File:Cycle émersif Oman.jpg
Jump to navigation
Jump to search
Size of this preview: 800 × 581 pixels. Other resolutions: 320 × 232 pixels | 640 × 465 pixels | 1,024 × 744 pixels | 1,280 × 930 pixels | 1,795 × 1,304 pixels.
Original file (1,795 × 1,304 pixels, file size: 1.61 MB, MIME type: image/jpeg)
Captions
Captions
Add a one-line explanation of what this file represents
Summary
[edit]
| Description |
Français : Séquence émersive de comblement dans le lagon liasique (-190 Ma) de la Péninsule du Musandam (sultanat d'Oman). Le cycle se termine en milieu inter à supratidal avec des tapis algaires dolomitisés (en jaune). Ces cycles (connus du Trias au Jurassique sur les deux rives de la Téthys) sont arrangés en séquences d'ordre supérieur, déca à hectométriques, soulignées par des discontinuités. Des tentatives de corrélations, basées sur ces discontinuités, ce sont soldées par un échec, lors de la réévaluation des âges biostratigraphiques. Ainsi le contrôle par la micropaléontologie des algues et des foraminifères reste indispensable pour étalonner les discontinuités majeures (BRGM, comm. pers., 1992). Voir aussi Septfontaine & De Matos (1998). Il est donc illusoire de parler de "stratigraphie de haute résolution", comme outil de corrélation, dans le cadre de la stratigraphie séquentielle, sans contrôle stricte par la paléontologie, comme dans le Crét. inf. de la plate-forme jurassienne (Strasser et coll, etc.). Unknown shallowing upward sequence in the liassic lagoon of the musandam peninsula (oman). inter to supratidal, algal, deposits on top (yellow). such cycles (auto and allocyclic) are well known around the mesozoic tethys, from morocco to arabia. these beds are arranged in deca to hectometric sequences, separated by important discontinuities. tentatives of correlations of major discontinuities were unsucessfull, after biostratigraphic control (brgm pers. comm., 1992); see also septfontaine & de matos (1998) for stratigraphical setting. |
| Date | |
| Source | Own work |
| Author | Septfontaine |
Info: DrTrigonBot (talk) has evaluated this file and left hidden information. View it! For a deeper understanding of how the bot works, please consult the documentation.
Licensing
[edit]
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 12:42, 24 March 2012 | | 1,795 × 1,304 (1.61 MB) | Septfontaine (talk | contribs) |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on en.wikipedia.org
- Usage on fr.wikipedia.org
- Usage on hy.wikipedia.org
