{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"U-Pb geochronology and geologic significance of the two oldest known mafic dyke swarms on earth: 3659. (Geological Association of Canada 2000 Annual ... Section).: An article from: Atlantic Geology","author_name":"J.L. Crowley, R.V. White, J.S. Myers, G.R. Dunning","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0008JD60E.html\">U-Pb geochronology and geologic significance of the two oldest known mafic dyke swarms on earth: 3659. (Geological Association of Canada 2000 Annual ... Section).: An article from: Atlantic Geology</a>","width":400,"height":300}