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21.
Angelos Mavromatidis 《Surveys in Geophysics》2006,27(3):277-317
Exhumation (defined as rock uplift minus surface uplift) in the Cooper Basin of South Australia and Queensland has been quantified
using the compaction methodology. The sonic log, which is strongly controlled by the amount of porosity, is an appropriate
indicator of compaction, and hence is used for quantifying exhumation from compaction. The traditional way of estimating exhumation
based on the degree of overcompaction of a single shale unit has been modified and five units ranging in age from Permian
to Triassic have been analysed. The results reveal that exhumation increases eastwards from the South Australia into the Queensland
sector of the basin. The results show that exhumation in Late Triassic – Early Jurassic times, after the Cooper Basin deposition,
seems to be 200–400 m higher than exhumation in Late Cretaceous – Tertiary times, after the Eromanga Basin deposition. This
study has major implications for hydrocarbon exploration. Maturation of source rocks will be greater for any given geothermal
history if exhumation is incorporated in maturation modelling. Exhumation values can also be used to improve porosity predictions
of reservoir units in undrilled targets. 相似文献
22.
Dynamics of a large tropical lake: Lake Maracaibo 总被引：1，自引：0，他引：1
23.
Angelos Mavromatidis 《International Journal of Earth Sciences》2008,97(3):623-634
Seismic reflection profiles indicate the compressive nature of the structural style associated with the major uplift events
in the Cooper–Eromanga Basins. Inversion geometries and reactivated features attest to a period of compression during Late
Triassic–Early Jurassic times. In the Eromanga Basin, compressional structural styles associated with Late Cretaceous–Tertiary
are apparent. Many of the Late Cretaceous–Tertiary structures coincide with exhumation highs in Late Cretaceous–Tertiary times.
The two-layer lithospheric compression model is considered as the most complete explanation of both the uplift of areas subject
to compression and crustal thickening, and of the regional uplift of areas not subject to any apparent Late Cretaceous–Tertiary
compression. In the model, compression and thickening in the lower lithosphere is decoupled and laterally displaced from that
in the upper crust. Thickening of the mantle lithosphere without thickening of the overlying crust can account for the initial
subsidence then uplift of not inverted platform areas. The opening of the Tasman Sea and the Coral Seas can lead to stress
transmission in the interior of the continent. These stresses are likely to generate uplift but cannot explain the distribution
of uplift in areas not subject to compression. 相似文献
24.
The idea that coronal mass ejections (CMEs) pile up mass in their transport through the corona and heliosphere is widely accepted. However, it has not been shown that this is the case. We perform an initial study of the volume electron density of the fronts of 13 three-part CMEs with well-defined frontal boundaries observed with the Solar and Heliospheric Observatory/Large Angle and Spectrometric COronagraph (SOHO/LASCO) white-light coronagraphs. We find that, in all cases, the volume electron density decreases as the CMEs travel through the LASCO-C2 and -C3 fields of view, from \(2.6\,\mbox{--}\,30~\mbox{R}_{\odot}\). The density decrease follows closely a power law with an exponent of ?3, which is consistent with a simple radial expansion. This indicates that in this height regime there is no observed pile-up. 相似文献