| Titre | The use of titania polymorphs as indicator of mesodiagenesis during hydrocarbon charge |
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| Auteur | Imperial, A; Pe-Piper, G ; Piper, D J W; Clyburne, J |
| Source | Marine and Petroleum Geology vol. 149, 106075, 2022 p. 1-19, https://doi.org/10.1016/j.marpetgeo.2022.106075 |
| Image |  |
| Année | 2022 |
| Séries alt. | Ressources naturelles Canada, Contribution externe 20220441 |
| Éditeur | Elsevier |
| Document | publication en série |
| Lang. | anglais |
| DOI | https://doi.org/10.1016/j.marpetgeo.2022.106075 |
| Media | papier; numérique; en ligne |
| Formats | pdf |
| Province | Région extracotière de l'est |
| Lat/Long OENS | -61.0000 -57.0000 43.0000 42.0000 |
| Sujets | grès; titane; migration des hydrocarbures; Bassin Néo-Écossais; minéralogie; stratigraphie; géochimie; Jurassique; Crétacé |
| Illustrations | cartes de localisation; coupes stratigraphiques; tableaux; spectres; photographies; images; diagrammes de distribution; diagrammes binaires |
| Programme | Les géosciences pour les nouvelles sources d'énergie Analyse des bassins frontaliers |
| Diffusé | 2022 12 29 |
| Résumé | (disponible en anglais seulement)
Authigenic titania (TiO2) minerals are observed in the Upper Jurassic-Lower Cretaceous pro-deltaic reservoir sandstones of the Scotian Basin. Although
diagenetic rutile is rare, relatively large amounts of diagenetic anatase and brookite are present. Anatase is mostly early diagenetic whereas brookite is usually late diagenetic and is abundant in reservoir sandstones above the free-water level. The
availability and mobility of Ti during late diagenesis is attributed to the dissolution of Ti-bearing minerals enhanced by Ti complexes formed from hydrocarbon-rich and highly saline fluids. This study suggests that the precipitation of late
diagenetic brookite, rather than anatase or rutile, may be due to the incorporation of Fe and V during hydrocarbon charge and the presence of Cl- in circulating fluids. In addition, the chemical composition, timing and distribution of the diagenetic
titania polymorphs relative to other diagenetic minerals further constrains the overall paragenetic evolution of the basin, and thus illustrates the relationship between titania minerals, hydrocarbon charge and fluid conditions in the
basin. |
| Sommaire | (Résumé en langage clair et simple, non publié)
Le mouvement de l'élément titane dans les bassins pétroliers est favorisé par le mouvement du pétrole et de l'eau salée. La croissance de
minéraux particuliers de Ti dans les grès réservoirs indique la présence d'hydrocarbures. |
| GEOSCAN ID | 331200 |
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