{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,25]],"date-time":"2026-10-25T01:23:48Z","timestamp":1792891428224,"version":"4.5.0"},"reference-count":20,"publisher":"Society of Exploration Geophysicists","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2007,1,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>We demonstrate the potential of gravity data to detect and to locate in-depth subtle normal faults in the basement relief of a sedimentary basin. This demonstration is accomplished by inverting the gravity data with the constraint that the estimated basement relief presents local abrupt faults and is smooth elsewhere. We inverted the gravity data from the onshore Almada Basin in northeastern Brazil, and we mapped several normal faults whose locations and plane geometries were already known from seismic imaging. The inversion method delineated well both the discontinuities with small or large slips and a sequence of step faults. Using synthetic data, we performed a systematic search of normal fault slips versus fault displacement depths to map the fault-detectable region in this space. This mapping helps to assess the ability of gravity inversion to detect normal faults. Mapping shows that normal faults with small (&amp;lt;0.5km), medium (about 1km), and large (about 2km) vertical slips can be detected if the maximum midpoint depths of the fault planes are smaller than 1.8, 3.8, and 6.8km, respectively.<\/jats:p>","DOI":"10.1190\/1.2713226","type":"journal-article","created":{"date-parts":[[2007,5,9]],"date-time":"2007-05-09T19:01:51Z","timestamp":1178737311000},"page":"B59-B68","source":"Crossref","is-referenced-by-count":41,"title":["Gravity data as a tool for detecting faults: In-depth enhancement of subtle Almada's basement faults, Brazil"],"prefix":"10.1190","volume":"72","author":[{"given":"Valeria C. F.","family":"Barbosa","sequence":"first","affiliation":[{"name":"1Observat\u00f3rio Nacional, Gal. Jos\u00e9 Cristino, S\u00e3o Crist\u00f3v\u00e3o, Rio de Janeiro, Brazil. E-mail: valcris@on.br."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paulo T. L.","family":"Menezes","sequence":"additional","affiliation":[{"name":"2DGAP\/FGEL\/UERJ, Rua S\u00e3o Francisco Xavier, Maracan\u00e3, Rio de Janeiro, Brazil, and PETROBRAS, E&P, GEOF\/MP, Rio de Janeiro, Brazil. E-mail: ptarso@uerj.br."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jo\u00e3o B. C.","family":"Silva","sequence":"additional","affiliation":[{"name":"3Universidade Federal do Par\u00e1, Departemento Geofisica, CG, Bel\u00e9m, Par\u00e1, Brazil. E-mail: joaobcs@oi.com.br."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"186","published-online":{"date-parts":[[2007,4,9]]},"reference":[{"key":"2025121112544193400_R1","doi-asserted-by":"crossref","first-page":"1745","DOI":"10.1190\/1.1444275","article-title":"Gravity inversion of basement relief using approximate equality constraints on depths","volume":"62","author":"Barbosa","year":"1997","journal-title":"Geophysics"},{"key":"2025121112544193400_R2","doi-asserted-by":"crossref","first-page":"1429","DOI":"10.1190\/1.1444647","article-title":"Gravity inversion of a discontinuous relief stabilized by weighted smoothness constraints on depth","volume":"64","author":"Barbosa","year":"1999","journal-title":"Geophysics"},{"key":"2025121112544193400_R3","article-title":"Survivability of syn-rift hydrocarbon sources: Insights from modes of extension mapped from Brazilian and West African margin basins","volume-title":"Presented at the Houston Geological Society and 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