ABSTRACT This study is based on petrographic examination (optical, scanning electron microscope, cathodo-luminescence, backscattered imaging, and fluorescence) of 1,350 thin sections as well isotopic compositions carbonates (172 carbon oxygen 118 strontium isotopes), microprobe analyses, fluid inclusion microthermometry cored Jurassic Arab D C members from 16 wells in a field offshore Abu Dhabi, United Emirates. The formation was deposited ramp with barrier islands distal slope setting....

Research Article| November 09, 2018 An emerging thermochronometer for carbonate-bearing rocks: ∆47 /(U-Pb) Xavier Mangenot; Mangenot * 1IFP Energies nouvelles, 92852 Rueil-Malmaison Cedex, France2Institut de Physique du Globe Paris, Sorbonne Paris Cité, Université Diderot, UMR 7154 CNRS, F-75005 France *E-mail: xavier-mangenot@club.fr Search other works by this author on: GSW Google Scholar Marta Gasparrini; Gasparrini Axel Gerdes; Gerdes 3Institute of Geosciences, Goethe University, 60438...

Abstract The reconstruction of past diagenetic conditions in sedimentary basins is often under‐constrained. This results from both the analytical challenge performing required analyses on minute sample amounts available mineral phases and lack tracers for some parameters. carbonate clumped isotope thermometry (Δ 47 ) opens new perspectives unravelling temperatures together with source their parent fluids, two parameters that are otherwise impossible to constrain absence exploitable fluid...

Abstract The Yacoraite Formation (Salta rift, Argentina) consists of Maastrichtian–Danian lacustrine carbonate and siliciclastic deposits with interbedded volcanic ash layers, organized in four third‐order stratigraphic sequences. It offers the exceptional opportunity to jointly apply situ zircon U‐Pb geochronology that resulted two distinct depositional age depth models. Ages youngest population from layers were linearly interpolated derive a model. A model was instead obtained dated phases...

Abstract The process of recrystallization affecting dolomitic successions remains a longstanding enigma in carbonate research. Recrystallization influences the accuracy genetic dolomitization models as well prediction porosity and permeability distribution within reservoirs. We investigate early-formed dolomites Upper Jurassic Arab Formation reservoir (Arabian Platform, United Emirates), where is not easily ascertained based on petrographic O-C-Sr isotope analyses. Conversely, application...

Abstract This study presents a new approach to geobarometry by combining fluid inclusion and clumped isotope (Δ 47 ) thermometry on carbonate minerals. The offset between homogenisation temperatures of primary inclusions with known composition Δ the host mineral allows direct estimation pressure at time crystallisation. is illustrated via hydrothermal dolomite samples from Variscan foreland fold‐and‐thrust belt in northern Spain. Clumped analyses yield crystallisation (107–168°C) which are...

Abstract The architecture of lacustrine systems is the result complex interaction between tectonics, climate and environmental parameters, constitute main forcing parameters on lake dynamics. Field analogue studies have been performed to better assess such interactions, their impact facies distribution stratigraphic systems. Yacoraite Formation (Late Cretaceous/Early Palaeocene), deposited during sag phase Salta rift basin in Argentina, exposed world‐class outcrops that allowed dynamics this...

Studies on extant spores belonging to the family of clubmosses (e.g., Lycopodium) have shown that micro-FTIR spectroscopic analyses can reveal quantity UV-absorbing compounds (UACs) in organic walls and thus be used reconstruct UV-B radiation ozone layer degradation rates at time formation spore. Here, we present new data from Toarcian age sporomorphs marine organic-rich marls shales, deposited offshore shoreface environments a core Paris Basin, France, evaluate applicability this method...

Abstract δ 18 O and δD of fluid inclusions in carbonates provide insights into temperatures chemical compositions prevailing during the carbonate precipitation, however, various analytical restrictions limit a wider application this proxy. This paper presents new isotopic line coupled to an online cavity ring‐down spectrometer that increased productivity up 10 samples per working day. efficiency allowed for first time assess reliability large set water with size ranging from 0.1 1 µL. Good...

Abstract A late diagenetic dolomitization pervasively affected Carboniferous carbonates of the Variscan Cantabrian Zone (NW Spain). The process generated replacive and void-filling dolomite phases, spatially related with various calcite cements. nature fluids has been investigated by cryo-Raman spectroscopy, i.e., a combination Raman spectroscopy low-temperature microthermometry, which reveals in great accuracy salinity major types dissolved cations anions single fluid inclusions. Fluid...

Abstract In southern Tuscany (central Italy), deep to shallow geothermal systems were active since the Pleistocene and comprise fluids carrying variable amounts of CO 2 . The Monte Amiata fields include two main reservoirs: a one located in Palaeozoic metamorphic succession (1300–3000 m deep) belonging Tuscan ‘basement’ hosted Mesozoic sedimentary (500–1000 Nappe. Multiple sets calcite veins investigated some outcrops Nappe exposed area surroundings. Two fluid characterized: former related...

Abstract A regional study on late burial, syntectonic dolomites and calcite quartz veins occurring in the hemipelagic T riassic– J urassic succession of L agonegro B asin (southern pennines) was carried out by integrating fieldwork with structural, fluid inclusion, geochemical investigations both surface subsurface samples. The main goal to characterize different parent fluids, channeled along a major, sequence thrust zone. We also investigated from deeper tectonic mélange results point that...

Abstract In recent years stylolites, which are rough dissolution surfaces commonly found in carbonates, have been used for paleopiezometry estimates. The Stylolite Roughness Inversion Technique (SRIT) applied on sedimentary bedding-parallel stylolites (BPS) grants access to the maximum principal vertical stress experienced by host carbonates and thus their burial paleo-depth. This study reports results of SRIT a BPS population hosted carbonate platform reservoirs Paris basin sub-surface...

The Triassic pelagic carbonates of the Lagonegro Units from southern Apennines fold and thrust belt host discordant bodies dolostone. These rocks show textural features typical zebra or saddle dolomites. In this contribution, results field observations, petrography geochemical analyzes performed on samples three different outcrops are presented.Field data indicate that peculiar zebra-type rock brecciated fabrics were controlled by regular bedding micritic, limestones. dolomitization resulted...

Abstract An increasing need exists to quantify the impact of diagenesis on complex and heterogeneous geological reservoirs predict related field‐scale porosity‐permeability distribution. Development approaches diagenetic events is an important step towards construction integrated numerical reservoir models predicting successive petrophysical properties at various scales. This article describes two distinct approaches, which allow capturing, quantifying explaining heterogeneities Jurassic...