Skip Nav Destination
Issues
Volume 105, Number 4
April 2021
ISSN 0149-1423
EISSN 1558-9153
In this Issue
GEOHORIZON
Applying deep learning for identifying bioturbation from core photographs
AAPG Bulletin April 15, 2021, Vol.105, 631-638. doi:https://doi.org/10.1306/08192019051
GEOLOGIC NOTE
Performance tracking: A historical background to promote learning
AAPG Bulletin April 15, 2021, Vol.105, 639-645. doi:https://doi.org/10.1306/08122019276
ARTICLES
Source rocks in foreland basins: A preferential context for the development of natural hydraulic fractures
AAPG Bulletin April 15, 2021, Vol.105, 647-668. doi:https://doi.org/10.1306/08122018162
Skempton’s poroelastic relaxation: The mechanism that accounts for the distribution of pore pressure and exhumation-related fractures in black shale of the Appalachian Basin
AAPG Bulletin April 15, 2021, Vol.105, 669-694. doi:https://doi.org/10.1306/07142019029
Consideration of the limitations of thermal maturity with respect to vitrinite reflectance, Tmax, and other proxies
AAPG Bulletin April 15, 2021, Vol.105, 695-720. doi:https://doi.org/10.1306/09242019261
Evaluation of Paleozoic source rocks in Kuwait
AAPG Bulletin April 15, 2021, Vol.105, 721-748. doi:https://doi.org/10.1306/08192018002
Evidence for deeply buried, oil-prone source rocks in the Baiyun depression, Pearl River Mouth Basin, northern South China Sea
Hongwei Ping; Honghan Chen; Puqiang Zhai; Junzhang Zhu; Wanlin Xiong; Lingtao Kong; Se Gong; Tania J. Vergara; Simon C. George
AAPG Bulletin April 15, 2021, Vol.105, 749-783. doi:https://doi.org/10.1306/04072018144
Application of principal component analysis on chemical data for reservoir correlation: A case study from Cretaceous carbonate sedimentary rocks, Saudi Arabia
AAPG Bulletin April 15, 2021, Vol.105, 785-807. doi:https://doi.org/10.1306/10142019105
-
Cover Image
Cover Image
![issue cover]()
ON COVER – Pre-folding J1 (tilted) and synto post-folding J2 (vertical cross-fold) joints cutting turbidite beds in the Devonian Brallier Formation of the Valley and Ridge in West Virginia (see Table 2 and Datashare 129 of Engelder and Behr, p. 669–694, this issue of the Bulletin). This set of J1 joints is an example of bed-normal joints which, when unfolded, strike between east-northeast and east-west in several formations of the Appalachian Basin from Alabama to Pennsylvania. The mystery of J1 joints is the lack of mineralization and lack of evidence for slip when subject to shear stress during folding.
- PDF Icon PDF LinkFront Matter
- PDF Icon PDF LinkTable of Contents
