. A geological reconnaissance of the Dominican republic . All of Enriquillo Basin is worthy of careful attention. Searchfor oil seepages should be made east of Duverge and also from Neiba east-ward. The triangular area southeast of the limestone slopes of the Sierrade Neiba, north of Laguna Rincon, and west of Rio Yaque appears todeserve most careful attention. San Juan Valley is so largely covered with the gravel of the Las Matasformation that the folded beds beneath it can be studied at only a fewplaces. The exposure along Rio Yaque, near the east end of the San JuanValley, consist almost en
. A geological reconnaissance of the Dominican republic . All of Enriquillo Basin is worthy of careful attention. Searchfor oil seepages should be made east of Duverge and also from Neiba east-ward. The triangular area southeast of the limestone slopes of the Sierrade Neiba, north of Laguna Rincon, and west of Rio Yaque appears todeserve most careful attention. San Juan Valley is so largely covered with the gravel of the Las Matasformation that the folded beds beneath it can be studied at only a fewplaces. The exposure along Rio Yaque, near the east end of the San JuanValley, consist almost entirely of coarse sandy materials of no promise aspossible containers of oil. An examination should be made of the westernpart of this valley, near the Haitian border, where there are outcrops oflignite, possibly of Miocene age. DOMINICAN REPUBLIC Geological Survey Memoirs, Vol. I, Pl. XX / ■Xf* H,%**M PHBPBsHS^kA^^^^ 4. PLICATION IN SHALY PURPLISH-RED LIMESTONE OF EARLY TERTIARY (?) AGE ALONG RIO OCOA A SHORT DISTANCE DOWNSTREAM FROM SAN JOSE DE B. TILTED BEDS OF PURPLISH-RED LIMESTONE NEAR SUPPOSED OIL SEEP ONARROYO SALADO, A TRIBUTARY OF RIO OCOA. GEOLOGY OF THE PROVINCES OF BARAHONA AND AZUA. 227 Salines.—Chemical analyses of the water of Lake Enriquillo and of twosalt springs showed that the waters are of no economic value. The Cerrosde Sal was examined in the hope that the beds of rock salt might containpotash. The results were disappointing, as no analysis showed potash incommercial quantity. (See analyses on p. 217.) The salt beds consist al-most entirely of sodium chloride, with small admixture of clayey materialor other salts. The deposits will probably continue to be the chief sourceof salt for the inhabitants of the interior, although the salt is far from pure,generally containing at least 10 per cent of impurities. If it is mined forexport it must be refined, and it could probably not compete in the exportmarket with the salt derived by evaporation in the
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectgeology, bookyear1921
