petrofacies

petrofacies

[¦pe·trō′fā·shēz]
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Three major sandstone petrofacies have been defined on the basis of texture and detrital compositions, diagenetic features, and pore space properties (i.e., pore abundance and type).
The two sandstone petrofacies, highly compacted, ductile lithic-rich, very fine-grained sandstones, and tightly calcite-cemented sandstones may create permeability barriers or baffles embedded in porous reservoir sandstones.
This paper addresses sand petrofacies formed during the Middle Aragonian (14.2Ma) at the Somosaguas palaeontological site (Madrid Basin), the evolution of their source area (Spanish Central System) and the climate that prevailed over the middle Miocene in this area.
5b; Dickinson, 1970), the petrofacies of the sand deposits appear quartz feldespathic in nature with provenance types related to geotectonic settings described by Dickinson et al.
Se realiza un estudio de petrofacies que hacen referencia a las diferencias de tipo composicional dependiendo de las asociaciones de detritos del armazon de la roca, en sentido vertical generando divisiones de tipo informal para cada seccion estratigrafica.
Petrofacies and provenance of the Puente Formation (Middle to Upper Miocene), Los Angeles Basin, southern California: implications for rapid uplift and accumulation rates.
Litoestratigraficamente esta petrofacies marca el contacto inferior de la secuencia de la Formacion Caraigres con las calizas infrayacentes.
We can use the petrofacies that include fluids information as the basic structural units to destruct sand carrier beds.
(1996), in the Orobic Alps the abrupt change from this lithic petrofacies P1 to the quartzo-lithic petrofacies P2, observed in the Inferno Valley (Valtellina, Fig.
Thus, petrofacies are useful for analyzing depositional sequences and, consequently, the organization and develop of the clastic sedimentary record of the basin filling.