Abundance of non-skeletal grains from IODP Site 356-U1461
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| Autores principales: | , , , , , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
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PANGAEA
2024
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| _version_ | 1867169143214571520 |
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| author | Hallenberger, Maximilian Reuning, Lars Back, Stefan Gallagher, Stephen John Iwatani, Hokuto Lindhorst, Katja |
| author_facet | Hallenberger, Maximilian Reuning, Lars Back, Stefan Gallagher, Stephen John Iwatani, Hokuto Lindhorst, Katja |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The North West Shelf of Australia is an extensive tropical carbonate ramp and forms an important template for the interpretation of similar systems in the sedimentary record. Yet, little is known about the development of the distally steepened ramp from the middle to late Quaternary, a period of high frequency glacioeustatic changes in sea level and climate. This research describes core and seismic-reflection data from a mid- to outer ramp transect at the Northwest Shelf. Throughout the studied core section, several sections rich in ooids and peloids occur. Sediment samples were investigated for their abundance of these non-skeletal grains to better understand the timing and condition of their formation. During arid glacial lowstands, sedimentation is characterized by inorganically precipitated carbonates, including ooids and peloids. Ooids developed under shallow-marine conditions on small-scale flat-topped platforms. Seismic and sedimentological evidence indicates that these platforms grew locally on top of the present-day mid ramp and were typically only active during a single glacial period. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_927008 |
| institution | PANGAEA |
| language | en |
| publishDate | 2024 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Abundance of non-skeletal grains from IODP Site 356-U1461 Hallenberger, Maximilian Reuning, Lars Back, Stefan Gallagher, Stephen John Iwatani, Hokuto Lindhorst, Katja 356-U1461B; 356-U1461C; APC; Aragonite-needle mud; Australian Shelf; Autoclave piston corer; Cortex thickness; Date/Time of event; DEPTH, sediment/rock; Distally steepened ramp; Event label; Exp356; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Joides Resolution; Latitude of event; Longitude of event; Lowstand shedding; Non-skeletal grains; NWS; Ooids; RCD; Rotary core drilling; see comment The North West Shelf of Australia is an extensive tropical carbonate ramp and forms an important template for the interpretation of similar systems in the sedimentary record. Yet, little is known about the development of the distally steepened ramp from the middle to late Quaternary, a period of high frequency glacioeustatic changes in sea level and climate. This research describes core and seismic-reflection data from a mid- to outer ramp transect at the Northwest Shelf. Throughout the studied core section, several sections rich in ooids and peloids occur. Sediment samples were investigated for their abundance of these non-skeletal grains to better understand the timing and condition of their formation. During arid glacial lowstands, sedimentation is characterized by inorganically precipitated carbonates, including ooids and peloids. Ooids developed under shallow-marine conditions on small-scale flat-topped platforms. Seismic and sedimentological evidence indicates that these platforms grew locally on top of the present-day mid ramp and were typically only active during a single glacial period. |
| title | Abundance of non-skeletal grains from IODP Site 356-U1461 |
| topic | 356-U1461B; 356-U1461C; APC; Aragonite-needle mud; Australian Shelf; Autoclave piston corer; Cortex thickness; Date/Time of event; DEPTH, sediment/rock; Distally steepened ramp; Event label; Exp356; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Joides Resolution; Latitude of event; Longitude of event; Lowstand shedding; Non-skeletal grains; NWS; Ooids; RCD; Rotary core drilling; see comment |
| url | https://doi.org/10.1594/PANGAEA.927008 |