کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8868656 | 1622107 | 2017 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Multiple generations of buried cold-water coral mounds since the Early-Middle Pleistocene Transition in the Atlantic Moroccan Coral Province, southern Gulf of Cádiz
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Cold-water coral mounds are common seabed features in the North Atlantic Ocean, where they are mainly restricted to water depths between 200Â m and 1000Â m. Coral mounds consist of coral fragments and hemipelagic sediments, reflecting an often complex history of mound aggradation and erosion linked to coral vitality. In the southern Gulf of Cádiz along the Moroccan margin, a large field (extension: 1800Â km2) of 781 comparatively small buried and exposed mounds (average height: about 20Â m) has recently been discovered. The mounds in the so-called Atlantic Moroccan Coral Province (AMCP) initiated on at least ten different horizons, all of them most likely related to glacial periods since the Early-Middle Pleistocene Transition. A strong link between the intensification of bottom currents and the number of coral mounds rooting on each of the identified horizons is assumed. Also a shift of the average water depth at which coral mounds initiated towards deeper regions and an accompanied increase in mound height is observed between MIS 14 and MIS 12. Finally, reduced or low sediment input is regarded as one of the main factors causing the rather small size of coral mounds in the AMCP in comparison to other Atlantic mound provinces.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Palaeogeography, Palaeoclimatology, Palaeoecology - Volume 485, 1 November 2017, Pages 293-304
Journal: Palaeogeography, Palaeoclimatology, Palaeoecology - Volume 485, 1 November 2017, Pages 293-304
نویسندگان
Vandorpe T., Wienberg C., Hebbeln D., Van den Berghe M., Gaide S., Wintersteller P., Van Rooij D.,