Deep seismic reflection reprocessing in northwestern Argentina (27° SL)

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Deep Seismic Study, in eastern and western foothills of Sierra de Aconquija, northwestern Sierras Pampeanas, Argentina, shows the deep structure of the range and the deep geometry of the Andean foreland basin. "Self-truncating" extended correlation algorithm was applied to compute cross-co...

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Autores principales: Comínguez, A.H., Cristallini, E.O., Ramos, V.A., Mercerat, E.D.
Formato: SER
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_10523812_v19_n1_p521_Cominguez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_10523812_v19_n1_p521_Cominguez
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spelling todo:paper_10523812_v19_n1_p521_Cominguez2023-10-03T16:00:31Z Deep seismic reflection reprocessing in northwestern Argentina (27° SL) Comínguez, A.H. Cristallini, E.O. Ramos, V.A. Mercerat, E.D. Deep Seismic Study, in eastern and western foothills of Sierra de Aconquija, northwestern Sierras Pampeanas, Argentina, shows the deep structure of the range and the deep geometry of the Andean foreland basin. "Self-truncating" extended correlation algorithm was applied to compute cross-correlation between the sweep and the records of Vibroseis lines. Special procedures, such as finite difference migration, FX deconvolution, FMED processing and complex demodulation, were applied in order to improve the interpretation. On the eastern side of Sierra de Aconquija, the structure is characterized by reverse faulting with eastward vergence, with the Guasayán and El Rosario faults exhibiting the most deformation. To the south, the Guasayán fault produces the uplift of the Guasayán basement range over tertiary deposits, and can be identified in the seismic reflection record down to 40 km depth. On the western side of Sierra de Aconquija, the deep structure of Campo del Arenal is characterized by westward vergent structures controlled by the anisotropy of the Sierra de Aconquija basement. Further to the west, the deformation style changes to eastward vergence. As a whole, both fault systems depict a double wedge active thrusting. Conspicuous sub-horizontal acoustic-reflectors at about 18, 30, 40 and 50 km depth, are interpreted as present or past brittleductile transitions. © 2000 Society of Exploration Geophysicists. Fil:Cristallini, E.O. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ramos, V.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. SER info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_10523812_v19_n1_p521_Cominguez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description Deep Seismic Study, in eastern and western foothills of Sierra de Aconquija, northwestern Sierras Pampeanas, Argentina, shows the deep structure of the range and the deep geometry of the Andean foreland basin. "Self-truncating" extended correlation algorithm was applied to compute cross-correlation between the sweep and the records of Vibroseis lines. Special procedures, such as finite difference migration, FX deconvolution, FMED processing and complex demodulation, were applied in order to improve the interpretation. On the eastern side of Sierra de Aconquija, the structure is characterized by reverse faulting with eastward vergence, with the Guasayán and El Rosario faults exhibiting the most deformation. To the south, the Guasayán fault produces the uplift of the Guasayán basement range over tertiary deposits, and can be identified in the seismic reflection record down to 40 km depth. On the western side of Sierra de Aconquija, the deep structure of Campo del Arenal is characterized by westward vergent structures controlled by the anisotropy of the Sierra de Aconquija basement. Further to the west, the deformation style changes to eastward vergence. As a whole, both fault systems depict a double wedge active thrusting. Conspicuous sub-horizontal acoustic-reflectors at about 18, 30, 40 and 50 km depth, are interpreted as present or past brittleductile transitions. © 2000 Society of Exploration Geophysicists.
format SER
author Comínguez, A.H.
Cristallini, E.O.
Ramos, V.A.
Mercerat, E.D.
spellingShingle Comínguez, A.H.
Cristallini, E.O.
Ramos, V.A.
Mercerat, E.D.
Deep seismic reflection reprocessing in northwestern Argentina (27° SL)
author_facet Comínguez, A.H.
Cristallini, E.O.
Ramos, V.A.
Mercerat, E.D.
author_sort Comínguez, A.H.
title Deep seismic reflection reprocessing in northwestern Argentina (27° SL)
title_short Deep seismic reflection reprocessing in northwestern Argentina (27° SL)
title_full Deep seismic reflection reprocessing in northwestern Argentina (27° SL)
title_fullStr Deep seismic reflection reprocessing in northwestern Argentina (27° SL)
title_full_unstemmed Deep seismic reflection reprocessing in northwestern Argentina (27° SL)
title_sort deep seismic reflection reprocessing in northwestern argentina (27° sl)
url http://hdl.handle.net/20.500.12110/paper_10523812_v19_n1_p521_Cominguez
work_keys_str_mv AT cominguezah deepseismicreflectionreprocessinginnorthwesternargentina27sl
AT cristallinieo deepseismicreflectionreprocessinginnorthwesternargentina27sl
AT ramosva deepseismicreflectionreprocessinginnorthwesternargentina27sl
AT mercerated deepseismicreflectionreprocessinginnorthwesternargentina27sl
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