About This Item

Share This Item

The AAPG/Datapages Combined Publications Database

Pacific Section of AAPG

Abstract


Structural Geology of the Sacramento Basin: 1992 Pacific Section Annual Convention, 1992
Pages 15-25

Tectonic Effects on the Upper Cretaceous and Paleogene Stratigraphy Along the Midland Previous HitFaultNext Hit System, Southern Sacramento Basin, California

Dane S. Johnson

Abstract

Upper Cretaceous and Paleogene strata in the forearc Sacramento Basin have been affected by Previous HitfaultNext Hit activity associated with a north-northwest trending syndepositional growth Previous HitfaultNext Hit system. This system, the Midland Previous HitFaultNext Hit System, is the dominant structural feature in the southern Sacramento Basin.

Syndepositional movement along the Midland Previous HitFaultNext Hit System has resulted in a thickening of Upper Cretaceous and Paleogene strata along the western (downthrown) side of the growth faults, and the formation of domal structures on the downthrown side of growth faults at the Bunker, Lindsey Slough, and Rio Vista gas fields. Late Paleocene-early Eocene growth Previous HitfaultNext Hit activity resulted in the formation of the domal structure at the Rio Vista Gas Field, as evidenced by the thinning of the Anderson Sand and Meganos Shale near the crest of this structure. The relatively constant thickness of the McCormick Sand and Martinez Shale west of the Midland Previous HitFaultNext Hit, and the increased rate of post-Martinez Paleogene deposition stepping westward across the Previous HitfaultNext Hit system, indicates a Late Paleocene through Eocene age for most Midland Previous HitFaultNext Hit System activity in the Rio Vista area. Early Eocene movement along the Midland Previous HitFaultNext Hit System has resulted in the removal of the Hamilton Sand, Meganos Shale, Anderson Sand, Martinez Shale, and the upper portion of the McCormick Sand east of the Previous HitfaultNext Hit system, with only the lower portion of the McCormick Sand remaining east of the Previous HitfaultTop system.


Pay-Per-View Purchase Options

The article is available through a document delivery service. Explain these Purchase Options.

Watermarked PDF Document: $14
Open PDF Document: $24