Paleogene-Neogene astronomical timescale of a well-log from the western South Atlantic (Espírito Santo Basin)
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2024
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| _version_ | 1867171040869744640 |
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| author | Santos, Thiago Pereira dos |
| author_facet | Santos, Thiago Pereira dos |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Here we present natural gamma ray (NGR) measured continously through a well-log drilled at the western South Atlantic (Espirito Santo Basin) named ES-2. Biostratigraphic and sequence stratigraphic interpretation identify the well-log as a Paleogene to Neogene section bounded by global sequences Sel1 (Selandian) and Ser4/Tor1 (Serravalian/Tortonian). Within this interval a high-resolution cyclostratigraphic framework was conducted to build an astronomical time scale. The identification of the orbital spectral conented is made through null-hypothesis test, such as Average Spectral Misfit (ASM), Correlation Coefficient (COCO) and Time Optimization (TimeOpt). Integrated prediction error filter (INPEFA) is used to recognize main depositional sequences. When INPEFA is tuned to the high-resolution orbital age model a very coherent astronomical deposition is revealed forced by long (405-kyr) and short (~100-kyr) eccentricity and periods of obliquity (~41-kyr). Very long amplitude modulation (AM) of eccentricity and obliquity are identified. These set of orbital forcing likely appear as a result of sea-level fluctuation and determine the stacking pattern. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_964010 |
| institution | PANGAEA |
| language | en |
| publishDate | 2024 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Paleogene-Neogene astronomical timescale of a well-log from the western South Atlantic (Espírito Santo Basin) Santos, Thiago Pereira dos Age model; Astronomical time scale; calculated with evolutive Time Optimization (eTimeOpt); Calculated with Integrated Prediction Error Filter (INPEFA); CDRILL; Cenozoic; Core drilling; DEPTH, sediment/rock; Milankovitch cycles; Natural gamma ray; Natural gamma ray, long term trend; Natural gamma ray, mid term trend; Natural gamma ray, short term trend; Orbital forcing; Petrobras-ES2; South Atlantic; Well log Here we present natural gamma ray (NGR) measured continously through a well-log drilled at the western South Atlantic (Espirito Santo Basin) named ES-2. Biostratigraphic and sequence stratigraphic interpretation identify the well-log as a Paleogene to Neogene section bounded by global sequences Sel1 (Selandian) and Ser4/Tor1 (Serravalian/Tortonian). Within this interval a high-resolution cyclostratigraphic framework was conducted to build an astronomical time scale. The identification of the orbital spectral conented is made through null-hypothesis test, such as Average Spectral Misfit (ASM), Correlation Coefficient (COCO) and Time Optimization (TimeOpt). Integrated prediction error filter (INPEFA) is used to recognize main depositional sequences. When INPEFA is tuned to the high-resolution orbital age model a very coherent astronomical deposition is revealed forced by long (405-kyr) and short (~100-kyr) eccentricity and periods of obliquity (~41-kyr). Very long amplitude modulation (AM) of eccentricity and obliquity are identified. These set of orbital forcing likely appear as a result of sea-level fluctuation and determine the stacking pattern. |
| title | Paleogene-Neogene astronomical timescale of a well-log from the western South Atlantic (Espírito Santo Basin) |
| topic | Age model; Astronomical time scale; calculated with evolutive Time Optimization (eTimeOpt); Calculated with Integrated Prediction Error Filter (INPEFA); CDRILL; Cenozoic; Core drilling; DEPTH, sediment/rock; Milankovitch cycles; Natural gamma ray; Natural gamma ray, long term trend; Natural gamma ray, mid term trend; Natural gamma ray, short term trend; Orbital forcing; Petrobras-ES2; South Atlantic; Well log |
| url | https://doi.org/10.1594/PANGAEA.964010 |