Geology of the Newark Rift Basin

Thickness & Facies Trends

Thickness and facies trends

Thickness and facies trends. Cross section showing how strata thicken and lacustrine facies deepen (red=shallowest-water deposits; black=deepest-water deposits) from the hinged margin (on the right) toward the border fault (on the left) of a rift basin because basin subsidence and lake depth were greatest near the fault. Cross section is highly vertically exaggerated and applies best to the Passaic Formation. A stratal package consists of black, gray, and red units near the border fault. This package thins away from fault. Also, the proportion of black and gray in a package decreases with increasing distance from border fault. From Silvestri and Schlische (1992).

Geology Museum