Sedimentologic and sequence stratigraphic interpretation. These may be the lower frequency subdivisions that can be interpreted from seismic, or higher frequency subdivisions outcrop and well logs. Deepwater oxygen consumption 50% of o2 consumption below m occurs in sediments 2. The platform is divided into a lower regressive part, the glandasse formation and an upper transgressive part the urgonian limestone formation. Depositional history, sequence stratigraphy and diagenesis. Porosity and diagenesis in a sequence stratigraphic framework. Dynamic forward modelling of carbonate diagenesis and sequence stratigraphy relies on the understanding of the different process which provide a high resolution prediction of the geometry of porous and permeable zones within carbonate reservoirs. Sequence stratigraphy is jargonladen and typically presented in an overly complicated manner which turns many students off. In this abstract, we consider the interrelationship between palaeoclimate, sequence stratigraphy and diagenesis. Indonesia malaysia sumatra vietnam phillipines north america, the middle east, and europe. The facies are characterized by a reef core, back reef and outer lagoon, shoal, inner lagoon, and tidal flat carbonate sequences. The integrated methodology provides the lithologic expression of a paleogene mixed carbonatesiliciclastic succession to be inserted into the gross geometric framework identified through seismic stratigraphic mapping.
Sequence stratigraphy, chemostratigraphy, and diagenesis of. In these cases we have extensive experience of undertaking fieldwide studies using logdefined facies and sequence stratigraphic schemes, from which. This lab is a simple and straightforward introduction to sequence stratigraphic. Porosity and diagenesis in a sequence stratigraphic framework, 20, 392 pages, clyde h. The distribution of diagenetic fabrics was compared to a sequence stratigraphic framework. Ferroan dolomite cementation is closely linked to genetically related facies parasequences, systems tracts, sequences andor major stratal surfaces transgressive and. The temperature of sedimentary rocks at surface and during burial has at least two main influences on diagenesis. Evolution of cretaceous to eocene alluvial and carbonate. 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. Highresolution sequence stratigraphy and diagenesis of mixed. Pdf introductioncarbonate diagenesissequence stratigraphycarbonate diagenesis and relative sealevel falls lstcarbonate diagenesis. Highresolution sequence stratigraphy of paleogene, nontropical.
Sequence stratigraphy american association of petroleum. Carbonate sequence stratigraphy, diagenesis, and porosity prediction. The sequence stratigraphic development of the subsurface paleogene, albemarle basin, north carolina, was defined using well cuttings and wireline logs tied into largely. By contrast, the largescale outcrops in west texas and southeastern new mexico provide 1, 2, and 3dimensional displays of leonard facies, diagenesis, and sequence stratigraphic relationships that form a fundamental basis for improving interpretation of subsurface data sets. Sedimentological indicators of paleoenvironments and. The multifarious processes that come under the term diagenesis are chemical, physical, and biological. At the sequence scale, early diagenesis is controlled by the degree of relative sealevel fall and subsequent subaerial exposure at the end of the highstand systems tract. Siliciclastic sequence stratigraphy in well logs, cores, and outcrops. Sedimentologic and sequence stratigraphic interpretation of a mixed carbonate siliciclastic ramp, midcontinent epeiric sea, middle to upper ordovician decorah and galena formations, wisconsin y. If a sequence is bounded above by a typet sequence boundary and there is evidence of a period of subaerial exposure then the effects of surface related diagenesis. The paleogene albemarle basin of eastern north carolina u. Carbonate diagenesis and sequence stratigraphy sedimentology.
Carbonate reservoirsporosity evolution and diagenesis in. Sequence stratigraphy as a sequence stratigraphy as a. The direct transposition of the stratigraphic model for a siliciclastic shelf to its carbonate counterpart, the carbonate shelf, assumes that the two systems respond in a very similar way to changes of relative sea. Chapter 8 summary of early diagenesis and porosity modification of carbonate reservoirs in a sequence stratigraphic and climatic framework pages 245289 download pdf. Carbonate sequence stratigraphy introduction this lab introduces you to carbonate sequence stratigraphy using knowledge from lecture, thin sections, hand samples, facies analysis, and facies correlations. Carbonate diagenesis and sequence stacking patterns. Carbonate platforms are increasingly being studied using sequence stratigraphic concepts and models borrowed from the study of siliciclastic shelves in passive margin settings. Distribution pattern of carbonate cements of the middle to upper devonian zakeen formation of southern zagros, suggests a close relationship between relative sealevel changes and diagenetic processes. Sedimentologic and sequence stratigraphic interpretation of a mixed carbonatesiliciclastic ramp, midcontinent epeiric sea, middle to upper ordovician decorah and galena formations, wisconsin, advances in carbonate sequence stratigraphy. Integrated diagenesis and sequence stratigraphic study of. Almost continuous exposure along the dead sea rift approximately at right angles to the. This masterclass explains the principles of carbonate sequence stratigraphy and its role in understanding the distribution. Introductioncarbonate diagenesissequence stratigraphycarbonate diagenesis and relative sealevel falls lstcarbonate diagenesis during. Limestone sequence consists of two depositional subsequences.
Its a 36 x 24 pdf that you can print and hang for quick reference to the essential features of sequence stratigraphy. Mixed carbonatesiliciclastic sequence stratigraphy of a. Sea level cycles and carbonate sequences aapg wiki. It was just recently documented that diagenetic alterations such as calcite and dolomite cementation might be distributed at sites coincident with sequence stratigraphic surfaces tucker, 1993. Pdf the patterns of carbonate diagenesis are related to relative sealevel changes and climate, and various models are put forward placing. Sequence stratigraphy, chemostratigraphy, and diagenesis.
Carbonate reservoirs porosity evolution and diagenesis in a sequence stratigraphic framework article in marine and petroleum geology 1910. This becomes more important where the field has little or no core, poor seismic coverage, or where the stratigraphy is lithologically monotonous due to facies e. Highresolution sequence stratigraphy and diagenesis of. Pdf carbonate sequence stratigraphy, diagenesis, and. Impact of sequence stratigraphy, depositional facies. Wireline logs usually offer the best solution to this problem. The future potential of the basins are also discussed, including any additional plays, the key uncertainties and any. The university of texas at austin bureau of economic geology university station, box x austin, texas 7878924 512 4710366 email address.
Carbonate diagenesis and role of associated siliciclastics. While sequence stratigraphy is a useful tool for predicting the distribution of facies away from control points catuneanu et al. Sedimentologic and sequence stratigraphic interpretation of a mixed carbonate siliciclastic ramp, midcontinent epeiric sea, middle to upper ordovician decorah and galena formations, wisconsin, advances in carbonate sequence stratigraphy. Relative changes of sea level create space for sediment accumulation called accommodation space. Carbonate sediments and their diagenesis, second edition developments in sedimentology. Sequence stratigraphy in carbonate and siliciclastic. The sequence stratigraphic framework is based on the sedimentological analysis, correlation of stratigraphic time surfaces and vertical stratigraphic sections, oxygen and carbon stable isotope profiles, and gammaray logs. Early diagenesis in marine sediments mit opencourseware. Ramp model and sequence stratigraphic context based on svalbard outcrop. Linking diagenesis to sequence stratigraphy an integrated approach for reservoir characterization of the coniaciansantonian mixed siliciclasticcarbonate matulla formation, west central sinai, egypt. Hoppie3 abstract we discuss the origin and sequence stratigraphic implications of physical properties and mineralogical variations in the. Depositional history, sequence stratigraphy and diagenesis of.
Sequence stratigraphy is rooted mainly in seismic stratigraphic sequence analysis, and its strength lies in its potential to. The purposes of this association are to advance the science of geology. This lab is a simple and straightforward introduction to sequence stratigraphic interpretations of a carbonate platform using a combination of facies analysis, facies correlations, hand samples, thin sections, and is followed up by students reconstructing the platform. Stratigraphic setting the studied succession is an unconformity bounded sequence fig. Diagenesis and reservoir quality of late palaeozoic. Sequence stratigraphy from outcrop scale data requires the completion of several steps during the course of data analysis. Chapter 9 summary of early diagenesis and porosity modification of carbonate reservoirs in a sequence stratigraphic and climatic framework clyde h. When done correctly, sequence stratigraphic interpretations commonly provide new understanding of the evolution of stratal successions and new knowledge of how basins fill. Relationships between sequence stratigraphy and diagenesis of. Siliciclastic sequence stratigraphy in well logs, cores. Sequence stratigraphic concepts will be applied to examples from areas including. On a longer time scale, greenhouse to icehouse conditions occur approximately every 100 ma. Sequence stratigraphy offers a more extensive model to predict the distribution pattern of carbonate facies and paleoenvironments in response to various depositional and erosion processes associated with changes in sealevel. Developments in sedimentology carbonate reservoirs porosity.
This work examines the different effects meteoric versus marine diagenesis had on cambroordovician tidal sandstones during episodes of fluctuating sea level. The two subsequences within the maryville sequence consist of a combination of aggradational, retrogradational, and progradational. This means that the processes responsible for known portions of a geological section can be. Application to reservoirs, outcrops and models, paul m. Transgressiveregressive tr sequence parasequences sequences in fluvial systems. Fluvialtidal sedimentology provides information on the tidalfluvial transition, the transition zone between river and tidal environments, and includes contributions that address some of the most fundamental research questions, including how the morphology of the tidalfluvial transition zone evolves over short days and long decadal time periods and for different tidal and fluvial. Request pdf on dec 1, 2003, augustus o wilson and others published carbonate reservoirsporosity evolution and diagenesis in a sequence stratigraphic framework find, read and cite all the. Sequence stratigraphy as a concrete stratigraphic discipline abstract sequence stratigraphy is a stratigraphic discipline in which stratigraphic surfaces that represent changes in depositional trend are used for correlation and for defining specific types of sequence stratigraphic units. Burial diagenesis and cementation may thus be episodic on timescales associated with palaeoclimatic and sequence stratigraphic events occurring on the surface, a few metres to thousands of metres above the zone where diagenesis is occurring. You will identify systems tracts and reconstruct carbonate platform morphologies through time using sequence stratigraphic correlations. Low and variable preservation rates of biogenic components and the interpretation of the sedimentary record b. The arrajmah group miocene carbonate rocks record two 2nd order supersequences 97 m maximum thickness. Sequence stratigraphy in carbonate and siliciclastic systems. Elseviers developments in sedimentology book series is designed to provide a comprehensive source of detailed information on all aspects of sedimentology.
Carbonate sediments and their diagenesis, second edition. The deposition facies within sequence stratigraphic framework is the key factor controlling the primary porosity and permeability of sandstones, sand body geometry and architecture, porewater chemistry, and spatial and temporal distribution of early diagenetic alteration morad et al. Concepts of sequence stratigraphy as applied to carbonate depositional systems. Sequence stratigraphy of the mixed carbonatesiliciclastic. Distribution of diagenetic alterations within depositional. In all fields core represents such a minuscule percentage of the total rock volume that careful extrapolation of this data is critical. Combining eustatic sea level change with tectonic subsidence produces relative changes of sea level. A sequence stratigraphic, chemostratigraphic and diagenetic study of the middle to late miocene rocks in the cyrenaica, northeast libya, extends from the northwestern part of aljabal alkhdar. Palaeoclimate, sequence stratigraphy and diagenesis. Sequence stratigraphic controls of clastic dia genesis. Sequence stratigraphy in carbonate and siliciclastic systems 5th 9th october 2015 at kuala lumpur, malaysia course overview case studies include. Initially, a rise in relative sea level rsl resulted in deposition of transgressive systems tract sands directly onto crystalline basement. Early diagenesis and atmospheric oxygen long time scales c. Carbonates have several aspects that make their response to relative sealevel changes and the character of their sequence stratigraphic elements somewhat different.
Until recently, sequence stratigraphic and diagenetic techniques have been employed independently to study clastic reservoirs. Topics include analytical techniques to regional or geodynamical aspects of sedimentary systems and basin analysis. Implications of physical properties and mineralogical variations1 adam vecsei2 and bryce w. Application of the forward modelling of sequence stratigraphy. Highresolution sequence stratigraphy of paleogene, nontropical mixed carbonatesiliciclastic shelf sediments, north carolina coastal plain, u. Such withintrend facies contacts may be marked on a sequence stratigraphic crosssection only after the sequence stratigraphic framework has been constructed. Chapter 2 the application of the concepts of sequence stratigraphy to carbonate rock sequences. Everyday low prices and free delivery on eligible orders. Why paleoclimate is an issue during meteoric diagenesis. Master thesis in geosciences 1 depositional environment, sequence stratigraphy and reservoir properties of an eocene mixed siliciclastic carbonate succession in the ainsa basin, southern pyrenees asfaw tenna woyessa. Sequence stratigraphy is a powerful tool to reveal the stratigraphic architecture of a sedimentary system. Porosity, evolution and diagenesis in a sequence stratigraphic framework, volume 55 1st edition. Application of sequence stratigraphic concepts to the.
The diagram in figure 1 shows third, fourth, and fifthorder sea level cycles and a composite curve of all three. Wade, the impact of global tectonics and biologic evolution on the carbonate system, carbonate reservoirs porosity and diagenesis in a sequence stratigraphic framework, 10. Diagenesis and sequence stratigraphy have been formally treated as two independent disciplines in sedimentary geology. Initially, a rise in relative sea level rsl resulted in deposition of transgressive systems tract sands directly onto crystalline. Carbonate reservoirs porosity evolution and diagenesis in. Download a copy of the uga stratigraphy labs sequence stratigraphy poster. A set of carbonate sequence stratigraphy exercises click on the highlighted title above to access the exercises that are available on this site to examine the hierarchy of scales expressed by carbonate strata.
Depositional sequences, diagenesis and structural control of the. Concepts for highresolution correlation of time and facies is a must volume for petroleum geologists. Link to a page that lists some of the literature on the carbonate sedimentary record and how its sequence stratigraphic character varies in response to base level change, usually eustasy and gain access to. Porosity evolution and diagenesis in a sequence stratigraphic framework developments in sedimentology. Deepdyve is the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Read, chairman department of geological sciences, virginia tech abstract the sequence stratigraphic development of the subsurface paleogene, albemarle. The american association of petroleum geologists is an international organization with over 38,000 members in 100plus countries. They include compaction, deformation, dissolution, cementation. The sequence stratigraphic studies included in this publication develop a better framework for interpreting depostional and diagenetic processes. Sequence stratigraphic controls on earlydiagenetic. Sedimentologic and sequence stratigraphic interpretation of a. The boundary between the two subsequences is not a sequence boundary, because it does not separate rocks deposited in different environmental regimes. The series encompasses research into sediments and sedimentary rocks.
Sedimentologic and sequence stratigraphic interpretation of a mixed carbonatesiliciclastic ramp, midcontinent epeiric sea, middle to upper ordovician decorah and galena formations, wisconsin y. This study utilizes terrestrial sequence stratigraphy and geochemical weathering proxies in paleosols to establish a sequence stratigraphic framework and quantify paleoclimatic conditions in devonian strata of new york. Carbonate sediments and their diagenesis, second edition developments in sedimentology bathurst, r. The bottom three represent facies contacts developed within systems tracts. Nov 22, 2011 this work examines the different effects meteoric versus marine diagenesis had on cambroordovician tidal sandstones during episodes of fluctuating sea level. Carbonate sequence stratigraphy although most of this website focuses on shallowmarine siliciclastic systems, sequence analysis can be just as readily applied to carbonate systems. In both cases, porosity is best developed in particular facies and during preferred sequence stratigraphic positioning. The patterns of carbonate diagenesis are related to relative sealevel changes and climate, and various models are put forward placing the diagenesis into the context of sequence stratigraphy and.