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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
271 QMIS005A  PALAEOARCHAEAN  ERA  Palaeoarchaean Era  3200  3600  DEFINITE  0  DEFINITE  0    C  TMCM  22-SEP-09     
272 QMIS005B  MARINE ISOTOPE STAGE 3  MIS  Marine Isotope Stage 3  .024  .059  QUAT  0  QUAT  0    C  TMCM  22-SEP-09     
273 QMIS005C  MARINE ISOTOPE STAGE 38  MIS  Marine Isotope Stage 38  1.17  1.2  INTERP  0  INTERP  0    C  TMCM  22-SEP-09     
274 QMIS005D  MARINE ISOTOPE STAGE 44  MIS  Marine Isotope Stage 44  1.31  1.34  INTERP  0  INTERP  0    C  TMCM  22-SEP-09     
275 QMIS005E  MARINE ISOTOPE STAGE 49  MIS  Marine Isotope Stage 49  1.43  1.46  INTERP  0  INTERP  0    C  TMCM  22-SEP-09     
276 QMIS006  MARINE ISOTOPE STAGE 55  MIS  Marine Isotope Stage 55  1.57  1.6  INTERP  0  INTERP  0    C  TMCM  22-SEP-09     
277 QMIS007  PLEISTOCENE [OBSOLETE CONCEPT FOR THIS EPOCH]  EPOCH  Pleistocene Epoch [Obsolete concept for epoch]  .0117  1.806  DEFINITE  0  DEFINITE  0  Used when Plio-Pleistocene boundary was placed at 1.806 MA, no longer the accepted BGS definition; use QP Pleistocene.  O  TMCM  16-FEB-10  TMCM  09-NOV-11 
278 QMIS008  MARINE ISOTOPE STAGE 35  MIS  Marine Isotope Stage 35  1.1  1.13  INTERP  0  INTERP  0    C  TMCM  22-SEP-09     
279 QMIS009  MARINE ISOTOPE STAGE 100  MIS  Marine Isotope Stage 100  2.37  2.4  INTERP  0  INTERP  0    C  TMCM  22-SEP-09     
280 QMIS010  UFIMIAN-KAZANIAN [OBSOLETE AGE TERM: CLOSEST CURRENT TERM IS GUADALUPIAN]  AGE  Ufimian-Kazanian Age [Obsolete age term]  263  270.6  INTERP  0  DEFINITE  .7  Not on 2009 BGS Geological Time Chart; no direct replacement term.  O  TMCM  22-SEP-09  TMCM  09-NOV-11 
281 QMIS011  NOT AVAILABLE  -  Not Available  0  0  -  0  -  0    C  TMCM  22-SEP-09     
282 QMIS012  NOT APPLICABLE   -  Not Applicable  0  0  -  0  -  0    C  TMCM  22-SEP-09     
283 QMIS013  NOT ENTERED  -  Not Entered  0  0  -  0  -  0    C  TMCM  22-SEP-09     
284 QMIS014  GEOLOGICAL TIME  -  Geological Time  0  4600  DEFINITE  0  DEFINITE  0    C  TMCM  22-SEP-09     
285 QMIS015  PHANEROZOIC  EON  Phanerozoic Eon  0  542  DEFINITE  0  DEFINITE  1    C  TMCM  22-SEP-09     
286 QMIS016  CENOZOIC  ERA  Cenozoic Era  0  65.5  DEFINITE  0  DEFINITE  .3    C  TMCM  22-SEP-09     
287 QMIS017  QUATERNARY  PERIOD  Quaternary Period  0  2.588  DEFINITE  0  DEFINITE  0    C  TMCM  22-SEP-09     
288 QMIS018  HOLOCENE  EPOCH  Holocene Epoch  0  .0117  DEFINITE  0  DEFINITE  0    C  TMCM  22-SEP-09     
289 QMIS019  PRESENT DAY  -  Present Day  0  0  DEFINITE  0  DEFINITE  0    C  TMCM  22-SEP-09     
290 QMIS020  FLANDRIAN  AGE  Flandrian Age  0  .0117  DEFINITE  0  DEFINITE  0    C  TMCM  22-SEP-09     

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