کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5781627 1636699 2017 59 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Crustal structure of the SW Iberian passive margin: The westernmost remnant of the Ligurian Tethys?
ترجمه فارسی عنوان
ساختار پوسته ای از حاشیه منفعل سوئیچ ایبرین: بقایای غربی تتیس لیگورین؟
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی
Integrated interpretation of MCS data combined with 2D gravity modeling reveals a complex pattern in the southward crustal thinning of SW Iberia and supports the possible presence of oceanic crust under the Gulf of Cadiz. The tapering of Iberian crust is characterized by steps with rapid changes in the thickness of the crust, and thinning to < 10 km under the outer portions of the margin. Based on gravimetric modeling results and the structures interpreted on reflection seismic profiles, 3 crustal domains reflecting progressive thinning have been defined for the SW Iberian margin. These domains trend roughly WSW-ENE, parallel to the main extensional fabric of the margin. Gravimetric modeling results are compatible with the presence of exhumed sub-continental mantle in the distal part of the margin. Integrated modeling also supports the fact that Cenozoic contraction is responsible for major uplift along the Guadalquivir Bank. Margin inversion and the pre-existing extensional crustal structure are responsible for the areal distribution and amplitude of the prominent positive gravity anomaly observed in the Gulf of Cadiz.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tectonophysics - Volume 705, 9 May 2017, Pages 42-62
نویسندگان
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