Santos, Thiago Pereira dos (2024): Paleogene-Neogene astronomical timescale of a well-log from the western South Atlantic (Espírito Santo Basin) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.964010
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
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.
Keyword(s):
Related to:
Santos, Thiago Pereira dos; Lisboa, Luana P; Carreira, Victor; Bione, Fellippe Roberto Alves; Venancio, Igor Martins; Bernardes, M C; Belem, Andre L; Díaz, Rut A; Moreira, Manuel; Lopes, Alexandre A O; Santos, Tulio L; Souza, Igor V; Spigolon, André L D; Albuquerque, Ana Luiza Spadano (2023): Orbitally‐driven Palaeogene to Neogene deposition in the western South Atlantic (Espírito Santo Basin) and its correlation with global sea level. Sedimentology, 70(6), 2015-2030, https://doi.org/10.1111/sed.13104
Coverage:
Latitude: -19.000000 * Longitude: -39.000000
Date/Time Start: 1997-01-07T00:00:00 * Date/Time End: 1997-01-07T00:00:00
Minimum DEPTH, sediment/rock: 578.0 m * Maximum DEPTH, sediment/rock: 3722.0 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Santos, Thiago Pereira dos | Geocode | |
| 2 | Natural gamma ray | NGR | API units | Santos, Thiago Pereira dos | ||
| 3 | Age model | Age model | ka | Santos, Thiago Pereira dos | Astronomical time scale; calculated with evolutive Time Optimization (eTimeOpt) | |
| 4 | Natural gamma ray, long term trend | NGR long term trend | Santos, Thiago Pereira dos | Calculated with Integrated Prediction Error Filter (INPEFA) | ||
| 5 | Natural gamma ray, mid term trend | NGR mid term trend | Santos, Thiago Pereira dos | Calculated with Integrated Prediction Error Filter (INPEFA) | ||
| 6 | Natural gamma ray, short term trend | NGR short term trend | Santos, Thiago Pereira dos | Calculated with Integrated Prediction Error Filter (INPEFA) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
78595 data points
Download Data
View dataset as HTML (shows only first 2000 rows)