کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9461805 | 1313557 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ãvolution géomorphologique de l'avant-pays du Sud-Ouest de la Nouvelle-Calédonie durant les derniers cycles glaciaires
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم زمین و سیاره ای (عمومی)
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چکیده انگلیسی
We present the morphological analysis of a combined digital elevation model (DEM) obtained by merging data from terrestrial and coastal regions of southern New-Caledonia. Our aim is to describe the Quaternary morphotectonic evolution of the southwestern lagoon of New Caledonia, a region with a shallow average bathymetry (20 m), recently submerged in response to both tectonic and eustatic fluctuations. The marine DEM was obtained by interpolating 131â000 depth soundings from MOP-SHOM ('Mission océanographique du Pacifique'-'Service hydrographique et océanographique de la Marine', France). We confirm that morphologies such as meandering channels and deeply incised canyons are the result of a sub-aerial fluviatile evolution during periods of low sea levels. The marine sedimentation in this region is very recent, probably corresponding to no more than two glacial-interglacial cycles. Geometrical relationships between submerged paleo-rivers and streams, including captures and incisions, strongly suggest that Quaternary active tectonics affected river development. We identify two hydrographic palaeo-networks suggesting outflow changes, from parallel to the present-day island axis to perpendicular. To cite this article: V. Chevillotte et al., C. R. Geoscience 337 (2005).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Comptes Rendus Geoscience - Volume 337, Issue 7, May 2005, Pages 695-701
Journal: Comptes Rendus Geoscience - Volume 337, Issue 7, May 2005, Pages 695-701
نویسندگان
Violaine Chevillotte, Pascal Douillet, Guy Cabioch, Yves Lafoy, Yves Lagabrielle, Pierre Maurizot,