Planktonic foraminifera in sediments of the Ibero-Moroccan Continental Margin

Recent clays cover the East Atlantic continental slopes. They are gray and poor in sand off Portugal (Cape Sines), but reddish brown to reddish gray and richer in sand off...东大西洋大陆坡被近代黏土沉积物（Recent clays）所覆盖。在葡萄牙外海辛角（Cape Sines）海域，该沉积物呈灰色且砂质占比偏低；而在……海域，其色泽为红棕色至红灰色，且砂质占比更高。