A squall by the seashore ca 2.3 billion years ago: Raindrop imprints in a Paleoproterozoic tidal flat deposit, Kungarra Formation, Western Australia
In this contribution, we describe the occurrence of well-preserved Paleoproterozoic raindrop impact imprints on two surfaces of rippled siltstone–mudstone from the uppermost part of the Paleoproterozoic Kungarra Formation, Turee Creek Group, Western Australia. The raindrop imprints appear on the top...
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| Format: | Journal Article |
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Taylor & Francis Co Ltd
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/25058 |
| _version_ | 1848751601683005440 |
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| author | Mazumder, Rajat |
| author_facet | Mazumder, Rajat |
| author_sort | Mazumder, Rajat |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In this contribution, we describe the occurrence of well-preserved Paleoproterozoic raindrop impact imprints on two surfaces of rippled siltstone–mudstone from the uppermost part of the Paleoproterozoic Kungarra Formation, Turee Creek Group, Western Australia. The raindrop imprints appear on the tops of two immediately overlying bedding surfaces in siltstone, near the top of a shallowing upward sequence that progresses from sandstone to mudstone. Imprints are circular to elliptical with an average diameter of 2–3 mm and a maximum length of 6.3 mm when elliptical. Flat ripple crest morphologies, varied ripple crest orientations, and marks of standing water in the ripple troughs indicate very shallow water conditions. When combined with sedimentological data from the underlying Kungarra Formation (shallow marine sandstones and siltstones), and mature quartz arenites of the overlying Koolbye Formation (mixed tidal, beach, fluvial and eolian), the interval examined is interpreted as a tidal flat deposited during a falling stage systems tract. |
| first_indexed | 2025-11-14T07:55:19Z |
| format | Journal Article |
| id | curtin-20.500.11937-25058 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:55:19Z |
| publishDate | 2015 |
| publisher | Taylor & Francis Co Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-250582018-03-29T09:08:50Z A squall by the seashore ca 2.3 billion years ago: Raindrop imprints in a Paleoproterozoic tidal flat deposit, Kungarra Formation, Western Australia Mazumder, Rajat In this contribution, we describe the occurrence of well-preserved Paleoproterozoic raindrop impact imprints on two surfaces of rippled siltstone–mudstone from the uppermost part of the Paleoproterozoic Kungarra Formation, Turee Creek Group, Western Australia. The raindrop imprints appear on the tops of two immediately overlying bedding surfaces in siltstone, near the top of a shallowing upward sequence that progresses from sandstone to mudstone. Imprints are circular to elliptical with an average diameter of 2–3 mm and a maximum length of 6.3 mm when elliptical. Flat ripple crest morphologies, varied ripple crest orientations, and marks of standing water in the ripple troughs indicate very shallow water conditions. When combined with sedimentological data from the underlying Kungarra Formation (shallow marine sandstones and siltstones), and mature quartz arenites of the overlying Koolbye Formation (mixed tidal, beach, fluvial and eolian), the interval examined is interpreted as a tidal flat deposited during a falling stage systems tract. 2015 Journal Article http://hdl.handle.net/20.500.11937/25058 10.1080/08120099.2015.1016105 Taylor & Francis Co Ltd restricted |
| spellingShingle | Mazumder, Rajat A squall by the seashore ca 2.3 billion years ago: Raindrop imprints in a Paleoproterozoic tidal flat deposit, Kungarra Formation, Western Australia |
| title | A squall by the seashore ca 2.3 billion years ago: Raindrop imprints in a Paleoproterozoic tidal flat deposit, Kungarra Formation, Western Australia |
| title_full | A squall by the seashore ca 2.3 billion years ago: Raindrop imprints in a Paleoproterozoic tidal flat deposit, Kungarra Formation, Western Australia |
| title_fullStr | A squall by the seashore ca 2.3 billion years ago: Raindrop imprints in a Paleoproterozoic tidal flat deposit, Kungarra Formation, Western Australia |
| title_full_unstemmed | A squall by the seashore ca 2.3 billion years ago: Raindrop imprints in a Paleoproterozoic tidal flat deposit, Kungarra Formation, Western Australia |
| title_short | A squall by the seashore ca 2.3 billion years ago: Raindrop imprints in a Paleoproterozoic tidal flat deposit, Kungarra Formation, Western Australia |
| title_sort | squall by the seashore ca 2.3 billion years ago: raindrop imprints in a paleoproterozoic tidal flat deposit, kungarra formation, western australia |
| url | http://hdl.handle.net/20.500.11937/25058 |