Correlation of Miocene strata on the submarine St. Croix Ridge and onland St. Croix, US Virgin Islands

Autor: von Salis, Katharina, Speed, Robert
Zdroj: Geo-Marine Letters; March 1995, Vol. 15 Issue: 1 p17-22, 6p
Abstrakt: The nannofossils of an hydraulic piston core from the steep scarp between the St. Croix Ridge and Virgin Islands Basin were restudied. Formerly thought to represent a Pliocene debris flow, we interpret it as an early Miocene (NN1/2) hemipelagic deposit. We correlate the seismic unit sampled by piston core with the Kingshill-Jealousy Formation present on St. Croix. These sediments likely belong to an extensive, thick, deep marine cover of the St. Croix Ridge, deposited on a metamorphic—igneous basement between early Eocene and early Miocene time. Faulting did not evidently affect this sediment cover until the late Neogene.
Databáze: Supplemental Index