LEADER 03142oam 2200457zu 450 001 9910877738803321 005 20210807004627.0 010 $a1-118-66682-8 035 $a(CKB)3450000000004229 035 $a(SSID)ssj0000815386 035 $a(PQKBManifestationID)11476751 035 $a(PQKBTitleCode)TC0000815386 035 $a(PQKBWorkID)10806530 035 $a(PQKB)11322048 035 $a(NjHacI)993450000000004229 035 $a(PPN)188970479 035 $a(EXLCZ)993450000000004229 100 $a20160829d1989 uy 101 0 $aeng 135 $aur||||||||||| 181 $ctxt 182 $cc 183 $acr 200 02$aA Transect Through the New England Appalachians 210 31$a[Place of publication not identified]$cAmerican Geophysical Union$d1989 215 $a1 online resource (64 pages) $cillustrations 225 1 $aField trip guidebook (International Geological Congress (28th : 1989 : Washington, D.C.)) ;$vT162 300 $aBibliographic Level Mode of Issuance: Monograph 311 $a0-87590-607-9 330 $aPublished by the American Geophysical Union as part of the Field Trip Guidebooks Series, Volume 162. This traverse across the Northern Appalachians from the environs of Burlington, Vt. to Portsmouth, N.H. (fig. 1) demonstrates a geology which reflects the following tectono-metamorphic and/or magmatic events: 1 Grenvillian (Precambrian Y) orogeny, best seen in the Adirondack Mountains of northeastern New York, but also apparent in the cores of the Green Mountain and Lincoln massifs of west-central Vermont and the Chester-Athens and Sadawga-Rayponda domes of southeastern Vermont; 2 Avalonian (Precambrian Z) orogeny, evidenced by the Massabesic Gneiss and related rocks of southeastern New Hampshire; 3 Taconian (Mid-Ordovician) tectonism and metamorphism (the Taconic Mountains of western Vermont and eastern New York lie immediately south of our line of traverse); 4 Acadian orogeny (Early to Middle Devonian) - clearly the major tectonic, magmatic, and metamorphic event in this region, and best illustrated by geologic relations in New Hampshire and Maine; and 5 Mesozoic rifting, accompanied by the emplacement of ring-dikes and stocks of the White Mountain (Jurassic and Cretaceous) plutonic-volcanic complexes, chiefly in New Hampshire (figs. 2 and 3). Not to be seen are some Mississippian (325 Ma.) plutons of eastern New Hampshire and western Maine, and a Permian (275 Ma.) intrusive of south-central New Hampshire. The latter age is intriguing, because it is identical to that of granite cutting the Carboniferous (Westphalian) Narragansett Basin of southeastern New England, which was deformed and metamorphosed during the Alleghenian orogeny. 410 0$aField trip guidebook (International Geological Congress (28th : 1989 : Washington, D.C.)) ;$vT162. 606 $aGeology $zNew Hampshire 615 0$aGeology 676 $a557.42 700 $aLyons$b John B.$014028 702 $aLyons 801 0$bPQKB 906 $aBOOK 912 $a9910877738803321 996 $aA Transect Through the New England Appalachians$93569897 997 $aUNINA