کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6443892 1640213 2014 281 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Impact structures in Africa: A review
ترجمه فارسی عنوان
ساختارهای تاثیر گذاری در آفریقا: بررسی
کلمات کلیدی
سازه های ضربه، آفریقا، رکورد ضربه دهی ضربه، دگرگونی شوک، شناسایی پروجکت، رکورد ضربه زمینی،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی
چکیده انگلیسی
Here, we review the current status of knowledge about impact cratering - and provide a detailed account of the African impact record, which has been expanded vastly since a first overview was published in 1994. No less than 19 confirmed impact structures, and one shatter cone occurrence without related impact crater are now known from Africa. In addition, a number of impact glass, tektite and spherule layer occurrences are known. The 49 sites with proposed, but not yet confirmed, possible impact structures contain at least a considerable number of structures that, from available information, hold the promise to be able to expand the African impact record drastically - provided the political conditions for safe ground-truthing will become available. The fact that 28 structures have also been shown to date NOT to be of impact origin further underpins the strong interest in impact in Africa. We hope that this review stimulates the education of students about impact cratering and the fundamental importance of this process for Earth - both for its biological and geological evolution. This work may provide a reference volume for those workers who would like to search for impact craters and their ejecta in Africa.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of African Earth Sciences - Volume 93, May 2014, Pages 57-175
نویسندگان
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