Thermal structure of continental upper mantle inferred from S-wave velocity and surface heat flow

Röhm, A.H.E.; Snieder, Roel; Goes, Saskia; Trampert, Jeannot

doi:10.1016/s0012-821x(00)00209-0

Cited by 77 publications

(53 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This method, which is distinct from but complements geothermal modeling of heat flow data, provides a means to estimate the 3D upper-mantle temperature structure from measured seismic velocities. This temperature estimation method has been successfully applied in the studies of several continents (Cammarano et al, 2003;Goes and Van der Lee, 2002;Goes et al, 2000;Rohm et al, 2000;Shapiro and Ritzwoller, 2004). An and Shi (2006) calculated the 3D upper-mantle temperature structure of the Chinese continent from seismic velocities measurements in 3D, and used these results to estimate the lithospheric thickness on a 1°× 1°grid, as shown in Fig.…”

Section: Gravitational Effect Of the Undulated Mantle Lithospherementioning

confidence: 99%

Mantle origin of the Emeishan large igneous province (South China) from the analysis of residual gravity anomalies

Deng

Zhang

Mooney

et al. 2014

Lithos

View full text Add to dashboard Cite

Section: Gravitational Effect Of the Undulated Mantle Lithospherementioning

confidence: 99%

Mantle origin of the Emeishan large igneous province (South China) from the analysis of residual gravity anomalies

Deng

Zhang

Mooney

et al. 2014

Lithos

View full text Add to dashboard Cite

“…More globally, variations in the depths to the 410 and 660 km discontinuities imply that temperatures deep beneath some continents are as much as 100 ЊC lower than those beneath the oceans (e.g., Gossler and Kind, 1996). Seismic velocity, constrained by heat flow data, provides an estimate of the continental geotherm (Röhm et al, 2000;Goes and van der Lee, 2002), revealing the expected variation in the lithosphere and different lithospheric thicknesses according to lithospheric type. At depths between 100 km (for tectonic provinces) and 200 km (for cratons), the geotherms become parallel to mantle adiabats, indicating the convecting sublithospheric mantle with a T p in the range 1050-1350 ЊC (Fig.…”

Section: Subcontinental Geothermmentioning

confidence: 99%

Continental geotherm and the evolution of rifted margins

Reston

Morgan

2004

Geol

View full text Add to dashboard Cite

Models of melting accompanying mantle upwelling predict far more melt than is observed at nonvolcanic margins. The discrepancy may be explained if the paradigm of a uniform asthenosphere is incorrect. Work on the velocity structure of the continents has shown that the convecting sublithospheric mantle may have a potential temperature as low as 1200 ؇C, ϳ100 ؇C cooler than that beneath the oceans. The continental geotherm derived from studies on xenoliths brought up by kimberlites is also compatible with a cool sublithospheric mantle except where perturbed by mantle plumes. Upwelling of such cool mantle during rifting leads to little melt production, even for rapid extension rates, explaining the formation of amagmatic margins away from mantle plumes. However, the transition to seafloor spreading and the development of normal-thickness oceanic crust requires the invasion of the amagmatic rift by hotter oceanic asthenosphere and/or plume material. This influx may cause a transient thermal uplift, recorded as a breakup unconformity. Conversely, at volcanic margins, the onset of seafloor spreading is accompanied by the escape of the hot plume puddle along the mid-ocean ridge system away from the volcanic margin, leading to a pulse of rapid subsidence.

show abstract

“…When the lower basal heat flow value (49.0 mW/m 2 ) was inputted into the same geologic model again, the new "simulated" Ro values fit the "measured" Ro values reasonably well, while the "simulated" temperature was much lower than measured BTH below 3500 meters (Figure 15(b)). After testing the steady-state heat flow method with constant heat flow of 54.5 and 49 mW/m 2 and a variable paleoheat flow (Figure 15(c)), the best fit between measured and calculated Ro and temperature was achieved by setting a variable paleoheat flow increasing from background value of 55 mW/m 2 [71,72] to 73.84 mW/m 2 during the continental rift stage and then decreasing to the present heat value during the postrift stage ( Figure 16). Thus, the steady heat flow method with was a variable paleoheat flow used to calculate geothermal history.…”

Section: Geothermal Field and Boundary Conditionsmentioning

confidence: 99%

Reconstruction of the Cenozoic History of Hydrocarbon Fluids from Rifting Stage to Passive Continental Margin Stage in the Huizhou Sag, the Pearl River Mouth Basin

Jiang²,

Jiang

et al. 2017

Geofluids

View full text Add to dashboard Cite

The Eocene lacustrine sediments are the primary source rocks in the Huizhou Sag of the Pear River Mouth Basin. This study employs basin modeling for four representative wells and two profiles in the Huizhou Sag to reconstruct the process of generation, expulsion, migration, and accumulation of hydrocarbon fluids. The Eocene source rocks started to generate hydrocarbon at 33.9 Ma and are currently in a mid-mature and postmature stage. Hydrocarbons are mainly expelled from the Eocene Wenchang Fm, and the contribution of the Eocene Enping formation is minor. Under the driving forces of buoyancy and excess pressure, major hydrocarbons sourced from the Eocene source rocks firstly migrated laterally to the adjacent Eocene reservoirs during the postrift stage, then vertically via faults to Oligo-Miocene carrier beds, and finally laterally to the structural highs over a long distance during the Pliocene-Quaternary Neotectonic stage, which is controlled by both structural morphology and heterogeneity of carrier beds. Fault is the most important conduit for hydrocarbon fluid migration during the Neotectonic stage. Reactivation of previous faults and new-formed faults caused by the Dongsha Movement (9.8-4.4 Ma) served as vertical migration pathways after 10.0 Ma, which significantly influenced the timing of hydrocarbon accumulation in the postrift traps.

show abstract

Thermal structure of continental upper mantle inferred from S-wave velocity and surface heat flow

Cited by 77 publications

References 48 publications

Mantle origin of the Emeishan large igneous province (South China) from the analysis of residual gravity anomalies

Mantle origin of the Emeishan large igneous province (South China) from the analysis of residual gravity anomalies

Continental geotherm and the evolution of rifted margins

Reconstruction of the Cenozoic History of Hydrocarbon Fluids from Rifting Stage to Passive Continental Margin Stage in the Huizhou Sag, the Pearl River Mouth Basin

Contact Info

Product

Resources

About