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Sedimentology and Stratigraphy

Explorer Foundation Update

AAPG’s historic Distinguished Lecture program has undergone a revolutionary transformation aimed at extending the program’s accessibility, audience and reach.

American Association of Petroleum Geologists (AAPG)
Explorer Article

An old joke used to be told in Israel: Why did Moses so unwittingly lead the Jewish people to the land of milk and honey and not to one of its petroleum-rich neighbors? Not anymore. In the last decade, giant gas fields have been discovered in the Eastern Mediterranean Sea offshore Israel, and offshore gas is rapidly becoming the main source of energy for power generation.

American Association of Petroleum Geologists (AAPG)
Learn! Blog

The recent dramatic rescue of 11 young soccer players and their coach from a cave in Thailand was very moving, and it made one aware of just how complex the karst systems are. Welcome to an interview with Sarawute Chantraprasert, a geologist and AAPG member, who coincidentally has conducted field work and worked in Chiang Mai, the very same region where the rescue took place.

American Association of Petroleum Geologists (AAPG)
Explorer Geophysical Corner

The challenges of the Mina El Carmen Formation can be overcome by evaluating the application of various interpretation tools and special processes, so that the reservoir sands can be detected and visualized in terms of their geometry, orientation, extension, thickness and position in the stratigraphic column.

American Association of Petroleum Geologists (AAPG)
Explorer Article

Mark G. Rowan, one of two recipients of this year’s Robert R. Berg Outstanding Research Award, was more than just a little bit surprised about his selection – as much for being considered as for winning. Rowan received the honor for “his outstanding contributions to research on salt tectonics, fold-thrust belts, passive margins, diapirs and salt sheets, salt-sediment interaction and cross-section restoration.”

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

A strategy gaining force to reduce risk and improve decision-making in recent years is “integration,” the practice of combining disparate teams to complete single projects. Integrated teams are increasingly common in the energy sector, where single business units include geologists, geophysicists, petrophysicists, engineers and other professionals who work on a common project.

American Association of Petroleum Geologists (AAPG)
Explorer Director’s Corner

The continent of Africa has beguiled geologists for centuries. Its varied and beautiful landforms and geological features, its mineral and energy resources, its cultural heritage – it’s the birthplace of our species – all combine to form a rich experience of sights and sounds, aromas and flavors. Once you’ve been to Africa, you want to go back. And that’s why, after 10 years, we’re heading back to Africa next month – back to Cape Town, for the 2018 AAPG International Conference and Exhibition.

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American Association of Petroleum Geologists (AAPG)
Explorer President’s Column

“When you think about the future of energy in the year 2025, seven years from now, I see ______?” This was one of the digital interactive questions asked at the Energy Transitions Forum in Amsterdam last month. The answers from a room of energy professionals were telling: diversity, renewables, energy, change, hybrid, oil, gas. The Forum addressed how companies and geoscientists can broaden their roles for energy transitions that can include a lower-carbon future.

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American Association of Petroleum Geologists (AAPG)
Explorer Geophysical Corner

Advances in deep learning and artificial intelligence promise to not only drive our cars but also taste our beer. Specifically, recent advances in the architecture of deep-learning convolutional neural networks have brought the field of image classification and computer vision to a new level.

American Association of Petroleum Geologists (AAPG)
Explorer Article

Geoscientists have a special obligation. We are the historians of Earth’s past, much as medical researchers have a responsibility regarding the understanding and honest communication of the functions of the human body and lawyers to understand and correctly interpret the law. Many of the tools we have established in our search for oil and gas, from plate tectonics to seismic stratigraphy, to study of paleoenvironments and paleontology, are being applied to understanding the geologic past in ways that document climate change.

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American Association of Petroleum Geologists (AAPG)
Field Seminar
Houston, Texas
Saturday, 1 February 2025, 8:30 a.m.–1:00 p.m.

Everyone in Houston lives within a few miles of a bayou. Some people think of them as permanent, but the bayous are constantly changing, especially during high water events like Hurricane Harvey. This trip is a 2.5 mile walk down a section of Buffalo Bayou where we will look at the archives of past storms and discuss what to do for future storms.

American Association of Petroleum Geologists (AAPG)
Online e-Symposium
Thursday, 10 November 2011, 12:00 a.m.–12:00 a.m.

This work investigates how heterogeneity can be defined and how we can quantify this term by describing a range of statistical heterogeneity (e.g. coefficient of variation and the Lorenz coefficient).

American Association of Petroleum Geologists (AAPG)
Online e-Symposium
Tuesday, 16 August 2011, 12:00 a.m.–12:00 a.m.

The geochemistry of formation fluids (water and hydrocarbon gases) in the Uinta Basin, Utah, is evaluated at the regional scale based on fluid sampling and compilation of past records.

American Association of Petroleum Geologists (AAPG)
DL Abstract

Engineering of wind farms, development of carbon sequestration projects in shelfal waters, the proliferation of communication cables that connect the world, all of these things suggest that it is time to re-examine what we know about shelf processes both updip-to-downdip and along shoreline, and the influence of shelf processes on erosion and transport of sediments.

Request a visit from Lesli Wood!

American Association of Petroleum Geologists (AAPG)
VG Abstract

The carbonate sequences that were deposited in the now exhumed Tethyan Ocean influence many aspects of our lives today, either by supplying the energy that warms our homes and the fuel that powers our cars or providing the stunning landscapes for both winter and summer vacations. They also represent some of the most intensely studied rock formations in the world and have provided geoscientists with a fascinating insight into the turbulent nature of 250 Million years of Earth’s history. By combining studies from the full range of geoscience disciplines this presentation will trace the development of these carbonate sequences from their initial formation on the margins of large ancient continental masses to their present day locations in and around the Greater Mediterranean and Near East region. The first order control on growth patterns and carbonate platform development by the regional plate-tectonic setting, underlying basin architecture and fluctuations in sea level will be illustrated. The organisms that contribute to sequence development will be revealed to be treasure troves of forensic information. Finally, these rock sequences will be shown to contain all the ingredients necessary to form and retain hydrocarbons and the manner in which major post-depositional tectonic events led to the formation of some of the largest hydrocarbon accumulations in the world will be demonstrated.

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Request a visit from Keith Gerdes!

American Association of Petroleum Geologists (AAPG)
DL Abstract

As oil and gas exploration and production occur in deeper basins and more complex geologic settings, accurate characterization and modeling of reservoirs to improve estimated ultimate recovery (EUR) prediction, optimize well placement and maximize recovery become paramount. Existing technologies for reservoir characterization and modeling have proven inadequate for delivering detailed 3D predictions of reservoir architecture, connectivity and rock quality at scales that impact subsurface flow patterns and reservoir performance. Because of the gap between the geophysical and geologic data available (seismic, well logs, cores) and the data needed to model rock heterogeneities at the reservoir scale, constraints from external analog systems are needed. Existing stratigraphic concepts and deposition models are mostly empirical and seldom provide quantitative constraints on fine-scale reservoir heterogeneity. Current reservoir modeling tools are challenged to accurately replicate complex, nonstationary, rock heterogeneity patterns that control connectivity, such as shale layers that serve as flow baffles and barriers.

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Request a visit from Tao Sun!

American Association of Petroleum Geologists (AAPG)

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