. The building of an island : being a sketch of the geological structure of the Danish West Indian island of St. Croix, or Santa Cruz. Geology -- Virgin Islands of the United States Saint Croix. ;8 THE 15LIILDING OF AN ISLAND. On the east side of Waiter's Point the rocks are very similar to those common around Christiansted, externally brown and plainly stratified, but without fossils, the strata dipping at about 45 degrees to the southwest; but when we pass to the western side of the point we find a set of strata of varied character and standing at very high angles, some of them absolutely ve
. The building of an island : being a sketch of the geological structure of the Danish West Indian island of St. Croix, or Santa Cruz. Geology -- Virgin Islands of the United States Saint Croix. ;8 THE 15LIILDING OF AN ISLAND. On the east side of Waiter's Point the rocks are very similar to those common around Christiansted, externally brown and plainly stratified, but without fossils, the strata dipping at about 45 degrees to the southwest; but when we pass to the western side of the point we find a set of strata of varied character and standing at very high angles, some of them absolutely vertical. A fossil sea-egg. for example, has been found here on the surface of a bed of gritty rock now quite upright, which, when the sea-egg lived on its surface and was embedded in the sand, was certainly level or nearly so. The strata here consist of limestones, indurated clays, etc., and at one place there is a rather extensive intrusion of igneous rock from below. Some of the limestones are compact, but others seem to be made up of broken frag- ments cemented together, and at least one bed of gritty rock seems to contain waterworn fragments of the same limestone. In the limestone layers, numerous specimens of a very curious fossil are embedded. In outward appearance and in the cross-section these so much resemble plant stems of some kind that the present writer has hitherto regarded them as such, but, on submitting some of them to scientific examination in New York recentlv, has been informed that the apparent stem fragments are of animal origin, showing "coralline or some similar animal ; One of the best specimens collected is several inches in length and about seven inches across. It has in one part a black outer covering, suggesting the bark of a stem, while running up through it and parallel to each other there are black columns that look like the bundles of fibres that run through the stems of some plants. The arrangement is shown in the accompanyin
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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1900, bookyear1907
