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Coastal & Marine Geology Program >Subsidence and Fault Activation . . . > Open File Report 01-274

Shallow Stratigraphic Evidence of Subsidence and Faulting Induced by Hydrocarbon Production in Coastal Southeast Texas

USGS Open File Report 01-274

Robert A. Morton, Noreen A. Purcell, and Russell L. Peterson

Contents:
Summary
Introduction
Geology & Production Histories
Sediment-Surface Profiles
Sediment Cores
Results
Coastal Environmental Implications
References
Appendix A
Appendix B
Project Contact:
Bob Morton

Appendix B: Core Descriptions

Appendix B: Core Descriptions
Port Neches Cores - BH-00-01 |BH-00-02 |BH-00-03 |BH-00-04 |BH-00-05 |BH-00-06
Caplen Field Cores - COF-00-01 |COF-00-02 |COF-00-03 |COF-00-04

Core COF-00-02
Core COF-00-02
[larger version 160 K]
Location: Caplen Oil Field, Galveston County, TX
  Latitude N29°29'40.98"
  Longitude W94°35'21.77"
  Water depth 0.44 m
  Length recovered 0.60 m
  Date obtained 06/18/2000
  Date described 08/22/00
0-6 cm Sandy Mud Olive gray (5Y4/1)
V. little sand, somewhat hydrous
Roots: few fibrous (random)

* gradational contact
6-25.5 cm Mud Med. dark gray (N4) to med. greenish gray (5GY 5/1)
Common organic mottling
Dark gray (N3) layer of organic mud 6-8 cm
Roots: less than or equal to 1 mm roots (random)

* gradational contact
25.5-35 cm Sandy Mud Med. Ð dark greenish gray (5GY 5/1-4/1)
V. little v. fine-grained sand, v. little organic mottling
Roots: less than or equal to 0.5 mm (random)

* gradational contact
35-60 cm Sandy Mud Med. greenish gray (5GY 5/1)
Iron-stained organic remains - Moderately light brown (5YR 4/5) and moderate brown (5YR 3/4) mottling disseminated, but increases between 43-56 cm
Roots: less than or equal to 0.5 mm (random)

« Caplen Field Core COF-00-01 | Calpen Field Core COF-00-03 »

Coastal & Marine Geology Program >Subsidence and Fault Activation . . . > Open File Report 01-274


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