Facies associations and sequence stratigraphy of the upper cretaceous lower eocene succession in the farafra oasis, western desert, egypt article pdf available january 2006 with 803 reads. This means that the processes responsible for known portions of a geological section can be. Wiley sequence stratigraphy and facies associations 9781. The stratigraphic architectures of the khan formation deposits are the result of the interplay. Reading, department of earth sciences, parks road, oxford ox1 3pr, uk. This volume arises from several sessions on sequence stratigraphy held at the thirteenth international sedimentological congress, with emphasis on facies associations within a sequence stratigraphic framework. Every reflection package provides information on depositional history and the display on your work station becomes much more interesting. Cretaceous stratigraphy across the basins has been performed by khand. Sequence stratigraphy american association of petroleum. It is properly defined on the basis of color, bedding, composition, texture, fossils, and sedimentary structures. The geometries and so stacking patterns of uncemented carbonates and clastics. Most importantly, however, sequence stratigraphy must be viewed as a tool or approach rather than a rigid template. In recent years there has been a virtual explosion of stratigraphic studies utilizing the principles of sequence stratigraphy.
Facies relationships, associations and sequences, 20 in the subsurface, 21. Sequence stratigraphy is a branch of geology that attempts to subdivide and link sedimentary deposits into unconformity bound units on a variety of scales and explain these stratigraphic units in terms of variations in sediment supply and variations in the rate of change in accommodation space relative sea level, the combination of eustatic sea level and tectonic subsidence. Facies analysis, sequence stratigraphy and chemostratigraphy of the sete lagoas formation bambui group, northern minas gerais state, brazil. The fundamental principles upon which sequence stratigraphy is based are applicable at a broad range of temporal and physical scales. Sedimentary environments is one of the most distinguished and influential textbooks in the earth sciences published in the last 20 years. Pdf sequence stratigraphy and facies associations of falher units.
Paleogeographic reconstruction of facies belts at precise moments in time is the goal of the sequence stratigrapher. Stratigraphy is the science of the layered character of rocks, be these sedimentary, volcanic, metamorphic, or igneous rocks. Sequence stratigraphy as a sequence stratigraphy as a. The first and second editions both won universal praise and became classic works in sedimentology. We understand that this process can be timeintensive and often the features we look for can be subtle. The reader is taken from a basic level to more advanced study techniques. Pdf on jul 27, 2017, wei wei and others published sedimentary facies associations and sequence stratigraphy of source and reservoir rocks of the lacustrine eocene niubao formation lunpola basin. Within the shea creek sequence, five facies associations can be distinguished mainly on the basis of primary sedimentary structures.
Therefore, sequence stratigraphy techniques involve. Sequence and facies architecture is generally controlled by structural movements in lacustrine depositional systems that develop within active graben and halfgraben basins gawthorpe, 1987. Sequence stratigraphy and facies associations of falher units c and d, lower cretaceous, alberta basin, canada. Published online by the canadian society of petroleum. Innovative petrotech solutions, inc course delivery a combination of lectures, examples, handson classroom exercises through 5 days in a workshop format, each day including examples and exercises as described in the outline. Sedimentology and sequence stratigraphy of the lower. Sequence stratigraphy and facies associations wiley. The 2e of seismic stratigraphy and depositional facies models summarizes basic seismic interpretation techniques and demonstrates the benefits of integrated reservoir studies for hydrocarbon exploration. Sequence stratigraphy, a branch of sedimentary stratigraphy, is a methodology that uses the order sedimentary strata accumulated within a framework of major depositional and erosional surfaces to interpret the depositional setting of clastic and carbonate. Gulf coast association of geological societies transactions vol. Lithologically, the formation consists of 44 m of white weathering, light grey, thin to mediumbedded highly fractured limestones with chert nodules. Sequencestratigraphic interpretation of structurally controlled. Now its time for you to deal with what sedimentary and volcanic rocks are like on a larger scale.
An exposure of the lower cretaceous fortress mountain and torok formations along the siksikpuk river in northcentral alaska provides a rare opportunity to observe the stratigraphic contact between these two formations and to interpret the depositional facies and sequence stratigraphy of the exposed strata. A facies is a body of rock with specific characteristics. Sequence stratigraphy analysis of unik field, onshore. Petrographic study of the carbonates shows that both skeletal and nonskeletal grains. Towards the standardization of sequence stratigraphy. To establish the depositional setting of the sedimentary section, sequence stratigraphy uses the geometric arrangement of sedimentary fill, particularly the vertical succession of sedimentary facies geometries and their enveloping surfaces known as stacking satterns.
Sequence stratigraphy on the northwest european margin edited by r. Threedimensional facies architecture analysis using sequence stratigraphy and seismic sedimentology. Threedimensional facies architecture analysis using. Facies characteristics, depositional environment and. Seismic stratigraphy and depositional facies models 1st. For example, characteristic associations of organic microfossils, and particulate organic material, in rocks or sediments, are called palynofacies. Vail riceuniversity, houston, texas it is important to establish the fundamental concepts of sequence stratigraphy and to define terminology critical for the communication of these concepts. Sequence stratigraphy, facies variation and petrophysical properties in deepwater shales, upper cretaceous lewis shale, southcentral wyoming. Geologists, geophysicists and reservoir engineers who want to learn the methodology for applying sequence and seismic stratigraphy to correlation, facies analysis and the delineation of stratigraphic traps. Sequence stratigraphy is the subdivision of the stratigraphic record on the basis of bounding discontinuities. The term facies is widely used in connection with sedimentary rock bodies, but is not restricted to them. Facies analysis, facies associations, facies sequences. Example from the paleogene dongying formation in the bz31.
Since the publication of the last edition, the study of sedimentary environments and facies has made great strides, with major advances in facies modelling. The desert member of the blackhawk formation and the castlegate sandstone in the book cliffs of utah and colorado were analyzed to develop a model of sequence stratigraphy and facies architecture. Facies and sequence stratigraphic analysis of the kometan formation upper cretaceous were studied from kometan village, kurdistan region of northeastern iraq. Key to the construction of the framework is a detailed understanding of the sequence architecture, facies, cyclicity and faciesstacking, and diagenesis. Opalinus clay has an age of approximately 174 million years aaleniantoarcian stages of the lowermiddle jurassic. Facies analysis and sequence stratigraphy of the asmari. Practical sequence stratigraphy was originally published as a fifteenpart series in the canadian society of petroleum geologists monthly magazine, the reservoir, between.
This textbook thoroughly develops fundamental concepts of sequence stratigraphy that links baselevel changes to sedimentary deposits. The rock laboratory is situated in the opalinus clay rock formation, a marly argillaceous claystone with different proportions of sand and carbonates. Although some of these data are obtainable from subsurface data cores and wireline logs, accurate reservoir frameworks must. Sequence stratigraphy is a branch of geology that attempts to subdivide and link sedimentary deposits into unconformity bound units on a variety of scales and explain these stratigraphic units in terms of variations in sediment supply and variations in the rate of change in accommodation space often associated with changes in relative sea level. Depositional sequences and sequence stratigraphic surfaces a depositional sequence is a stratigraphic unit bounded at its top and base by unconformities or their correlative conformities, and typically embodies a continuum of depositional environments, from updip continental to downdip deep marine. In general, facies are not defined for sedimentary rocks by features produced during weathering, metamorphism, or.
Conglomerates and coarse sandstones constitute most of the upper jurassic of the yingen basin, whereas. Sequence stratigraphy, facies variation and petrophysical. A relative sealevel fall on the order of tens of meters or more will lead to a. Western michigan university, 20 the midtolate cretaceous eagle ford shale of south texas is. Purchase of an open document does not constitute license for republication in any form, nor does it allow web posting without prior written permission. Sedimentary facies associations and sequence stratigraphy. The structural evolution and sequencestratigraphic architecture of the synrift. Discrete seismic units are similarly referred to as seismic facies. Request pdf facies characteristics, depositional environment and sequence stratigraphy of the middleupper eocene succession, northern plateau of the bahariya depression western desert, egypt. Topics are presented from a practical point of view and are supported by wellillustrated case histories.
The application of sequence stratigraphy to the fluvial portion of sedimentary basin fills is most challenging, especially where the fluvial deposits under analysis are isolated or far away from coeval shorelines and marine influences. Sequence stratigraphy is based on the assumption that eustatic sealevel is the most important control on stratigraphic geometries and facies distribution and therefore on the distribution of reservoir sands and sealing shales aitken and howell, 1996. Rocks from the subsurface, 22 wireline logs and log facies, 23 sequence stratigraphy, 25 models, 35 3 alluvial sediments, 37 j. Structural controls on stratigraphic sequences and facies associations. Integrating depositional facies and sequence stratigraphy. Sedimentary facies are described in a group of facies descriptors which must be distinct, reproducible and exhaustive. Seismic stratigraphy services applied stratigraphix. Definition facies is a body of rock characterized by a particular combination of lithology, physical and biological structures that bestow an aspect that different from the bodies of rock above, below and laterally adjacent the facies concept refers to the sum of characteristics of a sedimentary unit, commonly at a fairly small cmm scale. Sedimentary facies, depositional environment and sequence. Taking the wenliu area as an example, this chapter aims at addressing researches about another type of river.
Sedimentary facies, process and environmental facies models, sequence stratigraphy. Sequence stratigraphy is the study of sedimentation patterns and facies relationships within a chronostratigraphic framework of erosional or nondepositional surfaces, or their lateral correlative conformities van wagoner et al. Detailed stratigraphy and facies analysis of the paleoproterozoic. Sequence stratigraphy and facies associations wiley online books. Principles of sequence stratigraphy provides an indepth coverage and impartial assessment of all current ideas and models in the field of sequence stratigraphy. The term facies was introduced by the swiss geologist amanz gressly in 1838 and was part of his significant contribution to the foundations of modern stratigraphy. Applying the concepts of sequence stratigraphy, five megasequences have been identified. Sequence stratigraphy and facies associations by henry w. Kendall at the university of south carolina, this website contains numerous still images and interactive animations of sedimentary basin filling, as well as a chalktalk video lecture on the relation of stratigraphic geometry and sealevel changeuniv. Facies associations, sequence stratigraphy and timing of the earliest. The conceptual stratigraphic models are based on first principles and it is the understanding of these first principles rather than memorization of the model that is the key to successful application of sequence stratigraphy. Alongside 3d seismic, longreach horizontal drilling and the application of plate tectonics to exploration, sequence stratigraphy has been one of the greatest scientific advances within the petroleum geology industry of the last 50 years. Published online by the canadian society of petroleum geologists, october, 2009. Sedimentary facies associations and sequence stratigraphy of source and reservoir rocks of the lacustrine eocene niubao formation lunpola basin, central tibet.
745 329 295 749 36 805 610 719 1183 1066 851 490 1453 1379 1360 296 839 1288 289 121 1390 1162 117 959 732 141 393 577 1020 918 881