Heat-flow measurements at shot points along the 1978 Saudi Arabia seismic deep-refraction line; Part II, Discussion and interpretation

Gettings, M.E.

doi:10.3133/ofr82794

Cited by 11 publications

(19 citation statements)

References 28 publications

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“…1b), but significantly deviates from that of the Saudi Arabian part of the shield (36-45 mW m -2 ; Gettings, 1982;Gettings and Showail, 1982). It is within the range of values reported for southern Syria (50-88 mW m -2 ; Matviyenko et al, 1993).…”

Section: Discussionmentioning

confidence: 89%

“…In the previous study on Jordan heat flow (Galanis et al, 1986) An additional source of error is the annual climatic effect that thermal logs at shallow (< 100 m) depths experience. The heat flow in inland southwestern Saudi Arabia (Gettings, 1982;Gettings and Showail, 1982) was determined in ≤ 70-m-deep boreholes drilled as shot holes for a seismic transect, with the heat-flow determination interval sometimes being smaller. In addition to this limitation, questions arise about the validity of the thermalconductivity values that were assigned to the interval temperature gradients.…”

Section: Discussionmentioning

confidence: 99%

“…The bulk of previously reported heat-flow values (e.g., 36-45 mW m -2 , Gettings, 1982, Gettings andShowail, 1982; 42 mW m -2 , Galanis et al, 1986) aided to the widely accepted concept of the Arabian Shield being a province of low heat flow (e.g., McGuire, 1988;Stein et al, 1993;Medaris and Syada, 1998). These former values matched the low heat flow of Archean-consolidated terranes (41 ± 11 mW m -2 ; Rudnick et al, 1998) attributed to a great lithosphere thickness (200-250 km) combined with a low crustal heat production (Nyblade, 1999, and references therein).…”

Section: Discussionmentioning

confidence: 99%

“…The few previous data on conductive surface heat flow in the Arabian Shield and its immediate vicinity range between 36 and 88 mW m -2 (Gettings, 1982;Gettings and Showail, 1982;Galanis et al, 1986;Matviyenko et al, 1993;Milner, 1998). They mainly originated from shallow temperature data measured for a geothermal reconnaissance or constitute byproducts of well logging in hydrocarbon exploration, both not targeted explicitly for the determination of heat flow characterizing lithosphere regimes.…”

Section: Introductionmentioning

confidence: 99%

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The surface heat flow of the Arabian Shield in Jordan

Förster

Masarweh

et al. 2007

Journal of Asian Earth Sciences

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Section: Discussionmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The surface heat flow of the Arabian Shield in Jordan

Förster

Masarweh

et al. 2007

Journal of Asian Earth Sciences

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“…Co‐located stations (AFFS and AFIF) are highlighted with a thick blue line. Black circles indicate heat flow measurements with values in mWm −2 [ Gettings , 1982]. Red diamonds and red crossing‐line pattern represent volcanoes and post‐12 Ma volcanic fields, respectively.…”

Section: Introductionmentioning

confidence: 99%

Upper mantle structure beneath the Arabian Peninsula and northern Red Sea from teleseismic body wave tomography: Implications for the origin of Cenozoic uplift and volcanism in the Arabian Shield

Park

Nyblade

Rodgers

et al. 2007

Geochem Geophys Geosyst

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[1] Upper mantle structure between 150 and 400 km depth is imaged beneath the Arabian Shield and northern Red Sea by modeling P and S traveltime residuals from teleseismic events recorded on the Saudi Arabia National Digital Seismic Network, the 1995-1997 Saudi Arabian PASSCAL experiment, and three permanent stations (RAYN, EIL, and MRNI). Relative traveltime residuals were obtained using a multichannel cross-correlation method and inverted for upper mantle structure using VanDecar's inversion method. The resulting images reveal a low-velocity region ($1.5% for the P model and $3% for the S model) trending NW-SE along the western side of the Arabian Shield and broadening to the northeast beneath the Makkah-Madinah-Nafud volcanic line. We attribute the low velocities to a mantle thermal anomaly that could be as large as 330 K and that is associated with the Cenozoic uplift of and volcanic centers on the Shield. Our tomographic images are not consistent with models invoking separate mantle upwellings beneath the northern and southern regions of the Shield and instead favor single plume or superplume models. We also find little evidence for low velocities beneath the northern Red Sea, suggesting that there might not be a geodynamic link between rifting in the Red Sea and plateau uplift and volcanism in the Shield.

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