Gravimetric determination of the continental-oceanic boundary of the Argentine continental margin (from 36°S to 50°S)
This paper presents the gravimetric analysis together with seismic data as an integral application in order to identify the continental-oceanic crust boundary (COB) of the Argentine continental margin from 36°S to 50°S in a continuous way. The gravimetric and seismic data are made up of large grids...
Guardado en:
| Autores principales: | , , , , , |
|---|---|
| Formato: | JOUR |
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_0956540X_v204_n1_p366_Arecco |
| Aporte de: |
| id |
todo:paper_0956540X_v204_n1_p366_Arecco |
|---|---|
| record_format |
dspace |
| spelling |
todo:paper_0956540X_v204_n1_p366_Arecco2023-10-03T15:52:07Z Gravimetric determination of the continental-oceanic boundary of the Argentine continental margin (from 36°S to 50°S) Arecco, M.A. Ruiz, F. Pizarro, G. Giménez, M. Martínez, P. Ramos, V.A. Composition of the continental crust Composition of the oceanic crust Continental margins Divergent Gravity anomalies and earth structure South America Gravimetric analysis Refraction Seismic response Seismic waves Seismology Structural geology Composition of the continental crusts Composition of the oceanic crusts Continental margin Divergent Gravity anomalies and Earth structures South America Three dimensional computer graphics continental crust continental margin gravimetry gravity anomaly oceanic crust seismic data Argentina This paper presents the gravimetric analysis together with seismic data as an integral application in order to identify the continental-oceanic crust boundary (COB) of the Argentine continental margin from 36°S to 50°S in a continuous way. The gravimetric and seismic data are made up of large grids of data obtained from satellite altimetry and marine research. The methodology consists of three distinct methods: (i) the application of enhancement techniques to gravimetric anomalies, (ii) the calculation of crustal thinning from 3-D gravity inversion modelling of the crust-mantle discontinuity and (iii) 2-D gravimetric modelling supported by multichannel reflection and refraction seismic profiles. In the first method, the analytic signal, Theta map, and tilt angle and its horizontal derivative were applied. In the second method, crustal thickness was obtained as the difference in the depths of the crystalline basement and the crust-mantle discontinuity; the latter was obtained via gravimetric inversion. Finally, 2-D modellingwas performed from free-air anomalies in two representative sections by considering as restriction surfaces those coming from the interpretation of seismic data. The results of the joint application of enhancement techniques and 2-D and 3-D modelling have enabled continuous interpretation of the COB. In this study, the COB was determined continuously from the integration of 2-D profiles of the enhancement techniques, taking account of crustal thickness and performing 2-D gravimetric modelling. The modelling technique was complemented by regional studies integrated with multichannel seismic reflection and seismic refraction lines, resulting in consistent enhancement techniques. © The Authors 2015. Fil:Ramos, V.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0956540X_v204_n1_p366_Arecco |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Composition of the continental crust Composition of the oceanic crust Continental margins Divergent Gravity anomalies and earth structure South America Gravimetric analysis Refraction Seismic response Seismic waves Seismology Structural geology Composition of the continental crusts Composition of the oceanic crusts Continental margin Divergent Gravity anomalies and Earth structures South America Three dimensional computer graphics continental crust continental margin gravimetry gravity anomaly oceanic crust seismic data Argentina |
| spellingShingle |
Composition of the continental crust Composition of the oceanic crust Continental margins Divergent Gravity anomalies and earth structure South America Gravimetric analysis Refraction Seismic response Seismic waves Seismology Structural geology Composition of the continental crusts Composition of the oceanic crusts Continental margin Divergent Gravity anomalies and Earth structures South America Three dimensional computer graphics continental crust continental margin gravimetry gravity anomaly oceanic crust seismic data Argentina Arecco, M.A. Ruiz, F. Pizarro, G. Giménez, M. Martínez, P. Ramos, V.A. Gravimetric determination of the continental-oceanic boundary of the Argentine continental margin (from 36°S to 50°S) |
| topic_facet |
Composition of the continental crust Composition of the oceanic crust Continental margins Divergent Gravity anomalies and earth structure South America Gravimetric analysis Refraction Seismic response Seismic waves Seismology Structural geology Composition of the continental crusts Composition of the oceanic crusts Continental margin Divergent Gravity anomalies and Earth structures South America Three dimensional computer graphics continental crust continental margin gravimetry gravity anomaly oceanic crust seismic data Argentina |
| description |
This paper presents the gravimetric analysis together with seismic data as an integral application in order to identify the continental-oceanic crust boundary (COB) of the Argentine continental margin from 36°S to 50°S in a continuous way. The gravimetric and seismic data are made up of large grids of data obtained from satellite altimetry and marine research. The methodology consists of three distinct methods: (i) the application of enhancement techniques to gravimetric anomalies, (ii) the calculation of crustal thinning from 3-D gravity inversion modelling of the crust-mantle discontinuity and (iii) 2-D gravimetric modelling supported by multichannel reflection and refraction seismic profiles. In the first method, the analytic signal, Theta map, and tilt angle and its horizontal derivative were applied. In the second method, crustal thickness was obtained as the difference in the depths of the crystalline basement and the crust-mantle discontinuity; the latter was obtained via gravimetric inversion. Finally, 2-D modellingwas performed from free-air anomalies in two representative sections by considering as restriction surfaces those coming from the interpretation of seismic data. The results of the joint application of enhancement techniques and 2-D and 3-D modelling have enabled continuous interpretation of the COB. In this study, the COB was determined continuously from the integration of 2-D profiles of the enhancement techniques, taking account of crustal thickness and performing 2-D gravimetric modelling. The modelling technique was complemented by regional studies integrated with multichannel seismic reflection and seismic refraction lines, resulting in consistent enhancement techniques. © The Authors 2015. |
| format |
JOUR |
| author |
Arecco, M.A. Ruiz, F. Pizarro, G. Giménez, M. Martínez, P. Ramos, V.A. |
| author_facet |
Arecco, M.A. Ruiz, F. Pizarro, G. Giménez, M. Martínez, P. Ramos, V.A. |
| author_sort |
Arecco, M.A. |
| title |
Gravimetric determination of the continental-oceanic boundary of the Argentine continental margin (from 36°S to 50°S) |
| title_short |
Gravimetric determination of the continental-oceanic boundary of the Argentine continental margin (from 36°S to 50°S) |
| title_full |
Gravimetric determination of the continental-oceanic boundary of the Argentine continental margin (from 36°S to 50°S) |
| title_fullStr |
Gravimetric determination of the continental-oceanic boundary of the Argentine continental margin (from 36°S to 50°S) |
| title_full_unstemmed |
Gravimetric determination of the continental-oceanic boundary of the Argentine continental margin (from 36°S to 50°S) |
| title_sort |
gravimetric determination of the continental-oceanic boundary of the argentine continental margin (from 36°s to 50°s) |
| url |
http://hdl.handle.net/20.500.12110/paper_0956540X_v204_n1_p366_Arecco |
| work_keys_str_mv |
AT areccoma gravimetricdeterminationofthecontinentaloceanicboundaryoftheargentinecontinentalmarginfrom36sto50s AT ruizf gravimetricdeterminationofthecontinentaloceanicboundaryoftheargentinecontinentalmarginfrom36sto50s AT pizarrog gravimetricdeterminationofthecontinentaloceanicboundaryoftheargentinecontinentalmarginfrom36sto50s AT gimenezm gravimetricdeterminationofthecontinentaloceanicboundaryoftheargentinecontinentalmarginfrom36sto50s AT martinezp gravimetricdeterminationofthecontinentaloceanicboundaryoftheargentinecontinentalmarginfrom36sto50s AT ramosva gravimetricdeterminationofthecontinentaloceanicboundaryoftheargentinecontinentalmarginfrom36sto50s |
| _version_ |
1807315816985657344 |