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DIC_GEOCHRON (410 rows)
Dictionary table holding codes, names and radiometric ages of geochronological intervals that can be used in BGS databases. It is this table that acts as the domain constraint on corporate data tables.


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Row CODE DESCRIPTION RANK_CODE TRANSLATION MIN_AGE MAX_AGE MIN_AGE_TYPE_CODE MIN_AGE_PLUS_OR_MINUS MAX_AGE_TYPE_CODE MAX_AGE_PLUS_OR_MINUS COMMENTS STATUS USER_ENTERED DATE_ENTERED USER_UPDATED DATE_UPDATED
241 PUC  ROADIAN  AGE  Roadian Age  268  270.6  DEFINITE  .7  DEFINITE  .7    C  TMCM  22-SEP-09     
242 PUD  SAKMARIAN  AGE  Sakmarian Age  284.4  294.6  DEFINITE  .7  DEFINITE  .8    C  TMCM  22-SEP-09     
243 PUG  BASHKIRIAN  AGE  Bashkirian Age  311.7  318.1  DEFINITE  1.1  DEFINITE  1.3    C  TMCM  22-SEP-09     
244 PUH  SERPUKHOVIAN  AGE  Serpukhovian Age  318.1  326.4  DEFINITE  1.3  DEFINITE  1.6    C  TMCM  22-SEP-09     
245 PUL  TOURNAISIAN  AGE  Tournaisian Age  345.3  359.2  DEFINITE  2.1  DEFINITE  2.5    C  TMCM  22-SEP-09     
246 PUR  WESTPHALIAN  AGE  Westphalian Age  307  313  INTERP  0  INTERP  0  British regional age.  C  TMCM  22-SEP-09     
247 PUW  WESTPHALIAN C  SUB-AGE  Westphalian C Sub-age  309  310  INTERP  0  INTERP  0  Not on 2009 BGS Geological Time Chart; British regional sub-age; use CC Bolsovian.  O  TMCM  22-SEP-09     
248 Q  WESTPHALIAN A  SUB-AGE  Westphalian A Sub-age  312  313  INTERP  0  INTERP  0  Not on 2009 BGS Geological Time Chart; British regional sub-age; use CA Langsettian.  O  TMCM  22-SEP-09     
249 Q1  KINDERSCOUTIAN  SUB-AGE  Kinderscoutian Sub-age  315  316  INTERP  0  INTERP  0  British regional sub-age.  C  TMCM  22-SEP-09     
250 Q2  PENDLEIAN  SUB-AGE  Pendleian Sub-age  322  326.4  INTERP  0  DEFINITE  1.6  British regional sub-age.  C  TMCM  22-SEP-09     
251 Q2C  ARUNDIAN  AGE  Arundian Age  339  343  INTERP  0  INTERP  0  British regional age.  C  TMCM  22-SEP-09     
252 Q2G  FAMENNIAN  AGE  Famennian Age  359.2  374.5  DEFINITE  2.5  DEFINITE  2.6    C  TMCM  22-SEP-09     
253 Q2I  KATIAN  AGE  Katian Age  445.6  455.8  DEFINITE  1.5  DEFINITE  1.6    C  TMCM  22-SEP-09     
254 Q2T  EARLY ORDOVICIAN  EPOCH  Early Ordovician Epoch  471.8  488.3  DEFINITE  1.6  DEFINITE  1.7    C  TMCM  22-SEP-09     
255 QA  RAWTHEYAN  AGE  Rawtheyan Age  445.6  447  DEFINITE  1.5  INTERP  0  Not on 2009 BGS Geological Time Chart but retained for use.  C  TMCM  22-SEP-09     
256 QB  ONNIAN  SUB-AGE  Onnian Sub-age  451  452  INTERP  0  INTERP  0  Not on 2009 BGS Geological Time Chart but retained for use.  C  TMCM  22-SEP-09     
257 QC  WOOLSTONIAN  SUB-AGE  Woolstonian Sub-age  454  455  INTERP  0  INTERP  0  Not on 2009 BGS Geological Time Chart but retained for use.  C  TMCM  22-SEP-09     
258 QD  AURELUCIAN  AGE  Aurelucian Age  458  460.9  INTERP  0  DEFINITE  1.6  Not on 2009 BGS Geological Time Chart but retained for use.  C  TMCM  22-SEP-09     
259 QDD  PIACENZIAN [OBSOLETE CONCEPT FOR THIS AGE]  AGE  Piacenzian Age [Obsolete concept for age]  1.806  3.6  DEFINITE  0  DEFINITE  0  Used when Plio-Pleistocene boundary was placed at 1.806 MA, no longer the accepted BGS definition; use NC Piacenzian.  O  TMCM  16-FEB-10  TMCM  09-NOV-11 
260 QDL  MARINE ISOTOPE STAGE 11  MIS  Marine Isotope Stage 11  .362  .423  QUAT  0  QUAT  0    C  TMCM  22-SEP-09     

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