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First record of Callovian ammonites from West Kalimantan (Middle Jurassic, Kalimantan Barat, Borneo, Indonesia)
| Content Provider | Semantic Scholar |
|---|---|
| Author | Schairer, Gerhard Zeiss, Arnold |
| Copyright Year | 2012 |
| Abstract | The ammonite fauna studied comes from West Kalimantan (Kalimantan Barat, Borneo, Indonesia), 40 km northwest of Sanggau, on the road from Kembajan to Tangjung, 17 km south of Kembajan (map Sanggau, NA 49-14, East Indies, 1:250000, Indonesia-Malaysia; 110° 23'E, 0° 25'N; Fig. I). All the ammonite specimens were collected (at different times, and by several people, including inhabitants) from a 20 m section in a quarry excavated in gently dipping (5-10°) beds of the Brandung Formation. Little is known of this formation because it is confined to only two outcrops mappable at 1:250 000 scale in West Kalimantan. Its base is not exposed, but it underlies the Pedawan Formation, which contains a diverse marine fauna (foraminifers, radiolarians, echinoids, bivalves, and ammonites) and flora (pollen, algae, and fossil wood) indicating Early and Late Cretaceous age. A contact between these two formations has not been seen, so the precise relationship between them is not known. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://d28rz98at9flks.cloudfront.net/81321/Jou1992_v13_n3_p229.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
