HomeScience

Science

Explorer Division Column EMD

This is my final contribution to the AAPG EXPLORER as president of the Energy Minerals Division and it has been an honor. As with many other division presidents, I feel safe in the assumption that I did not achieve as much as I had hoped but take solace in the fact that as least some forward progression was made. It is in this that I would like to make my final contribution by addressing three EXPLORER articles in the last issue that reference issues that are of great concern to me: These three articles could not have been published at a better time.

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

In February, AAPG partnered with the Society of Petroleum Engineers and the Society of Exploration Geophysicists to conduct the Energy in Transition Symposium in Washington, D.C. Hosted by the Embassy of Canada in the U.S. capital, and with the financial support of the AAPG Foundation and other sponsors, the focus of the symposium to communicate the important role of subsurface science and engineering as global energy systems continue to evolve.

Show more
American Association of Petroleum Geologists (AAPG)
Explorer Historical Highlights

Colorado’s hydrocarbon industry was built on the foundation of early explorers and field geologists venturing through rough and often dangerous terrain, surveying and mapping in a young nation at a time when geology was in its technological infancy. Without even the aid of a Brunton compass (patented 1894) early geologists, such as Ferdinand Hayden and John Powell, created the beginnings of Colorado’s geological knowledge through exceptional skill and work, upon which we continue to build today.

Show more
American Association of Petroleum Geologists (AAPG)
Explorer Geophysical Corner

The processing of land seismic data entails a series of steps through which the data passes, including sorting, static correction, deconvolution, residual static correction, velocity analysis, migration, stacking, filtering and scaling. Some tasks, such as velocity analysis, are interactive, while others are automated. The processing of seismic data from the same area often follows the same proven series of steps or sequence, barring any unforeseen issues that need to be addressed. Such a sequence of tasks designed to process data from their initiation to completion is referred to as a “workflow.”

Show more
American Association of Petroleum Geologists (AAPG)
Explorer Article

National and international energy companies today face enormous pressure from government, shareholders and society to meet increasing demand and deliver profits while meeting the United Nations Sustainable Development Goals and progressing toward a transition away from fossil fuels. The Energy Trilemma – the capacity to provide energy security, energy equity and environmental sustainability simultaneously – is a term developed and measured by the World Energy Council since 2010. Whether they use “Energy Trilemma” or another term, industry leaders face daily decisions about how to provide reliable, sustainable energy for all while reducing CO2 emissions and developing cleaner energy sources.

Show more
American Association of Petroleum Geologists (AAPG)
Explorer Article

In a world with discussions about Peak Oil and transition away from hydrocarbons, the Caribbean remains a bright spot for traditional oil and gas exploration. From Trinidad and Tobago’s 100-year hydrocarbon industry in the north to massive discoveries in the Guyana Suriname Basin in Northern South America, there’s good reason why companies around the world are focused on the region. Developing and maintaining the local workforce is key to continued exploration and development, and AAPG’s Latin American and Caribbean Region is committed to aiding countries in making that possible.

Show more
American Association of Petroleum Geologists (AAPG)
Explorer Article

Alaska’s North Slope is the best conventional onshore oil play in the world. That’s according to Bill Armstrong, CEO and president of Armstrong Oil and Gas, Inc. And, he will give no quarter on his belief about how robust the future is for the North Slope’s prospects. In short, Armstrong calls the area “incredible.”

American Association of Petroleum Geologists (AAPG)
Explorer Article

Where is one of the best places on Earth to find sea monsters? In a desert, of course. The Sahara, to be more specific. The “Sahara Sea Monsters” fossil exhibit was the topic of a webinar hosted recently by AAPG’S Energy Minerals Division and co-sponsored with the Division of Environmental Geosciences.

American Association of Petroleum Geologists (AAPG)
Explorer Article

We joined the Houston Geological Society shortly after arriving in Houston as new-hire geologists in 1984. We met thousands of fellow geoscientists by attending, and organizing, hundreds of technical talks for 39 years. We learned about exciting discoveries, plays and technology from those who made them happen. Along the way, we became friends with a few legends. We are grateful for the deep friendships that arose while serving as HGS volunteers. With a grateful heart, we are happy to share our committee’s plans to celebrate the centennial year.

Show more
American Association of Petroleum Geologists (AAPG)
Explorer Historical Highlights

The decade of the 1960s was both hectic and productive in the international petroleum industry. During those years, I worked for three oil and gas companies: Shell; the state-owned Corporacion Venezolana de Petróleo, or CVP; and Philips Petroleum Corporation. The geographical locations were diverse: surface exploration in western Venezuela; the Maracaibo oilfields and Caracas; The Hague, in the Netherlands; Balikpapan, Indonesia; Bartlesville, Okla.; and Lafayette, La. One of my most fruitful experiences took place in Maracaibo, when I had the opportunity to work with a four-man team from the Institut Français du Pétrole, known as IFP – the French Petroleum Institute. They had been sent to Venezuela to conduct regional geological studies in support of the newly created CVP.

Show more
American Association of Petroleum Geologists (AAPG)
Field Seminar
Palermo, Italy
Thursday, 25 April 2024, 8:00 a.m.–5:00 p.m.

Time: TBC Attendee Limit: Minimum 15 - Maximum 50 People Fee: TBC Registration Deadline: TBC Field Trip Rendezvous Point Hotel nH Palermo This one-day field trip will provide an introduction to a Miocene-Pliocene succession of southern Sicily, which includes outcrops of the Messinian Salinity Crisis (MSC), as well as the Messinian-Zanclean GSSP (Global Boundary Stratotype Sections and Point) and Zanclean stratotype. The MSC sedimentary record consists of an evaporitic-carbonate unit at the base (the Basal Limestone), overlain the Lower Gypsum unit, in turn overlain by the Upper Gypsum unit, and sealed by transgressive chalk deposits of the Trubi Fm. The Lower Gypsum unit (massive gypsum with cm-sized selenite crystals) will be visited along the beach of Siculiana Marina (about 15 km NW of Agrigento). Next, we will visit near Capo Rossello (about 10 km NW of Agrigento) an outcrop of the Upper Gypsum unit consisting of clay-gypsum cycles and overlain by the Trubi Fm. The latter, at Scala dei Turchi beach, consists of chalk deposits arranged in a spectacular thick succession (~120 m thick) interpreted as astronomically-controlled depositional cycles. The uppermost interval of the MSC sedimentary record, including the Messinian-Zanclean GSSP, will be observed along the beach of Eraclea Minoa located about 20 km NW of Capo Rossello. Field Trip Leaders Antonio Caruso University of Palermo Attilio Sulli University of Palermo

Show more
American Association of Petroleum Geologists (AAPG)
Field Seminar
Palermo, Italy
Sunday, 21 April 2024, 8:00 a.m.–5:00 p.m.

Time: TBC Attendee Limit: Minimum 15 - Maximum 45 People Fee: TBC Registration Deadline: TBC This one-day field trip will focus on Mesozoic (Jurassic to Cretaceous) carbonates outcropping in the fold and thrust belt of western Sicily and equivalent to the aquifer complex of the Sciacca Geothermal Field located in the southwestern part of the island. Participants will have the opportunity to visit in the first stop a spectacular “drowned” carbonate-platform succession at Mt. Maranfusa located in an inactive quarry about 50 km SW of Palermo. The succession consists of Lower Jurassic peritidal cycles overlain by Middle Jurassic to Cretaceous pelagic limestone (e.g. ammonitic limestone, “chalk”) and marked by an unconformity with locally hardground. Syn-depositional Mesozoic tectonic is characterized by neptunian dykes and normal faults, whereas reverse faults, strike-slip faults, and joints are related to subsequent Cenozoic deformation. In the second stop, at Mt. San Calogero, adjacent to the picturesque coastal town of Sciacca (about 100 km south of Palermo), we will visit the surface expression of an extensive karst system linked to uprising geothermal fluids. Furthermore, we will discuss main characteristics of the Sciacca Geothermal Field and its connection to deep mantle-derived fluids. Outcrop data will be integrated with both 2D seismic lines and exploration well logs showing the stratigraphy and structure of the deep aquifer. Another topic, given the presence of faults and joints in the outcrops, this field trip can provide the participants with valuable insights into naturally fractured reservoirs at the sub-seismic scale. Field Trip Leaders Gianni Mallarino MOL Group Attilio Sulli University of Palermo

Show more
American Association of Petroleum Geologists (AAPG)
Field Seminar
Banff, Canada
Saturday, 11 May 2024, 8:00 a.m.–3:00 p.m.

Time: 8:00am - 5:00pm Fee: $300 AAPG members $350 Nonmembers $200 Academic/AAPG Emeritus Members $50 discount for workshop registrants Fee Includes: Transportation Insurance Field guide Entrance fee to Banff National Park Registration available during workshop registration This field trip will focus on the structural geology of the foothills and Front Ranges of Banff. Participants will be able to view excellent field examples of structures very similar to the producing oil and gas fields in the foothills to the west of Calgary and to learn about the complexities of sub-seismic-scale deformation. The field trip starts with an introduction to the interaction between thrust front with foreland basins and the interaction of basement trends with thrust belt geometries and (conventional) hydrocarbon fields. During the 1-day trip participants will follow a dip transect from the undeformed foreland basin, the eastern edge of the foothills marked by the triangle zone, the Front Ranges boundary and end at the Main Ranges west of Banff. Field Trip Itinerary Depart from Calgary – 8:00 a.m. Stop 1: Cochrane Retreat Road Overlook Trip overview and introduction; safety and logistics comments; interaction of thrust front with foreland basin; interaction of basement trends with thrust belt geometry and (conventional) hydrocarbon field distribution; appreciation of scale for subsurface play fairway. Stop 2: Scott Lake Stop 3: The Stony Nakoda Tim’s Classic stop, with historical importance for understanding the thrust belt and thrust geometry. Part 1 of displacement gradient on a large thrust. Most importantly, toilet stop after all the Tim’s coffee and driving. Review of Mt Yamnuska from a different perspective; preview of drive through McConnell damage zone and change in HW stratigraphy.. Stop 4: Lac des Arcs Imbricate thrust sheets in the Front Ranges and Banff Formation. Stop 5: Canmore T-junction Observe complexities of sub-seismic-scale deformation in mechanically layered rocks in the footwall of a large thrust Stop 6: Canmore strike view of the Rundle thrust Exposed strike view analogous to a cut-away of a giant conventional Foothills hydrocarbon field such as Turner Valley. Cross faults within the thrust sheet offset potential reservoir units at sub-seismic scale. Cross faults are arguably part of a regional trend associated with deeper, basement-rooted NE-SW structures. Stop 7: Mt Norquay Overlook Stop 8: Bow Falls Fracture systems in the Vega Siltstone Mbr of the Triassic Sulphur Mtn Fm. This outcrop of Vega Member siltstone of the Sulphur Mtn Fm is considered equivalent to upper Montney Fm. We will focus on the outcrop adjacent to the steps up to the Falls overlook.

Show more
American Association of Petroleum Geologists (AAPG)
Webinar
Virtual Webinar
Tuesday, 26 March 2024, 12:00 p.m.–1:00 p.m.

Presenting ExCaliber, a novel approach for fast iterations on basin / earth models so that more time can be spent on the final technical & economic integration. ExCaliber is based on an interactive thermal framework, powered at its core by a ML-based basin simulator which can compute in seconds high-resolution basin-scale temperature and Standard Thermal Stress results.

American Association of Petroleum Geologists (AAPG)
Short Course
Houston, Texas
Thursday, 14 March 2024, 8:30 a.m.–5:00 p.m.

This course course will explore the design of new plays, optimized for the goals and constraints of CO2 sequestration, and to develop the tools to de-risk and sell those plays to investors and regulators. It will be of particular interest to subsurface geoscientists and engineers with an interest in CO2 storage in saline reservoirs.

American Association of Petroleum Geologists (AAPG)
Short Course
Houston, Texas
Thursday, 14 March 2024, 8:30 a.m.–5:00 p.m.

The development and application of a fit-for-purpose CO2 injection model is presented in the context of a front-end engineering design for a new Carbon Capture Storage (CCS) project targeting a depleted gas reservoir in the North Sea. This course will provide an understanding of the impact of CO2 impurities on casing and tubing load cases. The course provides the background and results of the Fit-for-Purpose Casing and Tubing Analysis Program that was developed in collaboration with Harbour Energy for the UK Viking CCS Project.

Show more
American Association of Petroleum Geologists (AAPG)
Short Course
Houston, Texas
Thursday, 14 March 2024, 8:00 a.m.–12:00 p.m.

This half-day short course will familiarize attendees with the planning and execution of a whole core project. It's intended for those who plan to take core on CCUS projects including Geologists and drilling engineers.

American Association of Petroleum Geologists (AAPG)
Short Course
Houston, Texas
Sunday, 10 March 2024, 8:00 a.m.–5:00 p.m.

As part of the international effort to combat global warming, significant attention is being given to ways to sequester (store for the long-term) carbon dioxide, which is a major contributor to the greenhouse effect. This one-day course will look at some of the ways in which carbon dioxide can be stored and provide a detailed review of the SRMS framework prepared by the Society of Petroleum Engineers to classify and categorize the storage quantities.

Show more
American Association of Petroleum Geologists (AAPG)
Field Seminar
Khobar, Saudi Arabia
Monday, 4 March 2024, 8:00 a.m.–5:00 p.m.

Trip Leader Saeed Tofaif, Saudi Aramco Pre-Workshop Field Trip Date: 4 March Registration Deadline: 4 February Attendee Limit: 12-Min. / 25-Max. --> Fee: $200 Note:To register for the field trip please select the field trip option while completing your registration for the workshop The Hadrukh Formation of eastern Saudi Arabia was deposited in early Miocene in tidal, restricted lagoon and sabkha settings with fresh water incursions. Deposition in these non-marine, semi-arid coastal plains resulted deposition of varying lithologies in short lateral extent. This field trip to Hadrukh Formation outcrops in Eastern Province of Saudi Arabia offers observation of internal stratigraphy of the Hadrukh Formation and lithological changes in the lateral extent, which is a key component in defining stratigraphic traps in the subsurface.

Show more
American Association of Petroleum Geologists (AAPG)
Short Course
Pittsburgh, Pennsylvania
Thursday, 29 February 2024, 7:30 a.m.–8:30 a.m.

American Association of Petroleum Geologists (AAPG)
Workshop
Palermo, Italy
Monday, 22 April Wednesday, 24 April 2024, 8:00 a.m.–5:00 p.m.

This Symposium marks a collaborative event that brings together AAPG Europe and AAPG Middle East, with a central focus on carbonates and mixed carbonate systems worldwide, while highlighting their significance within these two regions. The primary objectives are an overview of controls that govern the evolution of these systems in time and space and the characterization and prediction of their properties across scales.

American Association of Petroleum Geologists (AAPG)
Workshop
Abu Dhabi, UAE
Monday, 27 May Wednesday, 29 May 2024, 8:00 a.m.–5:00 p.m.

In order to support the energy transition, optimizing exploration and production from complex stratigraphic-diagenetic conventional and unconventional plays remains highly important. At the same time, Carbon Capture and Storage (CCS) poses new technological challenges that will impact both the industry and academia for decades to come. This 2nd edition will present reviews and discuss technology developments in geological process-based forward modeling achieved during the last 2 years. New perspectives for future technology developments and implementation in industry workflows will be discussed and with the additional focus on CO₂ storage and other sustainability-related applications, the scope of the workshop will be considerably extended.

Show more
American Association of Petroleum Geologists (AAPG)
Workshop
Khobar, Saudi Arabia
Tuesday, 5 March Thursday, 7 March 2024, 8:00 a.m.–5:00 p.m.

Join us for the 4th Edition of: "Stratigraphic Traps of the Middle East" workshop. The workshop will be hosted by AAPG in Al Khobar, Saudi Arabia 5-7 March 2024.

American Association of Petroleum Geologists (AAPG)
Webinar
Virtual Webinar
Tuesday, 9 June 2020, 4:00 p.m.–5:00 p.m.

Visiting Geoscientist Susan Morrice shares her personal experience and insight in this talk about opportunities for geoscientists. “Geoscientists have advantages ... They are Time Travellers and have open minds. Bringing this creativity and innovation to your company or starting your own! Challenging times bring silver linings!”

American Association of Petroleum Geologists (AAPG)
Online Certificate Course
Tuesday, 1 January 2013, 12:00 a.m.–1:00 a.m.

You may sign up for these 5 courses as a package at any time, and the courses will begin the first day of the upcoming month.

American Association of Petroleum Geologists (AAPG)
Webinar
Virtual Webinar
Thursday, 22 October 2020, 3:00 p.m.–4:00 p.m.

Join us to hear Jean-Jaques Biteau talk about key parameters controlling pressure regimes, trap sealing at the level of both the basin and the prospect, as well as areas of uncertainty. Webinar will be presented on Thursday 22 October at 15:00 SGT (UTC+8) Singapore time zone.

American Association of Petroleum Geologists (AAPG)
Online e-Symposium
Thursday, 21 February 2013, 12:00 a.m.–12:00 a.m.

The course will review core data, petrophysical comparisons, rock physics modeling (including pseudo logs and mechanical properties).

American Association of Petroleum Geologists (AAPG)
Online Certificate Course
Tuesday, 1 January 2013, 12:00 a.m.–1:00 a.m.

Solar Energy Basics is an online course that enables participants to review, analyze, and evaluate opportunities in the rapidly expanding market for solar energy.

American Association of Petroleum Geologists (AAPG)
Online e-Symposium
Thursday, 4 October 2012, 12:00 a.m.–12:00 a.m.

Effective hydraulic fracture stimulation is critical for shale development, and microseismic is the only technology able to map the growth of these hydraulic fracture networks.

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)
Online e-Symposium
Virtual Online e-Symposium
Thursday, 19 November 2009, 12:00 a.m.–12:00 a.m.

This presentation will review the results of ongoing carbon storage research in Kentucky by the Kentucky Geological Survey (KGS) and industry partners.

American Association of Petroleum Geologists (AAPG)
Webinar
Virtual Webinar
Thursday, 24 September 2020, 8:30 p.m.–9:30 p.m.

In the past 3 decades the sequence stratigraphy jargon has proliferated, resulting in multiple definitions of the same surface or new surfaces and units based on drawings of deposition in response to relative changes in sea level. The close association between base-level changes, the formation of surfaces, and specific stratal stacking that define systems tracts are at the heart of the confusion. This webinar is proposed a back-to-basics approach, emphasizing key observations that can be made from any geologic data: lithofacies, lithofacies association, vertical stacking, stratal geometries, and stratal terminations.

Show more
American Association of Petroleum Geologists (AAPG)
Online e-Symposium
Tuesday, 9 September 2014, 2:00 p.m.–3:00 p.m.

Water cut is a big factor in gauging the success of horizontal drilling in the Mississippi Lime Play (MLP). The contributing factors are related in part to the spectrum of producing lithofacies and reservoir quality encountered that varies laterally and vertically, sometimes dramatically. 

American Association of Petroleum Geologists (AAPG)
DL Abstract

President Biden has laid out a bold and ambitious goal of achieving net-zero carbon emissions in the United States by 2050.  The pathway to that target includes cutting total greenhouse gas emissions in half by 2030 and eliminating them entirely from the nation’s electricity sector by 2035. The Office of Fossil Energy and Carbon Management will play an important role in the transition to net-zero carbon emissions by reducing the environmental impacts of fossil energy production and use – and helping decarbonize other hard-to abate sectors.

Show more

Request a visit from Jennifer Wilcox!

American Association of Petroleum Geologists (AAPG)
VG Abstract

In comparison with the known boundary conditions that promote salt deformation and flow in sedimentary basins, the processes involved with the mobilization of clay-rich detrital sediments are far less well established. This talk will use seismic examples in different tectonic settings to document the variety of shale geometries that can be formed under brittle and ductile deformations.

Request a visit from Juan I. Soto!

American Association of Petroleum Geologists (AAPG)
DL Abstract

This presentation is a survey of subsurface machine learning concepts that have been formulated for unconventional asset development, described in the literature, and subsequently patented. Operators that utilize similar subsurface machine learning workflows and other data modelling techniques enjoy a competitive advantage at optimizing the development of unconventional plays.

Request a visit from Shane Prochnow!

American Association of Petroleum Geologists (AAPG)
VG Abstract

Production from unconventional petroleum reservoirs includes petroleum from shale, coal, tight-sand and oil-sand. These reservoirs contain enormous quantities of oil and natural gas but pose a technology challenge to both geoscientists and engineers to produce economically on a commercial scale. These reservoirs store large volumes and are widely distributed at different stratigraphic levels and basin types, offering long-term potential for energy supply. Most of these reservoirs are low permeability and porosity that need enhancement with hydraulic fracture stimulation to maximize fluid drainage. Production from these reservoirs is increasing with continued advancement in geological characterization techniques and technology for well drilling, logging, and completion with drainage enhancement. Currently, Australia, Argentina, Canada, Egypt, USA, and Venezuela are producing natural gas from low permeability reservoirs: tight-sand, shale, and coal (CBM). Canada, Russia, USA, and Venezuela are producing heavy oil from oilsand. USA is leading the development of techniques for exploring, and technology for exploiting unconventional gas resources, which can help to develop potential gas-bearing shales of Thailand. The main focus is on source-reservoir-seal shale petroleum plays. In these tight rocks petroleum resides in the micro-pores as well as adsorbed on and in the organics. Shale has very low matrix permeability (nano-darcies) and has highly layered formations with differences in vertical and horizontal properties, vertically non-homogeneous and horizontally anisotropic with complicate natural fractures. Understanding the rocks is critical in selecting fluid drainage enhancement mechanisms; rock properties such as where shale is clay or silica rich, clay types and maturation , kerogen type and maturation, permeability, porosity, and saturation. Most of these plays require horizontal development with large numbers of wells that require an understanding of formation structure, setting and reservoir character and its lateral extension. The quality of shale-gas resources depend on thickness of net pay (>100 m), adequate porosity (>2%), high reservoir pressure (ideally overpressure), high thermal maturity (>1.5% Ro), high organic richness (>2% TOC), low in clay (<50%), high in brittle minerals (quartz, carbonates, feldspars), and favourable in-situ stress. During the past decade, unconventional shale and tight-sand gas plays have become an important supply of natural gas in the US, and now in shale oil as well. As a consequence, interest to assess and explore these plays is rapidly spreading worldwide. The high production potential of shale petroleum resources has contributed to a comparably favourable outlook for increased future petroleum supplies globally. Application of 2D and 3D seismic for defining reservoirs and micro seismic for monitoring fracturing, measuring rock properties downhole (borehole imaging) and in laboratory (mineralogy, porosity, permeability), horizontal drilling (downhole GPS), and hydraulic fracture stimulation (cross-linked gel, slick-water, nitrogen or nitrogen foam) is key in improving production from these huge resources with low productivity factors.

Show more

Request a visit from Ameed Ghori!

American Association of Petroleum Geologists (AAPG)
DL Abstract

Three-dimensional (3D) seismic-reflection surveys provide one of the most important data types for understanding subsurface depositional systems. Quantitative analysis is commonly restricted to geophysical interpretation of elastic properties of rocks in the subsurface. Wide availability of 3D seismic-reflection data and integration provide opportunities for quantitative analysis of subsurface stratigraphic sequences. Here, we integrate traditional seismic-stratigraphic interpretation with quantitative geomorphologic analysis and numerical modeling to explore new insights into submarine-channel evolution.

Show more

Request a visit from Jacob Covault!

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.

Show more

Request a visit from Keith Gerdes!

American Association of Petroleum Geologists (AAPG)
DL Abstract

For well over a century there have been conflicting indications of the strength of the crust and of faults and what controls them.  Much of our ignorance comes quite naturally from the general inaccessibility of the crust to measurement--in contrast with our understanding of the atmosphere, which is much more accessible to observation as well as more rapidly changing.  Crustal strength is best understood in deforming sedimentary basins where the petroleum industry has made great contributions, particularly in deforming petroleum basins because of the practical need to predict. In this talk we take a broad look at key issues in crustal strength and deformation and what we can learn from boreholes, earthquakes, active fault systems, and toy models.

Show more

Request a visit from John Suppe!

American Association of Petroleum Geologists (AAPG)
DL Abstract

Physics is an essential component of geophysics but there is much that physics cannot know or address. 

Request a visit from John Castagna!

American Association of Petroleum Geologists (AAPG)
VG Abstract

The Betic hinterland, in the westernmost Mediterranean, constitutes a unique example of a stack of metamorphic units. Using a three-dimensional model for the crustal structure of the Betics-Rif area this talk will address the role of crustal flow simultaneously to upper-crustal low-angle faulting in the origin and evolution of the topography.

Request a visit from Juan I. Soto!

American Association of Petroleum Geologists (AAPG)
DL Abstract

Around 170 million years ago, the Gulf of Mexico basin flooded catastrophically, and the pre-existing landscape, which had been a very rugged, arid, semi-desert world, was drowned beneath an inland sea of salt water. The drowned landscape was then buried under kilometers of salt, perfectly preserving the older topography. Now, with high-quality 3D seismic data, the salt appears as a transparent layer, and the details of the drowned world can be seen in exquisite detail, providing a unique snapshot of the world on the eve of the flooding event. We can map out hills and valleys, and a system of river gullies and a large, meandering river system. These rivers in turn fed into a deep central lake, whose surface was about 750m below global sea level. This new knowledge also reveals how the Louann Salt was deposited. In contrast to published models, the salt was deposited in a deep water, hypersaline sea. We can estimate the rate of deposition, and it was very fast; we believe that the entire thickness of several kilometers of salt was laid down in a few tens of thousands of years, making it possibly the fastest sustained deposition seen so far in the geological record.

Show more

Request a visit from Frank Peel!

American Association of Petroleum Geologists (AAPG)

Related Interests