scholarly journals Mass wasting at the base of the south central Chilean continental margin: the Reloca Slide

2009 ◽  
Vol 22 ◽  
pp. 155-167 ◽  
Author(s):  
D. Völker ◽  
W. Weinrebe ◽  
J. H. Behrmann ◽  
J. Bialas ◽  
D. Klaeschen
Keyword(s):  
Seismic Reflection ◽  
Tsunami Generation ◽  
Mass Wasting ◽  
Gravity Core ◽  
Seismic Reflection Data ◽  
Central Chile ◽  
James Cook ◽  
Reflection Data ◽  
South Central ◽  
History Of

Abstract. Offshore south central Chile (35° S–42° S), the morphology of the lowermost continental slope and trench floor witnesses a voluminous submarine mass-wasting event. The blocky slide body deposited in the Chile Trench at 73°46´ W 35°35´ S was targeted for study during RRS JAMES COOK Cruise JC23 and termed Reloca Slide. Its size of about 24 km3, its steep and high headscarp, the spatial distribution of slide deposits and the cohesive nature of major slide blocks make it interesting to address the issue of tsunami generation. We have obtained seismic reflection data that partly reveal the internal structure of the slide body. Gravity core samples were retrieved that will allow the slide to be dated and linked to the history of sedimentation and slope stability along this particular segment of the Chilean convergent margin. At present we assume a Holocene age for the sliding event.

CASE HISTORY OF WILD GOOSE GAS FIELD, BUTTE COUNTY, CALIFORNIA

Geophysics ◽  
1954 ◽  
Vol 19 (3) ◽  
pp. 509-516 ◽  
Author(s):  
Wallace L. Matjasic
Keyword(s):  
Cross Sections ◽  
Seismic Reflection ◽  
Upper Cretaceous ◽  
Gas Field ◽  
Contour Map ◽  
Seismic Reflection Data ◽  
Reflection Data ◽  
History Of ◽  
Further Development ◽  
Wild Goose

The discovery well of the Wild Goose gas field was drilled and completed in 1951 on a structure located by a reflection seismograph survey conducted in 1950. An additional seismograph survey was made subsequent to discovery to define the structure better for further development. The illustrations include two seismic cross sections, a contour map based on the original seismic reflection data, an aeromagnetic map, a structure contour map, and an electric log of the discovery well. The producing sands are in an interval between the Forbes shale of Upper Cretaceous age and the overlying Capay shale of Eocene age.

A case history of experimental time-lapse 3C 2D seismic reflection data for reservoir monitoring at Cold Lake, Alberta, Canada

2014 ◽  
Vol 2 (2) ◽  
pp. SE47-SE54
Author(s):  
J. Helen Isaac ◽  
Don C. Lawton
Keyword(s):  
Seismic Reflection ◽  
Time Lapse ◽  
Steam Injection ◽  
Converted Wave ◽  
Injection Wells ◽  
Seismic Reflection Data ◽  
Experimental Time ◽  
Reflection Data ◽  
History Of ◽  
Cold Lake

We processed, interpreted, and analyzed experimental time-lapse converted-wave 2D-seismic reflection data that were acquired across a bitumen field undergoing cyclical steam injection and production at Cold Lake, Alberta, Canada. The purpose was to assess whether multicomponent-seismic data could be used to detect lateral and/or temporal changes caused by steam injection into the reservoir. We interpreted horizons on PP and PS sections that bracket the reservoir, and calculated [Formula: see text] over this interval. Away from the steam injection wells, [Formula: see text] values average [Formula: see text] during steaming and production and are close to the theoretically predicted value of 2.21 for a cold reservoir. Near the wells, [Formula: see text] is lower during steam injection than during production, averaging [Formula: see text], and the lowest values are observed close to the injection wells. We attributed the changes in [Formula: see text] to changes in the reservoir caused by the injection of steam.

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