Sequence Stratigraphy, Diagenesis and Mechanical Behavior of the Glen Rose Formation at Canyon Lake Gorge, Comal County, Texas
Sequence Stratigraphy, Diagenesis and Mechanical Behavior of the Glen Rose Formation at Canyon Lake Gorge, Comal County, Texas

Author: Chase E. Bridges

Publisher:

Published: 2015

Total Pages: 69

ISBN-13: 9781339034041

DOWNLOAD EBOOK

During the Albian stage (104 to 110 Ma), intertropical conditions allowed the development of a broad carbonate platform along the northern margin of the proto-Gulf of Mexico. Carbonate-rich sediments were deposited in various environments belonging to the shallow marine realm. Their production is mostly controlled by the type and efficiency of benthic ecosystems. In 2002, a major flooding exposed a 63m-thick carbonate succession belonging to the Glen Rose Formation in Canyon Lake Gorge, located northwest of San Antonio. The deposition of these rocks in shallow-water environments facilitated their subaerial exposure during times of low sea-level. Consequently, weathering due to their interaction with freshwater ensued. Diagenetic modifications comprise dissolution and early cementation promoting the early lithification of carbonate sediments. With this study, we aim to highlight a potential link between the sequence stratigraphy, geochemistry and the mechanical behavior of carbonate rocks of the Glen Rose Formation, using microfacies and diagenetic history to confirm the results. Identification of the standard microfacies characteristic of this formation is assessed by the petrographic analysis of acetate peels, further complemented by cathodoluminescence microscopy performed on selected thin sections. Sequence stratigraphy helps to pinpoint the stratigraphic location of subaerially exposed surfaces, which may thus exhibit post-depositional modifications. Carbon and oxygen isotopic analyses are used to complement sequence stratigraphic analysis; chemostratigraphic correlation with biostratigraphically-constrained series refines the dating of the Glen Rose Formation at Canyon Lake Gorge to 108-110 Ma. Fracturing potential is examined using a Schmidt hammer, assessing various geomechanical properties and especially the stiffness of the rock samples. Microfacies type and degree of cementation seems to be the main controlling factors.

Linking Diagenesis to Sequence Stratigraphy
Linking Diagenesis to Sequence Stratigraphy

Author: Sadoon Morad

Publisher: John Wiley & Sons

Published: 2012-11-05

Total Pages: 536

ISBN-13: 111848536X

DOWNLOAD EBOOK

Sequence stratigraphy is a powerful tool for the prediction of depositional porosity and permeability, but does not account for the impact of diagenesis on these reservoir parameters. Therefore, integrating diagenesis and sequence stratigraphy can provide a better way of predicting reservoir quality. This special publication consists of 19 papers (reviews and case studies) exploring different aspects of the integration of diagenesis and sequence stratigraphy in carbonate, siliciclastic, and mixed carbonate-siliciclastic successions from various geological settings. This book will be of interest to sedimentary petrologists aiming to understand the distribution of diagenesis in siliciclastic and carbonate successions, to sequence stratigraphers who can use diagenetic features to recognize and verify interpreted key stratigraphic surfaces, and to petroleum geologists who wish to develop more realistic conceptual models for the spatial and temporal distribution of reservoir quality. This book is part of the International Association of Sedimentologists (IAS) Special Publications. The Special Publications from the IAS are a set of thematic volumes edited by specialists on subjects of central interest to sedimentologists. Papers are reviewed and printed to the same high standards as those published in the journal Sedimentology and several of these volumes have become standard works of reference.

Linking Diagenesis to Sequence Stratigraphy (Special Publication 45 of the IAS)
Linking Diagenesis to Sequence Stratigraphy (Special Publication 45 of the IAS)

Author: Sadoon Morad

Publisher: Wiley-Blackwell

Published: 2013-02-11

Total Pages: 530

ISBN-13: 9781118485392

DOWNLOAD EBOOK

Sequence stratigraphy is a powerful tool for the prediction of depositional porosity and permeability, but does not account for the impact of diagenesis on these reservoir parameters. Therefore, integrating diagenesis and sequence stratigraphy can provide a better way of predicting reservoir quality. This special publication consists of 19 papers (reviews and case studies) exploring different aspects of the integration of diagenesis and sequence stratigraphy in carbonate, siliciclastic, and mixed carbonate-siliciclastic successions from various geological settings. This book will be of interest to sedimentary petrologists aiming to understand the distribution of diagenesis in siliciclastic and carbonate successions, to sequence stratigraphers who can use diagenetic features to recognize and verify interpreted key stratigraphic surfaces, and to petroleum geologists who wish to develop more realistic conceptual models for the spatial and temporal distribution of reservoir quality. This book is part of the International Association of Sedimentologists (IAS) Special Publications. The Special Publications from the IAS are a set of thematic volumes edited by specialists on subjects of central interest to sedimentologists. Papers are reviewed and printed to the same high standards as those published in the journal Sedimentology and several of these volumes have become standard works of reference.