{"text_format":"dbase-jsonl-2026-09-30","columns":[{"name":"SAMPLENO","type":"character","width":10},{"name":"CODE","type":"character","width":254},{"name":"SHEET","type":"character","width":254},{"name":"INFO","type":"character","width":254},{"name":"RAD_AGE","type":"character","width":254},{"name":"SHORT_REF","type":"character","width":254}],"n_rows":52,"rows_kept":52,"cut":false,"deleted_skipped":0,"read_ended":"whole","bounds":"16MiB/16384/4096/first_that_fit","version":"dbase_level_three","encoding_class":"enc_single_byte","reader":"statdb_count/9"}
["45","Dgmr","North","Rhyolite in felsic metavolcani member of the Gile Mountain Formation","407.0 +/- 3.3 Ma","Rankin and Tucker (2009)"]
["29","Ol","North","Lost Nation granite","444.1 +/- 2.1 Ma","Rankin and Tucker (1999)"]
["30","Ol","North","Lost Nation granite","442 +/- 4 Ma","Moench and Aleinikoff (2003)"]
["31","Ol","North","Lost Nation granite - U-Pb sphene age","443 +/- 3 Ma","Moench and Aleinikoff (2003)"]
["47","Dbbg","North","Barre Granite","368 +/- 4 Ma","Aleinikoff and others (2011)"]
["44","Dlr","North","Metarhyolite in the Littleton Formation","407.5 +/- 3.9 Ma","Rankin and Tucker (2000)"]
["35","Scm","North","Comerford Intrusive Complex dike at Peaked Mountain","418.5 +/- 2 Ma","Rankin and others (2007)"]
["50","Dfbg","North","French Pond Granite","365 +/- 5 Ma","Moench and Aleinikoff (2003)"]
["41","Dr","North","Metarhyolite dike in the Albee Formation","412 +/- 2 Ma","Moench and others (1995); Lyons and others (1997)"]
["36","Sbd","North","Diorite of the Braintree Intrusive Complex","419 +/- 0.39 Ma","Black and others (2004)"]
["38","Sbg","North","Granite of the Braintree Intrusive Complex","421 +/- 7 Ma","Aleinikoff and others (2011)"]
["42","Dfqm","North","Fairlee Quartz Monzonite","410 +/- 5 Ma","Moench and Aleinikoff (2003)"]
["1","Y1dg","South","Hornblende diorite gneiss at South Londonderry","1393 +/- 9 Ma","Aleinikoff and others (2011)"]
["23","Onb","South","Trondhjemite in the Barnard Gneiss at Proctorsville","496 +/- 8 Ma","Aleinikoff and others (2011)"]
["7","Y2cp","South","Cole Pond tonalite gneiss","1321 +/- 9 Ma","Ratcliffe and others (1991); Aleinikoff and others (2011)"]
["6","Y1rta","South","Aplite facies of Rawsonville trondhjemitic gneiss, previously assigned to Bondville trondhjemitic gneiss","1348 +/- 3 Ma","Ratcliffe and others (1991)"]
["46","Dg","South","Granite in the Chester dome","392 +/- 6 Ma","Aleinikoff and others (2011)"]
["2","Y1bm","South","Baileys Mills tonalitic gneiss in the Chester dome","1383 +/- 13 Ma","Aleinikoff and others (2011)"]
["24","Ont","South","Tonalite gneiss in the North River Igneous Suite near Bartonsville","486 +/- 3 Ma","Aleinikoff and others (2011)"]
["17","Y3Ccbbh","South","Bull Hill Gneiss in the Chester dome","945 +/- 7 Ma","Karabinos and Aleinikoff (1990)"]
["32","DSwf","South","Felsic rock in the Waits River Formation","423 +/- 4 Ma","Aleinikoff and Karabinos (1990); Hueber and others (1990)"]
["48","Dbmg","South","Black Mountain pluton","364 +/- 4 Ma","Aleinikoff and others (2011)"]
["18","Y3Ccbbh","South","Bull Hill Gneiss on the west side of the Athens dome","955 +/- 5 Ma","Karabinos and Aleinikoff (1990)"]
["4","Y1fga","South","Felchville Gneiss (aplitic facies) at Cavendish Gorge","1372 +/- 11 Ma","Aleinikoff and others (2011)"]
["25","Ochv","South","Felsic volcanic layer interlayered with mafic volcanics in the Cram Hill Formation at Springfield","483 +/- 3 Ma","Aleinikoff and others (2011)"]
["19","Y3Ccbsr","South","Somerset Reservior Granite","965 +/- 4 Ma","Karabinos and Aleinikoff (1990)"]
["3","Y1rt","South","Rawsonville trondhjemite gneiss at Bromley Mountain","1367 +/- 16 Ma","Ratcliffe and others (1991); Aleinikoff and others (2011)"]
["12","Y2gg","South","Granitic gneiss crosscuts older and deformed intrusives (1.3-1.4 Ga suite) and paragneiss","1221 +/- 4 Ma","Aleinikoff and others (2011)"]
["11","Y2ch","South","College Hill Granite at Stratton Mountain - crosscuts older and deformed intrusives and paragneiss","1244 +/- 8 Ma","Aleinikoff and others (2011)"]
["8","Y2mig","South","Migmatitic gneiss at Stratton Mountain","1326 +/- 4 Ma","Aleinikoff and others (2011)"]
["9","Y2lgg","South","Fine-grained granodiorite at Ludlow Mountain","1309 +/- 6 Ma","Aleinikoff and others (2011)"]
["10","Y2lq","South","Okemo Quartzite - detrital zircons","about 1261 to 1359 Ma","Aleinikoff and others (2011)"]
["49","Dg","South","Granite dike south of Plymouth","365 +/- 5 Ma","Aleinikoff and others (2011)"]
["15","Y3Ama","South","Megacrystic granite gneiss on the eastern side of the Green Mountain massif","1119 +/- 3.3 Ma","Karabinos and Aleinikoff (1990)"]
["14","Y3Ama","South","Megacrystic granite gneiss east of Chittenden Reservoir","1121 +/- 1.4 Ma","Karabinos and Aleinikoff (1990)"]
["28","Ohi","North","Highlandcroft pluton","450 +/- 5 Ma","Lyons and others (1986)"]
["22","Onnt","South","Newfane tonalite intruding the Cram Hill Formation near South Newfane","502 +/- 4 Ma","Aleinikoff and others (2011)"]
["37","Sbg","South","Unmapped felsic dike of Sbg in Onbm at Bridgewater","418 +/- 1 Ma","Aleinikoff and Karabinos (1990)"]
["5","Y1fg","South","Felchville Gneiss (trondhjemite facies) at Felchville","1370 +/- 11 Ma","Aleinikoff and others (2011)"]
["16","Y3Bp","South","Migmatite gneiss in the Pine Hill slice","1037 +/- 6 Ma","Aleinikoff and others (2011)"]
["20","Y3Ccbs","South","Stamford Granite near the Massachusetts border","962 +/- 1 Ma","Karabinos and Aleinikoff (1988; 1990)"]
["21","CZphf","South","Rhyolitic metafelsite in the Pinney Hollow Formation","571 +/- 5 Ma","Walsh and Aleinikoff (1999)"]
["26","Onb","South","Trondhjemite in the Barnard Gneiss south of Bethel","471.4 +/- 3.7 Ma","Karabinos and others (1998)"]
["27","Oj","North","Joslin Turn pluton","469 +/- 1.5 Ma","Moench and Aleinikoff (2003)"]
["40","Dr","North","Metarhyolite dike in the Albee Formation","414 +/- 4 Ma","Moench and others (1995); Lyons and others (1997)"]
["33","Scm","North","Comerford Intrusive Complex at Comerford quarry","419.8 +/- 2.6 Ma","Rankin and others (2007)"]
["34","Scm","North","Comerford Intrusive Complex at Leighton Hill","419.3 +/- 1.3 Ma","Rankin and others (2007)"]
["39","Snd","North","Trondhjemite of the Newport Intrusive Complex","425 +/- 3 Ma","Aleinikoff and others (2011)"]
["43","Dbgn","South","Bethlehem Gneiss in the pluton at Bellows Falls","407 +/- 5 Ma","Kohn and others (1992)"]
["51","Dgr","South","Volcanic zircons in quartzite in the Gile Mountain Formation at Royalton","409 +/- 5 Ma","McWilliams and others (2010)"]
["6B","Y2bv","South","Bondville metadacite at Winhall River bridge","about 1342 Ma","Ratcliffe and others (1991); Aleinikoff and others (2011)"]
["13","Y3Amb","South","Megacrystic granite gneiss at Brandon Gap","1149 +/- 8 Ma","Aleinikoff and others (2011)"]