TY  - DATA
AU  - Planke,Sverre
AU  - Rabbel,Ole
AU  - Galland,Olivier
AU  - Millet,John M.
AU  - Manton,Ben
AU  - Jerram,Dougal A.
AU  - Palma,Octavio J.
AU  - Spacapan,Juan B.
ED  - Simposio de Geofísica (2018 nov. 5 - 9 : Mendoza)
TI  - Seismic imaging and petroleum implications of igneous intrusions in sedimentary basins constrained by outcrop analogues and seismic data from the Neuquén basin and the ne Atlantic
U1  - 068.82 553.28 C62 2018 0015644 
KW  - Neuquén
N2  - Igneous sheet intrusions are commonly present in prospective sedimentary basins worldwide and may have a wide impact on all aspects of a working petroleum system including maturation, migration, and trapping of hydrocarbons. We have interpreted a major sill complex of 80,000 km2 in the Vøring and Møre basins offshore mid-Norway based on seismic characteristics such as high amplitude reflections and saucer-shaped geometries. The sills are commonly associated with pipe-like hydrothermal vent complexes. However, only a few intrusions and vents have been drilled in this region. Recently we have conducted field work in the Neuquén Basin, Argentina, on kilometer-scale outcrop sections where sill complexes are intruded into Cretaceous host rocks, in order to better constrain the seismic wave propagation and imaging implications of sill-sediment complexes. Seismic modeling studies based on field analogues represent an important tool to close the scale gap between observations from outcrops and seismic data and to support seismic interpretation. Virtual outcrop models are generated based on photogrammetric imaging, and seismic properties are constrained from borehole data. Our results indicate that the seismic signatures of outcrop-scale geological features observed in field analogues are characterized by frequency-dependent interference and strong variations depending on the elastic properties of both host rock and sills. The high velocity of intrusions leads to strong attenuation, offset-dependent tuning, post-critical reflections, and converted waves. The results from the integrated modeling approach have led to more reliable interpretations of the presence, thickness, and distribution of sills in seismic data in volcanic basins, and an understanding of the implications of sills on the hydrocarbon system in extensional and compressional basins
UR  - https://biblioteca.iapg.org.ar/ArchivosAdjuntos/Conexplor2018/SGeof/1505.pdf
ER  -