



\t^ J 



kO* 



Barima Pt 



59" 

 Cextium EXTRACT ISO ' 



Mocomt)co n fcfb,.„, .,,,„„..„„/.../.. „f 



t".;iZl!;'"-,!t*';r ,: '' isoi io:£iEE stbdto KrtB.isai 



V\ 



7^ 





>' V' 1 ' 



,A° 









4 Jhfi*fr#& 



«J * 



3 ' SSL ? 



- 9 



it //«.>, 



C.Nassau 



HZ AD OF TIOE IS 



DOtVACA/MA FAJ-L 



CATARACT 



iAl 



ttA 



m 





-ft 



Ok, 



°ro i 



n. .,■'■'- 



GEOLOGICAL MAP 



REDUCED FROM THE 



'Geological Map of British Guiana, by Charles B. Brown, 1873.' 

 LEGEND. 



1 ALLUVIUM, 



2 SAND AND CLAY DEPOSIT. 



3 SANDSTONE. 



A- GREENSTONE. 



5 SCHIST AND GNEISS. 



6 QUARTZ PORPHYRY AND FELSTONE. 



7 GRANITE AND SYENITE. 



63° 



'-ty.E RUME 



■'/„_,... 



7 



>F 



3 ) : \ 



<- 

 '^ 5 



4 "' 



LpCLCZtmtX j 



Georgetown. 

 Vort I . 



Stampers I. 

 I 



""Kykoveral 



CORA Bt Rl FA LL 



AYANGCANNA NlTS- 



"" 3 ! %.. -~ 



M t Rora i ma 



PAC/A B/,^ 



A, 



fi* 



• ie.hff'nc/Jf \"">"-* t - * ,' — ^J 

 5 ■ 



/TA/ZTZUR FAIC 



S'P' 



.- 1'-^^^ 



62° 



61° 



'l !:. ; -v:€: 



;/w s/a HOEN&ca., baltimomc, mo. 



