260 



INDEX. 



Geography, description of 26-49 



Geologic correlation, results of work on 15 



section on 91-94 



table showing 57 



Geologic history, outline of 79-82 



Geologic structure, general features of 176-177, 203 



results of studies of 16 



section on 77-79 



Gold, amount of, in copper ores, assays show- 

 ing 241 



recovery of, from stream gravels 232 



summary statement on 242 



Gonalves, Eocene rocks near 58, 200 



Gran Estero, geologic history of 181 



location of 28, 46 



Granodiorite, occurrence of 202 



Granular intrusive rocks, description of 83-84 



Gurabo, Cretaceous rocks near 54 



fossils collected near 55 



Oligocene rocks near 62 



sedimentary rocks near, sequence of 54 



volcanic rocks exposed near 55 



Gurabo Adentro, Cercado formation near 69 



Miocene fossils found near.... 115-124, 131-145 



section of Gurabo formation near 70 



Granite porphyry, description of 86 



Ground water, analyses of 249-253 



possibility of obtaining 177-178, 249 



Guanarate, salt springs at 192 



Gurabo formation, age, character, thickness 



and distribution of 57,69-73 



contact of Mao Adentro limestone with 74 



correlation of 100 



fossils of 69-73,98-99,130-151 



fossils from deeper-water facies of 147-151 



sections of 69-70,71,72 



stratigraphic relations of 71 



thickness of 72 



type locality of 69 



views of (PL XII, B; PI. 



XIII, A) 72, 74 



Gurabo Hills, Mao Adentro limestone near.. 73-74 



Miocene fossils found in 151-153 



Guayacan (lignum-vitae tree), view showing 



(PL XVII, A) 198 



Guayajayuco, geologic structure near 53 



trail from 36 



Guayubin, Cretaceous fossils found near 54 



Gypsum, deposits of 244-245 



summary concerning deposits of, in 



Azua and Barahona provinces 227 



Haiti, Eocene rocks in 58, 200 



position of 26 



volcanic center in 210 



Harootian, Dr. Jacob, aid by 237 



San Francisco mining concession sought 



by 237 



openings made on copper deposits by.... 236 

 work on La Rama copper prospect of.... 238 



Hatico, location of 195 



rocks near 208 



Hatillo, copper deposits near 230, 243 



Eocene rocks near 59-60 



faulting at 78 



Hatillo — Continued. 



iron ores near 243 



magnetite deposits near 60, 229-230 



rocks of basal complex near 50, 52 



view northward from (PL V. A) 34 



Hatillo and Maimon, mineral deposits near 228-231 



Bulla conglomerate near 67 



Cercado formation near 67 



Miocene fossils found near.... 114, 115, 1 16-124 

 view of Cercado formation near (PL 



XII, A) 72 



Heneken, T. S., cited on identity of limestone 

 capping El Morro de Monte Cristi 



and Samba Hills 176 



cited on Miocene rocks in the Cibao 



Valley 65 



copper prospecting by 237 



Hewett, D. F., manganese ore examined by.. 243 

 Highways. See Roads. 



Higuerito, fossils found at and near 106, 155 



oil field at 222, 223-225 



summary concerning oil and gas at 226 



Higuero Largo, Tertiary rocks and fossils 



found near 106, 155, 157-160, 199, 212 



Historical geology, outline of 79-82 



Hoenes, Captain, aid rendered by 186 



Hornblende andesite, description of 87 



Hornblende-augite andesite, description of.. 87 



Horneblende diabase, description of 86 



Howe, M. A., acknowledgments to 90 



Hubbard, Bela, cited on correlation of Ter- 

 tiary formations 94 



cited on stratigraphic limit of Orthau- 



lax 96 



Ibarra & Gosling, wells of, analysis of water 



from 251 , 252 



Igneous activity, evidences of 80 



studies of 16 



Igneous rocks, distribution of 202-203 



Igneous and metamorphic rocks, descrip- 

 tion of 83-88 



Interocean Oil Co., tests of oil made for.... 224-225 



Intrusive rocks, descriptions of 84-85 



" Iron Mountain '' of Gabb, rocks at 60 



Iron ores, deposits of 231, 243 



Isabel de los Torres, Miocene rocks at 173 



Oligocene rocks near 171 



Itinerary of surveying party, brief state- 

 ment of 12-13 



Jackson, R. T., acknowledgments to 89 



Jarabacoa, basal rocks exposed near 52 



position of 34 



Joca, basal rocks exposed near 52 



position of 37 



Jones, W. F., cited on Eocene and Oligocene 



rocks in Haiti 58 



cited on Eocene rocks at and near Port 



au Prince 200 



cited on volcanic crater in Haiti 210 



Juan Calvo Hill, quartz diorite at 171 



Justice, A. R., San Francisco mining conces- 

 sion bought and sold by 237 



Kid well, C. II., analyses of water by 14 



Kilborne, E. I., information furnished by 219 



