About This Item

This article has been peer-reviewed and accepted for publication in a future issue of the AAPG Bulletin. This abstract and associated PDF document are based on the authors' accepted "as is" manuscript.

Editorial Policy for Ahead of Print


Cite This Item

Display Citation

Share This Item

The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Visit Publisher's Website  

Ahead of Print Abstract

AAPG Bulletin, Preliminary version published online Ahead of Print 1 November 2025.

Copyright © 2025. The American Association of Petroleum Geologists. All rights reserved.

DOI:10.1306/10212524062

Analysis of anomalous thicknesses of the Hunton Group (Late Ordovician - Early Devonian) using image and standard open-hole wireline logs

Chase Watkins and James Puckette

Ahead of Print Abstract

Correlating the internal stratigraphy of the Late Ordovician to Early Devonian Hunton Group carbonates in the subsurface is problematic without paleontological data. Adding to this challenge are the seemingly rare occurrences of drastic changes in the thickness of the underlying Sylvan Shale, the Hunton Group itself, and overlying Woodford Shale over short distances. Many workers have invoked the use of faults that intersect the wellbore or preferential erosion to explain these anomalies without taking a closer look at patterns on wireline logs that accompany these anomalies. By integrating data from resistivity image logs, wireline log curves, and isochore maps, anomalous thickness patterns can be explained by depositional variation and erosion, without relying on interpretations of faults intersecting the wellbores. Patterns in isochore maps strongly suggest that vertical movement on fault blocks created differential accommodation, with increased deposition along downthrown fault blocks and nondeposition and erosion on uplifted fault blocks. The most significant consequence of this study is the realization that any attempt to understand the fault movement and paleotopography during the Hunton Group must also include the underlying Sylvan Shale as Hunton deposition was influenced by the post-Sylvan paleotopography.

Pay-Per-View Purchase Options

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

Watermarked PDF Document: $16
Open PDF Document: $28

AAPG Member?

Please login with your Member username and password.

Members of AAPG receive access to the full AAPG Bulletin Archives as part of their membership. For more information, contact the AAPG Membership Department at [email protected].

Please cite this AAPG Bulletin Ahead of Print article as:

Chase Watkins, James Puckette: Analysis of anomalous thicknesses of the Hunton Group (Late Ordovician - Early Devonian) using image and standard open-hole wireline logs, (in press; preliminary version published online Ahead of Print 01 November 2025: AAPG Bulletin, DOI:10.1306/10212524062.

Close